Yamaha FL300B1 Manual

Yamaha Påhængsmotor FL300B1

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Read this manual carefully before operating this

outboard motor.

OWNER’S MANUAL

F225

LF225

F250

LF250

F300

LF300

F250D1

FL250D1

F300B1

FL300B1

LIT-18626-09-96

6CE-28199-34-E0

EMU25063

ZMU07696

Les gaz d’échappement du moteur de ce produit

contiennent des substances chimiques connues

dans l’État de Californie pour provoquer le cancer,

des anomalies congénitales et des troubles de la

reproduction.

Read this manual carefully before operating this outboard motor. Keep this

manual onboard in a waterproof bag when boating. This manual should stay

with the outboard motor if it is sold.

Important manual information

EMU44140

To the owner

Thank you for selecting a Yamaha outboard

motor. This Owner’s Manual contains infor-

mation needed for proper operation, mainte-

nance and care. A thorough understanding

of these simple instructions will help you ob-

tain maximum enjoyment from your new

Yamaha. If you have any question about the

operation or maintenance of your outboard

motor, please consult a Yamaha dealer.

In this Owner’s Manual particularly important

information is distinguished in the following

ways.

: This is the safety alert symbol. It is

used to alert you to potential personal injury

hazards. Obey all safety messages that fol-

low this symbol to avoid possible injury or

death.

WARNING

EWM00781

A WARNING indicates a hazardous situa-

tion which, if not avoided, could result in

death or serious injury.

NOTICE

ECM00701

A NOTICE indicates special precautions

that must be taken to avoid damage to the

outboard motor or other property.

TIP:

A TIP provides key information to make pro-

cedures easier or clearer.

Yamaha continually seeks advancements in

product design and quality. Therefore, while

this manual contains the most current prod-

uct information available at the time of print-

ing, there may be minor discrepancies

between your machine and this manual. If

there is any question concerning this manu-

al, please consult your Yamaha dealer.

To ensure long product life, Yamaha recom-

mends that you use the product and perform

the specified periodic inspections and main-

tenance by correctly following the instruc-

tions in the owner’s manual. Any damage

resulting from neglect of these instructions is

not covered by warranty.

Some countries have laws or regulations re-

stricting users from taking the product out of

the country where it was purchased, and it

may be impossible to register the product in

the destination country. Additionally, the war-

ranty may not apply in certain regions. When

planning to take the product to another coun-

try, consult the dealer where the product was

purchased for further information.

If you purchased this outboard motor used,

see your Yamaha dealer to have it registered

in your name in Yamaha records.

TIP:

The F225CA, LF225CA, F250CA, LF250CA,

F300CA, LF300CA, F250DET1,

FL250DET1, F300BET1, FL300BET1 and

the standard accessories are used as a base

for the explanations and illustrations in this

manual. Therefore some items may not ap-

ply to every model.

Important manual information

EMU44150

F225, LF225, F250, LF250, F300, LF300,

F250D1, FL250D1, F300B1, FL300B1

OWNER’S MANUAL

1st Edition, November 2012

Any reprinting or unauthorized use

without the written permission of

Yamaha Motor Co., Ltd.

is expressly prohibited.

Printed in Japan

Table of contents

Safety information............................. 1

Outboard motor safety ..................... 1

Propeller............................................ 1

Rotating parts.................................... 1

Hot parts ........................................... 1

Electric shock .................................... 1

Power trim and tilt ............................. 1

Engine shut-off cord (lanyard)........... 1

Gasoline ............................................ 2

Gasoline exposure and spills ............ 2

Carbon monoxide.............................. 2

Modifications ..................................... 2

Boating safety .................................. 2

Alcohol and drugs ............................. 2

Personal flotation devices (PFDs)..... 2

People in the water ........................... 2

Passengers ....................................... 2

Overloading....................................... 2

Avoid collisions ................................. 3

Weather ............................................ 3

Accident reporting ............................. 3

Boat education and training .............. 3

Passenger training ............................ 4

Boating safety publications ............... 4

Laws and regulations ........................ 4

Boating organizations....................... 4

Basic boating rules (Rules of the

road)............................................... 5

Steering and sailing rules and

sound signals.................................. 5

Rules when encountering vessels .... 5

Other special situations..................... 6

General information .......................... 9

Identification numbers record ........... 9

Outboard motor serial number .......... 9

Digital electronic control serial

number............................................ 9

Key number..................................... 10

EC Declaration of Conformity

(DoC)............................................ 10

CE Marking .................................... 10

Read manuals and labels............... 11

Warning labels ............................... 11

Specifications and

requirements ................................... 14

Specifications................................. 14

Installation requirements................ 16

Boat horsepower rating ................... 16

Mounting outboard motor ................ 16

Digital electronic control

requirements ................................ 16

Battery requirements...................... 17

Specifications of Battery.................. 17

Mounting battery ............................. 17

Multiple batteries ............................. 17

Propeller selection ......................... 17

Counter rotation models.................. 18

Start-in-gear protection .................. 18

Engine oil requirements ................. 18

Fuel requirements .......................... 19

Gasoline .......................................... 19

Gasoline Additives .......................... 20

Anti-fouling paint ............................ 21

Outboard motor disposal

requirements21

Emergency equipment ................... 21

Emission control information ......... 21

North American models................... 21

Star labels ....................................... 22

Components.................................... 24

Components diagram..................... 24

Digital Electronic Control box .......... 27

Digital electronic control-active

indicator ........................................ 28

Digital electronic control-alert

indicator ........................................ 28

Control lever.................................... 29

Free throttle switch.......................... 29

Throttle friction adjuster................... 30

Engine shut-off cord (lanyard) and

clip................................................. 30

Main switch ..................................... 31

Start/Stop switch panel ................... 31

All Start/Stop switch panel .............. 32

Power trim and tilt switch on

digital electronic control ................ 32

Power trim and tilt switch on

bottom cowling .............................. 32

Table of contents

Power trim and tilt switches

(twin type) ..................................... 33

Trim tab with anode ........................ 33

Tilt support lever for power trim

and tilt model ................................ 34

Cowling lock lever ........................... 34

Flushing device ............................... 34

Fuel filter ......................................... 35

Instruments and indicators ............ 36

Command Link Plus Display .......... 36

Engine warm-up indicator ............... 36

Engine synchronization indicator .... 36

Overheat alert ................................. 36

Low oil pressure-alert...................... 37

Water separator alert ...................... 37

Low battery voltage-alert................. 38

Engine trouble alert......................... 38

Command Link Multifunction

Meters .......................................... 39

Command Link Multifunction

Tachometer .................................. 39

Low oil pressure-alert...................... 40

Overheat alert ................................. 40

Water separator alert ...................... 41

Engine trouble alert......................... 41

Low battery voltage-alert................. 42

Command Link Multifunction

Speed & Fuel Meter ..................... 42

Command Link Multifunction

Speedometer43

Command Link Multifunction Fuel

Management Meter ......................44

Optional meters..............................44

Engine control system.................... 46

Alert system ................................... 46

Digital Electronic Control alert......... 46

Overheat alert ................................. 46

Low oil pressure alert ...................... 47

Water separator alert ...................... 48

Installation ....................................... 50

Installation ......................................50

Mounting the outboard motor .......... 50

Operation ......................................... 52

First-time operation ........................ 52

Filling engine oil .............................. 52

Breaking in engine .......................... 52

Getting to know your boat ............... 52

Checks before starting engine ....... 52

Fuel level......................................... 53

Removing top cowling .....................53

Fuel system ..................................... 53

Controls........................................... 54

Engine shut-off cord (lanyard)......... 54

Engine oil ........................................ 54

Outboard motor ............................... 55

Flushing device ............................... 55

Installing top cowling....................... 55

Checking power trim and tilt

system........................................... 57

Battery............................................. 57

Filling fuel ...................................... 58

Operating engine ........................... 58

Sending fuel .................................... 58

Starting engine ................................ 58

Checks after starting engine .......... 60

Cooling water .................................. 60

Warming up engine........................ 61

Electric start models........................ 61

Checks after engine warm up ........ 61

Shifting ............................................ 61

Stop switches.................................. 61

Shifting........................................... 61

Stopping boat................................. 62

Trolling ........................................... 62

Adjusting trolling speed ................... 62

Stopping engine............................. 63

Procedure for stopping engine ........ 63

Trimming outboard motor............... 64

Adjusting trim angle (Power trim

and tilt) .......................................... 64

Adjusting boat trim .......................... 65

Tilting up and down........................ 66

Procedure for tilting up (power trim

and tilt models).............................. 66

Procedure for tilting down (power

trim and tilt models)....................... 67

Shallow water ................................ 68

Cruising in shallow water ................ 68

Operating in other conditions......... 69

Table of contents

Maintenance..................................... 70

Transporting and storing

outboard motor............................. 70

Storing outboard motor ................... 70

Conditioning and stabilizing

gasoline ........................................ 70

Procedure ....................................... 71

Lubrication ...................................... 71

Cleaning and anticorrosion

measures ...................................... 71

Flushing cooling water passage...... 71

Checking painted surface of

outboard motor ............................. 72

Periodic maintenance..................... 72

Replacement parts.......................... 73

Maintenance interval guidelines...... 73

Maintenance chart 1 ....................... 74

Maintenance chart 2 ....................... 76

Greasing ......................................... 77

Inspecting spark plug ...................... 77

Inspecting engine idle speed .......... 79

Changing engine oil ........................ 79

Inspecting wiring and connectors.... 85

Inspecting propeller......................... 85

Removing propeller......................... 86

Installing propeller........................... 87

Changing gear oil............................ 88

Inspecting and replacing

anode(s)........................................ 89

Checking battery (for electric start

models) ......................................... 90

Connecting the battery.................... 91

Disconnecting the battery ............... 92

Trouble Recovery ............................ 93

Troubleshooting .............................93

Temporary action in emergency..... 96

Impact damage ............................... 96

Running single engine (twin

engines) ........................................ 96

Replacing fuse ................................ 96

Power trim and tilt unit will not

operate.......................................... 97

Water separator-alert indicator

blinks while cruising ...................... 98

Treatment of submerged motor...... 99

Consumer information ................. 100

YAMAHA FOUR-STROKE

OUTBOARD MOTOR

THREE-YEAR LIMITED

WARRANTY .............................. 100

IMPORTANT WARRANTY

INFORMATION IF YOU USE

YOUR YAMAHA OUTSIDE

THE U.S.A. OR CANADA.......... 102

Safety information

EMU33622

Outboard motor safety

Observe these precautions at all times.

EMU36501

Propeller

People can be injured or killed if they come

in contact with the propeller. The propeller

can keep moving even when the motor is in

neutral, and sharp edges of the propeller can

cut even when stationary.

Stop the engine when a person is in the

water near you.

Keep people out of reach of the propeller,

even when the engine is off.

EMU40271

Rotating parts

Hands, feet, hair, jewelry, clothing, personal

flotation device (PFD) straps, etc., can be-

come entangled with internal rotating parts of

the engine, resulting in serious injury or

death.

Keep the top cowling in place whenever pos-

sible. Do not remove or replace the top cowl-

ing with the engine running.

Only operate the engine with the top cowling

removed according to the specific instruc-

tions in the manual. Keep hands, feet, hair,

jewelry, clothing, PFD straps, etc., away

from any exposed moving parts.

EMU33640

Hot parts

During and after operation, engine parts are

hot enough to cause burns. Avoid touching

any parts under the top cowling until the en-

gine has cooled.

EMU33650

Electric shock

Do not touch any electrical parts while start-

ing or operating the engine. They can cause

shock or electrocution.

EMU33660

Power trim and tilt

Body parts can be crushed between the mo-

tor and the clamp bracket when the motor is

trimmed or tilted. Keep body parts out of this

area at all times. Be sure no one is in this

area before operating the power trim and tilt

mechanism.

The power trim and tilt switches operate

even when the main switch is off. Keep peo-

ple be away from the switches whenever

working around the motor.

Never get under the lower unit while it is tilt-

ed, even when the tilt support lever is locked.

Severe injury could occur if the outboard mo-

tor accidentally falls.

EMU41251

Engine shut-off cord (lanyard)

Attach the engine shut-off cord so that the

engine stops if the operator falls overboard

or leaves the helm. This prevents the boat

from running away under power and leaving

people stranded, or running over people or

objects.

Always attach the engine shut-off cord to a

secure place on your clothing or your arm or

leg while operating. Do not remove it to leave

the helm while the boat is moving. Do not at-

tach the engine shut-off cord to clothing that

could tear loose, or route the engine shut-off

cord where it could become entangled, pre-

venting it from functioning.

Do not route the engine shut-off cord where

it is likely to be accidentally pulled out. If the

engine shut-off cord is pulled during opera-

tion, the engine will shut off and you will lose

most steering control. The boat could slow

rapidly, throwing people and objects forward.

Safety information

EMU33810

Gasoline

Gasoline and its vapors are highly flam-

mable and explosive. Always, refuel ac-

cording to the procedure on page 58 to

reduce the risk of fire and explosion.

EMU33820

Gasoline exposure and spills

Take care not to spill gasoline. If gasoline

spills, wipe it up immediately with dry rags.

Dispose of rags properly.

If any gasoline spills onto your skin, immedi-

ately wash with soap and water. Change

clothing if gasoline spills on it.

If you swallow gasoline, inhale a lot of gaso-

line vapor, or get gasoline in your eyes, get

immediate medical attention. Never siphon

fuel by mouth.

EMU33900

Carbon monoxide

This product emits exhaust gases which con-

tain carbon monoxide, a colorless, odorless

gas which may cause brain damage or death

when inhaled. Symptoms include nausea,

dizziness, and drowsiness. Keep cockpit and

cabin areas well ventilated. Avoid blocking

exhaust outlets.

EMU33780

Modifications

Do not attempt to modify this outboard mo-

tor. Modifications to your outboard motor

may reduce safety and reliability, and render

the outboard unsafe or illegal to use.

EMU33740

Boating safety

This section includes a few of the many im-

portant safety precautions that you should

follow when boating.

EMU33710

Alcohol and drugs

Never operate after drinking alcohol or taking

drugs. Intoxication is one of the most com-

mon factors contributing to boating fatalities.

EMU40280

Personal flotation devices (PFDs)

Have an approved PFD on board for every

occupant. Yamaha recommends that you

must wear a PFD whenever boating. At a

minimum, children and non-swimmers

should always wear PFDs, and everyone

should wear PFDs when there are potentially

hazardous boating conditions.

EMU33731

People in the water

Always watch carefully for people in the wa-

ter, such as swimmers, skiers, or divers,

whenever the engine is running. When

someone is in the water near the boat, shift

into neutral and stop the engine.

Stay away from swimming areas. Swimmers

can be hard to see.

The propeller can keep moving even when

the motor is in neutral. Stop the engine when

a person is in the water near you.

EMU33751

Passengers

Consult your boat manufacturer’s instruc-

tions for details about appropriate passenger

locations in your boat and be sure all pas-

sengers are positioned properly before ac-

celerating and when operating above an idle

speed. Standing or sitting in non-designated

locations may result in being thrown either

overboard or within the boat due to waves,

wakes, or sudden changes in speed or direc-

tion. Even when people are positioned prop-

erly, alert your passengers if you must make

any unusual maneuver. Always avoid jump-

ing waves or wakes.

EMU33760

Overloading

Do not overload the boat. Consult the boat

capacity plate or boat manufacturer for max-

imum weight and number of passengers. Be

Safety information

sure that weight is properly distributed ac-

cording to the boat manufacturers instruc-

tions. Overloading or incorrect weight

distribution can compromise the boats han-

dling and lead to an accident, capsizing or

swamping.

EMU33772

Avoid collisions

Scan constantly for people, objects, and oth-

er boats. Be alert for conditions that limit your

visibility or block your vision of others.

Operate defensively at safe speeds and

keep a safe distance away from people, ob-

jects, and other boats.

Do not follow directly behind other boats or

waterskiers.

Avoid sharp turns or other maneuvers that

make it hard for others to avoid you or un-

derstand where you are going.

Avoid areas with submerged objects or

shallow water.

Ride within your limits and avoid aggres-

sive maneuvers to reduce the risk of loss

of control, ejection, and collision.

Take early action to avoid collisions. Re-

member, boats do not have brakes, and

stopping the engine or reducing throttle

can reduce the ability to steer. If you are

not sure that you can stop in time before

hitting an obstacle, apply throttle and turn

in another direction.

EMU33790

Weather

Stay informed about the weather. Check

weather forecasts before boating. Avoid

boating in hazardous weather.

EMU44160

Accident reporting

Boat operators are required by law to file a

Boating Accident Report with their boating

law enforcement agency if their boat is in-

volved in any of the following accidents:

1. There is loss of life or probable loss of

life.

2. There is personal injury that requires

medical attention beyond first aid.

3. There is property damage to boats or

other property over a certain amount.

4. There is complete loss of a boat.

Contact local law enforcement personnel if a

report is necessary.

EMU44170

Boat education and training

For U.S.A.

Operators should take a boating safety

course. This may be required in your state.

Many of the organizations listed in the next

section can provide information about cours-

es in your area.

You may also want to consider an Internet-

based program for basic boater education.

The Online Boating Safety Course provided

by the BoatU.S. Foundation, is approved by

the National Association of State Boating

Law Administrators (NASBLA) and recog-

nized by the United States Coast Guard.

Most, but not all, states accept this course to

meet their minimum requirements. While it

cannot replace an in-depth course such as

one offered by the U.S. Coast Guard, U.S.

Power Squadron, or other organization, this

online course does provide a general over-

view of the basics in boating safety, require-

ZMU06025

Safety information

ments, navigation, and operation. Upon

successful completion of the course, the

user can download a certificate of comple-

tion immediately or, for a small charge, re-

quest one by mail. To take this free course,

go to boatus.org.

For Canada

All operators of pleasure craft must illustrate

competency by means of a Pleasure Craft

Operators Card with the exception of Per-

sonal Water Craft used for rental purposes

which require a rental checklist be complet-

ed. Pleasure Craft Operators Cards can be

obtained following the completion of a com-

petency course, with an on-line option. De-

tails can be found on Transport Canada’s

website. www.tc.gc.ca

EMU33880

Passenger training

Make sure at least one other passenger is

trained to operate the boat in the event of an

emergency.

EMU33890

Boating safety publications

Be informed about boating safety. Additional

publications and information can be obtained

from many boating organizations.

EMU33590

Laws and regulations

Know the marine laws and regulations where

you will be boating- and obey them. Several

sets of rules prevail according to geographic

location, but all are basically the same as the

International Rules of the Road. The rules

presented in the following section are con-

densed- and have been provided for your

convenience only.

Contact the U.S. Coast Guard, the National

Association of State Boating Law Adminis-

trators, or your local Power Squadron for a

complete set of rules governing the waters in

which you will be using your boat.

EMU44180

Boating organizations

The following organizations provide boating

safety training and information about boating

safety and laws.

In the U.S.A.

United States Coast Guard

Consumer Affairs Staff (G-BC)

Office of Boating, Public, and Consumer Af-

fairs

U.S. Coast Guard Headquarters

Washington, D.C. 20593-0001

http://www.uscgboating.org/

United States Power Squadrons

1-888-FOR-USPS (1-888-367-8777)

http://www.usps.org/

Boat Owners Association of The United

States

1-800-336-BOAT (1-800-336-2628)

http://www.boatus.com/

National Association of State Boating

Law Administrators (NASBLA)

1500 Leestown Road, Suite 330

Lexington, KY 40511 859-225-9497

http://www.nasbla.org/

National Marine Manufacturers Associa-

tion (NMMA)

200 East Randolph Drive

Suite 5100

Chicago, IL 60601

http://www.nmma.org/

Marine Retailers Association of America

155 N. Michigan Ave. Chicago,

IL 60304

http://www.mraa.com/

Safety information

In the Canada

National Marine Manufacturers Associa-

tion Canada

14 McEwan Drive

Suite 8

Bolton, ON

L7E 1H1

http://www.nmma.org/

EMU33691

Basic boating rules (Rules of

the road)

Just as there are rules that apply when you

are driving on streets and highways, there

are waterway rules that apply when you are

driving your boat. These rules are used inter-

nationally. (For U.S.A.: and are also en-

forced by the United States Coast Guard and

local agencies.) You should be aware of

these rules, and follow them whenever you

encounter another vessel on the water.

EMU33700

Steering and sailing rules and sound

signals

Whenever two vessels on the water meet

one another, one vessel has the right-of-

way; it is called the “stand-on” vessel. The

vessel that does not have the right-of-way is

called the “give-way” or “burdened”vessel.

These rules determine which vessel has the

right-of-way, and what each vessel should

do.

Stand-on vessel

The vessel with the right-of-way has the duty

to continue its course and speed, except to

avoid an immediate collision. When you

maintain your direction and speed, the other

vessel will be able to determine how best to

avoid you.

Give-way vessel

The vessel that does not have the right-of-

way has the duty to take positive and timely

action to stay out of the way of the Stand-On

vessel. Normally, you should not cross in

front of the vessel with the right-of-way. You

should slow down or change directions brief-

ly and pass behind the other vessel. You

should always move in such a way that the

operator of the other vessel can see what

you are doing.

“ The general prudential rule ”

This rule is called Rule 2 in the International

Rules and says,

“ In obeying and construing these rules due

regard shall be had to all dangers of naviga-

tion and collision, and to any special circum-

stances, which may render a departure from

the above rules necessary in order to avoid

immediate danger.”

In other words, follow the standard rules ex-

cept when a collision will occur unless both

vessels try to avoid each other. If that is the

case, both vessels become “ Give-Way ”

vessels.

EMU25521

Rules when encountering vessels

There are three main situations that you may

encounter with other vessels which could

lead to a collision unless the Steering Rules

are followed:

Meeting: (you are approaching another ves-

sel head-on)

Crossing: (you are traveling across the oth-

er vessel’s path)

Overtaking: (you are passing or being

passed by another vessel)

In the following illustration, your boat is in the

center. You should give the right-of-way to

any vessels shown in white area (you are the

Give-Way vessel). Any vessels in the shad-

ed area must yield to you (they are the Give-

Safety information

Way vessels). Both you and the meeting

vessel must alter course to avoid each other.

Meeting

If you are meeting another power vessel

head on, and are close enough to run the risk

of collision, neither of you has the right-of-

way Both of you should alter course to avoid

an accident. You should keep the other ves-

sel on your port (left) side. This rule doesn’t

apply if both of you will clear one another if

you continue on your set course and speed.

Crossing

When two power driven vessels are crossing

each other’s path close enough to run the

risk of collision, the vessel which has the oth-

er on the starboard (right) side must keep out

of the way of the other. If the other vessel is

on your right, you must keep out of its way;

you are the Give-Way vessel. If the other

vessel is on your port (left) side, remember

that you should maintain course and direc-

tion, provided the other vessel gives you the

right-of-way as it should.

Overtaking

If you are passing another vessel, you are

the “Give-Way” vessel. This means that the

other vessel is expected to maintain its

course and speed. You must stay out of its

way until you are clear of it. Likewise, if an-

other vessel is passing you, you should

maintain your speed and direction so that the

other vessel can steer itself around you.

EMU25531

Other special situations

There are three other rules you should be

aware of when driving your boat around oth-

er vessels.

Narrow channels and bends

When navigating in narrow channels, you

should keep to the right when it is safe and

practical to do so. If the operator of a power-

driven vessel is preparing to go around a

bend that may obstruct the view of other wa-

ter vessels, the operator should sound a pro-

longed blast on the whistle (4 to 6 seconds).

If another vessel is around the bend, it too

should sound the whistle. Even if no reply is

heard, however, the vessel should still pro-

ceed around the bend with caution. If you

navigate such waters with your boat, you will

need to carry a portable air horn, available

from local marine supply stores.

Safety information

Fishing vessel right-of-way

All vessels that are fishing with nets, lines or

trawls are considered to be “fishing vessels”

under the International Rules. Vessels with

trolling lines are not considered fishing ves-

sels. Fishing vessels have the right-of-way

regardless of position. Fishing vessels can-

not, however, impede the passage of other

vessels in narrow channels.

Sailing vessel right-of-way

Sailing vessels should normally be given the

right-of-way. The exceptions to this are:

1. When the sailing vessel is overtaking the

power-driven vessel, the power-driven

vessel has the right-of-way.

2. Sailing vessels should keep clear of any

fishing vessel.

3. In a narrow channel, a sailing vessel

should not hamper the safe passage of

a power-driven vessel that can navigate

only in such a channel.

Reading buoys and other markers

The waters of the United States are marked

for safe navigation by the lateral system of

buoyage. Simply put, buoys and markers

have an arrangement of shapes, colors,

numbers and lights to show which side of the

buoy a boater should pass on when navigat-

ing in a particular direction. The markings on

these buoys are oriented from the perspec-

tive of being entered from seaward (the boat-

er is going towards the port). This means that

red buoys are passed on the starboard

(right) side when proceeding from open wa-

ter into port, and black buoys are to port (left)

side. When navigating out of port, your posi-

tion with respect to the buoys should be re-

versed; red buoys should be to port and

black buoys to starboard.

Many bodies of water used by boaters are

entirely within the boundaries of a particular

state. The Uniform State Waterway Marking

System has been devised for these waters.

This system uses buoys and signs with dis-

tinctive shapes and colors to show regulatory

or advisory information. These markers are

white with black letters and orange boarders.

They signify speed zones, restricted areas,

danger areas, and general information.

Remember, markings may vary by geo-

graphic location. Always consult local boat-

ing authorities before driving your boat in

unfamiliar waters.

Safety information

ZMU01708

General information

EMU25171

Identification numbers record

EMU25184

Outboard motor serial number

The outboard motor serial number is

stamped on the label attached to the port

side of the clamp bracket.

Record your outboard motor serial number in

the spaces provided to assist you in ordering

spare parts from your Yamaha dealer or for

reference in case your outboard motor is sto-

len.

EMU34943

Digital electronic control serial

number

The digital electronic control serial number is

stamped on the label attached to the digital

electronic control box.

Record your digital electronic control serial

number in the spaces provided to assist you

in newly connecting the digital electronic

control to the outboard motor.

TIP:

Consult your Yamaha dealer if you have any

questions concerning the digital electronic

control serial number.

1. Outboard motor serial number location

ZMU07134

1. Digital electronic control serial number loca-

tion

ZMU05885

ZMU05887

General information

EMU41570

Key number

The key identification number is stamped on

the spare key as shown in the illustration.

Keep the spare key in a safe place and

record this number in the space provided for

reference in case that you need a new key.

EMU38980

EC Declaration of Conformity

(DoC)

This declaration is included with outboard

motors that conform to European regula-

tions.

This outboard motor conforms to certain por-

tions of the European Parliament directive

relating to machinery.

Each conformed outboard motor accompa-

nied with EC DoC.EC DoC contains the fol-

lowing information;

Name of Engine Manufacture

Model name

Product code of model (Approved model

code)

Code of conformed directives

EMU38992

CE Marking

This label is affixed to outboard motors that

conform to European regulations.

Outboard motors affixed with this “CE”mark-

ing conform with the directives of;

2006/42/EC, 94/25/EC - 2003/44/EC and

2004/108/EC.

1. Key number

ZMU07133

1. CE marking location

ZMU05943

ZMU06040

General information

EMU33523

Read manuals and labels

Before operating or working on this outboard motor:

Read this manual.

Read any manuals supplied with the boat.

Read all labels on the outboard motor and the boat.

If you need any additional information, contact your Yamaha dealer.

EMU33832

Warning labels

If these labels are damaged or missing, contact your Yamaha dealer for replacements.

F225, LF225, F250, LF250, F300, LF300, F250D1, FL250D1, F300B1, FL300B1

ZMU07261

General information

EMU34651

Contents of labels

The above warning labels mean as follows.

WARNING

EWM01681

Keep hands, hair, and clothing away

from rotating parts while the engine is

running.

Do not touch or remove electrical parts

when starting or during operation.

WARNING

EWM01671

Read Owner’s Manuals and labels.

Wear an approved personal flotation

device (PFD).

Attach engine shut-off cord (lanyard) to

your PFD, arm, or leg so the engine

stops if you accidentally leave the

helm, which could prevent a runaway

boat.

EMU33850

Other labels

ZMU06191

ZMU05710

General information

EMU35132

Symbols

The following symbols mean as follows.

Notice/Warning

Read Owner’s Manual

Hazard caused by continuous rotation

Electrical hazard

ZMU05696

ZMU05664

ZMU05665

ZMU05666

Specifications and requirements

EMU40500

Specifications

TIP:

“(SUS)” indicates that the specification is for

the outboard motor when it is equipped with

a stainless steel propeller.

EMU2821R

Dimension and weight:

Overall length:

958 mm (37.7 in)

Overall width:

634 mm (25.0 in)

Overall height X:

1890 mm (74.4 in)

Overall height U:

F250CA 2017 mm (79.4 in)

F250DET1 2017 mm (79.4 in)

F300BET1 2017 mm (79.4 in)

F300CA 2017 mm (79.4 in)

FL250DET1 2017 mm (79.4 in)

FL300BET1 2017 mm (79.4 in)

LF250CA 2017 mm (79.4 in)

LF300CA 2017 mm (79.4 in)

Motor transom height X:

643 mm (25.3 in)

Motor transom height U:

F250CA 770 mm (30.3 in)

F250DET1 770 mm (30.3 in)

F300BET1 770 mm (30.3 in)

F300CA 770 mm (30.3 in)

FL250DET1 770 mm (30.3 in)

FL300BET1 770 mm (30.3 in)

LF250CA 770 mm (30.3 in)

LF300CA 770 mm (30.3 in)

Dry weight (SUS) X:

260 kg (573 lb)

Dry weight (SUS) U:

F250CA 268 kg (591 lb)

F250DET1 268 kg (591 lb)

F300BET1 268 kg (591 lb)

F300CA 268 kg (591 lb)

FL250DET1 268 kg (591 lb)

FL300BET1 268 kg (591 lb)

LF250CA 268 kg (591 lb)

LF300CA 268 kg (591 lb)

Performance:

Full throttle operating range:

5000–6000 r/min

Rated power:

F225CA 165.5 kW (225 HP)

F250CA 183.8 kW (250 HP)

F250DET1 183.8 kW (250 HP)

F300BET1 220.6 kW (300 HP)

F300CA 220.6 kW (300 HP)

FL250DET1 183.8 kW (250 HP)

FL300BET1 220.6 kW (300 HP)

LF225CA 165.5 kW (225 HP)

LF250CA 183.8 kW (250 HP)

LF300CA 220.6 kW (300 HP)

Idle speed (in neutral):

650-750 r/min

Power unit:

Type:

4-stroke DOHC V6 24valves

Total displacement:

4169 cm3 (254.4 c.i.)

Bore  stroke:

96.0  96.0 mm (3.78  3.78 in)

Ignition system:

TCI

Spark plug (NGK):

LFR6A-11

Spark plug gap:

1.0–1.1 mm (0.039–0.043 in)

Steering system:

Remote steering

Starting system:

Electric starter

Starting carburetion system:

Fuel injection

Specifications and requirements

Valve clearance IN (cold engine):

0.17–0.24 mm (0.0067–0.0094 in)

Valve clearance EX (cold engine):

0.31–0.38 mm (0.0122–0.0150 in)

Min. cold cranking amps (CCA/SAE):

680 A

Min. marine cranking amps (MCA/ABYC):

770 A

Min. reserve capacity (RC/SAE):

160 minutes

Maximum generator output:

70 A

Lower unit:

Gear shift positions:

Forward-neutral-reverse

Gear ratio:

1.75(21/12)

Trim and tilt system:

Power trim and tilt

Propeller mark:

F225CA M/T

F250CA M/T

F250DET1 M/T

F300BET1 M/T

F300CA M/T

FL250DET1 ML/TL

FL300BET1 ML/TL

LF225CA ML/TL

LF250CA ML/TL

LF300CA ML/TL

Fuel and oil:

Recommended fuel:

F225CA Regular unleaded gasoline

F250CA Regular unleaded gasoline

F250DET1 Regular unleaded gaso-

line

F300BET1 Premium unleaded gaso-

line

F300CA Premium unleaded gasoline

FL250DET1 Regular unleaded gaso-

line

FL300BET1 Premium unleaded gas-

oline

LF225CA Regular unleaded gasoline

LF250CA Regular unleaded gasoline

LF300CA Premium unleaded gaso-

line

Min. pump octane number (PON):

F225CA 87

F250CA 87

F250DET1 87

F300BET1 89

F300CA 89

FL250DET1 87

FL300BET1 89

LF225CA 87

LF250CA 87

LF300CA 89

Recommended engine oil:

YAMALUBE 4M FC-W or 4-stroke

outboard motor oil

Recommended engine oil grade 1:

SAE 10W-30/10W-40/5W-30

API SE/SF/SG/SH/SJ/SL

Engine oil quantity (without oil filter re-

placement):

6.0 L (6.34 US qt, 5.28 Imp.qt)

Engine oil quantity (with oil filter replace-

ment):

6.3 L (6.66 US qt, 5.54 Imp.qt)

Lubrication system:

Wet sump

Recommended gear oil:

Yamalube Marine Gearcase Lube or

Hypoid gear oil

Recommended gear oil grade:

SAE 80W API GL-5 /

SAE 90 API GL-5

Gear oil quantity:

1.040 L (1.099 US qt, 0.915 Imp.qt)

Specifications and requirements

Tightening torque:

Spark plug:

28 Nm (2.86 kgf-m, 20.7 ft-lb)

Propeller nut:

54 Nm (5.51 kgf-m, 39.8 ft-lb)

Engine oil drain bolt:

27 Nm (2.75 kgf-m, 19.9 ft-lb)

Engine oil filter:

18 Nm (1.84 kgf-m, 13.3 ft-lb)

EMU33554

Installation requirements

EMU40480

Boat horsepower rating

WARNING

EWM01560

Overpowering a boat can cause severe

instability.

Before mounting the outboard motor, check

that the horsepower of the outboard motor

does not exceed the maximum horsepower

rating on the capacity plate of the boat. If the

boat does not have a capacity plate, consult

the boat manufacturer.

EMU40490

Mounting outboard motor

WARNING

EWM02500

Improper mounting of the outboard mo-

tor could result in hazardous condi-

tions such as poor handling, loss of

control, or fire hazards.

Because the outboard motor is very

heavy, special equipment and training

is required to mount it safely.

Your dealer or other person experienced in

proper rigging should mount the outboard

motor using correct equipment and complete

rigging instructions. For further information,

see page 50.

EMU34952

Digital electronic control

requirements

The digital electronic control be equipped

with a start-in-gear protection device(s). This

device prevents the engine from starting un-

less it is in neutral.

WARNING

EWM01580

If the engine starts in gear, the boat can

move suddenly and unexpectedly, pos-

sibly causing a collision or throwing

passengers overboard.

If the engine ever starts in gear, the

start-in-gear protection device is not

working correctly and you should dis-

continue using the outboard. Contact

your Yamaha dealer.

This digital electronic control unit is only

available for the outboard motor which you

have purchased.

Prior to use of the digital electronic control

unit, set it in order to operate your outboard

motor only. Otherwise, it will not be possible

to operate the outboard motor.

Perform setting of the outboard motor and

the digital electronic control unit in the follow-

ing cases.

If a used outboard motor is installed

If the digital electronic control unit is re-

placed

If the ECM (Electronic control module) of

the used outboard motor is replaced

If the ECM (Electronic control module) of

the digital electronic control unit is re-

placed

Consult your Yamaha dealer for setting.

Specifications and requirements

EMU25694

Battery requirements

EMU25713

Specifications of Battery

Use a fully charged battery that meets the

following specifications. The engine cannot

be started if battery voltage is too low.

NOTICE

ECM01061

Do not use a battery that does not meet

the specified capacity. If a battery that

does not meet specifications is used, the

electric system could perform poorly or

be overloaded, causing electric system

damage.

EMU36290

Mounting battery

Mount the battery holder securely in a dry,

well-ventilated, vibration-free location in the

boat. WARNING! Do not put flammable

items, or loose heavy or metal objects in

the same compartment as the battery.

Fire, explosion or sparks could result.

[EWM01820]

EMU36300

Multiple batteries

To connect multiple batteries, such as for

multiple engine configurations or for an ac-

cessory battery, consult your Yamaha dealer

about battery selection and correct wiring.

EMU41600

Propeller selection

Next to selecting an outboard motor, select-

ing the right propeller is one of the most im-

portant purchasing decisions a boater can

make. The type, size, and design of your pro-

peller have a direct impact on acceleration,

top speed, fuel economy, and even engine

life. Yamaha designs and manufactures pro-

pellers for every Yamaha outboard motor

and every application.

Your Yamaha dealer can help you select the

right propeller for your boating needs. Select

a propeller that will allow the engine to reach

the middle or upper half of the operating

range at full throttle with the maximum boat-

load. Generally, select a larger pitch propel-

ler for a smaller operating load and a smaller

pitch propeller for a heavier load. If you carry

loads that vary widely, select the propeller

that lets the engine run in the proper range

for your maximum load but remember that

you may need to reduce your throttle setting

to stay within the recommended engine

speed range when carrying lighter loads.

Yamaha recommends to use a propeller suit-

able for the “Shift Dampener System (SDS)”.

For further information, consult your Yamaha

dealer.

To check the propeller, see page 85.

Minimum cold cranking amps

(CCA/SAE):

680 A

Minimum marine cranking amps

(MCA/ABYC):

770 A

Minimum reserve capacity (RC/SAE):

160 minutes

1. Propeller pitch in inches

ZMU05937

1 2

Specifications and requirements

EMU36310

Counter rotation models

Standard outboard motors rotate clockwise.

Counter rotation models rotate counterclock-

wise. Counter rotation models are typically

used in multiple motor setups and are

marked with an “L” on the gear case above

the anti-ventilation plate.

On counter rotation models, be sure to use a

propeller intended for counterclockwise rota-

tion. These propellers are identified with the

letter “L” after the size indication on the pro-

peller. WARNING! Never use a standard

propeller with a counter rotation motor,

or a counter rotation propeller with a

standard motor. Otherwise the boat could

go in the direction opposite of that ex-

pected (for example, reverse instead of

forward), which could lead to an accident.

[EWM01810]

For instructions on propeller removal and in-

stallation, see page 86 and 87.

EMU35140

Start-in-gear protection

Yamaha outboard motors or Yamaha-ap-

proved digital electronic control units are

equipped with start-in-gear protection de-

vice(s). This feature permits the engine to be

started only when it is in neutral. Always se-

lect neutral before starting the engine.

EMU41952

Engine oil requirements

Select an oil grade according to the average

temperatures in the area where the outboard

motor will be used.

If oil grades listed under Recommended en-

gine oil grade 1 are not available, select an

alternative oil grade listed under Recom-

mended engine oil grade 2.

Recommended engine oil grade 1

2. Type of propeller (propeller mark)

3. Propeller diameter in inches

1. Propeller diameter in inches

2. Propeller pitch in inches

3. Type of propeller (propeller mark)

ZMU04608

1 2 3

Recommended engine oil:

YAMALUBE 4M FC-W or 4-stroke out-

board motor oil

Recommended engine oil grade 1:

SAE 10W-30/10W-40/5W-30

API SE/SF/SG/SH/SJ/SL

Recommended engine oil grade 2:

SAE 15W-40/20W-40/20W-50

API SH/SJ/SL

Engine oil quantity (without oil filter re-

placement):

6.0 L (6.34 US qt, 5.28 Imp.qt)

Engine oil quantity (with oil filter replace-

ment):

6.3 L (6.66 US qt, 5.54 Imp.qt)

ZMU06854

122˚F

50˚C

104

SAE API

-10

-4

-20

10W–30

10W–40

5W–30

Specifications and requirements

Recommended engine oil grade 2

EMU36360

Fuel requirements

EMU41331

Gasoline

Use a good quality gasoline that meets the

minimum octane requirement. If knocking or

pinging occurs, use a different brand of gas-

oline or premium unleaded fuel. Yamaha

recommends that you use alcohol-free gaso-

line (see Gasoline with Ethanol) whenever

possible.

The use of a poor quality gasoline may result

in starting and running problems. If you en-

counter drivability problems, which you sus-

pect could be related to the fuel you are

using, we recommend that you switch to a

recognized high quality brand of gasoline,

such as a gasoline that is advertised as Top

Tier Detergent Gasoline. Failure to comply

with these recommendations may also result

in unscheduled maintenance, fuel system

damage, and internal engine damage.

NOTICE

ECM01981

Do not use leaded gasoline. Leaded

gasoline can seriously damage the en-

gine.

Avoid getting water and contaminants

in the fuel tank. Contaminated fuel can

cause poor performance or engine

damage. Use only fresh gasoline that

has been stored in clean containers.

Gasoline with Ethanol

Two types of gasoline are commonly avail-

able in the U.S.A. and Canada for use in au-

tomobiles and boats: conventional gasoline

without Ethanol and gasoline with Ethanol,

ZMU06855

122˚F

50˚C

104

SAE API

-10

-4

-20

15W–40

20W–40

20W–50

Recommended fuel:

F225CA Regular unleaded gasoline

F250CA Regular unleaded gasoline

F250DET1 Regular unleaded gasoline

F300BET1 Premium unleaded gaso-

line

F300CA Premium unleaded gasoline

FL250DET1 Regular unleaded gaso-

line

FL300BET1 Premium unleaded gaso-

line

LF225CA Regular unleaded gasoline

LF250CA Regular unleaded gasoline

LF300CA Premium unleaded gasoline

Min. pump octane number (PON):

F225CA 87

F250CA 87

F250DET1 87

F300BET1 89

F300CA 89

FL250DET1 87

FL300BET1 89

LF225CA 87

LF250CA 87

LF300CA 89

Specifications and requirements

which is typically referred to as E10 gasoline.

According to federal regulations, E10 gaso-

line may contain up to 10% Ethanol.

A high quality gasoline without Ethanol is the

preferred fuel for your Yamaha outboard mo-

tor. However, if gasoline with Ethanol is the

only fuel available in your area, your Yamaha

outboard motor is calibrated to run properly

on fresh E10 gasoline that meets the mini-

mum octane requirement specified for this

model.

NOTICE

ECM02401

Never use a gasoline for your outboard

motor that contains more than 10% Etha-

nol, such as E15 which contains 15% Eth-

anol or E85 which contains 85% Ethanol,

or gasoline containing any amount of

Methanol. These fuels can cause starting

and running problems, as well as serious

fuel system and internal engine damage.

Gasoline containing ethanol has several

properties that may cause boat fuel system

problems.

Ethanol is a strong solvent (cleaning

agent) that can clean gum and varnish de-

posits from a boat’s fuel system, particular-

ly in older boats, as well as tanks and pipes

used in gasoline distribution. These re-

leased deposits contaminate the fuel and

can cause problems, such as clogged fuel

filters, carburetors, or fuel injectors, which

could result in engine damage.

Ethanol may dissolve resins used in the

construction of fiberglass fuel tanks. The

dissolved resins contaminate the fuel and

can cause problems, such as clogged fuel

filters, carburetors, or fuel injectors, which

could result in engine damage.

Ethanol is hygroscopic (has a strong at-

traction to water). Therefore, any water

that inadvertently enters the fuel system,

including moisture that is absorbed from

the air, will mix with the ethanol in the gas-

oline. If the amount of water is excessive,

the ethanol and water mixture will separate

from the gasoline in a layer at the bottom

of the fuel tank. This ethanol and water

mixture is very corrosive to aluminum fuel

tanks and fuel system components.

The usable life span of E10 gasoline may

be shorter than the normal length of off-

season boat storage, causing starting and

running problems related to stale fuel.

For more information on using fuel contain-

ing ethanol, visit: http://www.yamaha-mo-

tor.com

Gasoline Filtration

Yamaha outboard motors are equipped with

internal fuel filters. However, excessive wa-

ter or debris entering your engine’s fuel sys-

tem could prematurely clog the internal

filters, causing starting and running prob-

lems, fuel system damage, and internal en-

gine damage. Therefore, it is recommended

that an external 10-micron water-separating

fuel filter be installed on your boat and ser-

viced frequently. Consult your authorized

Yamaha dealer for a 10-micron filter that

meets your engine’s requirements.

EMU41341

Gasoline Additives

Gasoline blends change to meet automobile

emission regulations and economic condi-

tions. Additives, added by gasoline distribu-

tors, necessary for proper automobile engine

operation and durability, may not be suffi-

cient for typical boat applications. Intake

valve and combustion chamber deposits

may accumulate in boat engines more rapid-

ly than encountered in automotive use. In ad-

dition, gasoline used for boating will typically

Specifications and requirements

age longer between refills than gasoline

used in automobiles, resulting in stale and

unusable gasoline that may cause starting

and running problems, fuel system damage,

and internal engine damage.

Yamaha recommends the use of two Ya-

malube gasoline additives to reduce internal

deposits and extend the storage life of gaso-

line. Continuous use of Yamalube Ring Free

Fuel Additive Plus reduces harmful internal

deposits. Yamalube Fuel Stabilizer & Condi-

tioner Plus added to fresh gasoline will help

protect the fuel system from varnishing while

helping to keep the gasoline’s octane level

from decreasing excessively during storage.

Other additives may also be available on the

market that may have varying degrees of ef-

fectiveness. Consult your Yamaha dealer

concerning what may work best for the local-

ly available gasoline and environmental con-

ditions.

EMU41350

Anti-fouling paint

A clean hull is required to maintain your

boat’s performance. Boats moored in the wa-

ter should be protected from marine growth

(barnacles, mussels, and marine plants). If

approved by regulations for your area, the

bottom of the hull can be coated with an anti-

fouling paint to inhibit marine growth.

Anti-fouling paints specifically formulated for

use on aluminum may be applied to the out-

board motor. The original Yamaha paint sur-

face may be scuffed lightly before applying

anti-fouling paint, but do not remove the orig-

inal paint. Removal of the original paint will

increase the rate of corrosion.

NOTICE

ECM02410

Anti-fouling paint for fiberglass and wood

may contain materials, such as copper,

graphite, and tin, that can cause corro-

sion if applied to aluminum boats and

outboard motor components. Never ap-

ply these types of paint to your outboard

motor because rapid corrosion damage

could occur.

Sacrificial anodes are attached to the out-

board motor to provide corrosion protection

and must never be painted.

NOTICE

ECM02420

Painted sacrificial anodes will not provide

corrosion protection.

EMU40301

Outboard motor disposal

requirements

Never illegally discard (dump) the outboard

motor. Yamaha recommends consulting the

dealer about discarding the outboard motor.

EMU36352

Emergency equipment

Keep the following items onboard in case

there is trouble with the outboard motor.

A tool kit with assorted screwdrivers, pli-

ers, wrenches (including metric sizes), and

electrical tape.

Waterproof flashlight with extra batteries.

An extra engine shut-off cord (lanyard)

with clip.

Spare parts, such as an extra set of spark

plugs.

Consult your Yamaha dealer for details.

EMU25222

Emission control information

EMU25230

North American models

This engine conforms to U.S. Environmental

Protection Agency (EPA) regulations for ma-

rine SI engines. See the label affixed to your

engine for details.

Specifications and requirements

EMU31561

Approval label of emission control certif-

icate

This label is attached to the bottom cowling.

New Technology; (4-stroke) MFI

EMU25263

Manufactured date label

This label is attached to the clamp bracket or

the swivel bracket.

EMU25274

Star labels

Your outboard motor is labeled with a Cali-

fornia Air Resources Board (CARB) star la-

bel. See below for a description of your

particular label.

1. Approval label location

ZMU06893

ZMU06895

EMISSION CONTROL INFORMATION MFI

THIS ENGINE CONFORMS TO CALIFORNIA AND U.S. EPA EXHAUST

REGULATIONS FOR SI MARINE ENGINES. REFER TO THE OWNER'S

MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.

MEETS U.S. EPA EVAP STANDARDS USING CERTIFIED COMPONENTS.

FAMILY:

DISPLACEMENT: liters

SPARK PLUG:

FUEL: GASOLINE

FELs(HC+NOx / CO)

: / g/kW-hr MAX POWER: kW

IDLE SPEED: ± rpm IN NEUTRAL

SPARK PLUG GAP (mm):

VALVE LASH (mm) IN: EX:

YAMAHA MOTOR CO.,LTD.

INFORMATION ANTIPOLLUTION MFI

CE MOTEUR EST CONFORME AUX NORMES D’ÉMISSIONS EPA DES É.-U. ET DE LA

CALIFORNIE POUR MOTEURS MARINS À ÉTINCELLE. POUR LES SPÉCIFICATIONS ET LES

RÉGLAGES À EFFECTUER, CONSULTEZ LE MANUEL DU PROPRIÉTAIRE. INSTALLÉ AVEC

LES COMPOSANTS HOMOLOGUÉS, IL SATISFAIT AUX NORMES EVAP EPA DES É.-U.

YAMAHA MOTOR CO.,LTD.

FAMILLE :

CYLINDRÉE : litre

BOUGIE :

CARBURANT : ESSENCE

FELs(HC+NOx / CO)

: / g/kW-h

PUISS. MAX. : kW

RALENTI : ± tr/mm AU POINT MORT

BOUGIE-ÉCARTEMENT (mm) :

JEU DE SOUPAPES (mm) ADM: ÉCH:

1. Manufactured date label location

1. Star labels location

ZMU06896

ZMU07138

Specifications and requirements

EMU40330

One Star—Low Emission

The one-star label identifies engines that

meet the Air Resources Board’s Personal

Watercraft and Outboard marine engine

2001 exhaust emission standards. Engines

meeting these standards have 75% lower

emissions than conventional carbureted two-

stroke engines. These engines are equiva-

lent to the U.S. EPA’s 2006 standards for

marine engines.

EMU40340

Two Stars Very Low Emission—

The two-star label identifies engines that

meet the Air Resources Board’s Personal

Watercraft and Outboard marine engine

2004 exhaust emission standards. Engines

meeting these standards have 20% lower

emissions than One Star-Low-Emission en-

gines.

EMU40350

Three Stars Ultra Low Emission—

The three-star label identifies engines that

meet the Air Resources Board’s Personal

Watercraft and Outboard marine engine

2008 exhaust emission standards or the

Sterndrive and Inboard marine engine 2003-

2008 exhaust emission standards. Engines

meeting these standards have 65% lower

emissions than One Star-Low-Emission en-

gines.

EMU33861

Four Stars—Super Ultra Low Emission

The four-star label identifies engines that

meet the Air Resources Board’s Sterndrive

and Inboard marine engine 2009 exhaust

emission standards. Personal Watercraft

and Outboard marine engines may also

comply with these standards. Engines meet-

ing these standards have 90% lower emis-

sions than One Star-Low-Emission engines.

ZMU01702

ZMU01703

ZMU01704

ZMU05663

Components

EMU2579Y

Components diagram

TIP:

* May not be exactly as shown; also may not be included as standard equipment on all mod-

els (order from dealer).

F225, LF225, F250, LF250, F300, LF300, F250D1, FL250D1, F300B1, FL300B1

ZMU07139

1. Top cowling

2. Idle hole

3. Anti-cavitation plate

4. Trim tab (anode)

5. Propeller*

6. Cooling water inlet

7. Clamp bracket

8. Tilt support lever

9. Cowling lock lever

10. Flushing device

11. Power trim and tilt switch

Components

ZMU07140

1. Ignition coil

2. Oil dipstick

3. Cowling lock lever

4. Power trim and tilt switch

5. Flushing device

6. Oil level plug

7. Gear oil drain screw

8. Cooling water inlet

9. Anode

10. Power trim and tilt unit

11. Fuel filter

12. Fuse box

13. Oil filler cap

Components

123

ZMU07231

1. Digital electronic control (single type)*

2. Switch panel (for use with single type)*

3. Digital electronic control (twin type)*

4. Switch panel (for use with twin type)*

5. Start/Stop switch panel (for use with twin

type)*

6. All Start/Stop switch panel (for use with twin

type)*

7. Engine shut-off switch

8. Clip

Components

EMU34961

Digital Electronic Control box

The digital electronic control box actuates

the shifter, the throttle and remote electrical

operations. Make sure that the active indica-

tor lights and that the digital electronic con-

trol unit is correctly connected to the

outboard motor.

SET

CANCEL

ZMU07205

1. Tachometer unit (Square type)*

2. Tachometer unit (Round type)*

3. Speedometer unit (Square type)*

4. Speed & fuel meter unit (Square type)*

5. Speed & fuel meter unit (Round type)*

6. Fuel management meter unit (Square type)*

7. Command Link Plus Display*

ZMU05850

Components

EMU34973

Digital electronic control-active

indicator

The digital electronic control-active indicator

indicates that the digital electronic control

system is in the operating state.

Lights: Operation of both shift and throttle

possible.

Blinks (when the gear shift is in neutral

only): Shift not operable. Only throttle op-

eration available.

Off: Shift and throttle not operable.

EMU34984

Digital electronic control-alert

indicator

The digital electronic control-alert indicator

lights when trouble occurs in the connection

between the digital electronic control and

outboard motor. Consult your Yamaha deal-

er for details.

1. Control lever

2. Digital electronic control-active indicator

3. Digital electronic control-alert indicator

4. Free throttle switch

5. Throttle friction adjuster

6. Power trim and tilt switch

ZMU05851

ZMU05888

1. Digital electronic control-active indicator

1. Digital electronic control-alert indicator

ZMU05890

ZMU05889

ZMU05891

Components

EMU34992

Control lever

Moving the lever forward from the neutral po-

sition engages forward gear. Pulling the le-

ver back from neutral engages reverse. The

engine will continue to run at idle until the le-

ver is moved 22.5 (a detent can be felt).

Moving the lever farther opens the throttle,

and the engine will begin to accelerate.

Digital electronic control for twin type has the

function of automatically synchronizing the

engine speeds of both engines of the port

and starboard sides.

EMU35001

Free throttle switch

In neutral, keep this switch pressed, move

the control lever forward, and release the

switch after the digital electronic control-ac-

tive indicator starts blinking. While the indica-

tor blinks, you can open or close the throttle.

This can also be done when the control lever

is set in reverse.

1. Neutral “ ”

2. Forward “ ”

3. Reverse “ ”

4. Shift

5. Fully closed

6. Throttle

7. Fully open

ZMU05878

1. Fully open

2. Fully closed

3. Free accelerator

ZMU05880

F N

ZMU05881

322.5

ZMU05882

Components

The free throttle switch can only be used

when the control lever is in the neutral po-

sition.

During operation the digital electronic con-

trol-active indicator changes from continu-

ously lit to blinking. When the indicator

starts blinking, the throttle begins to open

after the control lever is moved at least

22.5.

After using the free throttle switch, return

the control lever to the neutral position.

The free throttle switch will return automat-

ically to its set position. The digital elec-

tronic control-active indicator will change

from blinking to continuously lit and the

digital electronic control will then engage

forward and reverse normally.

EMU35250

Throttle friction adjuster

A friction device provides adjustable resis-

tance to movement of the control lever, and

can be set according to operator preference.

To increase resistance, turn the adjuster

clockwise. To decrease resistance, turn the

adjuster counterclockwise.

WARNING

EWM01770

If the friction is too small, the control le-

ver could move freely and cause an ac-

cident.

Do not overtighten the friction adjuster.

If there is too much resistance, it could

be difficult to move the control lever,

which could result in an accident.

When constant speed is desired, tighten the

adjuster to maintain the desired throttle set-

ting.

EMU25995

Engine shut-off cord (lanyard) and

clip

The clip must be attached to the engine shut-

off switch for the engine to run. The cord

should be attached to a secure place on the

operator’s clothing, or arm or leg. Should the

operator fall overboard or leave the helm, the

cord will pull out the clip, stopping ignition to

1. Fully open

2. Fully closed

3. Free accelerator

ZMU05883

322.5

ZMU05820

ZMU05819

Components

the engine. This will prevent the boat from

running away under power. WARNING! At-

tach the engine shut-off cord to a secure

place on your clothing, or your arm or leg

while operating. Do not attach the cord to

clothing that could tear loose. Do not

route the cord where it could become en-

tangled, preventing it from functioning.

Avoid accidentally pulling the cord dur-

ing normal operation. Loss of engine

power means the loss of most steering

control. Also, without engine power, the

boat could slow rapidly. This could cause

people and objects in the boat to be

thrown forward. [EWM00122]

EMU41551

Main switch

The main switch controls the ignition system;

its operation is described below.

“ ” (off)

With the main switch in the “ ” (off) posi-

tion, the electrical circuits are off, and the key

can be removed.

“ ” (on)

With the main switch in the “ ” (on) posi-

tion, the electrical circuits are on, and the key

cannot be removed. The engine can be start-

ed by pressing the Start/Stop button.

“ ” (start)

With the main switch in the “ ” (start) po-

sition, the starter motor turns to start the en-

gine. When the key is released, it returns

automatically to the “ ” (on) position.

EMU41621

Start/Stop switch panel

The engine can be started or turned off by

1. Engine shut-off cord (lanyard)

2. Clip

3. Engine shut-off switch

ZMU07143

ZMU07144

OFF

ZMU07145

START

OFF

ZMU07146

Components

pressing the Start/Stop button. For twin type,

it is possible to start or turn off individual en-

gine. The indicator for the corresponding en-

gine will come on.

PORT:Port side engine

STBD:Starboard side engine

EMU41631

All Start/Stop switch panel

The Start/Stop button allows all engines to

start or turn off.

EMU35153

Power trim and tilt switch on digital

electronic control

The power trim and tilt system adjusts the

outboard motor angle in relation to the tran-

som. Pressing the switch “ ” (up) trims the

outboard motor up, and then tilts it up. Press-

ing the switch “ ” (down) tilts the outboard

motor down and trims it down. When the

switch is released, the outboard motor will

stop in its current position. For instructions

on using the power trim and tilt switch, see

pages 64 and 66.

EMU26155

Power trim and tilt switch on bottom

cowling

The power trim and tilt switch is located on

the side of the bottom cowling. Pushing the

switch “ ” (up) trims the outboard motor up,

and then tilts it up. Pushing the switch “ ”

(down) tilts the outboard motor down and

trims it down. When the switch is released,

the outboard motor will stop in its current po-

sition.

For instructions on using the power trim and

tilt switch, see page 66.

WARNING

EWM01031

Use the power trim and tilt switch located

on the bottom cowling only when the boat

is at a complete stop with the engine off.

Attempting to use this switch while the

boat is moving could increase the risk of

falling overboard and could distract the

operator, increasing the risk of collision

with another boat or an obstacle.

1. Indicator

2. Start/Stop button

1. All Start/Stop button

ZMU07174

ZMU07176

ZMU05822

Components

EMU35160

Power trim and tilt switches (twin

type)

The power trim and tilt system adjusts the

outboard motor angle in relation to the tran-

som. Pushing the switch “ ” (up) trims the

outboard motor up, and then tilts it up. Press-

ing the switch “ ” (down) tilts the outboard

motor down and trims it down. When the

switch is released, the outboard motor will

stop in its current position.

On the twin engine control, the switch on

the control grip controls both outboard mo-

tors at the same time.

For instructions on using the power trim

and tilt switches, see pages 64 and 66.

EMU26244

Trim tab with anode

WARNING

EWM00840

An improperly adjusted trim tab could

cause difficult steering. Always test run

after the trim tab has been installed or re-

placed to be sure steering is correct. Be

sure you have tightened the bolt after ad-

justing the trim tab.

The trim tab should be adjusted so that the

steering control can be turned to either the

right or left by applying the same amount of

force.

If the boat tends to veer to the left (port side),

turn the trim tab rear end to the port side “A”

in the figure. If the boat tends to veer to the

right (starboard side), turn the trim tab end to

the starboard side “B” in the figure.

NOTICE

ECM00840

The trim tab also serves as an anode to

protect the engine from electrochemical

corrosion. Never paint the trim tab as it

will become ineffective as an anode.

1. Power trim and tilt switch

ZMU07151

ZMU05835

1. Trim tab

2. Bolt

3. Cap

ZMU07152

Components

EMU26341

Tilt support lever for power trim and

tilt model

To keep the outboard motor in the tilted up

position, lock the tilt support lever to the

clamp bracket.

NOTICE

ECM00660

Do not use the tilt support lever or knob

when trailering the boat. The outboard

motor could shake loose from the tilt sup-

port and fall. If the motor cannot be trail-

ered in the normal running position, use

an additional support device to secure it

in the tilt position.

EMU40760

Cowling lock lever

The cowling lock levers are used to secure

the top cowling.

EMU40802

Flushing device

The flushing device is used to clean the cool-

ing water passages of the outboard motor

Bolt tightening torque:

42 Nm (4.28 kgf-m, 31 ft-lb)

1. Tilt support lever

BZMU01863

ZMU07206

1. Cowling lock lever

1. Cowling lock lever(s)

ZMU06909

1ZMU06910

Components

using a garden hose and tap water. For in-

structions on using the flushing device, see

page 71.

EMU40822

Fuel filter

The fuel filter functions to remove foreign

material and separate water from the fuel. If

water separated from the fuel exceeds a

specific volume, the alert system will acti-

vate. For further information, see page 48.

TIP:

Adding an in-line 10-micron fuel filter has

been shown to greatly reduce the chance of

fuel contamination problems. Consult your

dealer for information about Yamaha 10-mi-

cron fuel filters if your boat does not have

one.

1. Flushing device

ZMU07154

1. Fuel filter

ZMU07518

Instruments and indicators

EMU41542

Command Link Plus Display

The Command Link Plus Display (hereinafter

called the Multi-Display) shows engine sta-

tus and alert information. The display of op-

tional items can be changed. This manual

mainly covers the alert display. For informa-

tion on other settings or changing the dis-

play, see the Command Link Plus Display

owner’s manual.

EMU41650

Engine warm-up indicator

This indicator appears while the engine is

being warmed up and goes off when warm-

ing-up is finished.

EMU41660

Engine synchronization indicator

In twin types, this display appears while the

engines are under engine synchronization

control. It goes off when engine synchroniza-

tion control is released.

EMU41680

Overheat alert

If the engine temperature rises too high while

cruising, the pop-up window will appear.

1. Arrow keys

2. Set button

3. Cancel button

4. Menu button

5. Display

1. Shift position display

2. Engine warm-up indicator

3. Engine synchronization indicator

4. Trim meter

5. Optional items

SET

CANCEL

ZMU07233

4321 5

7 689

ZMU07258

6. Engine trouble-alert indicator

7. Low battery voltage-alert indicator

8. Water separator-alert indicator

9. Low oil pressure-alert indicator

10. Overheat-alert indicator

11. Tachometer

ZMU07236

ZMU07237

Instruments and indicators

Press the “ ” (set) button to change to nor-

mal display, and the overheat-alert indicator

will start to blink. The engine speed will auto-

matically decrease to about 2000 r/min.

Stop the engine immediately if the buzzer

sounds and the overheat alert device has ac-

tivated. Check the cooling water inlet for

clogging.

NOTICE

ECM01592

Do not continue to run the engine if the

overheat-alert indicator blinks. Serious

engine damage will occur.

Do not continue to operate the engine if

a alert device has activated. Consult

your Yamaha dealer if the problem can-

not be located and corrected.

EMU41690

Low oil pressure-alert

If the engine oil pressure drops too low, the

pop-up window will appear. Press the “ ”

(set) button to change to normal display, and

the low oil pressure-alert indicator will start to

blink. The engine speed will automatically

decrease to about 2000 r/min.

Stop the engine immediately if the buzzer

sounds and the low oil pressure-alert device

has activated. Check the engine oil quantity

and replenish oil if necessary. If the alert de-

vice has activated while the appropriate en-

gine oil quantity is maintained, consult your

Yamaha dealer.

NOTICE

ECM01601

Do not continue to run the engine if the

low oil pressure alert device has activat-

ed. Serious engine damage will occur.

EMU41700

Water separator alert

The pop-up window will appear if water has

accumulated in the water separator (fuel fil-

ter) while cruising. Press the “ ” (set) but-

ZMU07238

ZMU07239

ZMU07240

ZMU07241

Instruments and indicators

ton to change to normal display, and the

water separator-alert indicator will start to

blink.

Stop the engine immediately and see page

96 of this manual to drain the water from the

fuel filter. Get back to the port soon and con-

sult a Yamaha dealer immediately.

NOTICE

ECM00910

Gasoline mixed with water could cause

damage to the engine.

EMU41720

Low battery voltage-alert

The pop-up window will be displayed if the

battery voltage drops. Press the “ ” (set)

button will change to the normal display and

the battery voltage-alert indicator will start to

blink.

Get back to the port soon if the low battery

voltage-alert device has activated. For

charging the battery, consult your Yamaha

dealer.

EMU41710

Engine trouble alert

The pop-up window will appear if the engine

malfunctions while cruising. Press the “ ”

(set) button to change to normal display, and

the engine trouble-alert indicator will start to

blink.

ZMU07242

ZMU07250

ZMU07251

ZMU07252

ZMU07253

Instruments and indicators

Return to port and consult a Yamaha dealer

immediately.

EMU40792

Command Link Multifunction

Meters

There are 6 types of Command Link meters:

tachometer unit (square and round types),

speedometer unit (square type), speed &

fuel meter unit (square and round types), and

fuel management meter (square type). The

indicator system is slightly different between

the round and square types. Check the mod-

el and type of your unit carefully. This manu-

al describes mainly the alert indicators. For

more details on setting meters or changing

indicator systems, see the operation manual

for the meters.

EMU41164

Command Link Multifunction

Tachometer

The tachometer shows the engine speed

and has functions of trim meter, adjusting

trolling speed, cooling water/engine temper-

ature display, battery voltage display, total

hour/trip hour display, oil pressure display,

water detection alert, engine trouble alert,

and periodic maintenance notification. If the

cooling water pressure sensor is installed,

the unit can also show the cooling water

pressure display. However, even if the cool-

ing water pressure sensor is not installed,

the cooling water pressure display can be

shown by connecting an optional sensor to

the unit. For the optional sensor, consult your

Yamaha dealer. The tachometer unit is avail-

able in round and square types. Check your

tachometer unit type.

ZMU07254

1. Set button

2. Mode button

1. Tachometer

2. Trim meter

3. Multifunction display

4. Cooling water pressure

5. Cooling water/engine temperature

6. Water detection-alert indicator

7. Battery voltage

8. Oil pressure (4-stroke models)

ZMU05415

ZMU05416

Instruments and indicators

EMU36130

Low oil pressure-alert

If the engine oil pressure drops too low, the

low oil pressure-alert indicator will start to

blink, and the engine speed will automatical-

ly decrease to about 2000 r/min.

Stop the engine immediately if the buzzer

sounds and the low oil pressure-alert indica-

tor blinks. Check the engine oil quantity and

replenish oil if necessary. If the alert device

has activated while the appropriate engine

oil quantity is maintained, consult your

Yamaha dealer.

NOTICE

ECM01601

Do not continue to run the engine if the

low oil pressure alert device has activat-

ed. Serious engine damage will occur.

EMU36221

Overheat alert

If the engine temperature rises too high while

cruising, the overheat-alert indicator will start

to blink. The engine speed will automatically

decrease to about 2000 r/min.

1. Set button

2. Mode button

1. Tachometer

2. Trim meter

3. Multifunction display

4. Water detection-alert indicator

5. Engine trouble alert/maintenance indicator

6. Cooling water pressure

7. Oil pressure (4-stroke models)

8. Cooling water/engine temperature

9. Battery voltage

ZMU05417

1 4 5 2

6 87 9

ZMU05418

ZMU05430

ZMU05431

Instruments and indicators

Stop the engine immediately if the buzzer

sounds and the overheat alert device has ac-

tivated. Check the cooling water inlet for

clogging.

NOTICE

ECM01592

Do not continue to run the engine if the

overheat-alert indicator blinks. Serious

engine damage will occur.

Do not continue to operate the engine if

a alert device has activated. Consult

your Yamaha dealer if the problem can-

not be located and corrected.

EMU36150

Water separator alert

This indicator will blink if water has accumu-

lated in the water separator (fuel filter) while

cruising. In such an event, stop the engine

immediately and see page 96 of this manual

to drain the water from the fuel filter. Get

back to the port soon and consult a Yamaha

dealer immediately.

NOTICE

ECM00910

Gasoline mixed with water could cause

damage to the engine.

EMU36160

Engine trouble alert

This indicator will blink if the engine malfunc-

tions while cruising. Get back to the port

soon and consult a Yamaha dealer immedi-

ately.

ZMU05421

ZMU05422

ZMU05423

ZMU05424

ZMU05425

Instruments and indicators

NOTICE

ECM00920

In such an event, the engine will not oper-

ate properly. Consult a Yamaha dealer im-

mediately.

EMU36170

Low battery voltage-alert

If the battery voltage drops, the low battery

voltage-alert indicator and the battery volt-

age value will start to blink. Get back to the

port soon if the low battery voltage-alert de-

vice has activated. For charging the battery,

consult your Yamaha dealer.

EMU41033

Command Link Multifunction

Speed & Fuel Meter

The speed & fuel meter unit shows the boat

speed and has the functions of fuel meter, to-

tal fuel consumption display, fuel economy

display, fuel flow display, and system voltage

display. The chosen display is selected using

the “ ” (set) and “ ” (mode) buttons as

described in this section. If the speed sensor

is installed, the unit can also show the trip

display. However, even if the speed sensor

is not installed, the trip display can be shown

by connecting an optional sensor to the unit.

In addition, if optional sensors are connected

to the unit, water surface temperature dis-

play, depth display, and clock will also be

available. For the optional sensors, consult

your Yamaha dealer.

The speed & fuel meter unit is available in

round and square types. Check your speed

& fuel meter unit type.

After the main switch is first turned to the

“ ” (on) position, all of the displays come on

as a test. After a few seconds, the unit will

change to normal operation.

For more information, see the operation

manual for the meters.

ZMU05426

ZMU05427

ZMU05428

Instruments and indicators

EMU41042

Command Link Multifunction

Speedometer

The speedometer unit shows the boat speed

and has functions of fuel meter and system

voltage display. The chosen display is se-

lected using the “ ” (set) and “ ”

(mode) buttons as described in this section.

In addition, the speedometer can show the

desired unit of measurement such as km/h,

mph, or knots. If the speed sensor is in-

stalled, the unit can also show the trip dis-

play. However, even if the speed sensor is

not installed, the trip display can be shown

by connecting an optional sensor to the unit.

In addition, if optional sensors are connected

to the unit, water surface temperature dis-

play, depth display, and clock will also be

available. For the optional sensors, consult

your Yamaha dealer.

After the main switch is first turned to the

“ ” (on) position, all of the displays come on

as a test. After a few seconds, the unit will

change to normal operation.

For more information, see the operation

manual for the meters.

1. Set button

2. Mode button

1. Speedometer

2. Fuel meter

3. Multifunction display

1. Set button

2. Mode button

ZMU05432

ZMU05433

ZMU05434

1. Speedometer

2. Fuel meter

3. Multifunction display

1 2

ZMU05435

Instruments and indicators

EMU41022

Command Link Multifunction

Fuel Management Meter

The fuel management meter has the func-

tions of fuel flow meter, total consumption

display, fuel economy display, and remaining

fuel display. The chosen display is selected

using the “ ” (set) and “ ” (mode) but-

tons as described in this section.

After the main switch is first turned to the

“ ” (on) position, all of the displays come on

as a test. After a few seconds, the unit will

change to normal operation.

For more information, see the operation

manual for the meters.

EMU41730

Optional meters

Various meters can be installed onto the out-

board motor according to user preference.

For details, consult your Yamaha dealer.

1. Set button

2. Mode button

1. Speedometer

2. Fuel meter

3. Multifunction display

ZMU05436

ZMU05437

1. Set button

2. Mode button

1. Fuel flow meter

2. Multifunction display

ZMU05438

ZMU05439

Instruments and indicators

Analog tachometer

Trim meter

ZMU07245

ZMU04581

Engine control system

EMU26803

Alert system

NOTICE

ECM00091

Do not continue to operate the engine if a

alert device has activated. Consult your

Yamaha dealer if the problem cannot be

located and corrected.

EMU35184

Digital Electronic Control alert

If during operation of the outboard motor any

communication troubles between the digital

electronic control and the outboard motor oc-

cur, the alert indicator will light. Even if there

is no symptom of trouble on shifting or throt-

tle, get back to the port soon and have a

Yamaha dealer inspect or repair the out-

board motor.

EMU41743

Overheat alert

This engine has an overheat-alert device. If

the engine temperature rises too high, the

alert device will activate.

The engine speed will automatically de-

crease to about 2000 r/min.

The overheat-alert indicator of the Com-

mand Link Multifunction Tachometer will

light or blink.

The pop-up window will appear on the

Multi-Display.

1. Digital electronic control-alert indicator

ZMU05889

ZMU05891

ZMU05421

ZMU05422

Engine control system

The buzzer will sound.

If the alert system has activated, stop the en-

gine and check the cooling water inlets:

Check trim angle to be sure that the cool-

ing water inlet is submerged.

Check the cooling water inlet for clogging.

Twin engine drive users:

If the overheat alert system of one engine ac-

tivates, the engine will slow down. To switch

off the alert activation on the engine not af-

fected by overheating, turn off the main

switch of the engine overheating. If the alert

system has activated, stop the engine and tilt

the outboard motor up to check the cooling

water inlet for clogging. If the alert system

has still activated, tilt the overheated out-

board motor up and return to the port.

EMU41753

Low oil pressure alert

If the oil pressure drops too low, the alert de-

vice will activate.

The engine speed will automatically de-

crease to about 2000 r/min.

The low oil pressure-alert indicator of the

Command Link Multifunction Tachometer

will light or blink.

ZMU07238

ZMU07155

ZMU07156

ZMU05826

ZMU05430

Engine control system

The pop-up window will appear on the

Multi-Display.

The buzzer will sound.

If the alert device has activated, stop the en-

gine as soon as it is safe to do so. Check the

oil level and add oil as needed. If the oil level

is correct and the alert device does not

switch off, consult your Yamaha dealer.

Twin engine drive users:

If the low oil pressure alert system of one en-

gine activates, both engines will slow down

and the buzzer will sound. To switch off the

alert activation on the engine not affected by

low oil pressure, turn off the main switch of

the engine with the low oil pressure.

EMU41762

Water separator alert

The outboard motor is equipped with a water

separator alert system. If water separated

from the fuel exceeds a specific volume, the

alert system will activate.

The water separator-alert indicator of the

Command Link Multifunction Tachometer

will come on or blink.

ZMU05431

ZMU07240

ZMU07155

ZMU07156

ZMU05423

Engine control system

The pop-up window will appear on the

Multi-Display.

The buzzer will sound intermittently when

the control lever is in the neutral position.

If the alert system has activated, stop the en-

gine immediately and see page 96 of this

manual to drain the water from the fuel filter.

Get back to the port soon and consult a

Yamaha dealer immediately.

NOTICE

ECM02470

Although the buzzer will stop when the

engine is started and the control lever is

moved to the forward or reverse position,

do not use the outboard motor. Other-

wise, serious engine damage could oc-

cur.

ZMU05424

ZMU07242

Installation

EMU26902

Installation

The information presented in this section is

intended as reference only. It is not possible

to provide complete instructions for every

possible boat and motor combination. Proper

mounting depends in part on experience and

the specific boat and motor combination.

WARNING

EWM01590

Overpowering a boat could cause se-

vere instability. Do not install an out-

board motor with more horsepower

than the maximum rating on the capac-

ity plate of the boat. If the boat does not

have a capacity plate, consult the boat

manufacturer.

Improper mounting of the outboard mo-

tor could result in hazardous condi-

tions such as poor handling, loss of

control, or fire hazards. For permanent-

ly mounted models, your dealer or oth-

er person experienced in proper rigging

should mount the motor.

EMU33481

Mounting the outboard motor

The outboard motor should be mounted so

that the boat is well balanced. Otherwise, the

boat could be hard to steer. For single-en-

gine boats, mount the outboard motor on the

centerline (keel line) of the boat. For twin en-

gine boats, mount the outboard motors equi-

distant from the centerline. Consult your

Yamaha dealer or boat manufacturer for fur-

ther information on determining the proper

mounting location.

EMU26934

Mounting height (boat bottom)

The mounting height of your outboard motor

affects its efficiency and reliability. If it is

mounted too high, propeller ventilation may

occur, which will reduce propulsion due to

excessive propeller slip, and the water in-

takes for the cooling system may not get ad-

equate water supply, which can cause

engine overheating. If the engine is mounted

too low, water resistance (drag) will increase,

thereby reducing engine efficiency and per-

formance.

Most commonly, outboard motor should be

mounted so that the anti-cavitation plate is in

alignment with the bottom of the boat. The

optimum mounting height of the outboard

1. Center line (keel line)

ZMU01760

Installation

motor is affected by the boat/motor combina-

tion and the desired use. Test runs at differ-

ent heights can help determine the optimum

mounting height. Consult your Yamaha deal-

er or boat manufacturer for further informa-

tion on determining the proper mounting

height.

NOTICE

ECM01634

Make sure that the idle hole is high

enough to prevent water from entering

the engine even if the boat is stationary

with the maximum load.

Incorrect engine height or obstructions

to the smooth flow of water (such as the

design or condition of the boat, or ac-

cessories, such as transom ladders or

depth finder transducers) can create

airborne water spray while the boat is

cruising. If the outboard motor is oper-

ated continuously in the presence of

airborne water spray, enough water

could enter the engine through the air

intake opening in the top cowling to

cause severe engine damage. Remove

the cause of the airborne water spray.

ZMU01762

Operation

EMU36381

First-time operation

EMU40510

Filling engine oil

The outboard motor is shipped from the fac-

tory without engine oil. If your Yamaha deal-

er did not fill the engine with engine oil, you

must fill the engine before starting it.

NOTICE: Make sure that the engine is

filled with engine oil before operating the

outboard motor for the first time. Other-

wise, the engine could be damaged se-

verely. [ECM02240]

The following sticker, which is affixed to the

outboard motor when it is shipped from the

factory, should be removed after the engine

is filled with engine oil for the first time. For

more information on checking the engine oil

level, see page 54.

EMU30174

Breaking in engine

Your new engine requires a period of break-

in to allow mating surfaces of moving parts to

wear in evenly. Correct break-in will help en-

sure proper performance and longer engine

life. NOTICE: Failure to follow the break-in

procedure could result in reduced engine

life or even severe engine damage. [ECM00801]

EMU41222

Procedure for breaking in engine

Your new engine requires a period of 10

hours break-in so that mating surfaces of

moving parts wear in evenly.

Operate the engine in the water under load

(in gear with a propeller installed) for 10

hours as follows. When breaking in the en-

gine, avoid extended idling, rough water, and

crowded areas.

1. For the 1st hour of operation:

Operate the engine at varying speeds up

to 2000 r/min or approximately 1/2 throt-

tle.

2. For the 2nd hour of operation:

Increase the engine speed until the boat

is on plane (but avoid full-throttle opera-

tion), and then back off on the throttle

while keeping the boat at a planing

speed.

3. For the remaining 8 hours of operation:

Operate the engine at any speed. How-

ever, avoid operating at full throttle for

more than 5 minutes at a time.

4. After the 1st 10 hours of operation:

Operate the engine normally.

EMU36400

Getting to know your boat

Different boats handle differently. Operate

cautiously while you learn how your boat

handles under different conditions and with

different trim angles (see page 64).

EMU36413

Checks before starting engine

WARNING

EWM01921

If any item in “Checks before starting en-

gine” is not working properly, have it in-

spected and repaired before operating

the outboard motor. Otherwise, an acci-

dent could occur.

NOTICE

ECM00120

Do not start the engine out of water. Over-

heating and serious engine damage can

ZMU01710

Operation

occur.

EMU36421

Fuel level

Be sure you have plenty of fuel for your trip.

A good rule is to use 1/3 of your fuel to get to

the destination, 1/3 to return, and to keep 1/3

as an emergency reserve. With the boat lev-

el on a trailer or in the water, turn the key to

“ ” (on) and check the fuel level. For fuel

filling instructions, see page 58.

EMU40770

Removing top cowling

For the following checks, remove the top

cowling from the bottom cowling.

To remove the top cowling, pull the cowling

lock levers and lift up the top cowling.

EMU36442

Fuel system

WARNING

EWM00060

Gasoline and its vapors are highly flam-

mable and explosive. Keep away from

sparks, cigarettes, flames, or other sourc-

es of ignition.

WARNING

EWM00910

Leaking fuel can result in fire or explo-

sion.

Check for fuel leakage regularly.

If any fuel leakage is found, the fuel

system must be repaired by a qualified

mechanic. Improper repairs can make

the outboard unsafe to operate.

EMU36451

Check for fuel leaks

Check for fuel leaks or gasoline fumes in

the boat.

Check for fuel leakage from the fuel sys-

tem.

Check the fuel tank and fuel lines for

cracks, swellings, or other damages.

EMU37322

Checking the fuel filter

Check that the fuel filter is clean and free of

water. If any water is found in the fuel, or if a

significant amount of debris is found, the fuel

tank should be checked and cleaned by a

Yamaha dealer.

1. Cowling lock lever

2. Bottom cowling

3. Top cowling

1. Cowling lock lever(s)

ZMU06914

ZMU06915

2. Bottom cowling

3. Top cowling

Operation

EMU41770

Controls

Turn the main switch “ ” (on) and make

sure that the Digital electronic control-ac-

tive indicator comes on.

Turn the steering wheel full-right and full-

left. Make sure operation is smooth and

unrestricted throughout the whole range

with no binding or excessive free play.

Operate the throttle levers several times to

make sure there is no hesitation in their

travel. Operation should be smooth over

the complete range of motion, and each le-

ver should return completely to the idle po-

sition.

EMU40362

Engine shut-off cord (lanyard)

Check the engine shut-off cord and clip for

damage, such as cuts, breaks, and wear.

EMU40993

Engine oil

1. Place the outboard motor in a vertical

position (not tilted). NOTICE: If the out-

board motor is not level, the oil level

indicated on the oil dipstick may not

be accurate. [ECM01861]

2. Remove the oil dipstick and wipe it

clean.

3. Insert the oil dipstick completely and re-

move it again.

4. Check that the oil level on the oil dipstick

is between the upper and lower marks.

Consult your Yamaha dealer if the oil

level is not at the proper level or if it ap-

pears milky or dirty.

1. Fuel filter

ZMU07518

1. Clip

2. Engine shut-off cord (lanyard)

1. Oil dipstick

ZMU06873

ZMU07157

Operation

EMU40411

Outboard motor

Check that the outboard motor is mounted

properly and check the outboard motor

mounting bolts for looseness.

Check the propeller for damage.

Check for engine oil leaks.

EMU40371

Flushing device

Check that the flushing device is securely

tightened on to the fitting on the bottom cowl-

ing. NOTICE: Make sure to connect the

garden hose connector to the fitting on

the bottom cowling and tighten it secure-

ly. Otherwise, cooling water will leak out

during operation, causing the engine to

overheat. [ECM02291]

EMU40751

Installing top cowling

1. Check the rubber seal for damage. If the

rubber seal is damaged, have it replaced

by a Yamaha dealer.

1. Oil dipstick

2. Upper mark

3. Lower mark

ZMU06918

1. Flushing device

2. Garden hose connector

3. Fitting

1. Rubber seal

2. Bottom cowling

23 1

ZMU07158

ZMU07159

Operation

2. Check that the rubber seal is seated all

the way around the bottom cowling.

3. Check that all of the cowling lock levers

are pulled outward.

4. Align the 3 protrusions on the top cowl-

ing with the corresponding holders on

the bottom cowling, and then place the

top cowling on the bottom cowling.

5. Push the cowling lock levers inward to

secure the top cowling.

6. Check the fitting of the top cowling by

pushing it with both hands. NOTICE: If

the top cowling is not installed cor-

rectly, water can enter the top cowl-

ing and damage the engine, or the top

cowling can blow off at high speeds.

[ECM02370]

1. Top cowling

2. Protrusion

3. Holder

4. Bottom cowling

1. Top cowling

2. Protrusion

3. Holder

4. Bottom cowling

ZMU07015

32 3

ZMU07016

1. Cowling lock lever

1. Cowling lock lever(s)

ZMU06920

1ZMU06921

ZMU07160

Operation

EMU35243

Checking power trim and tilt system

WARNING

EWM01930

Never get under the lower unit while it

is tilted, even when the tilt support lever

is locked. Severe injury could occur if

the outboard motor accidentally falls.

Body parts can be crushed between the

motor and the clamp bracket when the

motor is trimmed or tilted.

Be sure no one is near the outboard

motor before performing this check.

1. Check the power trim and tilt unit for any

sign of oil leaks.

2. Operate each of the power trim and tilt

switches on the digital electronic control

and engine bottom cowling (if equipped)

to check that all switches work.

3. Tilt the outboard motor up and check

that the tilt rod and trim rods are extend-

ed completely.

4. Use the tilt support lever to lock the mo-

tor in the up position. Operate the tilt

down switch briefly so the motor is sup-

ported by the tilt support lever.

5. Check that the tilt rod and trim rods are

free of corrosion or other flaws.

6. Activate the tilt-down switch until the trim

rods have retracted completely into the

cylinders.

7. Activate the trim-up switch until the tilt

rod is fully extended. Unlock the tilt sup-

port lever.

8. Tilt the outboard motor down. Check that

the tilt rod and trim rods operate smooth-

ly.

EMU36582

Battery

Check that the battery is in good condition,

and fully charged. Check that the battery

connections are clean, secure and covered

by insulating covers. The electrical contacts

of the battery and cables must be clean and

properly connected or the battery will not

1. Tilt rod

2. Trim rods

ZMU07162

1. Tilt support lever

ZMU07163

ZMU07164

Operation

start the engine.

Refer to the battery manufacturer’s instruc-

tions for checks for your particular battery.

EMU30026

Filling fuel

WARNING

EWM01830

Gasoline and its vapors are highly flam-

mable and explosive. Always refuel ac-

cording to this procedure to reduce the

risk of fire and explosion.

Gasoline is poisonous and can cause

injury or death. Handle gasoline with

care. Never siphon gasoline by mouth.

If you should swallow some gasoline or

inhale a lot of gasoline vapor, or get

some gasoline in your eyes, see your

doctor immediately. If gasoline spills

on your skin, wash with soap and wa-

ter. If gasoline spills on your clothing,

change your clothes.

1. Make sure that the engine is stopped.

2. Make sure that the boat is in a well-ven-

tilated outdoor area, either securely

moored or trailered.

3. Make sure that no one is in the boat.

4. Do not smoke and keep away from

sparks, flames, static electric discharge,

or other sources of ignition.

5. If you use a portable container to store

and dispense fuel, only use a locally ap-

proved GASOLINE container.

6. Touch the fuel nozzle to the filler open-

ing or funnel to help prevent electrostatic

sparks.

7. Fill the fuel tank, but do not overfill.

WARNING! Do not overfill. Otherwise

fuel can expand and overflow if the

temperature increases. [EWM02610]

8. Tighten the fuel tank cap securely.

9. Wipe up any spilled gasoline immediate-

ly with dry rags. Dispose of rags properly

according to local laws or regulations.

EMU40251

Operating engine

WARNING

EWM02600

This product emits exhaust gases which

contain carbon monoxide, a colorless,

odorless gas which could cause brain

damage or death when inhaled. Symp-

toms include nausea, dizziness, and

drowsiness. Keep cockpit and cabin ar-

eas well ventilated. Avoid blocking ex-

haust outlets.

EMU41290

Sending fuel

1. If your boat is equipped with a fuel tank

selector valve, turn the valve to select

the appropriate fuel tank.

2. Squeeze the primer pump, with the ar-

row pointing up, until you feel it become

firm.

EMU27494

Starting engine

WARNING

EWM01600

Before starting the engine, make sure

that the boat is tightly moored and that

you can steer clear of any obstructions.

1. Arrow

Operation

Be sure there are no swimmers in the wa-

ter near you.

EMU41790

Start-up checks

Place the control lever in neutral and turn the

main switch to “ ” (on). Make sure that no

alert-indicator comes on. If the buzzer

sounds and the water separator-alert indica-

tor blinks, consult your Yamaha dealer im-

mediately.

EMU41901

Procedure for starting engine

WARNING

EWM01840

Failure to attached engine shut-off cord

could result in a runaway boat if opera-

tor is ejected. Attach the engine shut-

off cord to a secure place on your cloth-

ing, or your arm or leg while operating.

Do not attach the cord to clothing that

could tear loose. Do not route the cord

where it could become entangled, pre-

venting it from functioning.

Avoid accidentally pulling the cord dur-

ing normal operation. Loss of engine

power means the loss of most steering

control. Also, without engine power,

the boat could slow rapidly. This could

cause people and objects in the boat to

be thrown forward.

1. Place the control lever in neutral.

TIP:

The start-in-gear protection device prevents

the engine from starting except when in neu-

tral.

2. Attach the engine shut-off cord to a se-

cure place on your clothing, or your arm

or leg. Then install the clip on the other

end of the cord into the engine shut-off

switch.

3. Turn the main switch to “ ” (on) to

make sure that the digital electronic con-

trol-active indicator lights. The engine

can not be started when the digital elec-

tronic control-alert indicator lights.

4. Turn the main switch to “ ” (start),

and hold it for a maximum of 5 seconds.

NOTICE: Never turn the main switch

to “ ” (start) while the engine is

running. Do not keep the starter mo-

tor turning for more than 5 seconds. If

the starter motor is turned continu-

ZMU05829

ZMU07167

OFF

ZMU07217

Operation

ously for more than 5 seconds, the

battery will be quickly discharged,

thus making it impossible to start the

engine. The starter can also be dam-

aged. If the engine will not start after

5 seconds of cranking, return the

main switch to “ ” (on), wait 10 sec-

onds, then crank the engine again.

[ECM00192]

When starting the engine using the

Start/Stop button, press the button to

start the engine. The indicator for the

starting engine will come on.

When starting the engine using the

Start/Stop button on the All Start/Stop

switch panel, press the button to start

the all engines.

TIP:

When the main switch is turned to “ ”

(start) with the clip removed from the en-

gine shut-off switch, the buzzer will sound.

For twin type, if the clip is removed from

the engine shut-off switch, the buzzer will

sound when the Start/Stop button is

pressed.

For twin type, when either engine has

started, the engine that has started can be

stopped by pressing the Start/Stop button

on the All Start/Stop switch panel.

EMU36510

Checks after starting engine

EMU41360

Cooling water

Check for a steady flow of water from the

cooling water pilot hole. A continuous flow of

water from the cooling water pilot hole shows

that the water pump is pumping water

through the cooling water passages.

TIP:

When the engine is started, there may be a

slight delay before water flows from the cool-

ing water pilot hole.

NOTICE

ECM02250

If water is not flowing out of the cooling

water pilot hole at all times while the en-

gine is running, overheating and serious

damage could occur. Stop the engine and

ON START

ZMU07169

ZMU07148

ZMU07150

Operation

To shift from in gear (forward/reverse) to

neutral

1. Close the throttle so that the engine

slows to idle speed.

2. After the engine is at idle speed in gear

move the control lever firmly and crisply

into the neutral position.

EMU31742

Stopping boat

WARNING

EWM01510

Do not use the reverse function to slow

down or stop the boat as it could cause

you to lose control, be ejected, or im-

pact the steering wheel or other parts of

the boat. This could increase the risk of

serious injury. It could also damage the

shift mechanism.

Do not shift into reverse while traveling

at planing speeds. Loss of control, boat

swamping, or damage to the boat could

occur.

The boat is not equipped with a separate

braking system. Water resistance stops it af-

ter the throttle lever is moved back to idle.

The stopping distance varies depending on

gross weight, water surface conditions, and

wind direction.

EMU30880

Trolling

EMU41831

Adjusting trolling speed

When the control lever is either in the for-

ward position or in the reverse position and

the throttle is in the fully closed position, you

can randomly adjust the trolling speed be-

tween 600 r/min and 1000 r/min by increas-

ing or decreasing it approximately by 50

r/min. The display will show the engine

speed when the engine speed is increased

from the fully closed position during trolling

speed setting mode. When the throttle is re-

turned to the fully closed position, the display

will show the trolling speed again. When the

engine is turned off or when the engine

speed exceeds 3000 r/min, trolling speed

setting mode will be released.

For details, see the attached operation man-

ual.

ZMU05832

ZMU05829

ZMU05931

Operation

TIP:

Trolling is affected by currents and other

operating conditions and may differ from

the actual engine speed.

When warming up a cold engine, the troll-

ing speed cannot be decreased below the

specified engine idle speed.

EMU27821

Stopping engine

Before stopping the engine, first let it cool off

for a few minutes at idle or low speed. Stop-

ping the engine immediately after operating

at high speed is not recommended.

EMU41911

Procedure for stopping engine

1. The engine can be turned off either by

pressing the Start/Stop button or by turn-

ing the main switch to the “ ” (off) po-

sition. After the engine has been turned

off using the Start/Stop button, turn the

main switch to the “ ” (off) position.

TIP:

The engine can also be stopped by pulling

the cord and removing the clip from the en-

gine shut-off switch, then turning the main

switch to “ ” (off).

2. Remove the key if the boat will be left un-

attended.

ZMU06309

SET

CANCEL

ZMU07256

OFF

ZMU07171

ZMU07148

ZMU07150

Operation

EMU27862

Trimming outboard motor

WARNING

EWM00740

Excessive trim for the operating condi-

tions (either trim up or trim down) can

cause boat instability and can make

steering the boat more difficult. This in-

creases the possibility of an accident. If

the boat begins to feel unstable or is hard

to steer, slow down and/or readjust the

trim angle.

The trim angle of the outboard motor helps

determine the position of the bow of the boat

in the water. Correct trim angle will help im-

prove performance and fuel economy while

reducing strain on the engine. Correct trim

angle depends upon the combination of

boat, engine, and propeller. Correct trim is

also affected by variables such as the load in

the boat, sea conditions, and running speed.

EMU27888

Adjusting trim angle (Power trim and

tilt)

WARNING

EWM00753

Be sure all people are clear of the out-

board motor when adjusting the trim

angle. Body parts can be crushed be-

tween the motor and the clamp bracket

when the motor is trimmed or tilted.

Use caution when trying a trim position

for the first time. Increase speed gradu-

ally and watch for any signs of instabil-

ity or control problems. Improper trim

angle can cause loss of control.

If equipped with a power trim and tilt

switch located on the bottom cowling,

use the switch only when the boat is at

a complete stop with the engine off. Do

not adjust the trim angle with this

switch while the boat is moving.

Adjust the outboard motor trim angle using

the power trim and tilt switch.

1. Trim operating angle

ZMU05834

ZMU05835

Operation

To raise the bow (trim-out), press the switch

“ ” (up).

To lower the bow (trim-in), press the switch

“ ” (down).

Make test runs with the trim set to different

angles to find the position that works best for

your boat and operating conditions.

EMU27912

Adjusting boat trim

When the boat is on plane, a bow-up attitude

results in less drag, greater stability and effi-

ciency. This is generally when the keel line of

the boat is up about 3 to 5 degrees. With the

bow up, the boat may have a greater tenden-

cy to steer to one side or the other. Compen-

sate for this as you steer. When the bow of

the boat is down, it is easier to accelerate

from a standing start onto plane.

Bow Up

Too much trim-out puts the bow of the boat

too high in the water. Performance and econ-

omy are decreased because the hull of the

boat is pushing the water and there is more

air drag. Excessive trim-out can also cause

the propeller to ventilate, which reduces per-

formance further, and the boat may “por-

poise” (hop in the water), which could throw

the operator and passengers overboard.

Bow Down

Too much trim-in causes the boat to “plow”

through the water, decreasing fuel economy

and making it hard to increase speed. Oper-

ating with excessive trim-in at higher speeds

also makes the boat unstable. Resistance at

the bow is greatly increased, heightening the

danger of “bow steering” and making opera-

tion difficult and dangerous.

TIP:

Depending on the type of boat, the outboard

1. Power trim and tilt switch

ZMU07151

Operation

motor trim angle may have little effect on the

trim of the boat when operating.

EMU27946

Tilting up and down

If the engine will be stopped for some time or

if the boat is moored in shallows, the out-

board motor should be tilted up to protect the

propeller and lower case from damage by

collision with obstructions, and also to re-

duce salt corrosion.

WARNING

EWM01543

Make sure that all people are clear of the

outboard motor when tilting the outboard

motor up and down. Body parts can be

crushed between the outboard motor and

the clamp bracket when the outboard mo-

tor is trimmed or tilted.

NOTICE

ECM00991

Before tilting the outboard motor, fol-

low the procedure under “Stopping en-

gine” in this chapter. Never tilt the

outboard motor while the engine is run-

ning. Severe damage from overheating

can result.

To prevent the cooling water passages

from becoming frozen when the ambi-

ent temperature is 5C or below, tilt the

outboard motor up after it has been

stopped 30 seconds or more.

EMU35509

Procedure for tilting up (power trim

and tilt models)

1. Place the control lever in neutral.

2. Press the power trim and tilt switch “ ”

(up) until the outboard motor has tilted

up completely.

ZMU05829

ZMU05837

ZMU05838

Operation

3. Set the tilt support lever to support the

engine. WARNING! After tilting the

outboard motor, be sure to support it

with the tilt support knob or tilt sup-

port lever. Otherwise the outboard

motor could fall back down suddenly

if oil in the power trim and tilt unit or

in the power tilt unit loses pressure.

[EWM00262] NOTICE: Do not use the tilt

support lever or knob when trailering

the boat. The outboard motor could

shake loose from the tilt support and

fall. If the motor cannot be trailered in

the normal running position, use an

additional support device to secure it

in the tilt position. For more detailed

information, see page 70. [ECM01641]

4. Once the outboard motor is supported

with the tilt support lever, press the pow-

er trim and tilt switch “ ” (down) to re-

tract the trim rods. NOTICE: Make sure

that the trim rods retracts completely

during mooring. This protects the

rods from marine growth and corro-

sion, which could damage the power

trim and tilt mechanism. [ECM00252]

EMU35516

Procedure for tilting down (power

trim and tilt models)

1. Push the power trim and tilt switch “ ”

(up) until the outboard motor is support-

ed by the tilt rod and the tilt support lever

becomes free.

2. Release the tilt support lever.

ZMU07177

ZMU07153

Operation

3. Push the power trim and tilt switch “ ”

(down) to lower the outboard motor to

the desired position.

EMU28062

Shallow water

EMU40701

Cruising in shallow water

The outboard motor can be tilted up partially

to allow operation in shallow water.

NOTICE

ECM02360

Do not tilt the outboard motor up so that

the cooling water inlet on the lower unit is

above the surface of the water when set-

ting up for and cruising in shallow water.

Otherwise severe damage from overheat-

ing can result.

EMU35236

Procedure for power trim and tilt models

1. Place the control lever in neutral.

ZMU07178

ZMU05840

ZMU05841

1. Cooling water inlet

ZMU07179

ZMU07208

Operation

2. Slightly tilt the outboard motor up to the

desired position using the power trim

and tilt switch. WARNING! Using the

power trim and tilt switch on the bot-

tom cowling while the boat is moving

or engine is on could increase the

risk of falling overboard and could

distract the operator, increasing the

risk of collision with another boat or

an obstacle. [EWM01850]

3. To return the outboard motor to the nor-

mal running position, press the power

trim and tilt switch and slowly tilt the out-

board motor down.

EMU41370

Operating in other conditions

Operating in salt water

After operating in saltwater, brackish water,

or water high in other minerals, flush the

cooling system with fresh water to minimize

corrosion and clogging of the cooling water

passages with deposits. Also, rinse the exte-

rior of the outboard motor with fresh water.

Operating in water containing mud, sand,

silt, debris, or vegetation

Mud, sand, silt, debris, and vegetation in the

water may restrict water flow into the cooling

water inlet covers or clog internal water pas-

sages. Check and clean the cooling water in-

let covers frequently when operating in these

conditions. Flush the engine with clean, fresh

water after use in these environments. Con-

sult your dealer if normal water flow can not

be restored by cleaning the cooling water in-

let covers or flushing with fresh water.

ZMU05829

ZMU05837

ZMU05838

ZMU07177

Maintenance

EMU41531

Transporting and storing

outboard motor

WARNING

EWM02640

USE CARE when transporting fuel tank,

whether in a boat or car.

DO NOT fill fuel container to maximum

capacity. Gasoline will expand consid-

erably as it warms up and can build up

pressure in the fuel container. This can

cause fuel leakage and a potential fire

hazard.

Leaking fuel is a fire hazard. Tighten se-

curely the fuel valve when transporting

and storing the outboard motor.

Never get under the outboard motor

while it is tilted. Severe injury could oc-

cur if the outboard motor accidentally

falls.

Do not use the tilt support lever or knob

when trailering the boat. The outboard

motor could shake loose from the tilt

support and fall. If the outboard motor

cannot be trailered in the normal run-

ning position, use an additional sup-

port device to secure it in the tilt

position.

Leaking fuel is a fire hazard. When trailering

the boat, close the fuel valve to prevent fuel

from leaking.

The outboard motor should be transported

and stored in the normal running position. If

there is insufficient road clearance in this po-

sition, then trailer the outboard motor in the

tilt position using a motor support device

such as a transom saver bar. Consult your

Yamaha dealer for further details.

When the outboard motor is tilted prolonged

time for mooring or trailering the boat, close

the fuel valve.

EMU35411

Storing outboard motor

When storing your Yamaha outboard motor

for prolonged periods of time (2 months or

longer), several important procedures must

be performed to prevent excessive damage.

It is advisable to have your outboard motor

serviced by an authorized Yamaha dealer

prior to storage. However, you, the owner,

with a minimum of tools, can perform the fol-

lowing procedures.

NOTICE

ECM01720

Store the outboard motor in a dry, well-

ventilated place, not in direct sunlight.

Keep the outboard motor in the attitude

shown when transporting and storing it.

EMU41380

Conditioning and stabilizing gasoline

When preparing to store a boat for extended

periods (2 months or longer) it is best to com-

pletely remove all gasoline from the boat’s

fuel tank(s). If it is not possible to remove the

gasoline, add one ounce of “Yamalube Fuel

Stabilizer & Conditioner Plus” to each gallon

of gasoline in a full tank of gasoline to pro-

vide fuel stability and corrosion protection.

TIP:

Do not fill the fuel tank(s) to the point of over-

flowing. Approximately 7/8 full will allow

enough space in the fuel tank to prevent gas-

ZMU05843

Maintenance

oline purging from the fuel tank vent due to

expansion with temperature changes.

Do not cap the fuel tank vent. Excessive

pressure could damage the boat and motor’s

fuel systems.

A partially filled fuel tank, less than 7/8 full

but not completely empty, is not recommend-

ed. Air space above the gasoline allows air

movement which can bring in water through

condensation as the air temperature chang-

es.

Condensation inside the fuel tank can cause

corrosion problems and phase separation of

gasoline containing ethanol.

Consult your Yamaha dealer concerning pre-

ventative measures that may work best for

the gasoline and environmental conditions in

your area.

EMU28305

Procedure

EMU41141

Cleaning the outboard motor

When cleaning the outboard motor, the top

cowling must be installed.

1. Wash the exterior of the outboard motor

using fresh water. NOTICE: Do not

spray water into the air intake. [ECM01840]

2. Drain the cooling water completely out of

the outboard motor. Clean the body thor-

oughly.

EMU41071

Lubrication

1. Change the gear oil. For instructions,

see page 88. Check the gear oil for the

presence of water that indicates a leaky

seal. Seal replacement should be per-

formed by an authorized Yamaha dealer

prior to use.

2. Lubricate all grease fittings. For further

details, see page 77.

TIP:

For long-term storage, fogging the engine

with fogging oil is recommended. Contact

your Yamaha dealer for information about

fogging oil and procedures for your outboard

motor.

EMU41152

Cleaning and anticorrosion

measures

1. Wash the exterior of the outboard motor

using fresh water, and then dry the out-

board motor completely. For instructions

on cleaning the outboard motor, see

page 71. NOTICE: Do not spray water

into the air intake. [ECM01840]

2. Spray the outboard motor powerhead

with “Yamaha Silicone Protectant.”

3. Wax the cowling with a non-abrasive

wax such as “Yamaha Silicone Wax.”

EMU40962

Flushing cooling water passage

Perform this procedure right after operation

for the most thorough flushing.

NOTICE

ECM01530

Do not perform this procedure while the

engine is running. The water pump may

be damaged and severe damage from

overheating can result.

1. Disconnect the garden hose connector

from the fitting on the bottom cowling.

1. Air intake

ZMU07209

Maintenance

2. Connect the garden hose to the garden

hose connector.

3. With the engine off, turn on the water

supply and let the water flush through

the cooling water passages for about 15

minutes.

4. Turn off the water supply, and then dis-

connect the garden hose from the gar-

den hose connector.

5. Connect the garden hose connector to

the fitting on the bottom cowling and

tighten it securely. NOTICE: If the gar-

den hose connector is not properly

connected, cooling water can leak

out and the engine can overheat dur-

ing operation. [ECM01801]

TIP:

When flushing the cooling water passages

with the boat in the water, tilting the outboard

motor up until it is completely out of the water

will achieve better results.

EMU28461

Checking painted surface of

outboard motor

Check the outboard motor for scratches,

nicks, or flaking paint. Areas with damaged

paint are more likely to corrode. If necessary,

clean and paint the areas. A touch-up paint is

available from your Yamaha dealer.

EMU2848B

Periodic maintenance

WARNING

EWM01871

These procedures require mechanical

skills, tools, and supplies. If you do not

have the proper skills, tools, or supplies

to perform a maintenance procedure,

have a Yamaha dealer or other qualified

mechanic do the work.

The procedures involve disassembling

the motor and exposing dangerous parts.

To reduce the risk of injury from moving,

hot, or electrical parts:

Turn off the engine and keep the key(s)

and engine shut-off cord (lanyard) with

you when you perform maintenance un-

less otherwise specified.

1. Garden hose connector

2. Fitting

1. Garden hose connector

2. Garden hose

2 1

ZMU07180

ZMU06945

Maintenance

The power trim and tilt switches oper-

ate even when the ignition key is off.

Keep people away from the switches

whenever working around the motor.

When the motor is tilted, keep away

from the area under it or between it and

the clamp bracket. Be sure no one is in

this area before operating the power

trim and tilt mechanism.

Allow the engine to cool before han-

dling hot parts or fluids.

Always completely reassemble the mo-

tor before operation.

Maintenance, replacement, or repair of

the emission control devices and sys-

tems may be performed by any marine

engine repair establishment or individual.

All warranty repairs, however, including

those to the emission control system,

must be performed by an authorized

Yamaha marine dealership.

A service manual is available for purchase

through your Yamaha dealer for owners who

have the mechanical skills, tools, and other

equipment necessary to perform mainte-

nance not covered by this owner’s manual.

EMU28511

Replacement parts

If replacement parts are necessary, use only

genuine Yamaha parts or parts of equivalent

design and quality. Any part of inferior quality

may malfunction, and the resulting loss of

control could endanger the operator and

passengers. Yamaha genuine parts and ac-

cessories are available from your Yamaha

dealer.

EMU35521

Maintenance interval guidelines

The service intervals provided in the Mainte-

nance Chart were developed based upon

“typical” use that includes operating at varied

speeds, with sufficient time for engine warm

up and cool-down, a medium to light load,

and an average cruising speed near the

3000 to 4000 rpm range. As with any engine,

however, if your normal operating conditions

are different, you should consider service

more often than shown, especially how often

you change your engine oil and gear oil. Ex-

amples might include extended wide-open-

throttle use or long periods of trolling or

idling, carrying heavy loads, or frequent

starting and stopping or shifting. More fre-

quent maintenance will often pay off many

times over in increased engine life and great-

er owner satisfaction. Consult your Yamaha

dealer for additional maintenance recom-

mendations.

Maintenance

EMU34446

Maintenance chart 1

TIP:

Refer to the sections in this chapter for explanations of each owner-specific action.

The maintenance cycle on these charts assume usage of 100 hours per year and regular

flushing of the cooling water passages. Maintenance frequency should be adjusted when

operating the engine under adverse conditions such as extended trolling.

Disassembly or repairs may be necessary depending on the outcome of maintenance

checks.

Expendable or consumable parts and lubricants will lose their effectiveness over time and

through normal usage regardless of the warranty period.

When operating in salt water, muddy, other turbid (cloudy), acidic water, the engine should

be flushed with clean water after each use.

The “ ” symbol indicates the check-ups which you may carry out yourself.

The “ ” symbol indicates work to be carried out by your Yamaha dealer.

Item Actions

Initial Every

20 hours

(3 months)

100

hours

(1 year)

300

hours

(3 years)

500

hours

(5 years)

Anode(s) (external) Inspection or replace-

ment as necessary

Anode (cylinder head

exhaust passage)

Inspection or replace-

ment as necessary

Anodes (cylinder head,

cylinder block, cylinder

block thermostat por-

tion, oil cooler cover,

exhaust guide)

Replacement

Battery (electrolyte

level, terminal) Inspection

Battery (electrolyte

level, terminal)

Fill, charging or replac-

ing as necessary

Cooling water leakage Inspection or replace-

ment as necessary

Cowling lock lever Inspection

Engine starting condi-

tion/noise Inspection

Engine idle

speed/noise Inspection

Engine oil Replacement

Engine oil filter (car-

tridge) Replacement

Maintenance

Fuel filter/water sepa-

rator (can be disas-

sembled)

Inspection or replace-

ment as necessary

Fuel line (High pres-

sure)

Inspection or replace-

ment as necessary

Fuel line (Low pres-

sure)

Inspection or replace-

ment as necessary

Fuel pump Inspection or replace-

ment as necessary

Fuel/engine oil leakage Inspection

Gear oil Replacement

Greasing points Greasing

Impeller/water pump

housing

Inspection or replace-

ment as necessary

Impeller/water pump

housing Replacement

OCV (Oil Control

Valve) filter Replacement

Power trim and tilt unit Inspection

Propeller/propeller

nut/cotter pin

Inspection or replace-

ment as necessary

Spark plug(s) Inspection or replace-

ment as necessary

Ignition coils/ignition

coil leads

Inspection or replace-

ment as necessary

Water from the cooling

water pilot hole Inspection

Thermostat Inspection or replace-

ment as necessary

Timing belt Inspection or replace-

ment as necessary

Valve clearance Inspection and adjust-

ment

Cooling water inlet Inspection

Main switch/stop switch Inspection or replace-

ment as necessary

Wire harness connec-

tions/wire coupler con-

nections

Inspection or replace-

ment as necessary

Item Actions

Initial Every

20 hours

(3 months)

100

hours

(1 year)

300

hours

(3 years)

500

hours

(5 years)

Maintenance

EMU34451

Maintenance chart 2

Connector connec-

tions/lead connections

Inspection or replace-

ment as necessary

(Yamaha) Meter/gauge Inspection

Item Actions

Every

1000 hours

Exhaust guide/exhaust

manifold

Inspection or replace-

ment as necessary

Timing belt Replacement

Item Actions

Initial Every

20 hours

(3 months)

100

hours

(1 year)

300

hours

(3 years)

500

hours

(5 years)

Maintenance

EMU41300

Greasing

Yamalube Marine Grease

F225, LF225, F250, LF250, F300, LF300, F250D1, FL250D1, F300B1, FL300B1

EMU40663

Inspecting spark plug

The spark plug is an important engine com-

ponent. The condition of the spark plug can

indicate something about the condition of the

engine. For example, if the center electrode

ZMU07181

Maintenance

porcelain is very white, this could indicate an

intake air leak or carburetion problem in that

cylinder. Do not attempt to diagnose any

problems yourself. Instead, take the out-

board motor to a Yamaha dealer. You should

periodically remove and check the spark

plug because heat and deposits will cause

the spark plug to slowly break down and

erode.

To remove the spark plug

1. Remove the flywheel magnet cover.

2. Remove the ECM (Electronic Control

Module) cover.

3. Remove the bolt that is securing the ig-

nition coil, and then remove the ignition

coil. NOTICE: Do not use any tools to

remove or install the ignition coil.

Otherwise, the ignition coil coupler

could be damaged. [ECM02330]

4. Remove the spark plug. WARNING!

When removing or installing a spark

plug, be careful not to damage the in-

sulator. A damaged insulator could

allow external sparks, which could

lead to explosion or fire. [EWM00561]

To check the spark plug

1. Check the condition of the spark plug. If

electrode erosion becomes excessive or

carbon and other deposits are exces-

sive, replace the spark plug with the

specified plug.

2. Measure the spark plug gap using a

1. Flywheel magnet cover

1. ECM (Electronic Control Module) cover

ZMU07182

ZMU07183

1. Bolt

2. Ignition coil

Standard spark plug:

LFR6A-11

ZMU06973

ZMU06948

Maintenance

quickly.

To prevent spilling oil where it could cause

damage to nature, it is strongly recommend-

ed that you use an oil changer to change the

engine oil. If an oil changer is not available,

drain the engine oil by removing the drain

screw. If you are not familiar with the proce-

dure for changing the engine oil, consult your

Yamaha dealer.

Changing the engine oil using an oil changer

(recommended)

1. Put the outboard motor in an upright po-

sition (not tilted). NOTICE: If the out-

board motor is not level, the oil level

indicated on the oil dipstick may not

be accurate. [ECM01861]

2. Start the engine. Warm it up and keep

the idle speed for 5-10 minutes.

3. Stop the engine and leave it for 5-10

minutes.

4. Remove the top cowling.

5. Remove the oil filler cap.

6. Remove the oil dipstick.

7. Insert the tube of the oil changer into the

oil dipstick guide, and then extract the

engine oil completely.

8. Add the correct amount of oil through the

ZMU05843

1. Oil filler cap

1. Oil dipstick

1. Oil changer

ZMU06951

ZMU07157

ZMU07184

Maintenance

filler hole. NOTICE: Overfilling the oil

could cause leakage or damage. If the

oil level is above the upper level

mark, drain until the level meets the

specified capacity. [ECM01850]

9. Install the oil filler cap and oil dipstick.

10. Leave the outboard motor for 5-10 min-

utes.

11. Remove the oil dipstick and wipe it

clean.

12. Insert the dipstick and remove it again.

Be sure to completely insert the dipstick

into the dipstick guide, otherwise the oil

level measurement will be incorrect.

13. Recheck the oil level using the dipstick

to be sure the level falls between the up-

per and lower marks. Consult your

Yamaha dealer if the oil level is out of

specified level.

14. Start the engine and make sure that the

low oil pressure-alert indicator remains

off. Also, make sure that there are no oil

leaks. NOTICE: If the low oil pressure-

alert indicator comes on or if there

are oil leaks, stop the engine and find

the cause. Continued operation with

a problem could cause severe engine

damage. Consult your Yamaha dealer

if the problem cannot be located and

corrected. [ECM01622]

15. Install the top cowling.

16. Dispose of used oil according to local

regulations.

TIP:

For more information on the disposal of

used oil, consult your Yamaha dealer.

Change the oil more often when operating

the engine under adverse conditions such

as extended trolling.

Changing the engine oil by draining the oil

1. Put the outboard motor in an upright po-

sition (not tilted). NOTICE: If the out-

board motor is not level, the oil level

indicated on the oil dipstick may not

be accurate. [ECM01861]

Recommended engine oil:

YAMALUBE 4M FC-W or 4-stroke out-

board motor oil

Engine oil quantity (without oil filter re-

placement):

6.0 L (6.34 US qt, 5.28 Imp.qt)

Engine oil quantity (with oil filter replace-

ment):

6.3 L (6.66 US qt, 5.54 Imp.qt)

ZMU07020

1. Oil dipstick

2. Upper mark

3. Lower mark

ZMU06918

Maintenance

2. Start the engine. Warm it up and keep

the idle speed for 5-10 minutes.

3. Stop the engine and leave it for 5-10

minutes.

4. Remove the top cowling.

5. Remove the screws.

6. Remove the bolts.

7. Remove the apron from starboard side

as shown in the illustration.

8. Remove the oil filler cap.

1. Screw

ZMU05843

ZMU07956

1. Bolt

1. Apron

ZMU07957

ZMU07958

Maintenance

9. Prepare a suitable container that holds a

larger amount than the engine oil capac-

ity. Remove the drain screw and gasket

while holding the container under the

drain hole. Let the oil drain completely.

Wipe up any spilled oil immediately.

TIP:

If the oil does not drain easily, change the tilt

angle or turn the outboard motor to port and

starboard to drain the oil.

10. Put a new gasket on the drain screw.

Apply a light coat of oil to the gasket and

install the drain screw.

TIP:

If a torque wrench is not available when you

are installing the drain screw, finger tighten

the screw just until the gasket comes into

contact with the surface of the drain hole.

Then tighten 1/4 to 1/2 turn more. Tighten

the drain screw to the correct torque with a

torque wrench as soon as possible.

11. Add the correct amount of oil through the

filler hole. NOTICE: Overfilling the oil

could cause leakage or damage. If the

oil level is above the upper level

mark, drain until the level meets the

specified capacity. [ECM01850]

12. Install the oil filler cap.

1. Oil filler cap

1. Drain screw

2. Gasket

ZMU06951

ZMU07959

Drain screw tightening torque:

27 Nm (2.75 kgf-m, 19.9 ft-lb)

Recommended engine oil:

YAMALUBE 4M FC-W or 4-stroke out-

board motor oil

Engine oil quantity (without oil filter re-

placement):

6.0 L (6.34 US qt, 5.28 Imp.qt)

Engine oil quantity (with oil filter replace-

ment):

6.3 L (6.66 US qt, 5.54 Imp.qt)

ZMU07020

Maintenance

13. Leave the outboard motor for 5-10 min-

utes.

14. Remove the oil dipstick and wipe it

clean.

15. Insert the dipstick and remove it again.

Be sure to completely insert the dipstick

into the dipstick guide, otherwise the oil

level measurement will be incorrect.

16. Recheck the oil level using the dipstick

to be sure the level falls between the up-

per and lower marks. Consult your

Yamaha dealer if the oil level is out of

specified level.

17. Start the engine and make sure that the

low oil pressure-alert indicator remains

off. Also, make sure that there are no oil

leaks. NOTICE: If the low oil pressure-

alert indicator comes on or if there

are oil leaks, stop the engine and find

the cause. Continued operation with

a problem could cause severe engine

damage. Consult your Yamaha dealer

if the problem cannot be located and

corrected. [ECM01622]

18. Install the apron on the starboard side as

shown in the illustration.

19. Apply LOCTITE 572 to the threads of the

bolts and then install the bolts.

1. Oil dipstick

2. Upper mark

3. Lower mark

ZMU07157

ZMU06918

1. Apron

ZMU07960

Maintenance

20. Apply LOCTITE 572 to the threads of the

screws and then install the screws.

TIP:

LOCTITE 572 is used as a sealant.

21. Install the top cowling.

22. Dispose of used oil according to local

regulations.

TIP:

For more information on the disposal of

used oil, consult your Yamaha dealer.

Change the oil more often when operating

the engine under adverse conditions such

as extended trolling.

EMU29114

Inspecting wiring and connectors

Inspect that each connector is engaged

securely.

Inspect that each ground lead is properly

secured.

EMU41670

Inspecting propeller

WARNING

EWM02680

You could be seriously injured if the en-

1. Bolt

1. Screw

ZMU07961

ZMU07956

ZMU07186

ZMU07185

Maintenance

gine accidentally starts when you are

near the propeller. Before inspecting, re-

moving, or installing the propeller, move

the control lever to the neutral position,

turn the main switch to the “ ” (off) po-

sition, remove the key, and remove the

clip from the engine shut-off switch. Turn

off the battery cut-off switch if your boat

has one.

Do not use your hand to hold the propeller

when loosening or tightening the propeller

nut. Place a block of wood between the anti-

cavitation plate and the propeller to prevent

the propeller from turning.

Checkpoints

Check each of the propeller blades for ero-

sion from cavitation or ventilation, and oth-

er damage.

Check the propeller shaft for damage.

Check the splines for wear and damage.

Check for fish line tangled around the pro-

peller shaft.

EMU41991

Removing propeller

1. Straighten the cotter pin and pull it out

using a pair of pliers.

2. Remove the propeller nut, washer, and

spacer. WARNING! Do not use your

hand to hold the propeller when loos-

ening the propeller nut. [EWM01890]

3. Remove the propeller and thrust wash-

er.

ZMU06953

1. Propeller shaft

1. Cotter pin

2. Propeller nut

3. Washer

4. Spacer

5. Propeller

6. Thrust washer

ZMU06954

432

ZMU07269

Maintenance

TIP:

If the propeller nut slot does not align with the

propeller shaft hole after tightening the pro-

peller nut to the specified torque, tighten the

nut further to align the slot with the hole.

EMU41192

Changing gear oil

WARNING

EWM02530

Make sure that the outboard motor is

mounted securely to the transom or a

stable stand. You could be severely in-

jured if the outboard motor falls on you.

Never get under the lower unit while it

is tilted. Severe injury could occur if the

outboard motor accidentally falls.

Before filling the lower unit with gear oil, the

outboard motor must be placed in a vertical

position. If you are not able to place the out-

board motor in a vertical position, have a

Yamaha dealer change the gear oil.

1. Tilt the outboard motor so that the gear

oil drain screw is at the lowest point pos-

sible.

2. Place a suitable container under the

gear case.

3. Loosen the bolt, and then remove the

cooling water inlet covers on both sides

of the gear case.

4. Remove the gear oil drain screw and

gasket.

5. Remove the oil level plug and gasket to

allow the gear oil to drain completely.

NOTICE: Check the used gear oil after

it has been drained. If the gear oil is

milky or contains water or a large

amount of metal particles, the gear

case may be damaged. Have a

Yamaha dealer check and repair the

outboard motor. [ECM00713]

TIP:

For disposal of used gear oil, consult your

Yamaha dealer.

1. Cotter pin

ZMU06956

1. Cooling water inlet cover

2. Bolt

1. Gear oil drain screw

2. Gasket

ZMU07189

ZMU07190

Maintenance

6. Remove any metal particles on the mag-

netic gear oil drain screw. NOTICE: If

there is an excessive quantity of met-

al particles on the magnetic gear oil

drain screw, this can indicate lower

unit problem. Consult your Yamaha

dealer. [ECM01900]

7. Place the outboard motor in a vertical

position. Using a flexible or pressurized

filling device, inject the gear oil into the

gear oil drain screw hole.

8. Put a new gasket on the oil level plug.

When the gear oil begins to flow out of

the oil level plug hole, insert and tighten

the oil level plug to the specified torque.

9. Put a new gasket on the gear oil drain

screw. Insert and tighten the gear oil

drain screw to the specified torque.

10. Install the cooling water inlet covers on

both sides of the gear case, and then

tighten the bolt to the specified torque.

EMU29316

Inspecting and replacing anode(s)

Yamaha outboard motors are protected from

corrosion by sacrificial anodes. Inspect the

external anodes periodically. Remove scales

from the surfaces of the anodes. Consult a

Yamaha dealer for replacement of external

anodes.

NOTICE

ECM00720

Do not paint anodes, as this would render

1. Oil level plug

2. Gasket

Recommended gear oil:

Yamalube Marine Gearcase Lube or

Hypoid gear oil

Recommended gear oil grade:

SAE 80W API GL-5 / SAE 90 API GL-5

Gear oil quantity:

1.040 L (1.099 US qt, 0.915 Imp.qt)

1 2

ZMU07191

Tightening torque:

9 Nm (0.92 kgf-m, 6.6 ft-lb)

Tightening torque:

9 Nm (0.92 kgf-m, 6.6 ft-lb)

Tightening torque:

2.0 Nm (0.20 kgf-m, 1.5 ft-lb)

ZMU07192

Maintenance

them ineffective.

TIP:

Inspect ground leads attached to external

anodes on equipped models. Consult a

Yamaha dealer for inspection and replace-

ment of internal anodes attached to the pow-

er unit.

EMU29323

Checking battery (for electric start

models)

WARNING

EWM01902

Battery electrolyte is poisonous and

caustic, and batteries generate explosive

hydrogen gas. When working near the

battery:

Wear protective eye gear and rubber

gloves.

Do not smoke or bring any other source

of ignition near the battery.

The procedure for checking the battery var-

ies for different batteries. This procedure

contains typical checks that apply to many

batteries, but you should always refer to the

battery manufacturer’s instructions.

NOTICE

ECM01920

A poorly maintained battery will quickly

deteriorate.

1. Check the electrolyte level.

2. Check the battery’s charge. If your boat

is equipped with the digital speedome-

ter, the voltmeter and low battery alert

functions will help you monitor the bat-

tery’s charge. If the battery needs charg-

ing, consult your Yamaha dealer.

3. Check the battery connections. They

ZMU07193

ZMU07194

Maintenance

should be clean, secure, and covered by

an insulating cover. WARNING! Bad

connections can produce shorting or

arcing and cause an explosion.

[EWM01912]

EMU35495

Connecting the battery

WARNING

EWM00572

Mount the battery holder securely in a

dry, well-ventilated, vibration-free loca-

tion in the boat. Install a fully charged bat-

tery in the holder.

NOTICE

ECM01124

Do not reverse the battery cables. Other-

wise, the electrical parts could be dam-

aged.

1. Make sure the main switch (on applica-

ble models) is “ ” (off) before working

on the battery.

2. Connect the red battery cable to the

POSITIVE (+) terminal first. Then con-

nect the black battery cable to the NEG-

ATIVE (-) terminal.

3. The electrical contacts of the battery and

cables must be clean and properly con-

nected, or the battery will not start the

engine.

Connecting an accessory battery (optional)

1. If connecting an accessory battery, con-

sult your Yamaha dealer about correct

wiring. For the fuse size, see ABYC (E-

11).

Single engine

1. Red cable

2. Black cable

3. Battery

ZMU01811

1. Isolator lead with circuit protection

2. Red cable

3. Black cable

4. Fuse

5. Battery for accessories

6. Battery for starting

7. Negative connecting cable

2 1

6 5

ZMU05939

Maintenance

Twin engines

EMU29371

Disconnecting the battery

1. Turn off the battery cut-off switch (if

equipped) and main switch. NOTICE: If

they are left on, the electrical system

can be damaged. [ECM01930]

2. Disconnect the negative cable(s) from

the negative (-) terminal. NOTICE: Al-

ways disconnect all negative (-) ca-

bles first to avoid a short circuit and

damage to the electrical system.

[ECM01940]

3. Disconnect the positive cable(s) and re-

move the battery from the boat.

4. Clean, maintain, and store the battery

according to the manufacturer’s instruc-

tions.

1. Starboard side engine

2. Port side engine

3. Red cable

4. Black cable

5. Isolator lead with circuit protection

6. Fuse

7. Battery for starting

8. Battery for accessories

9. Negative connecting cable

ZMU05941

7 8 7

Trouble Recovery

EMU41860

Troubleshooting

This section describes the likely causes and

remedies for problems, such as those in the

fuel, compression, and ignition systems,

poor starting, and loss of power. Please note

that all of the items in this section may not

apply to your model.

If your outboard motor requires repair, bring

it to a Yamaha dealer.

If the engine trouble-alert indicator is blink-

ing, consult your Yamaha dealer.

Starter will not operate.

Q. Does the Digital electronic control-alert in-

dicator come on?

A. Have serviced by a Yamaha dealer.

Q. Is control lever in gear?

A. Shift to neutral.

Q. Is battery capacity low or weak?

A. Check battery condition. Use battery of

recommended capacity.

Q. Are battery connections corroded or

loose?

A. Tighten battery cables and clean battery

terminals.

Q. Is fuse for starter relay or electric circuit

blown?

A. Check for cause of electric overload and

repair. Replace fuse with one of correct am-

perage.

Q. Are starter components malfunctioning?

A. Have serviced by a Yamaha dealer.

Engine will not start (starter operates).

Q. Is clip on engine shut-off cord (lanyard) in-

stalled?

A. Install clip to engine shut-off switch.

Q. Is fuel tank empty?

A. Fill tank with clean, fresh fuel.

Q. Is fuel contaminated or stale?

A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged?

A. Clean or replace fuel filter.

Q. Is fuel pump malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Are spark plugs fouled or of incorrect

type?

A. Inspect spark plugs. Clean or replace with

recommended type.

Q. Are ignition parts malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is ignition wiring damaged or poorly con-

nected?

A. Inspect wires for breaks and wear. Have

connections tightened and broken or worn

wires replaced by a Yamaha dealer.

Q. Are engine inner parts damaged?

A. Have serviced by a Yamaha dealer.

Engine idles irregularly or stalls.

Q. Are spark plugs fouled or of incorrect

type?

A. Inspect spark plugs. Clean or replace with

recommended type.

Q. Is fuel system clogged?

A. Inspect for pinched or kinked fuel line or

other obstructions in fuel system.

Trouble Recovery

Q. Is fuel contaminated or stale?

A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged?

A. Clean or replace fuel filter.

Q. Are ignition parts malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Has alert system activated?

A. Find and correct cause of alert.

Q. Is spark plug gap incorrect?

A. Replace spark plug.

Q. Is ignition wiring damaged or poorly con-

nected?

A. Inspect wires for breaks and wear. Have

connections tightened and broken or worn

wires replaced by a Yamaha dealer.

Q. Is specified engine oil not being used?

A. Inspect engine oil and replace with speci-

fied type.

Q. Is thermostat clogged or malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is fuel pump malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is fuel tank air vent restricted or clogged?

A. Remove obstruction.

Q. Is fuel joint connection incorrect?

A. Connect correctly.

Q. Is battery cable disconnected?

A. Connect securely.

Alert buzzer sounds or indicator lights.

Q. Is cooling system clogged?

A. Inspect cooling water inlet for obstruc-

tions.

Q. Is low oil pressure-alert indicator on or

blinking?

A. Have serviced by a Yamaha dealer.

Q. Is heat range of spark plugs incorrect?

A. Inspect spark plugs and replace with rec-

ommended type.

Q. Is specified engine oil not being used?

A. Inspect engine oil and replace with speci-

fied type.

Q. Is engine oil contaminated or deteriorat-

ed?

A. Replace engine oil with specified type.

Q. Is oil filter clogged?

A. Have serviced by a Yamaha dealer.

Q. Is oil pump malfunctioning?

A. Have serviced by a Yamaha dealer.

Q. Is thermostat or water pump malfunction-

ing?

A. Have serviced by a Yamaha dealer.

Q. Is there excess water in fuel filter?

A. Drain fuel filter.

Engine power loss.

Q. Is propeller damaged?

A. Have propeller repaired or replaced.

Q. Is propeller pitch or diameter incorrect?

A. Install correct propeller to operate out-

board motor at its recommended speed

Produkt Specifikationer

Mærke:	Yamaha
Kategori:	Påhængsmotor
Model:	FL300B1

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