Tohatsu MFS90A Manual
Tohatsu
Påhængsmotor
MFS90A
Læs nedenfor 📖 manual på dansk for Tohatsu MFS90A (94 sider) i kategorien Påhængsmotor. Denne guide var nyttig for 18 personer og blev bedømt med 4.5 stjerner i gennemsnit af 2 brugere
Side 1/94

O W N E R’S
M A N U A L
AAAA
Original instructions
MFS 100A
MFS 90A
MFS 75A
MFS 115A
OB No.003-11159-3BB1
MFS 140A
EN

ENOM00001-0
READ THIS MANUAL BEFORE USING THE OUTBOARD MOTOR. FAILURE TO FOLLOW THE INSTRUCT IONS
AND SAFET Y PRECAUTIONS IN THIS MANUAL CAN RESULT IN SERIOUS INJURY OR DEATH. KEEP T HIS
MANUAL IN A SAFE LOCATION FOR FUTURE REFERENCE.
Copyright © 2022 Tohatsu Corporation. All rights reserved. No part of this manual may be reproduced or
transmitted in any from or by any means without the express written permission of Tohatsu Corporation.

3
YOUR TOHATSU OUTBOARD MOTOR
ENOM00006-2
To You, Our Customer
Congratulations on your purchase of the TOHATSU outboard motor. You are now the
proud owner of an excellent outboard motor that will serve you for many years to come.
This owner's manual contains important safety, operational and maintenance informa-
tion.
The efficiency and longevity of your outboard motor will depend heavily on your oper-
ating methods and periodic maintenance. Failure to operate and maintain your out-
board motor according to the instruction in this owner's manual may void the limited
warranty, as well as reduce the efficiency and reliability of the outboard motor.
Any person operating TOHATSU outboard motor must carefully read and fully under-
stand the entire contents of this manual prior to operation. For safety, follow all safety
warnings contained within the owner's manual and the labels applied to your outboard
motor. You should keep this owner's manual where accessible while operating your out-
board motor. If the outboard motor is resold, make sure the manual is passed on to the
next owner. In case you encounter any problems, please contact an authorized
TOHATSU service shop or dealer for assistance.
Tohatsu Corporation reserves the right to change, modify, add, or remove a part or
whole of the owner’s manual without prior notice and incurring any obligations.
We are excited to take a part in your boating adventures and wish for your great and
safe boating experience.
TOHATSU CORPORATION
ENOM00113-1
DECLARATION OF CONFORMITY (DoC)
This product conforms to certain portion of the European Parliament directive and UK
Regulations. DoC contains the following information;
zName and Address of the manufacturer, EU - notified body, EU - authorized repre-
sentative, and UK - approved body.
zApplied community directives and regulations
zReference standard
zDescription of the product. (model name and serial number)
zSignature of the responsible person (name / title / date and place of issue).

4
ENOM00002-0
OWNER REGISTRATION AND IDENTIFICATION
Upon purchasing this product, be sure that the WARRANTY CARD is correctly and
completely filled out and mailed to the addressee noted there on. This WARRANTY
CARD identifies you as the legal owner of the product and serves as your warranty
registration.
TO THE EXTENT PERMITTED BY APPLICABLE LAW, YOUR OUTBOARD MOTOR WILL NOT
BE COVERED BY THE APPLICABLE LIMITED WARRANTY, IF THIS PROCEDURE IS NOT
FOLLOWED.
ENOM00003-1
PRE-DELIVERY INSPECTION
Make sure Pre-delivery inspection has been properly done by authorized TOHATSU
dealer before operating your outboard motor.

5
ENOM00005-1
Serial Number
Your outboard motor has a unique serial number. The serial number is identification of
outboard motor and is located on the outboard motor as shown in the figures below.
The serial number is required for warranty registration, filing a warranty claim as well as
making technical inquiries and may be required for other occasions.Therefore, please
write down the serial number and date of purchase in the space below.
Serial Number:
Serial Number: Date of purchase:
ENOF02400-0
ENOF02401-1

6
ENOM00007-0
NOTICE: DANGER/WARNING/CAUTION/Note
Before installing, operating or otherwise handling your outboard motor, be sure to
thoroughly read and understand this Owner's Manual and carefully follow all of the
instructions. Of particular importance is information preceded by the words “DAN-
GER,” “WARNING,” “CAUTION,” and “Note.” Always pay special attention to such
information to ensure safe operation of the outboard motor at all times.
ENOW00001-0
Failure to observe will result in severe personal injury or death, and possibly property damage.
ENOW00002-0
Failure to observe could result in severe personal injury or death, or property damage.
ENOW00003-0
Failure to observe could result in personal injury or property damage.
ENON00001-0
Note
This instruction provides special information to facilitate the use or maintenance of the out-
board motor or to clarify important points.
DANGER
WARNING
CAUTION

1. GENERAL SAFETY INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3. PARTS NAME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4. LABEL LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
1. Mounting the outboard motor on boat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2. Battery installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3. Propeller installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4. TOCS (Tohatsu Onboard Communication System) installation. . . . . . . . . 25
6. PRE-OPERATING PREPARATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
1. Fuel handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2. Fuel filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
3. Engine oil filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4. Break-In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5. Warning system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7. ENGINE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Before starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
1. Fuel feeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
2. Starting the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3. Warming up the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
4. Forward, reverse, and acceleration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
5. Stopping the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6. Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7. Trim angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
8. Tilt up and down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
9. Shallow water operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8. REMOVING AND CARRYING THE OUTBOARD MOTOR. . . . . . . . . . . . . . . . . . . .57
1. Removing the outboard motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
2. Carrying the outboard motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
3. Trailering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
9. ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
1. Steering friction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
2. Throttle grip friction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
3. Remote control lever friction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
4. Trim tab adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
10. INSPECTION AND MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
1. Daily Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
2. Periodic Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
3. Off-season storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
4. Pre-season check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
5. Submerged outboard motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
6. Cold weather precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
7. Striking underwater object . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
CONTENTS

8. Operation with multiple outboard motors . . . . . . . . . . . . . . . . . . . . . . . . 85
11. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
12. ACCESSORIES KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
13. PROPELLER TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

9
1. GENERAL SAFETY INFORMATION
2. SPECIFICATIONS
3. PARTS NAME
4. LABEL LOCATIONS
5. INSTALLATION
6. PRE-OPERATING PREPARATIONS
7. ENGINE OPERATION
8. REMOVING AND CARRYING THE OUTBOARD
MOTOR
9. ADJUSTMENT
10. INSPECTION AND MAINTENANCE
11. TROUBLESHOOTING
12. ACCESSORIES KIT
13. PROPELLER TABLE
INDEX
2
1
3
4
5
6
7
8
9
10
11
12
13
1
1

10
1
GENERAL SAFETY INFORMATION
ENOM00009-1
SAFE OPERATION OF BOAT
As the operator/driver of a boat, you are responsible for the safety of those aboard and
those in other boat around yours, and for following local boating regulations. You should
be thoroughly knowledgeable on how to correctly operate the boat, outboard motor,
and accessories. To learn about the correct operation and maintenance of the out-
board motor, please read through this manual carefully.
It is very difficult for a person in the water to take evasive action should he or she see a
power boat heading in his/her direction, even at a slow speed.
Therefore, when your boat is in the immediate vicinity of people in the water, the out-
board motor must be shifted to neutral and shut off.
ENOW00005-0
SERIOUS INJURY IS LIKELY IF A PERSON IN THE WATER MAKES CONTACT WITH A MOVING BOAT,
GEAR HOUSING, PROPELLER, OR ANY SOLID DEVICE RIGIDLY ATTACHED TO A BOAT OR GEAR
HOUSING.
ENOM00247-1
STOP SWITCH LANYARD
The engine can be stopped by pulling out the stop switch lock from the stop switch. The
stop switch lanyard is the coiled red cord with the stop switch lock on one end and a
metal clip on the other end. With attaching the stop switch lanyard to the operator's
body part or operator’s personal flotation device (PFD), the engine will stop when the
stop switch lanyard is being stretched and pulled out the lock from the switch if the
operator accidentally falls overboard or leaves from operator’s position. This function
may prevent losing control of the boat and minimize or prevent risk of collision with
other boats, people and other objects. It is operator’s responsibility to use the stop
switch lanyard.
ENOW00004-1
Accidental activation of the Stop Switch (such as the tether being pulled out in heavy seas)
could cause passengers to lose their balance and even fall overboard, or it could result in loss
of power in heavy seas, strong currents, or high winds. Loss of control while mooring is
another potential hazard.
To minimize accidental activation of the Stop Switch, the 500 mm (20 inch.) stop switch lan-
yard is coiled and can extended to a full 1300 mm (51 inch.).
ENOM00800-A
PERSONAL FLOTATION DEVICE
As the operator/driver and passenger of a boat, you are responsible to wear a PFD (Per-
sonal Flotation Device) while on the boat.
WARNING
WARNING

GENERAL SAFETY INFORMATION 11
1
ENOM00010-1
SERVICING, REPLACEMENT PARTS & LUBRICANTS
We recommend that only an authorized service shop perform service or maintenance
on your outboard motor. Be sure to use genuine parts, genuine lubricants, or recom-
mended lubricants. Be aware that the installation and use of parts not approved by
Tohatsu Corporation will void warranty and may lead to unsafe operating conditions.
ENOM00011-1
MAINTENANCE
As the owner of the outboard motor, you should be acquainted with correct mainte-
nance procedures following by maintenance section of this manual (See page 62). It is
the operator's responsibility to perform all safety inspections, proper lubrication and to
follow all maintenance instructions for safe operation. You should take the engine to an
authorized dealer or service shop for periodic inspection at the prescribed intervals.
Correct periodic maintenance and proper care of outboard motor will reduce the
chance of problems, limit overall operating expenses and contribute to longevity of your
outboard motor.
Carbon Monoxide Poisoning Hazard
Exhaust gas contains carbon monoxide, a colorless and odorless gas which can be fatal
if inhaled for any length of time.
Never start or operate the engine indoors or in any space which is not well ventilated.
Gasoline
Gasoline and its vapors are very flammable and can be explosive. Use extreme care
when handling gasoline. You should be thoroughly knowledgeable on how to correctly
handle gasoline by reading this manual.

12
2
SPECIFICATIONS
ENOM00810-A
MODEL FEATURE
( )z These models can be purchased with remote rigging kit or multi-function tiller han-
dle.
ENOM00811-A
MODEL NAME EXAMPLE
F 140A ETL
Model F75A F90A F100A F115A F140A
Type ET ET ET ET ET
Transom heights
Lzzzzz
UL z z z z
Multi-function tiller
handle ( ) ( ) ( ) ( ) ( )zzzzz
Remote Control ( ) ( ) ( ) ( ) ( )zzzzz
Power Trim & Tilt zzzzz
F A E T L140
Model descrip-
tion Horse power Product genera-
tion
Starter
system Tilt system Shaft length
F= Four stroke - A and up E= Electrical start T= Power trim&tilt L= Long 20 in
UL= Ultra long 25 in

SPECIFICATIONS 13
2
ENOM00013-0
Remark: Specifications are subject to change without notice.
Tohatsu outboard is power rated in accordance with ISO8665 (propeller shaft output).
*With propeller
ET
Item Model
F75/90/100/115/140A
ET
Remote Control
Multi-function tiller handle
Overall Length mm (in) 826 (32.5) 1541 (60.7)
Overall Width mm (in) 540 (21.3)
Overall Height mm (in) L : 1652 (65.1) UL : 1779 (70.1)
Transom Height mm (in) L : 517 (20.4) UL : 644 (25.4)
Weight* L kg (lb) 178.0 (392) 182.5 (402)
UL kg (lb) 182.5 (402) 187.0 (412)
Engine Type 4 stroke
Number of Cylinder 4
Piston Displacement
cm
3 (
cu.in.)
1995 (121.6)
Bore x Stroke mm (in) 84 x 90 (3.30 x 3.55)
Max. Output kW (PS) 55.2 (75) 66.2 (90) 73.6 (100) 84.6 (115) 103.0 (140)
Max. Operating Range
min
-1
(rpm)
5150 - 5850
Idle Speed
min
-1
(rpm)
700
Exhaust System Through hub exhaust
Lubrication System Wet sump (Trochoid pump)
Cooling System Water cooling (with thermostat)
Starting System Electric starter motor
Ignition System Battery ignition
Alternator 12V - 41A
Steering Angle Degree 70
Trim Angle Degree 8 -22
Trim Position 2
Trim Up Angle Degree 75
Gear Shift Dog clutch (F-N-R)
Gear Reduction Ratio 2.08 (25:12)
Operator Sound Pressure
(ICOMIA 39/94 Rev.1) dB (A) 90.4
Hand Vibration Level
(ICOMIA 38/94 Rev.1) m/s2- 3.6

PARTS NAME16
33
1
2
4
5
6
7
818
21
20
19
11 9
10
12
16
13
14
15
17
13
14
15
16
ENOF02403-0
ENOM00822-0
Remote control box & Fuel tank
1
Control Lever
2
Neutral lock arm
3
PTT switch
4
Free throttle lever
5
Main switch
6
Stop switch
7
Stop switch lock
8
Stop switch lanyard
9
Control lever
10
Neutral lock arm
11
PTT switch
12
Neutral throttle button
13
Main switch
14
Stop switch
15
Stop switch lock
16
Stop switch lanyard
17
Fuel gauge
18
Air vent screw
19
Fuel tank cap
20
Primer bulb
21
Fuel connector (Fuel tank
side)

17
4
LABEL LOCATIONS
ENOM00019-A
Warning label locations
ENOF02404-0
1
4
2
9
10
8
7
11
3
5
6

LABEL LOCATIONS18
4
1.
Read owner's manual.
2-1. Warning regarding starting the
engine (See page 38).
2-2. HOT SURFACE
Can cause burns.
Do not touch when operating or
immediately after the engine has
stopped.
2-3. HAZARD CAUSED BY ROTATING
PARTS
Rotating parts can cause severe
injury.
Keep hands, feet, hair, and clothing
away from all rotating parts to pre-
vent injury.
2-4. ELECTRICAL SHOCK HAZARD
High voltage can cause severe elec-
trical shock.
Do not touch electrical components
such as ignition coil or spark plug
cord when starting
or while the engine is in operation.
2-5. Fuel filter maintenance. (See page
63, 68, 69)
For tiller handle model
3.
Warning lamp (See page 31).
For tiller handle model
4. Stop switch (See page 39 and
page 50)
For RC model
5.
Warning regarding stop switch lan-
yard.
For Top mount RC
6.
Read owner's manual.
7.
Warning regarding gasoline.
8.
Warning regarding gasoline (See
page 26).
ENOF00120-0
FU
EL F ILTE
R
GAS
OL
IN
E
F
LOAT
WATER
123
4
5
3UG-72181-0
3GF-72198-1
3GF-72200-1
ENOF00008-1
ENOF00120-0
ENOF00005-E
ENOF00005-L

LABEL LOCATIONS 19
4
9.
Warning regarding gasoline (See
page 26).
10.
Warning regarding gasoline (See
page 26).
11.
Caution tag regarding for replenish
the engine oil. (See page 28).
ENOF00005-M
ENOF00005-F
3VJ-72044-000

LABEL LOCATIONS20
4
ENOM00019-B
1. Model code (Model name)
2. Serial No.
3. Rated power
4. Dry mass weight (Without propeller, with battery
cable)
5. Manufacturer name
6. Manufacturer address
7. Authorised representative
8. Authorised representative address
CE label locations
2)
3)
4)
5)
6)
1)
7)
8)
1521
CAN ICES-2 / NMB-2
0026
ENOF02405-2
Description of serial number year code
Last two digits of alphabet represent production year as below.
Year Code BB BC BD BE BF
Year of
manufacture 2022 2023 2024 2025 2026

21
5
INSTALLATION
ENOM01800-0
ENOW00961-0
Do not over-power the boat and take care
not to over-load the engine. Boat manufac-
turers specify the maximum allowable engine
power and complement of their boat in
accordance with certain standards and show
the data on the plate attached to the boat.
For unknown matters, if any, inquire to the
manufacturer of the boat.
ENOW00962-0
Never use boat equipped with an outboard
motor that outputs power exceeding the
maximum allowable limit specified by the
manufacturer of the boat, or the following
problems can occur:
zThe boat can go out of control.
zThe buoyancy property of the boat varies
from the designed value if the boat is
overloaded especially at the transom.
zThe boat may crack or be damaged
around the transom.
Over-powering boats can cause serious
injury, fatal accident and/or serious damages
to the hull.
Mounting outboard motor must be per-
formed by trained service person(s) in
well-equipped place where lift or hoist
can be used.
ENOM00025-0
Position ... Above keel line
Place the outboard motor in the center
of the boat's transom.
1. Center of boat
2. Chine
ENOM01801-0
Transom matching
Be sure that the anti ventilation plate of
the outboard motor should align with the
bottom of the hull or should not exceed
more than 30mm (1.2in) below the bot-
tom of the hull.
If the above condition cannot be met due
to the shape of the bottom of your boat,
please consult your authorized dealer.
1. Bottom of hull
2. Anti ventilation plate
ENOW00007-1
zBefore running test, check the boat with
maximum loading capacity. Overloading or
inc orr ect weigh t dis tr ib ution of th e
weight may result in boat to lose control,
even swamping or capsizing. Make sure
1. Mounting the outboard
motor on boat
WARNING
WARNING
CAUTION
1
2
ENOF02406-0
1
2
0−30 mm
(0−1.2 in)
ENOF00015-C

INSTALLATION22
5
that there is enough distance between
bottom cowl and water surface to prevent
water from entering the engine.
zMake sure to mount the engine in correct
position. If outboard motor is mounted
incorrectly, water may intrude the engine
from openings of the bottom cowl while
cruising. Exposing the engine to such con-
dition may result in severe damage to the
engine.
ENOM01802-1
Mounting the outboard motor
The outboard motor is secured to the
boat transom through the 4 bolts with
flat washers and nylon locking nuts.
ENOW00965-0
The outboard motor may displace or come
off from the boat, if the mounting bolts
loose, possibly resulting in lost of control
and /or serious personal injury. Check the
mounting bolt tightness on a regular basis.
1. Bolt (12 mm × lenght 105 mm)
2. Washer (large diameter
3. Nylon locking nut
4. Washer (small diameter)
ENON00946-0
Note
Do not reuse nylon locking nut.
ENOM001816-0
ENOW00012-1
Batter y electrolyte contains sulfuric acid
and is hazardous, causes a burn if come in
contact with your skin, and poisonous if
swallowed.
Keep battery and electrolyte away from
reach of children.
When handling the battery, be sure to:
zRead all warnings shown on the battery
case.
zPrevent electrolyte from coming in con-
tact with any part of your body. Contact
can cause serious burn or, if come in con-
tact wi th your eye, loss of si ght. Use
safety glasses and rubber gloves.
In case you came in contact with battery
electrolyte:
zFor skin, flush thoroughly with water.
zFor eye, flush thoroughly with water, and
then seek immediate medical treatment.
In case battery electrolyte is swallowed:
zSeek immediate medical treatment.
ENOW00013-B
Battery generates explosive hydrogen gas.
Be sure to:
zCharge the battery in a well-ventilated
place.
zPlace the battery away from any source of
fir e, spar ks and open flames such as
burners or welding equipment.
zDo not smoke near the battery when the
battery is charging.
WARNING
3
1
2
4ENOF00614-0
2. Battery installation
WARNING
WARNING

INSTALLATION 23
5
ENOW00014-0
zMake sure that the battery leads do not
get stuck between the outboard motor
and boat when turning, etc.
zThe starter motor may fail to operate if
the leads are incorrectly connected.
zBe sure to correctly connect the (+) and
(—) leads. Do not reverse the batter y
leads. Otherwise, the electrical system
will be damaged.
zDo not disconnect the battery leads from
battery while the engine is operating, the
electrical parts could be damaged.
zAlways use a fully charged battery.
ENOW00015-1
Do not use a batter y that is not recom-
mended. Use of a battery not recommended
can lead to poor performance of, and/or
damage to the electrical system.
ENON00006-1E
Note
Minimum batter y requirements: 12v
70Ah/20HR, 512 Cold Cranking Amps
(CCA).
Larger capacity battery is required when it
is used under a freezing condition.
Recommend connecting only the engine
battery cables to the starting battery.
Specifications and features of battery vary
by manufacturers.
Consult the manufacturer for details.
* The battery should be purchased sepa-
rately and is not supplied with the out-
board motor.
1. Place the battery box in a convenient
position and away from possible water
spray. Securely fasten both the box
and the battery so they do not shake
loose.
2. Connect the positive leads (+) to the
positive terminal (+) of the battery,
and then connect the negative lead
(—). When disconnecting the battery,
always remove the negative lead (—)
first. After connecting the positive
terminal (+), securely place a cap on it
to prevent short circuits.
1. Starter cable (red)
2. Battery cable (red)
3. Battery cable (black)
ENON00944-0
Note
zDo not use wing nuts to fasten battery
cables.
zWing nuts tend to loosen and cause
electrical system damage.
CAUTION
CAUTION
3
2
1
ENOF02444-0
ENOF02445-0

INSTALLATION24
5
ENOM00123-0
ENOW00084-0
zDo not begin propeller removal and instal-
lation procedure with spark plug caps
attached, shift in forward or reverse,
main switch at other than “OFF”, engine
stop switch lock attached to the switch,
and starter key attached, or engine could
accidentally start leading to serious per-
sonal injury. Disconnect battery cable if
possible.
zThe propeller edge is thin and sharp. Wear
the groves during replacement to protect
your hands.
ENOW00085-0
Do not hold propeller with hand(s) when
loosening or tightening propeller nut. Put a
piece of wood block between propeller
blade and anti-ventilation plate to hold pro-
peller.
ENOW00086-0
zDo not install propeller without thrust
holder, or propeller boss could be dam-
aged.
zDo not reuse split pin.
zAfter installing split pin, spread the pin
apart to prevent it from falling out which
could lead to the propeller coming off
during operation.
Propeller must be selected that will allow
the engine to reach recommended maxi-
mum operating range during cruising.
Genuine propellers are listed on PROPEL-
LER TABLE of this manual (See page 90).
1. Remove the split pin, propeller nut
and washer.
2. Apply water proof grease to the pro-
peller shaft before installing a new
propeller.
3. Install the thrust holder, propeller
stopper, washer and propeller nut
onto the shaft.
1. Propeller
2. Thrust holder
3. Bush
4. Stopper
5. Washer
6. Nut
7. Split pin
4. Tighten the propeller nut to specified
torque with holding the propeller by
wood block. And align one of grooves
to propeller shaft hole.
3. Propeller installation
WARNING
WARNING
CAUTION
ENOF00084-B
Wide-open throttle rpm range
5150 – 5850 min-1 (rpm)
1
2
4
6
5
7
3
ENOF01336-0

INSTALLATION 25
5
Propeller nut torque:
35 N·m (25 ft·lb, 3.5kgf·m)
5. Install a new split pin into the nut hole
and bend it.
ENOM01821-1
TOCS (Tohatsu Onboard Communication
System) interface coupler can provide
information regarding engine speed, fuel
consumption, and various possible mal-
functions. Contact authorized Tohatsu
dealer for more details.
4. TOCS (Tohatsu Onboard
Communication System)
installation
ENOF02441-0

26
6
PRE-OPERATING PREPARATIONS
ENOM00030-A
ENOW000017-0
Use of improper gasoline can damage your
engine. Engine damage resulting from the
use of improper gasoline is considered mis-
use of the engine, and damage caused
thereby will not be covered under the lim-
ited warranty.
ENOM00031-1
FUEL RATING
Use only major brand unleaded fuel
meeting the following specifications:
USA and Canada — having a posted pump
Octane Rating of 87 (R+M)/2 minimum.
Premium gasoline (92 [R+M]/2 Octane) is
also acceptable. Do not use leaded gaso-
line.
O u t s i d e U S A an d C an a da — U s e
unleaded gasoline with declared octane
rating of 91 RON or over. Use of premium
gasoline of 98 RON is also allowed.
ENOM00032-1
GASOLINES CONTAINING
ETHANOL
The fuel system components on your
TOHATSU outboard motor will withstand
up to 10% ethyl alcohol (hereinafter
referred to as the "ethanol") content in
the gasoline. If the gasoline in your area
contains ethanol, be aware of certain
adverse effects that can occur. Increas-
ing the percentage of ethanol in the fuel
can also worsen these adverse effects.
Some of these adverse effec ts are
caused by ethanol absorbing moisture in
the air, which leads to separation of the
water/ethanol from the gasoline in the
fuel tank.
Use of gasoline containing ethanol may
accelerate:
zCorrosion of metal parts
zDeterioration of rubber or plastic parts
zFuel permeation through rubber fuel
lines
zStarting and operating difficulties
If the use of gasoline containing ethanol
cannot be avoided or presence of etha-
nol is suspected in the gasoline, it is rec-
ommended to use a filter to separate
water, and frequently check the fuel sys-
tem for leaks, mechanical parts for cor-
rosion and abnormal wear.
In case any of such abnormality is found,
discontinue the use of such gasoline and
contact our dealer immediately.
If the outboard motor will only be used
infrequently, please see the remarks on
fuel deterioration in the STORAGE chap-
ter (P 82) for additional information.
ENOW00975-0
When operating an outboard motor with
gasoline containing ethanol, storing gasoline
in the fuel tank for long periods should be
avoided. Storing gasoline for long periods
creates unique problems. In cars, ethanol
blended fuels are normally consumed before
they can absorb enough moisture to cause
problems, but boats often sit idle long
enough for separation phase to take place.
In addition, internal corrosion may take
place during storage if ethanol washes away
the oil films protecting internal components.
1. Fuel handling
CAUTION
CAUTION

PRE-OPERATING PREPARATIONS 27
6
ENOW00018-1
Fuel leakage can cause fire or explosion,
potentially leading to severe injury or loss of
life. Every par t of fuel system should be
inspected periodically. Inspect for fuel leak,
hardness or any alteration of rubber, expan-
sion and/or corrosion of metals especially
after long term storage. In case any indica-
tion of fuel leakage or degradation in fuel
system is found, replace the part immedi-
ately before using the outboard motor.
ENOM00043-B
ENOW00976-0
Do not fill the fuel tank over capacity. Under
high temperature conditions, excessive gas-
oline may evaporate/leak through air vent
screw when it is loose or open. Leaking of
gasoline is a may lead to a dangerous fire
hazard.
ENOW00028-1
Consult an authorized dealer for details on
handling gasoline, if necessary.
Gasoline and its vapor are very flammable
and can be explosive.
When carrying a fuel tank containing gaso-
line:
zClose the fuel tank cap and air vent screw
of fuel tank cap, or gasoline may evapo-
rate through the air vent screw and may
lead to a fire hazard.
zDo not smoke.
When or before refueling:
zBe sure to remove the static electricity
charged in your body before refueling.
zThe static electricity may ignite the gaso-
line vapor during refueling.
zStop the engine, and do not start the
engine during refueling.
zDo not smoke.
zBe careful not to overfill fuel tank. Wipe
up any spilled gasoline immediately.
When or before cleaning the gasoline tank:
zDismount fuel tank from the boat.
zPlace the fuel tank away from every
source of ignition, such as sparks or open
flames.
zDo the work outdoors or in a well venti-
lated area.
zWipe up gasoline well immediately if
spilled.
After cleaning gasoline tank:
zWipe up gasoline well immediately if
spilled.
zIf the fuel tank is disassembled for clean-
ing, r eassemble carefully. Incorrect
assembly may cause a fuel leak, possibly
leading to fire or explosion.
zDispose aged or contaminated gasoline in
accordance with local regulations.
ENOW00029-1
When opening fuel tank cap, be sure to fol-
low the procedure described below. Fuel
could blast out if the fuel tank cap is opened
by using another procedure when internal
pressure of fuel tank is raised by heat from
sources such as sun light.
ENOW00946-0
Separate tank must be fixed at appropriate
position so that well ventilated and tank
does not move or fall down while operating.
WARNING
2. Fuel filling
WARNING
WARNING
WARNING
CAUTION

PRE-OPERATING PREPARATIONS28
6
1. Fully open the air vent screw on the
fuel tank cap and release internal
pressure.
1. Air vent screw
2. Fuel tank cap
2. Open the fuel tank cap slowly.
3. Fill the fuel carefully not to over flow.
4. After filling the tank, close the fuel
tank cap.
ENOM00037-A
ENOW00022-2
The engine oil is drained for shipping at the
factory. Be sure to fill the engine oil to the
proper level before starting the engine.
ENOW00092- 1
zDo not overfill engine oil, or engine oil
could leak and/or engine could be dam-
aged. If engine oil level is over upper limit
marks of dip stick, drain oil to level lower
than upper limit.
zBe sure that outboard motor is upright
when checking or changing oil.
zStop the engine immediately if low oil
pressure warning lamp or oil leak is found,
or engine could be severely damaged.
Consult your dealer.
zWipe off engine oil well immediately if
spilled and dispose of it in accordance
with local fire prevention and environ-
ment protection regulations.
ENOM01812-B
1. Place the outboard motor in a vertical
position.
2. Turn the top cowl hook levers to
unlock, lift and remove the top cowl.
1. Cowl hook lever
3. Engine oil filling
CAUTION
1
2
ENOF00027-B
SAFE FILL
LEVEL
25 L
NIVEAU
MAXIMUM
ENOF00030-A
CAUTION
1
ENOF02435-0
1
1
ENOF02436-0

PRE-OPERATING PREPARATIONS 29
6
3. Remove the oil filler cap.
4. Fill the engine through the filler port
with the oil to between the upper and
lower limit mark on the dipstick.
5. Tighten the oil filler cap.
1. Filler cap
2. Dipstick
3. Filler port
1. Upper limit 4200 mL (4.4/3.7 US/Imp qt.)
2. Lower limit 2200 mL (2.3/1.9 US/Imp. qt.)
6. Start the engine and idling for 5 min-
utes, then check for no oil leaks and
no warning indicate.
7. Stop the engine and leave it for 5
minutes and check oil level on the
dipstick. Add oil if necessary.
8. Make sure that the top cowl is cor-
rectly seated on the bottom cowl seal
rubber.
9. Turn the top cowl hook levers to
securely lock.
1. Cowl hook lever
Engine oil recommendation
Use only high quality 4-stroke outboard
motor oil to insure performance and pro-
longed engine life.
SAE: 10W-30 or 10W-40
API: SH, SJ or SL
Engine oil viscosity must be selected
from the following chart according to the
average temperatures in your area.
ENOW0002A-A
Use of engine oils that do not meet these
requirements will result in reduced engine
life, and other engine problems.
1
3
2
ENOF02407-0
2
1
ENOF02432-0
Engine oil volume
Approximately 4,000 mL (4.2/3.5 US/Imp.qt.)
CAUTION
1
ENOF02439-0
1
1
ENOF02440-0
10W−40
10W−30
˚C
˚F
40
96
30
86
20
68
10
50
0
32
-10
14
-20
-4
-30
-22
ENOF00208-0

PRE-OPERATING PREPARATIONS30
6
ENOM00033-A
Your new outboard motor and lower unit
require break-in for the moving compo-
nents accor di ng to t he condi ti o ns
described in the following time table.
Please refer to ENGINE OPERATION sec-
tion (See page 37) to learn how to cor-
rectly start and operate the outboard
motor.
ENOW00024-1
Do not operate the outboard m otor in
closed area or area with not enough ventila-
tion.
Exhaust gas emitted by the outboard motor
contains carbon monoxide that may cause
dizziness, nausea, other health problem or
even death if inhaled continuously.
During operation of the outboard motor:
zKeep peripheral area well ventilated.
zAlways stay on the windward side of emis-
sion.
ENOW00023-1
Operating the outboard motor without
break-in can shorten life.
If any abnormality is experienced during the
break-in:
zDiscontinue the operation immediately.
zHave the dealer check the product and
take proper action(s) if necessary.
ENON00008-2
Note
zDuring Break-in, run the outboard
motor at varied RPM less than specified
engine speed. Not following the proce-
dure may result in problems and may
shorten the product life.
zBreak-in must be conducted under
load in the water in-gear with propeller
installed.
4. Break-In
DANGER
CAUTION
1–10 min 10 min – 2 hrs 2–3 hrs 3–10 hrs After 10 hrs
Throttle Position Idle Less than 1/2
throttle
Less than 3/4
throttle 3/4 throttle Full throttle
available
Speed Approx. 3000
min -1
(rpm) max
Full throttle run
allowed for 1
min every 10
min
Approx. 4000
min-1 (rpm). Full
throttle run
allowed for 2
min every 10
min

PRE-OPERATING PREPARATIONS32
6
ENOM01822-0
Warning indicators, faults and remedy
For RC model
s
*1: In this case, oil pressure switch is “ON”.
*2: It is necessary to stop the engine, if you want to stop the working indicators and re-set the warning system.
*3: Engine speed controlled to 1800 min-1(rpm).
*4: Flashing pattern, 1 sec ON and 9 secs OFF.
High speed ESG (Electronic Safety Governor)
High speed ESG is a device to prevent over revolution of the engine. If the load to the engine becomes light for
some reason, it runs at a higher speed than the usual. In such the case, the buzzer sounds and the ESG is
activated to restrict amount of fuel injection. Therefore, the engine speed varies and be controlled under 6000
min-1 (rpm).
Low speed ESG
Low speed ESG is a device to prevent the engine from getting damage. If the engine has problems regarding
cooling water, oil pressure, and sensors, the low speed ESG is activated to restrict amount of fuel injection.
Therefore, the engine speed varies and be controlled under 1800 min
-1 (rpm) or 2800 min-1 (rpm).
Warning indicators
ESG Description of faults
or notice
Rem-
edy
Sound
A lamp
Continuous ON - Normal system test
when key on
Continuous - High speed ESG Engine speed exceeds
maximum
allowable RPM
1
Continuous (*2) ON
(*2) Low speed ESG (*2) Low oil pressure (*1) 2
Continuous - Low speed ESG Engine temperature is high 3
Continuous Flashing Low speed ESG (*3) Engine temperature is abnormally high 3
- Flashing Low speed ESG Engine temperature sensor or MAP
sensor mulfanction,
or battery overcharge.
4
- Flashing -
Mulfanction of sensors or electrical
parts other than
the above sensors.
4
- Flashing (*4) - Oil change reminder (every 100 hrs.) 5
One beep - - Lowest RPM of variable idling system
Two beep - - Highest RPM of variable idling system

PRE-OPERATING PREPARATIONS 33
6
ENOM00126-0
Remedy
1.
Reduce the speed to less than half
open throttle, and move to safe place
quickly, and stop the engine.
Check the propeller for bent or dam-
age on blades.
Consult an authorized dealer if engine
shows the same result even after
replacing propeller with a new one.
2.
Move to safe place quickly, and stop
the engine until it cools down.
Check the engine oil level, and add
engine oil if necessary.
Consult your dealer if the engine oil
level is too low or too high.
3.
Move to safe place quickly, and check
if cooling water is discharged from
the water check port at idle speed
and stop the engine.
Remove any foreign matter on the
gear case and propeller if necessary.
Consult an authorized dealer if no
discharge of cooling water.
4.
Consult an authorized dealer.
5.
Replace the engine oil (See page 69)
and reset the indicator (See page 35).

PRE-OPERATING PREPARATIONS34
6
ENOM00041-A
Warning indicators, faults and remedy
s
*1: In this case, oil pressure switch is “ON”.
*2: It is necessary to stop the engine, if you want to stop the working indicators and re-set the warning system.
*3: Engine speed controlled to 1800 min-1(rpm).
*4: Flashing pattern, 1 sec ON and 9 secs OFF.
High speed ESG (Electronic Safety Governor)
High speed ESG is a device to prevent over revolution of the engine. If the load to the engine becomes light for
some reason, it runs at a higher speed than the usual. In such the case, the buzzer sounds and the ESG is
activated to restrict amount of fuel injection. Therefore, the engine speed varies and be controlled under 6000
min-1 (rpm).
Low speed ESG
Low speed ESG is a device to prevent the engine from getting damage. If the engine has problems regarding
cooling water, oil pressure, and sensors, the low speed ESG is activated to restrict amount of fuel injection.
Therefore, the engine speed varies and be controlled under 1800 min
-1 (rpm) or 2800 min-1 (rpm).
Warning indicators
ESG Description of faults
or notice
Rem-
edy
Sound
A lamp B lamp C lamp
Continuous ON ON ON - Normal system test
when key on
Continuous ---High speed
ESG
Engine speed exceeds
maximum
allowable RPM
1
Continuous (*2) ON
(*2) - - Low speed
ESG (*2) Low oil pressure (*1) 2
Continuous -Flashing -Low speed
ESG Engine temperature is high 3
Continuous Flashing Flashing Flashing Low speed
ESG (*3)
Engine temperature is
abnormally high 3
-- - Flashing - Low battery voltage 4
- Flashing Flashing Flashing Low speed
ESG
Engine temperature sensor
or MAP sensor mulfanction,
or battery overcharge.
4
- Flashing Flashing Flashing -Mulfanction of sensors or
electrical parts other than
the above sensors.
4
- Flashing (*4) - - - Oil change reminder (every
100 hrs.) 5
One beep - - - - Lowest RPM of variable
idling system
Two beep - - - - Highest RPM of variable
idling system

PRE-OPERATING PREPARATIONS 35
6
ENOM00126-0
Remedy
1.
Reduce the speed to less than half
open throttle, and move to safe place
quickly, and stop the engine.
Check the propeller for bent or dam-
age on blades.
Consult an authorized dealer if engine
shows the same result even after
replacing propeller with a new one.
2.
Move to safe place quickly, and stop
the engine until it cools down.
Check the engine oil level, and add
engine oil if necessary.
Consult your dealer if the engine oil
level is too low or too high.
3.
Move to safe place quickly, and check
if cooling water is discharged from
the water check port at idle speed
and stop the engine.
Remove any foreign matter on the
gear case and propeller if necessary.
Consult an authorized dealer if no
discharge of cooling water.
4.
Consult an authorized dealer.
5.
Replace the engine oil (See page 69)
and reset the indicator (See page 35).
ENOM00870-0
Engine oil replacement indicator
function reset method
As for "Engine oil replacement indicator
function", informing the appropriate
timing of engine oil re placement by
blinking of the lamp, when beyond 100
hours operating.
1. Be certain the safety lanyard is
installed. Turn the key to the 'on'
position and after the 'beep' pull the
safety lanyard off.
2. Within 5-10 seconds, pull the red
knob on the safety switch out and
release.
3. Wait 5-10 seconds and pull the red
knob out and release.
1 Second
ENOF00853-0
ENOF00854-0
ENOF00854-0

PRE-OPERATING PREPARATIONS36
6
4. Within 5-10 seconds you will here 3
beeps to inform you that you have
successfully reset the system.
5. Turn the ley to the 'off' position and
replace the safety lanyard lock.
The engine oil replacement indicators
function operates again after 100 hours
operation from reset this function.
ENOF00856-0

37
7
ENGINE OPERATION
ENOM00042-0
ENOM00246-0
Oil Level checking
Check the engine oil level before each
use. If the oil level is low or too high, the
life of the engine will be shortened sig-
nificantly. (To properly check the engine
oil level, follow the instructions, see
page 64)
1. Oil filler cap
2. Dipstick
3. Filler port
1. Upper limit 4200 mL (4.4/3.7 US/Imp qt.)
2. Lower limit 2200 mL (2.3/1.9 US/Imp. qt.)
ENOM01804-0
ENOW00029-A
When opening fuel tank cap, be sure to fol-
low the procedure described below. Fuel
could blast out through the fuel tank cap in
case the cap is loosened by using another
procedure when internal pressure of fuel
tank is raised by heat from sources such as
sun light.
ENOW00947-0
When using a separate tank, be sure that the
fu el lin e is not kinked and is connected
securely.
1. Fully open the air vent screw on the
fuel tank cap.
1. Air vent screw
2. Fuel tank cap
2. Open the fuel tank cap slowly and
release internal pressure completely.
After that, close the fuel tank.
3. Remove the cap from the fuel joint.
Connect the fuel hose of the primer
bulb and secure with a hose band.
Before starting
1
3
2
ENOF02407-0
2
1
ENOF02432-0
1. Fuel feeding
WARNING
CAUTION
1
2
ENOF00027-B

ENGINE OPERATION40
7
4. Set the throttle grip to START posi-
tion.
1. Throttle grip
5. Turn the main switch key to ON posi-
tion and confirm three warning lamps
light up with beep sound and then
lights out.
6. Turn the main switch key to the START
position and release it to start the
engine. The engine will crank continu-
ously until the engine starts.
ENON00942-0
Note
zIt takes maximum 4 seconds of the
continuous crank before the engine
starts.
zIf fail to start the engine, crank again
after 10 seconds or more.
1. Main switch key
2. Warning lamp
7. Make sure that water is being dis-
charged from the cooling water check
port.
ENOM01807-0
Side mount RC type
1. Be sure to install the stop switch lock
to the stop switch, and attach the
stop switch lanyard securely to the
operator or to the operator's PFD
(Personal Flotation Device.)
1
ENOF00866-2
R
N
F
1
2
ENOF00867-3A
ENOF02408-0

ENGINE OPERATION 41
7
1. Stop switch lock
2. Insert the main switch key.
3. Set the control lever in the Neutral
position. Do not raise the free throt-
tle lever when starting the engine.
1. Neutral (N)
2. Control lever
3. Fully opened (Forward)
4. Fully opened (Reverse)
5. Free throttle lever
6. Main switch key
7. Stop switch
4. Turn the main switch key to ON posi-
tion and confirm three warning lamps
light up with beep sound and then
lights out.
1. Warning lamp
5. Turn the main switch key to the START
position and release it to start the
engine. The engine will crank continu-
ously until the engine starts.
ENON00942-0
Note
zIt takes maximum 4 seconds of the
continuous crank before the engine
starts.
zIf fail to start the engine, crank again
after 10 seconds or more.
1. ON
2. START
3. OFF
ENON00035-1
Note
The free throttle lever cannot be raised
when the control lever is in Forward or
Reverse.
6. Check the cooling water from cooling
water check port.
1
ENOF00869-1
N
R
F
12
3
4
5
6
7
ENOF00870-1
1
ENOF00851-A
1
2
3
ENOF00871-1

ENGINE OPERATION42
7
ENOM00974-B
Top mount RC type
1. Be sure to install the stop switch lock
to the stop switch, and attach the
stop switch lanyard securely to the
operator or to the operator's PFD
(Personal Flotation Device.)
1. Stop switch lock
2. Insert the main switch key.
3. Set the control lever in the Neutral
position. Do not use the Neutral
throttle button to open the throttle
when starting the engine.
1. Forward (F)
2. Neutral (N)
3. Reverse (R)
4. Fully opened (Forward)
5. Fully opened (Reverse)
6. Neutral throttle button
7. Control lever
8. Neutral lock arm
4. Turn the main switch key to ON posi-
tion and confirm three warning lamps
light up with buzzer sound and then
go off.
1. Warning lamp
5. Turn the main switch key to the START
position and release it to start the
engine. The engine will crank continu-
ously until the engine starts.
ENOF02408-0
1
ENOF00936-1
1
ENOF02409-0
N
R
F
1
7
4
8
5
6
7
2
3
R
F
N
ENOF00937-0
1
ENOF00851-A

ENGINE OPERATION 43
7
ENON00942-0
Note
zIt takes maximum 4 seconds of the
continuous crank before the engine
starts.
zIf fail to start the engine, crank again
after 10 seconds or more.
1. ON
2. START
3. OFF
ENON00939-0
Note
The neutral throttle button can not be
push-in when the control lever shift is in
Forward or Reverse.
6. Check the cooling water from cooling
water check port.
ENOM00043-A
ENOW00932-1
Be sure to check that cooling water is dis-
charged from the cooling water check port
during warm up.
Warm the engine at low engine speeds
for about
3 minutes : above 5°C (41°F)
5 minutes at 2000 min-1 (rpm) : blow 5°C
(41°F)
This allows the lubricating oil to circulate
to all parts of the engine. Operating the
engine without warm up shortens the
engine's life.
ENOM01826-0
Engine speeds
Idling speed after warming up.
Remark: The idling speed automatically
increases depending on the engine tem-
perature. When the engine reaches nor-
mal operating temperature, it will return
to the specified idling speed.
3
1
2
ENOF00938-1
3
1
2
ENOF02410-0
3. Warming up the engine
CAUTION
Clutch in (In gear) Clutch off (Out of gear)
700 min-1 (rpm) 700 min-1 (rpm)
ENOF02408-0

ENGINE OPERATION44
7
ENOM00972-0
Free throttle lever (Side mount RC
type)
ENOW00956-0
zKeep the free throttle lever fully closed-
position when start the engine.
zThe free throttle lever is inoperative
unless the
control lever is in neutral.
zAlso, the control lever is inoperative
unless the free throttle lever is returned
to the fully-closed position.
The free throttle lever is for warm-up
operation. (Not required for engine start-
ing) With the control lever in neutral,
move the free throttle lever upward to
open the throttle.
1. Fully-open
2. Fully-closed
ENOM00973-0
Neutral throttle button (Top
mount RC type)
ENOW00957-0
The control lever does not operate unless
the neutral lock arm is pulled.
The neutral throttle button is for warm-
up operation. (Not required for engine
starting) When the control lever is in
neutral, push and hold the neutral throt-
tle button. While holding the button,
move the lever forward to throttle up the
engine.
When the control lever is returned to the
neutral position, the button will reset
automatically.
1. Neutral throttle button
2. Forward
ENOM00880-A
Trolling speed control
(except for normal tiller handle
type)
If the main switch key is pressed for 1
(one) second during idling or trolling
operation, engine speed changes.
each time the main switch key is pressed.
Engine speed changes as follows.
Starting
700 min
-1
(rpm)
Ѝ
Ѝ
Ѝ
ЍЍ
650 min
-1
(rpm)
Ѝ
Ѝ
Ѝ
ЍЍ
700 min
-1
(rpm)
Ќࠉ
ࠉ
ࠉ
ࠉࠉ Ў
750 min
-1
(rpm) 750 min
-1
(rpm)
Ќࠉ
ࠉ
ࠉ
ࠉࠉ Ў
800 min
-1
(rpm)
Ћ
Ћ
Ћ
ЋЋ
850 min
-1
(rpm)
Ћ
Ћ
Ћ
ЋЋ
800 min
-1
(rpm)
CAUTION
CAUTION
1
2
ENOF00934-0
1
2
ENOF00935-0
ON
1second
ENOF00876-0

ENGINE OPERATION46
7
ENOW00863-0
Idle speed may be higher during warming up
of engine. If shifted to Forward or Reverse
during warming up, it may be difficult to shift
back to neutral. In such case, stop engine,
shift to neutral, and restart engine to warm
up.
ENON00014-0
Note
Frequent shifting to forward or reverse can
accelerate wear or degradation of parts. In
such case, replace gear oil earlier than the
period specified.
ENOW00864-0
Do not increase engine speed unnecessarily
when the shift is in neutral and reverse, or
engine damage may occur.
ENOM00890-B
Tiller handle type
ENOW00865-0
Do not force to shift when the throttle grip is
not in the fully closed position, otherwise,
steering system and/or shifting mechanism
may be damaged. The control lever is inop-
erative unless the throttle grip is in the fully
closed position. (Multi-function tiller type)
1. Shift lever
Forward
1. Turn the throttle grip to reduce
engine speed.
2. When the engine reaches trolling (or
idling) speed, quickly pull the shift
lever to the Forward position.
Reverse
1. Turn the throttle grip to reduce
engine speed.
2. When the engine reaches trolling (or
idling) speed, quickly pull the shift
lever to the Reverse position.
Acceleration
After shifting, twist the throttle grip grad-
ually to accelerate.
1. Throttle grip
CAUTION
CAUTION
CAUTION
R
N
F
1
ENOF00865-2
1
ENOF00878-2

ENGINE OPERATION 47
7
ENOM00900-0
Side mount RC type
1. Forward (F)
2. Neutral (N)
3. Reverse (R)
4. Fully opened (Forward)
5. Fully opened (Reverse)
6. Free throttle lever
7. Control lever
8. Neutral lock arm
Forward
1. Quickly push the control lever to the
Forward (F) position 32°, where the
gear is connected, while lifting up on
the neutral lock arm located under
the control lever grip.
2. Further forward motion will open the
throttle.
Reverse
1. Quickly pull the control lever to the
Reverse (R) position at 32°, where the
gear will be connected, while lifting up
on the neutral lock arm located under
the control lever grip.
2. Further rearward motion will open
the throttle.
Acceleration
After shifting, advance the control lever
gradually to accelerate.
1. Control lever
ENOM00975-A
Top mount RC type
1. Forward (F)
2. Neutral (N)
3. Reverse (R)
4. Fully opened (Forward)
5. Fully opened (Reverse)
6. Neutral throttle button
7. Control lever
8. Neutral lock arm
Forward
1. Quickly push the control lever to the
Forward (F) position 35°, where the
gear is connected, while lifting up on
the neutral lock arm located under
the control lever grip.
2. Further forward motion will open the
throttle.
N
R
F
27
4
5
6
78
13
ENOF00877-1
N
R
F
1
ENOF00879-2
N
R
F
1
7
4
8
5
6
7
2
3
R
F
N
ENOF00937-0

ENGINE OPERATION48
7
Reverse
1. Quickly pull the control lever to the
Reverse (R) position at 35°, where the
gear is connected, while lifting up on
the neutral lock arm located under
the control lever grip.
2. Further rearward motion will open
the throttle.
Acceleration
After shifting, advance the control lever
gradually to accelerate.
ENOM00049-A
ENOW00868-1
Be careful not to remove engine stop switch
lanyard from engine accidentally while boat
is running. Sudden stop of engine can cause
loss of steering control, speed, possibly
leading the crew(s) and or objects on the
boat to be thrown forward due to inertial
force.
Tiller handle type
1. Turn the throttle grip to the slow
position.
2. Put the shift lever in the Neutral posi-
tion.
Run the engine for 2-3 minutes at
idling speed for cooling down if it has
been running at full speed.
1. Throttle grip
2. Shift lever
3. Main switch key
3. Turn the main switch key to the OFF
position.
Side mount RC type
1. Put the control lever in the Neutral
position and run the engine for 2-3
minutes at idling speed for cooling
down if it has been running at full
speed.
1. Control lever
2. Main switch key
5. Stopping the engine
WARNING
1
ENOF00866-2
R
N
F
3
21
ENOF00880-C
N
R
F
1
2
ENOF00881-1

ENGINE OPERATION 49
7
2. Turn the main switch key to the OFF
position.
1. ON
2. START
3. OFF
ENOW00869-1
After stopping the engine:
zClose the air vent screw on the fuel tank
cap.
zDisconnect the fuel connector from the
engine and the fuel tank.
zDisconnect the battery cable, after each
use.
ENOM00975-0
Top mount RC type
1. Put the control lever in the Neutral
position and run the engine for 2-3
minutes at idling speed for cooling
down if it has been running at full
speed.
1. Control lever
2. Turn the main switch key to the OFF
position.
2. Main switch key
3. ON
4. START
5. OFF
ENOW00869-1
After stopping the engine:
zClose the air vent screw on the fuel tank
cap.
zDisconnect the fuel connector from the
engine and the fuel tank.
zDisconnect the battery cable, after each
use.
Emergency engine stopping
Press the emergency stop switch or
remove stop switch lock to stop the
engine.
WARNING
1
2
3
ENOF00871-1
N
R
F
1
R
F
N
ENOF00939-0
WARNING
5
3
4
2
ENOF00938-A1
5
3
4
2
ENOF02411-0

ENGINE OPERATION50
7
1. Stop switch
2. Stop switch lock
1. Stop switch
2. Stop switch lock
1. Stop switch
2. Stop switch lock
ENOM00910-1
Spare emergency stop switch lock
(For CE marking model)
A spare emergency stop switch lock is
provided in the accessories bag.
Make sure that spare stop switch lock is
available before operating outboard
motor.
When used as described, the emergency
stop switch clip and emergency stop
switch lanyard system stops the engine if
the operator is thrown overboard. When
an operator falls into water, be sure to
use spare emergency stop switch lock.
R
N
F
1
2
ENOF00883-2
2
1
ENOF00869-A
1
2
ENOF00938-B1
1
2
ENOF02412-0
ENOF00891-0

ENGINE OPERATION 51
7
ENOM00920-0
ENOW00870-1
Sudden steering may cause passenger(s) to
be thrown overboard or fall.
Tiller handle type
Right turn
Move the tiller handle to the left
Left turn
Move the tiller handle to the right.
Remote control type
Right turn
Turn the steering wheel to the right.
Left turn
Turn the steering wheel to the left.
ENOM01815-0
ENOW00043-1
zAdjust the trim angle when the engine is
stopped.
zDo not put hand or finger in between out-
board motor body and clamp bracket
when adjusting trim angle to prevent pos-
sible injury.
zUnsuitable trim position can cause loss of
control of boat. When testing a trim posi-
tion, run the boat slowly initially to see if
it can be controlled safely.
ENOW00044-1
Excessive trim up or down may cause unsta-
ble boat operation, loss of control that may
leads to accident during cruising.
zFor manual tilt model, If you feel the trim
is improperly positioned, stop the boat
and readjust trim angle before continuing
to cruise.
zFor outboard motor model with PT or PTT
switch on the bottom cowl, do not oper-
ate the switch during while cruising, or
control of boat may be lost.
The trim angle of the outboard motor can
be adjusted to suit the transom angle of
the hull, and load conditions. Choose an
appropriate trim angle that will allow the
anti-ventilation plate to run parallel to
the water surface during operation.
ENOM01817-0
Power Trim & Tilt type
The provided power trim & tilt can be
adjusted to set the desired trim angle of
the outboard motor according to the
transom shape, planing speeds and load.
6. Steering
WARNING
ENOF00892-0
ENOF00893-0
7. Trim angle
WARNING
WARNING

ENGINE OPERATION52
7
It is imperative that the trim angle is
adjusted correctly. Incorrect adjustment
will cause the boat to sway, deteriorate
engine performance and may cause
unsafe steering conditions.
ENOW00970-0
The power trim & tilt can be set to any trim
angle. However, do not use the tilt angle
range when cruising except shallow water
operation.It may ingest air into the water
cooling system, resulting in engine overheat-
ing.
1. Max.tilt angle : 63° from the vertical
2. Trim angle : -4 to 10°
3. Boat transom angle : -12°
ENOM01808-0
Proper trim angle
The trim angle is optimum when the boat
is parallel to the water surface while run-
ning.
1. Perpendicular to the water surface
ENOM01809-0
Improper trim angle (bow rises too
high)
When the trim angle is excessive, the bow
will rise out of the water and the speed
will be decrease. Furthermore, the bow
may sway or the bottom may slam the
water while running.
Decrease the trim angle by pressing
"DN"(Down) of power trim & tilt switch.
CAUTION
0°
1
2
3
ENOF02446-0
1
ENOF00051-1
ENOF00052-0
ENOF02437-0
DN UP
UP
DN
ENOF00067-2

ENGINE OPERATION 53
7
ENOM01818-0
Improper trim angle (bow dips into the
water)
When the trim angle is too small, the bow
will dip into the water, the speed will
decrease, and water may enter the boat.
Increase the trim angle by pressing "UP"
of power trim & tilt switch.
ENOM01819-0
Trim meter
When the trim angle is set as desired,
take a reading off the trim meter, and
record it for future reference.
ENOM01820-0
Trust rod adjustment
The trim angle at full tilt down is adjust-
able by selected the thrust rod position.
1. Thrust rod
2. Higher
3. Lower
1. Stop the engine.
2. Shift into neutral position.
3. Tilt up the outboard motor.
4. Lock the tilt stopper.
5. Remove the Snap pin and thrust rod
as shown in the picture.
1. Snap pin
2. Thrust rod
6. Reinstall the thrust rod in the desired
position securely.
7. Put the Snap pin back and unlock the
tilt stopper.
8. Gently tilt down the outboard motor.
UP
DN
ENOF00941-0
ENOF00053-0
JNOF00807-1
2
3
1
ENOF02413-0
1
2
ENOF02414-0

ENGINE OPERATION54
7
ENOM00060-A
ENOW00055-1
Do not tilt the outboard motor up or down
when swimmer(s) and/or passenger(s) are
near to prevent them from being caught
between outboard motor body and clamp
bracket.
ENOW00048-1
When tilting up or down, be careful not to
place your hand between the swivel bracket
and the stern bracket.
ENOW00056-A
When tilting up outboard motor with fuel
joint for over a few minutes, be sure to dis-
connect fuel hose, or fuel may leak, poten-
tially catching fire.
ENOW00057-1
Do not tilt up the outboard motor while
engine is operating, or no cooling water may
be discharged, leading to engine seizure due
to overheating.
ENON00921-1
Note
After use, leave the outboard motor
upright for a minute to drain the water
from inside the engine.
ENOM01810-0
Power Trim & Tilt type
Tilt up
1. Press the power trim and tilt switch
"UP" until the motor has been tilted
up completely.
2. Pull the tilt stopper down as shown
below drawing.
1. Tilt stopper
3. Press the power trim and tilt switch
"DN" (Down) until the trim rods has
been retracted completely.
8. Tilt up and down
WARNING
WARNING
WARNING
CAUTION
ENOF02437-0
DN UP
UP
DN
ENOF00067-2
UP
DN
ENOF00941-0
1
ENOF013190

ENGINE OPERATION 55
7
1. Trim rod
Tilt down
1. Release the tilt stopper from the set-
up position while slightly tilting up
outboard motor.
2. Operate the Power Trim & Tilt switch
and tilt the outboard motor down
until the motor touches to the thrust
rod.
The outboard motor can also be tilted up
and down using the switch provided on
the bottom cowl.
It is possible to tilt up or down whether or
not the main switch is "ON" or "OFF".
ENOM00940-1
Manual relief valve
If the battery is dead, and/or the power
tilt switch is inoperative open the manual
valve completely in the Manual direction.
This allows the outboard motor to be
tilted manually.
ENOW00872-1
Make sure the manual relief valve is closed
before operating the outboard motor. If the
manual relief valve is not closed, the out-
board motor will be tilted up when shifting in
reverse.
ENOW00873-1
Before opening the manual relief valve, make
sure nobody is under the outboard motor. If
the outboard motor is in the tilted upposi-
tion with the manual relief valve loosend, the
outboard motor will be tilted down suddenly.
1. Power
2. Manual
Manual relief valve specified torque:
3 N- - -m (2.2 ft lb, 0.3 kgf m)
1
ENOF02416-0
ENOF02417-0
WARNING
WARNING
1
2
ENOF00679-0

ENGINE OPERATION56
7
ENOM00068-A
ENOW00051-0
During shallow water operation, be careful
not to place your hand between the swivel
bracket and the clamp bracket. Be sure to
tilt the outboard motor down slowly.
ENOW00053-0
While in shallow water drive position, do not
operate the outboard motor in Reverse.
Operate the outboard motor at slow speed
and keep the cooling water intake sub-
merged.
ENOW00054-1A
Do not over tilt the outboard motor when
driving in shallow water, or air may be sucked
through water inlet, potentially leading to
engine overheating.
1. Water inlet
ENOM00069-A
Power Trim & Tilt type
1. Operate the Power Trim & Tilt switch
and tilt the outboard motor up into
desired shallow water running posi-
tion.
9. Shallow water operation
WARNING
CAUTION
CAUTION
1
ENOF01144-A
ENOF02437-0
DN UP
UP
DN
ENOF00067-2
UP
DN
ENOF00941-0

57
8
REMOVING AND CARRYING THE OUTBOARD MOTOR
ENOM00070-A
ENOW00006-1B
To avoid personal injury or damage of equip-
ment , make sure the allowable lifting capac-
ity of the hoist is at least twice the weight of
the outboard motor.
Do not allow the lift hook or chain from the
hoist to come in contact with any part of the
outbord motor during lifting.
ENOW00064-1
Engine may be hot immediately after opera-
tion and could cause burns if came in con-
tact. Allow engine to cool down before
attempting to carry the outboard.
1. Stop the engine.
2. Remove the top cowl.
3. Disconnect the fuel connector, the
remote control cables and the bat-
tery cords from the outboard motor.
4. Attach the hoist hooks to the engine
hanger.
5. Remove the outboard motor from
boat and completely drain the water
from the gear case.
ENOM00071-A
ENOW00933-0
Be sure to disconnect fuel connector except
when operating engine.
Fuel leakage is a fire or explosion hazard,
which can cause serious injury or death.
ENOW00065-1
Close air vent screw on fuel tank before car-
rying or storing outboard motor and fuel
tank, or fuel may leak, potentially catching
fire.
ENOW00968-1
Do not give a shock to an outboard motor
during transportation.
1. Removing the outboard
motor
WARNING
CAUTION
2. Carrying the outboard motor
WARNING
WARNING
CAUTION
ENOF02419-1

REMOVING AND CARRYING THE OUTBOARD MOTOR58
8
Keep the outboard motor in a vertical
position when carrying.
The optional outboard motor stand is
recommended for keeping the outboard
motor vertical both during transport and
storage.
ENOM00072-1A
ENOW00072-0
Trailering in the tilted position may cause
damage to the outboard motor, boat, etc.
ENOW00971-0
On applicable models remove the fuel con-
nector and fuel line except when operating
engine.
Fuel leakage is a fire or explosion hazard,
which can cause serious injury or death.
ENOW00068-0
Close air vent screw of fuel tank and fuel
cock before carrying or storing outboard
motor and fuel tank, or fuel may leak, poten-
tially catching fire.
ENOW00071- 0
The tilt support device supplied on your out-
board motor is not intended for towing. It is
intended to suppor t the outboard motor
while the boat is docked, beached, etc.
When transporting a boat on a trailer
with the outboard motor still attached,
disconnect the fuel line from the
outboard motor beforehand and keep
the outboard motor in the normal
running position or on a transom saver
bar.
Tiller handle type
While transporting outboard motor
attached to the boat on a trailer, properly
tighten the steering friction bolt to pre-
vent the outboard motor from moving
(page 60).
3. Trailering
CAUTION
WARNING
ENOF02421-0
WARNING
CAUTION
ENOF00075-1

REMOVING AND CARRYING THE OUTBOARD MOTOR 59
8
1. Ground clearance should be provided
sufficiently.
2. Transom saver bar
ENOW00067-0
Do not go under outboard motor tilted up
even if it is supported by suppor t bar, or
accidental fall of outboard motor could lead
to severe personal injury.
WARNING
21
ENOF00074-A

ADJUSTMENT 61
9
Side mount type
1. Throttle friction adjustment screw
2. Decrease
3. Increase
Top mount type
1. Throttle friction adjustment screw
2. Lighter
3. Heavier
ENOM00076-0
ENOW00076-1
zBe sure that the outboard motor is
secured to transom or service stand, or
accidental drop or fall of outboard motor
could lead to severe personal injury.
zBe sure to lock the outboard motor in the
tilt up position, or accidental fall of out-
board motor could lead to severe per-
sonal injury.
zDo not go under outboard motor in the tilt
up position and locked, or accidental fall
of outboard motor could lead to severe
personal injury.
ENOW00075-1
Inappropriate adjustment of trim tab could
cause steering difficulty. After installing or
readjusting trim tab, check if steering load is
even.
If straigh t- line cr uising cannot be
achieved, adjust the trim tab located
under the anti-ventilation plate.
zIf the boat veers toward the left, direct
the trim tab towards A (left from rear
of boat).
zIf the boat veers toward the right,
direct the trim tab towards B (right
from rear of boat).
1. Trim tab
ENON00022-A
Notes
zAfter adjustment securely tighten the
trim tab fixing bolt.
zCheck for looseness of the bolt and the
trim tab at regular intervals.
4. Trim tab adjustment
WARNING
1
23
ENOF00078-2
1
2
3
ENOF00942-0
WARNING
ENOF02449-0
1

62
10
INSPECTION AND MAINTENANCE
ENOM00077-1
Care of your outboard motor
To keep your outboard motor in the best
operating condition, it is very important
that you perform daily and periodic
maintenance as suggested in the mainte-
nance schedules as follows.
ENOW00077-1
zYour personal safety and that of your pas-
sengers depends on how well you main-
tain your outboard motor. Carefully read
all of the inspection and maintenance
procedures described in this section.
zThe maintenance intervals shown in the
checklist apply to an outboard motor in
nor mal use. If you use your outboar d
motor under severe conditions such as
frequent full-throttle operation, frequent
operation in brackish water, or for com-
mercial use, maintenance should be per-
formed at shorter intervals. If in doubt,
consult your dealer for advice.
zWe strongly recommend that you use only
genuine replacement parts on your out-
board motor. Damage to your outboard
motor arising from the use of other than
genuine parts is not covered under the
warranty.
CAUTION

INSPECTION AND MAINTENANCE 63
10
ENOM00079-0
Perform the following checks before and
after use.
ENOW00078-1
Do not use outboard motor if any abnormal-
ity is found during pre-operation check oth-
erwise it could result in severe damage to
the motor or severe personal injury.
1. Daily Inspection
WARNING
Item Points to Check Remedy
Fuel System
• Check the amount of fuel in the tank. Replenish
• Check for debris or water in the fuel filters. Clean or replace if
necessary
• Check the rubber hoses for fuel leakage. Replace if necessary
Fuel Tank Cap • Check for crack, leakage, damage in the fuel tank cap. Replace if necessary
• Check for leakage at full close. Replace if necessary
Engine Oil • Check the oil level. Fill oil
Electrical
Equipment
• Check that the main switch functions normally. Replace if necessary
• Check that the battery electrolyte level and specific gravity
are normal. Replenish or recharge
• Check for loose connections on the battery terminal. Retighten
• Check that the stop switch functions normally and make sure
the stop switch lock is secured.
Remedy or replace if
necessary
• Check cords for loose connections and damage. Correct or replace if
necessary
• Check the spark plugs for dirt, wear and carbon build-up. Clean or replace if
necessary
• Check the warning buzzer (one beep) and warning LED lamp
(ON for 1 secs.) when key is ON. Repair
Clutch and
Propeller Sys-
tem
• Check that clutch engages correctly when operating the shift
lever. Adjust
• Visually check propeller for bent or damaged blades. Replace if necessary
• Check the propeller nut is tightened and the split pin is in
correct position. Tighten or replace
Installation of
Motor
• Check all the bolts attaching the motor to the boat. Tighten
• Check the thrust rod installation. Replace if necessary
Power Trim &
Tilt • Check working of the tilt up and down of the motor. Repair
Cooling Water • After starting the outboard motor, make sure that water is
being discharged from the cooling water check port. Repair
Tools and
Spares
• Check that there are tools and spare parts for replacing spark
plugs, the propeller, etc.
• Check that you have the spare stop switch lock.
Order
Order
Steering
Devices • Check the operation of the steering handle. Repair

INSPECTION AND MAINTENANCE64
10
ENOM01823-0
Oil level checking
If the oil level is low, or too high, the life
of the engine will be shortened signifi-
cantly.
1. Stop the engine and place the out-
board motor in a vertical position.
2. Turn the top cowl hook levers to
unlock, lift and remove the top cowl.
3. After the engine has been shut off 5
minutes, remove the dipstick and
wipe oil off with a clean cloth.
4. Insert the dipstick to the hole com-
pletely.
5. Remove the dipstick. Oil level must be
between the upper limit and lower
limit shown on the dipstick.
6. If the oil level is below the lower limit,
add the oil to between the upper and
lower limit mark on the dipstick.
1. Filler cap
2. Dipstick
3. Filler port
1. Upper limit 4200 mL (4.4/3.7 US/Imp qt.)
2. Lower limit 2200 mL (2.3/1.9 US/Imp. qt.)
ENON00024-0
Note
The oil level should be checked when the
engine is cooled.
ENON00025-0
Note
Consult with an authorized dealer if the
engine oil is milky color, or appears con-
taminated.
ENOM00082-A
Engine oil replenishing
ENOW00972-0
zDo not add or mix different brands of
engine oil or grade with existing oil. In
case engine oil of other brand or grade is
added, drain all oil and ask dealer for
treatment.
zIn case other than engine oil such as gaso-
line is put in the oil chamber, empty the
chamber and ask dealer for treatment.
zWhen replenishing engine oil, be careful
not to allow entry of foreign matters such
as dust and water into oil chamber.
Other parts
• Make sure that steering handle and remote control is
functioning normally. Repair if necessary
• Check the anode for corrosion and deformation. Replace
Item Points to Check Remedy
1
3
2
ENOF02407-0
CAUTION
2
1
ENOF02432-0

INSPECTION AND MAINTENANCE 65
10
zWipe off engine oil well immediately if
spilled and dispose of it in accordance
with local fire prevention and environ-
ment protection regulations.
zDo not replenish engine oil over upper
limit. If overfilled, remove oil to upper
limit. If engine oil is over the upper limit, it
can leak potentially leading to engine
damage.
If the oil level is low, or at lowest mark,
add recommended oil to the middle dip-
stick mark.
ENOM00083-1
Washing outboard motor
ENOW00920-0
When washing the outboard motor, be care-
ful not to spray the water inside of the top
cowl, especially electrical components.
ENON00026-0
Note
It is recommended to check chemical
properties of water on which your out-
board motor is regularly used.
If outboard motor is used in salt water,
brackish water or water with a high acidic
level, use fresh water to remove salt,
chemicals or mud. And flush cooling
water passage af ter every cruising or
before storing outboard motor for long
time. Before flushing, remove the propel-
ler and the forward thrust holder.
ENOM00085-E
Flushing hose joint
ENOW00921-0
Do not operate the engine when flushing the
outboard motor with a hose joint as this can
cause damage to the outboard motor.
ENOW00922-0
To prevent the engine from starting when
you are near the propeller, remove the stop
switch lock.
1. Tilt down the outboard motor.
2. Remove the flushing connector cap
from the outboard motor, and screw
in the hose joint.
3. Connect a water hose. Turn on the
water and adjust the flow.
Continue flushing the outboard motor
for 3 to 5 minutes
4. After the flushing, be sure to reattach
the flushing connector cap.
5. Tilt up the outboard motor.
CAUTION
ENOF02420-0
CAUTION
CAUTION

INSPECTION AND MAINTENANCE66
10
1. Hose joint
ENOM00085-A
Flushing by test tank
ENOW00081-1
Do not start engine without removing pro-
peller, turning propeller out in the open may
lead to personal injury.
ENOW00082-0
Never start or operate the engine indoors or
in any space which is not well ventilated.
Exhaust gas contains carbon monoxide, a
colorless and odorless gas which can be fatal
if inhaled for any length of time.
ENOW00036-1A
When starting the outboard motor in the
test tank, make sure that:
1. Water level is at least 10 cm (4 in.) above
the anti-ventilation plate to avoid over-
heating of the engine.
2. Run at idling only
3. Remove the propeller
(See page 74)
1. Test tank
2. Water
3. Over 10 cm (4 in.)
ENOM00950-1
Fuse replacement
ENOW00923-1
Before replacing a fuse, disconnect the bat-
tery cable from the battery negative (-) ter-
min al first. Failur e to pro perly remove
battery cables may cause a short-circuit.
ENOW00924-0
Never use a fuse with a rating that exceeds
the specified rating as this could cause seri-
ous damage to the electrical system.
If the fuse is blown, try to determine the
cause and respond to the problem as
simply replacing the fuse will likely be
blown again. If you are unable to respond
to the cause or the fuse continues to
blow, request an authorized Tohatsu
dealer for inspection.
WARNING
WARNING
CAUTION
1
ENOF02425-0
CAUTION
CAUTION
1
3
2
ENOF00863-0

INSPECTION AND MAINTENANCE 67
10
ENOM01816-0
1. Stop the engine and disconnect the
baterry cable from the battery (-)
negative.
2. Turn the top cowl hook levers to
unlock, lift and remove the top cowl.
3. Remove the grommet from the elec-
tric bracket cover.
4. Remove the fuse cover.
5. Remove the fuse and check it. If the
fuse is blown, replace to the supplied
spare fuses in the spare fuse holder.
1. Grommet
2. 20A
3. 20A
4. 30A
5. Blown fuse
2 3 42 3 4
5
1
ENOF02426-0

INSPECTION AND MAINTENANCE68
10
ENOM01106-1
It is important to inspect and maintain your outboard motor regularly. Make sure to per-
form each service at interval specified in the chart below. Maintenance intervals are
determined by the number of hours outboard motor has been used or number of
months, whichever comes first.
2. Periodic Inspection
Description
Inspection intervals
Inspection procedure Remarks
First 20
hours or 1
month
Every 50
hours or 3
months
Every 100
hours or 6
months
Every 200
hours or 1
year
Every 400
hours or 2
year
Fuel System
Fuel filter z {/ Check and clean or Replace if
necessary. (See page 72)
High pressure
fuel filter Replace (Every 200 hours or 2
years)
High pressure
fuel hose z/{ z/{ Check / Replace if necessary
Fuel tank z/{ z/{ Check and clean (See
page 72)
Fuel tank cap z/{ z/{ Check/Replace if necessary.
Fuel pump {Check/Replace if necessary.
Fuel pressure {Check
Hose z/{ z/{ Check/Replace if necessary.
Ignition
System
Spark plug zCheck and clean. (See
page 76)
0.8-0.9 mm
(0.031-0.035 in)
Spark plug cap/High
tension cord { { Check/Replace if necessary.
Starting
System
Starter motor {Check
Battery/Cable
connection { { Check
Engine
Engine oil z
Replace
z
Replace Replace. (See page 64)
Approx 4200 mL
(4.44 US qt.)
with filter
replacement)
Oil filter {
Replace
{
Replace
Replace every 200 hrs or 1
years (See page 71)
Valve Clearance {Check and adjust
Timing belt {Check/Replace if necessary.
Compression
pressure {Check
Combustion
chamber {Clean
Thermostat {Check / Replace if necessary
*"z" This procedure can be performed by end user.
*"{" This procedure shall be carried out by the dealer.

INSPECTION AND MAINTENANCE 69
10
*"z" This procedure can be performed by end user.
*"{" This procedure shall be carried out by the dealer.
ENON00030-1
Note
It is highly recommended that your outboard motor to go through complete inspection at 300
hours of use.
ENOM00091-A
Engine oil replacement
ENOW00091-1
You may be injured due to high engine tem-
peratures if you fill engine oil just after oper-
ation. Engine oil should be changed after the
engine has been cooled.
ENOW00092-1
z Do not overfill engine oil, or engine oil
could leak and/or engine could be dam-
aged. If engine oil level is over upper limit
marks of dip stick, drain oil to level lower
than upper limit.
z Be sure that outboard motor is upright
when checking or changing oil.
Lower Unit
Propeller z z Check/Replace if necessary.
(Seepage 74)
Shear pin/Split
pin z z Check/Replace if necessary
Gear oil z
Replace zz
Replace
Change and replace. (See
page 73)
Approx.1000 mL
(34 fl.oz.)
Water strainer z z Check
Water pump impeller z {/ {
Replace Check/Replace if necessary.
Water pump
housing*1 {Check/Replace if necessary.
Shift/
Throttle
Throttle cable zCheck/Replace if necessary.
Throttle link { { Check and adjust.
Shift cable {Check/Replace if necessary.
Shift link { { Check and adjust.
Power trim & tilt z/{ z/{ Check & replenish
Warning system {Check
Stop switch z z Check
Meters { { Check
Bolt, Nut { { Retighten
Sliding Part/Rotation part z z Apply grease. (See page 81)
Grease nipple z z Pump in grease
Outer equipment z z Check
Anode (engine) {Check/Replace if necessary.
Anode (except for engine) z {/ Check/Replace if necessary.
Top cowl/Ratch z {/ Check and adjust.
Description
Inspection intervals
Inspection procedure Remarks
First 20
hours or 1
month
Every 50
hours or 3
months
Every 100
hours or 6
months
Every 200
hours or 1
year
Every 400
hours or 2
year
CAUTION
CAUTION

INSPECTION AND MAINTENANCE 71
10
12. Start the engine and idling for 5 minu-
ets, then check for no oil leaks and no
warning indicate.
1. Oil filler cap
2. Dipstick
3. Filler port
1. Upper limit 4200 mL (4.4/3.7 US/Imp qt.)
2. Lower limit 2200 mL (2.3/1.9 US/Imp. qt.)
ENON00920-0
Note
Use only recommended engine oil (See
page 29)
ENOW00925-0
Wipe off engine oil well immediately if spilled
and dispose of it in accordance with local
fire prevention and environment protection
regulations.
ENON00031-0
Note
z If any amount of water is found in
engine oil, making it milky white, consult
dealer.
z If engine oil is contaminated with fuel,
emitting strong fuel smell, consult
dealer.
z Some oil dilution is normal if engine is
idled or trolled for long periods, espe-
cially in cooler water temperatures.
ENOM00092-A
Oil filter replacement
ENOW00091-1
You may be injured due to high engine tem-
peratures if you fill engine oil just after oper-
ation. Engine oil should be changed after the
engine has been cooled.
ENOW00926-0
Wipe off engine oil well immediately if spilled
and dispose of it in accordance with local
fire prevention and environment protection
regulations.
1. Drain oil from the engine.
2. Place a rag or towel below the oil fil-
ter to absorb any spilled oil.
3. Unscrew old filter by turning the filter
to counter-clockwise.
Oil volume needed for complete oil replacement
With oil filter
replacement
Without oil filter
replacement
Approximately 4200 mL
(4.4/3.7 US/Imp. qt.)
Approximately 4000 mL
(4.2/3.5 US/Imp. qt.)
1
3
2
ENOF02407-0
2
1
ENOF02432-0
CAUTION
CAUTION
CAUTION

INSPECTION AND MAINTENANCE72
10
4. Clean the mounting base. Apply film
of clean oil to O-ring.
Do not use grease.
Install oil filter and tighten it to specified
torque by using oil filter wrench.
Oil filter torque:
18 N·m (13 ft · ·lb, 1.8 kgf m)
ENON00028-A
Note
If a torque-wrench is not available when
you are fitting a oil filter, a good estimate
of the correct torque is 3/4 to 1 a turn past
finger-tight. Have the oil filter adjusted to
the correct torque as soon as possible with
a torque-wrench.
1. Oil filter wrench
P/N 3AC-99090-0
P/N 3AC99090M
(US. CANADA Only)
1. Oil filter
2. Fuel filter
ENOM00093-A
Fuel filters and fuel tank cleaning
ENOW00093-1
Gasoline and its vapor is very flammable and
can be explosive.
zDo not start this procedure while engine
is operating or while engine is hot.
zPlace fuel filter away from every source of
ignition such as sparks or open flames.
zIf gasoline is spilled, wipe up immediately
and dispose according to the local regula-
tions.
zInstall fuel filter with all related parts in
place, or fuel leak could occur, leading to
catching fire or explosion.
zCheck fuel system regularly for leakage.
zContact authorized dealer for fuel system
services. Services by unqualified person
could lead to engine damage.
Fuel filters are provided inside the fuel
tank and engine.
ENOM00094-0
Fuel filter (for engine)
1. Check in the cup for water and
debris.
1. Body
2. O-ring
1
ENOF00094-0
1
2ENOF02428-0
WARNING
1
2
3
4
5
6
7
ENOF01243-0

INSPECTION AND MAINTENANCE 73
10
3. O-ring
4. Filter
5. Float
6. Cup
7. Indication of Fuel Flow.
2. If present, disconnect hoses from the
fuel connector (male) and the fuel
pump.
3. Remove the cup, filter and O-rings
from the fuel filter body.
4. Check the wear and clogging for each
parts, and replace if necessary.
5. Remove fuel and any water or debris
from the cup, filter and hoses.
6. Reassemble all parts.
ENOM00096-A
Fuel filter (for fuel tank)
Water or dirt in the fuel tank will cause
engine performance problems.
Check and clean the tank at specified
times or after the outboard motor has
been stored for a long period of time
(over three months).
1. Remove four screws to remove the
Fuel Pick-Up.
2. Clean the fuel filter and replace the
gasket.
3. Reassemble all parts.
1. Fuel pick-up
2. Filter
ENOM00098-A
Gear oil replacement
ENOW00076-1
zBe sure that the outboard motor is
secured to transom or service stand, or
accidental drop or fall of outboard motor
could lead to severe personal injury.
zBe sure to lock the outboard motor in the
tilt up position, or accidental fall of out-
board motor could lead to severe per-
sonal injury.
zDo not go under outboard motor in the tilt
up position and locked, or accidental fall
of outboard motor could lead to severe
personal injury.
1. Tilt down the outboard motor.
2. Remove the oil plugs (lower and
upper), and completely drain the gear
oil into a pan.
WARNING
2
1
ENOF00926-1

INSPECTION AND MAINTENANCE74
10
3. Insert the oil tube nozzle into the
lower oil plug hole, and fill with gear
oil by squeezing the oil tube until oil
flows out of the upper plug hole and
bubbles is disappeared to remove the
air.
ENON00033-1
Note
Use genuine gear oil or the ones recom-
mended (API GL-5: SAE #80 to #90).
Required volume: approx. 1000 mL.
4. Install the upper oil plug, and then
remove oil tube nozzle and install the
lower oil plug.
Oil plug specified tightening torque
4N·m (3 ft· ·lb, 0.4 kgf m)
ENOW00095-0
Do not reuse oil plug gasket. Always use new
gasket and tighten oil plug properly to pre-
vent entry of water into lower unit.
ENOW00928-1
If gear oil is spilled, wipe off immediately and
dispose according to the local regulations.
ENON00032-1
Note
If the gear oil color appears to be milky
color, contact your dealer.
ENOM00086-A
Propeller replacement
ENOW00084-1
zDo not install or remove propeller on the
outboard motor with spark plug caps
attached, shift in forward or reverse,
main switch at other than “OFF”, engine
stop switch lock attached to the switch,
and starter key attached, or engine could
ENOF00927-0
ENOF00100-A
CAUTION
CAUTION
WARNING
ENOF00101-A

INSPECTION AND MAINTENANCE 75
10
accidentally start leading to serious per-
sonal injury. Disconnecting battery cable
is recommended (if equiped).
zThe propeller edge is thin and sharp. Wear
the gloves while installing or removing to
protect your hands.
ENOW00086-1
zDo not install propeller without thrust
holder, or propeller boss could be dam-
aged.
zDo not reuse split pin.
zAfter installing split pin, spread bend both
end of the pin apart to lock propeller in
place.
A worn-out or bent propeller will lower
the motor's performance, and cause
engine trouble.
1. Put a piece of wood block between
propeller blade and anti-ventilation
plate to hold propeller.
2. Remove the split pin, propeller nut
and washer.
3. Remove the propeller and thrust
holder.
4. Apply waterproof grease to the pro-
peller shaft before installing a new
propeller.
5. Install the thrust holder, propeller,
stopper, washer and propeller nut
onto the shaft.
1. Propeller
2. Thrust holder
3. Bush
4. Stopper
5. Washer
6. Nut
7. Split pin
6. Tighten the propeller nut to specified
torque and align one of the grooves
with propeller shaft hole.
Propeller nut torque:
35 N·m
(25 ft· ·lb, 3.5kgf m)
7. Install a new split pin into the nut hole
and bend both ends of pin apart to
lock propeller in place.
CAUTION
ENOF00084-B
1
2
4
6
5
7
3
ENOF01336-0
ENOF00084-E

INSPECTION AND MAINTENANCE76
10
ENOM00087-D
Spark plugs replacement
ENOW00087-1
zDo not reuse spark plug, if the insulation
is damaged or sparks can leak through
crack, potentially leading to electric
shock, explosion and/or fire.
zDo not touch spark plugs immediately
after stopping engine as they will be hot
and could cause severe burns if touched.
ENOW00929-A
zUse only the recommended spark plugs.
Spark plugs which have an different heat
range may cause engine damage.
zDo not clean electrodes of iridium spark
plug. If it is contaminated with carbon
deposit or dirt, replace with a new one.
zDo not adjust the plug gasp, if it is out of
specification, replace with a new one.
If the spark plug(s) is fouled, has carbon
buil d up , or is worn , it sh ould be
replaced.
1. Stop the engine.
2. Remove the top cowl.
3. Remove the spark plug caps.
4. Remove the spark plugs by turning it
counter-clockwise, using a 5/8" (16
mm) socket wrench and handle that
are provided in the tool bag.
5. Inspect the spark plug. Replace the
spark plug with wear on electrode
and if the insulators are cracked or
chipped.
6. Measure the spark plug electrode gap
with a wire type feeler gauge. The gap
should be 0.8-0.9 mm (0.031-0.035
in). If the gap is out of specification,
replace the spark plug with a new one
Use spark plug ; NGK LKR6E
1. Electrode
2. Spark gap (0.8–0.9 mm, 0.031–0.035 in)
7. Install the spark plug and turn it care-
fully to avoid cross-threading.
8. Tighten the spark plug to the speci-
fied torque.
ENON00028-1
Note
zSpark plug tightening torque:
18.0 N·m (13.3 ft·lb) [1.84 kgf·m]
If a torque-wrench is not available when
you are installing a spark plug, tighten it 1/4
to 1/2 a turn past finger-tight. Have the
spark plug adjusted to the correct torque
as soon as possible with a torque-wrench.
WARNING
CAUTION
12
ENOF00085-0

INSPECTION AND MAINTENANCE 77
10
ENOM00088-1A
Anode replacement
A sacrificial anode protects the outboard motor from galvanic corrosion. Anode is
located on the gear case, cylinder etc.. When the anode is eroded more than 1/3 of
original size, replace it.
ENON00029-1
Notes
zNever grease or paint the anode.
zAt each inspection, re-tighten all the anode attaching bolts. Those bolts may loosen if the
anodes are corroded.
ENOF02429-0

INSPECTION AND MAINTENANCE78
10
ENOF02434-0

INSPECTION AND MAINTENANCE 79
10
ENOM01827-0
Ground wire checking
The ground wires described below are
making electrically connect between
moving parts and sacrificial anodes to
prevent galvanic corrosion.
Inspect the wires and their terminals
periodically. If there is any damage,
replace the ground wire.
ENOM01824-0
Power Trim & Tilt fluid checking
ENOW00088-0
zBe sure that outboard motor is secured to
transom or service stand, or accidental
drop or fall of outboard motor could lead
to severe personal injury.
zBe sure to lock outboard motor if it is
tilted up, or accidental fall of outboard
motor could lead to severe personal
injury.
zDo not go under outboard motor tilted up
and locked, or accidental fall of outboard
motor could lead to severe personal
injury.
ENOW00973-0
Do not unscrew the filler cap with the out-
board motor tilted down. Pressurized fluid in
the reservoir tank may spurt out.
Check the fluid level in the reservoir tank
while the tank is kept in a vertical posi-
tion.
1. Tilt the outboard motor up and lock
the tilt with the tilt stopper.
2. Remove the fluid cap by turning
counter-clockwise, then check if the
fluid level reaches the bottom line of
the fill hole.
1. Filler cap
2. Fluid level
ENOF02447-0
ENOF02448-0
WARNING
CAUTION
1
2
ENOF01340-A

INSPECTION AND MAINTENANCE 81
10
ENOM00960-0
Grease point
Apply waterproof grease to the parts shown below.
ENOF02431-1

INSPECTION AND MAINTENANCE82
10
ENOM00100-A
ENOW00934-0
zBe sure to disconnect fuel connector
except when operating engine.
zFuel leakage is a fire or explosion hazard,
which can cause serious injury or death.
ENOW00097-0
Be sure to use cloth to remove fuel remain-
ing in the cowl and dispose of it in accor-
dan ce wi th local fi r e pr even ti on an d
environment protection regulations.
ENOW00096-0
Before servicing the motor for storage:
zRemove the battery cables.
zRemove the spark plug caps from the
spark plugs.
zDo not run the motor out of the water.
Before you put your outboard motor in
storage, it is a good opportunity to have
it serviced by your dealer.
Be sure to use fuel stabilizer while run-
ning the motor be fore storage. (See
page 83)
ENOM00101-A
Engine
1. Wash the engine exterior and flush
the cooling water system thoroughly
with fresh water. Drain the water
completely.
Wipe off any surface water with an
oily rag.
2. Use a dry cloth to completely wipe off
water and salt from the electrical
components.
3. Drain all fuel from the fuel hoses, fuel
pump, fuel filter (See page 72) and
vapor separator (See page 83), and
clean these parts.
Keep in mind that if gasoline is kept in
the vapor separator for a long time,
gum and varnish will develop, causing
the float valve to stick, restricting the
fuel flow.
ENOW00930-1
zBe sure to remove stop switch lock to
prevent the spark plug(s) from igniting.
zPut a cloth to spark plug hole and wipe up
any spilled engine oil, when cranking the
outboard motor.
4. Change the engine oil (See page 69).
5. Change the gear oil in the gear case
(See page 73).
6. Apply grease to grease point (See
page 81).
7. Place the outboard motor in the ver-
tical position under a dry condition.
3. Off-season storage
WARNING
WARNING
CAUTION
WARNING

INSPECTION AND MAINTENANCE 83
10
ENOW00969-0
When transporting or storing the outboard
motor, it places only in a vertical position
(normal running position).
ENOM00950-0
Adding a fuel stabilizer
When adding a fuel stabilizer additive
(commercially available), first fill the fuel
tank with fresh fuel. If the fuel tank is only
partially filled, air in the tank can cause
the fuel to deteriorate during storage.
1. Before adding fuel stabilizer additive,
dr ai n the v apor se pa ra t or ( See
page 83).
2. Follow the instructions on the label
when adding the fuel stabilizer addi-
tive.
3. After adding the additive, let the out-
board motor run in the water for 10
minutes to make sure any old fuel in
the fuel system has been completely
replaced by the fuel with additive.
4. Turn the engine OFF
ENON00945-0
Note
Over time, oxidation of gasoline can form
buildup of harmful solids called gums.
Water and impurities in the fuel system
can cause corrosion. To stabilize the fuel
and prevent oxidation, gum buildup, and
corrosion throughout the boating season,
recommended to add a good fuel stabilizer
to the fuel tank after each fill up.
ENOM00970-0
Fuel system draining
ENOW00028-A
For details on handling fuel, contact an
authorized dealer.
Fuel and fuel vapors are extremely flamma-
ble and can be explosive.
z If fuel is spilled, wipe it up immediately.
zKeep the fuel tank well away from sources
of ignition, e.g. sparks or open flames
zPerform all work outdoors or in a well
ventilated place.
ENOW00097-0
Be sure to use cloth to remove fuel remain-
ing in the cowl and dispose of it in accor-
da n c e w it h l oc al f ir e pr ev en ti on an d
environment protection regulations.
ENOM01824-0
1. Disconnect the fuel hose from the
outboard motor.
2. Turn the top cowl hook levers to
unlock, lift and remove the top cowl.
3. Pull out the vapor separator drain
hose to outside the bottom cowl.
4. Place an appropriate fuel container
under the drain hose end.
CAUTION
ENOF02421-0
WARNING
WARNING

INSPECTION AND MAINTENANCE84
10
5. Remove the hose clip and the drain
plug by plier to drain the fuel from the
vapor separator.
6. When thoroughly drained, put back
the drain plug and the hose clip
securely.
7. Check the drained fuel for the pres-
ence of water or other contaminants.
Consult your dealer, If either present.
Service is required.
1. Drain hose
ENOM00102-0
Battery
ENOW00931-A
zPlace the battery away from any source of
fir e, sp ar ks and open flames such as
burners or welding equipment.
zPlace the battery away from fuel tank.
Accidental sparks of battery may cause
explosion of fuel.
1. Disconnect the battery cables and be
sure to remove the negative terminal
first.
2. Wipe off any chemical deposits, dirt,
or grease.
3. Apply grease to the battery terminals.
4. Charge the battery completely before
storing it for the winter.
5. Recharge the battery once a month
to prevent it from discharging and the
electrolyte from deteriorating.
6. Store the battery in a dry place.
ENOM01825-0
The following steps must be taken when
first using the engine after off-season
storage.
1. Check that the shift and throttle
function properly. (Be sure to turn the
propeller shaft when checking the
shift function or else the shift linkage
may be damaged.)
2. Check the electrolyte level, and mea-
sure the voltage and specific gravity
of the battery.
3. Check that the battery is secure and
the batte ry cable s ar e pr o perly
installed.
4. Change the engine oil (See page 69).
5. Fill fuel tank completely.
6. Start the engine and warm up the
engine for 3 minutes in the “NEU-
TRAL” position.
7. Run the engine for 5 minutes at the
slowest speed.
WARNING
1
ENOF02438-0
4. Pre-season check
Specific Grav-
ity at 20°C
Terminal
Voltage (V)
Charge
Condition
1.120 10.5 Fully discharged
1.160 11.1 1/4 charged
1.210 11.7 1/2 charged
1.250 12 3/4 charged
1.280 13.2 Fully charged

INSPECTION AND MAINTENANCE 85
10
8. Run the engine for 10 minutes at half
throttle. The oil used for storage
inside the engine will be circulated
out to assure optimum performance.
ENOM01811-0
ENOW00098-0
Do not attempt to start submerged outboard
motor immediately after it is recovered, or
engine could be severely damaged.
After taking your outboard motor out of
the water, immediately take it to your
dealer.
ENOM00106-1
If you moor your boat in cold weather at
temperatures below 0°C (32°F), water
residue in water pump may freeze and
may damage the pump, impeller, etc. To
avoid, submerge the lower half of the
outboard motor into the water.
ENOM00107-A
ENOW00935-0
Striking the sea bottom or an underwater
object may severely damage the outboard
motor.
Follow the procedure below and consult
a dealer as soon as possible.
1. Stop the engine immediately.
2. Check the control system, gear case,
boat transom etc.
3. Return to the nearest harbor slowly
and carefully.
4. Consult a dealer check the outboard
motor before operation again.
ENOM00121-0
When operating the outboard motors in
reverse at more than the lowest speed,
be sure that all engines are running.
If any engine has stopped, be sure to tilt
the outboard motor up and keep its pro-
peller out of the water.
Otherwise, water could enter the engine
and cause damage to it.
5. Submerged outboard motor
CAUTION
6. Cold weather precautions
7. Striking underwater object
CAUTION
8. Operation with multiple
outboard motors
ENOF01145-0

86
11
TROUBLESHOOTING
ENOM00109-0
If you encounter a problem, check the list below to determine the cause and to take the
proper action.
An authorized dealer will always be happy to provide any assistance and information.
Engine will not start.
Engine stalls immediately after starting
Defective idling
Poor acceleration
Engine speed is very high causing
high speed ESG to operate.
Engine speed is very low, causing
low speed ESG to operate.
Boat cannot run at high speed.
Engine overheats.
Battery is not charged.
Starter motor will not operate.
Power tilt will not operate.
Warning lamp A "ON"/"Flash"
Warning lamp B "Flash"
Warning lamp C “Flash”
Three warning lamps “Flash”
Warning buzzer “ON”
Possible cause
Fuel and Lubrication Systems
z z Fuel level is low in the tank.
z z z z z z z Fuel system connection is
incomplete.
z z z z z z z Fuel system sucks air.
z z z z z z z Fuel pipe is twisted.
z z z z z z z Cap vent is closed.
z z z z z z z Fuel filter, fuel pump or injector is
clogged.
z z z z z z z Performance of fuel pump or vapor
separator is deteriorated.
z z z z z Low quality fuel is used
zPrimer bulb is clogged.
z z z z z z Low quality engine oil is used.
z z Engine oil quantity excessive
(emissions of white smoke).
z*z z*Engine oil is lacking (Oil pressure
switch operates).
z*z z*Oil filter is clogged (Oil pressure
switch operates).
z*z z*Oil pump is defective (Oil pressure
switch operates).
Produkt Specifikationer
Mærke: | Tohatsu |
Kategori: | Påhængsmotor |
Model: | MFS90A |
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