Bowflex C7 Manual

Bowflex Cykel træner C7

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8027898.090122.B

Service Manual

Table of Contents

Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S.

otherwise protected by common law in the United States and other countries. Other trademarks are the property of their respective owners. |

ORIGINAL DOCUMENT - ENGLISH VERSION ONLY

8027899.090122.B

Bowex™ C7 Bike Service Manual

™

Section Code Section Page Number

1 Important Safety Instructions 2

1 Safety Warning Labels and Serial Number 3

1 FCC Compliance 3

1 Specications 4

1 Maintenance 5

1 Moving/Storing the Machine 6

1 Leveling the Machine 6

1 Emergency Stop 6

1 Console 7

1 Heart Rate Armband 8

1 Adjustments 9

1 Locking the Flywheel for Storage 10

1 Troubleshooting 11

1 Demonstration Mode 12

1 Maintenance Parts Exploded View 13

1 Replacement Procedure Skill Level 14

Mechanical Procedures

2 Adjust the Belt Tension 15

3 Adjust the Seat Clamp Position 19

4 Calibrating the Magnetic Resistance Sensor and Brake 24

Part Replacement

5 Replace the Emergency Brake Pad 33

6 Replace the Brake / Resistance Knob Assembly 43

7 Replace the Crank Arm 46

8 Replace the Drive Belt 50

9 Replace the Drive Belt Cover 65

10 Replace the Fender 68

11 Replace the Flywheel Assembly 70

12 Replace the Flywheel Tensioners 85

13 Replace the Handlebar and Seat Post Bushing 89

14 Replace the PCBA Board 95

15 Replace the Pedals 98

16 Replace the Power Inlet 101

17 Replace the Resistance Sensor and Sensor Magnet 106

18 Replace the Speed Sensor 116

19 Replace the Wiring Harness 132

SAFETY WARNING LABELS AND SERIAL NUMBER

FCC Compliance

Changes or modications to this unit not expressly approved by the party responsible for compliance could void the user’s

authority to operate the equipment.

This product complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful

interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Note: This product has been tested and found to comply with the limits for a Class B digital device, pursuant to CFR47 Part 15 Subpart B of the FCC

Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates

radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation. In the unlikely event that this equipment does cause harmful

interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct

the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Consult the dealer or an experienced radio/TV technician for help.

This product complies with the European Radio Equipment Directive 2014/53/EU.

WARNING!

• Injury or death is possible if caution is not used while using this

machine.

• Keep children and pets away.

• Read and follow all warnings on this machine.

• Refer to the Owner’s Manual for additional warnings and safety

information.

• The heart rate displayed is an approximation and should be used for

reference only.

• Not intended for use by anyone under 14 years of age.

• The maximum user weight for this machine is 330 lbs (150 kg.).

• This machine is for home use only.

• Consult a physician prior to using any exercise equipment.

(The Warning label is only available in English and French Canadian on

machines sold in the US and Canada.)

Product specication

Serial number

Console

Serial number

Select the area where you are going to set up and

operate your machine. For safe operation, the location

must be on a hard, level surface. Allow a workout area

of a minimum 1.8 m x 1.2 m (72 in x 45 in).

SPECIFICATIONS

Maximum User Weight: 150 kg (330 lb.)

Machine Weight without Dumbbells: 50.4 kg (111.1 lb.)

Weight of Dumbbells (supplied in U.S./Canada): 2.7 kg (6 lb.)

Total Surface Area (footprint) of equipment: 6599 cm2 (1025 in2)

Power Requirements

(Power Adapter):

Input Voltage: 100-240V AC, 50-60Hz, 0.5A

Output Voltage: 12V DC, 5A

(Arm Band - supplied in U.S./Canada): Rechargeable lithium battery

DO NOT dispose of this product as refuse. This product is to be recycled. For proper

disposal of this product, please follow the prescribed methods at an approved waste

center.

54 cm

(21.3 in)

122.2 cm

(48.1 in)

146 cm

(57.5 in)

1.8 m (72 in)

1.2 m

45 in

0.6 m

24 in

0.6 m

24 in

Console Display

Status LED

Console

Speaker Speaker

A Wi connection is required to use your Bowex™ machine. If you do not have a Wi connection available, contact

your Bowex™ Representative immediately for further assistance. A JRNY™ membership is required for the JRNY™

experience – see www.bowex.com/jrny for details.

Status LED

The Status LED shows if the Console is activated and starting up/operating correctly (LED is on), or if the Console is

experiencing an error (LED blinks 3 times). To reset the Console during an error, disconnect the power to the machine for

30 seconds and reconnect it.

Workout with Other Fitness Apps

This tness machine has integrated Bluetooth® connectivity which allows it to work with a number of tness apps. For our

latest list of supported apps, please visit: www.nautilus.com/partners

Bluetooth® Heart Rate Enabled

Your tness machine is equipped to be able to receive a signal from a Bluetooth ® Heart Rate (HR) Monitor. Follow the

instructions provided with your Bluetooth® HR monitor.

If you have a pacemaker or other implanted electronic device, consult your doctor before using a Bluetooth ®

strap or other Bluetooth® heart rate monitor.

Note: Be sure to remove the protective cover (if provided) from the Heart Rate Sensor before use.

Bluetooth® Heart Rate Armband

Your tness machine is provided with a Bluetooth® Heart Rate Armband. When the

Bluetooth® Heart Rate Armband is connected, the Console will display the Bluetooth ®

Connected icon.

If you have a pacemaker or other implanted electronic device, consult your

doctor before using a Bluetooth® armband or other Bluetooth® heart rate

monitor.

The Heart Rate Armband should be worn on the upper portion of your forearm, with the Heart Rate Sensor to the inside of

your forearm. It should be snug enough not to move around on your arm, but not so tight that it restricts blood circulation.

Note: Be sure to remove the protective cover from the Heart Rate Sensor

before use.

1. Put the Bluetooth ® Heart Rate Armband onto the upper portion of your

forearm.

2. Push the On/O󰀨 LED button on the Heart Rate Armband to activate it. The

LED will ash blue quickly, indicating that the armband has been activated.

3. The LED will ash blue slowly when a heart rate is detected. The Blue-

tooth® Connected icon will activate on the Console when connected. You are ready to workout.

At the end of your workout, push the On/O󰀨 LED button to disconnect and deactivate your Heart Rate Armband.

If you press the On/O󰀨 LED button and the LED ashes red

several times, the battery is low and should be charged. To

charge the Bluetooth®

Heart Rate Armband, connect the

Charging Cable to the Charging Terminals on the inside of the

Sensor. Connect the Charging Cable to a powered USB Port.

The LED will ash red and green while charging. When fully

charged, the LED will be green continuously.

USB Connector

Charging Terminals

Heart Rate Sensor

Armband

Charging Cable

On/O󰀨 LED

button

2. Push the cleat down and forward to engage the Pedal.

3. Repeat for the other foot.

4. Practice engaging and disengaging from the Pedals before starting your workout.

To disengage (release) the cleats from the pedals, push the heels outward and lift.

If the body weight of a user is very low, the user may have diculty with operation of the

engagement/release mechanism in the Pedals. It may be necessary to decrease the

retention force of the mechanism. To adjust the retention:

1. Locate the opening in the rear of the Pedal for access to the adjustment bolt. It is be-

tween the 2 screws that attach the Foot Restraint to the Pedal.

2. Use a 3mm hex wrench to turn the adjustment bolt. To decrease the retention, turn it left

(counterclockwise). To increase the retention, turn it right (clockwise).

Handlebar Adjustment

To adjust the handlebar position:

1. Loosen the Handlebar Post Adjustment Handle on the Handlebar Post as you hold the

upright post to prevent it from dropping. Adjust the Handlebar to the desired height.

Do not lift the Handlebar Post above the “STOP” mark on the Handlebar Post.

2. Tighten the Handlebar Post Adjustment Handle to secure the Handlebar. Be sure that the

handle is fully tightened. Pull the handle out and turn so that it points down, then release.

NOTICE: Do not cut or pinch the Cables.

3. To move the Handlebar closer to, or away from the seat, loosen the Handlebar Slider

Adjustment Handle. Slide the Handlebar to the desired position and tighten the Handlebar

Post Adjustment Handle to secure the Handlebar. Be sure that the handle is fully tightened.

Pull the handle out and turn so that it points forward, then release.

Note: If the handle cannot turn due to contact with another part, pull the handle, turn and push it

back in to reposition it. Continue turning as needed.

Locking the Flywheel for Storage

When the machine is not in use, be sure to lock the Flywheel with the Emergency Brake/Resistance Adjustment Knob.

To lock the Flywheel, turn the Emergency Brake/Resistance Adjustment Knob clockwise until it encounters an increase in

resistance. Then rotate the Emergency Brake/Resistance Adjustment Knob another 1/2 turn clockwise. The Flywheel is

now locked. The ywheel should be locked for storage of the machine.

For safe storage of the machine, remove the power supply and place in a secure location. Tighten the

Brake/Resistance Adjustment Knob as described until the Flywheel is locked. Place the machine in a secure

location away from children and pets.

With the Flywheel locked, the level of resistance will be out of the range of operation displayed by the Console. Do not

use the machine with the level of 0% - 100% resistance outside of the range. This will damage the ability to quickly stop

the Flywheel during an emergency, and the effectiveness of securing the bike for storage. Turn the E mergency Brake/

Resistance Adjustment Knob until the LEVEL displayed on the Console is less than 100%. The resistance is now in the

designed range of operation for the bike.

Troubleshooting

Condition/Problem Things to Check Solution

No display/partial display/unit

will not turn on

Check electrical (wall) outlet Make sure unit is plugged into a functioning wall outlet.

Check connection at front of unit Connection should be secure and undamaged. Make sure the adapter is fully

plugged into the power inlet connector. Replace adapter or connection at unit

if either are damaged.

Check data cable integrity All wires in cable should be intact. If any are visibly crimped or cut, replace

cable.

Check data cable

connections/orientation

Be sure cable is connected securely and oriented properly. Small latch on

connector should line up and snap into place.

Check console display for

damage

Check for visual sign that console display is cracked or otherwise damaged.

Replace Console if damaged.

Console Display If Console only has partial display and all connections are ne, replace the

Console.

If the above steps do not resolve the problem, contact Customer Service (if

inside US/Canada) or your local distributor (if outside US/Canada).

Speed displayed is not accurate Check Speed Sensor Magnet

position

Speed Sensor Magnet should be in place on Flywheel.

Speed displayed is always “0”/

stuck in Pause mode

Data cable Make sure the data cable is connected to the Console from the main frame

assembly.

Speed Sensor Make sure the data cable is connected to the Speed Sensor.

No Speed/RPM reading Check data cable integrity All wires in cable should be intact. If any are cut or crimped, replace cable.

Check data cable connections/

orientation

Be sure cable is connected securely and oriented properly. Small latch on

connector should line up and snap into place.

Check Speed Sensor Assembly Speed Sensor Assembly should be connected to data cable. Realign sensor

if necessary. Replace if there is any damage to the sensor or the connecting

wire.

Unit operates but Bluetooth

Heart Rate (HR) not displayed

Bluetooth

Heart Rate Sensing

Device (Armband provided with

U.S./Canada machines)

Make sure device is directly against skin and device is on.

Bluetooth

Heart Rate Sensing

Device Batteries

If device has replaceable batteries, install new batteries. Make sure batteries

are charged, if applicable.

Interference Try moving unit away from sources of interference (TV, Microwave, etc).

Connected to previous user The Console may be still connected to the previous user. Push Connect

Bluetooth

button to disconnect from them/ connect to your Heart Rate

Sensing Device.

Unit operates but Bluetooth

displayed incorrectly

Connected to previous user The Console may be still connected to the previous user. Push Connect

Bluetooth

button to disconnect from them/ connect to your Heart Rate

Sensing Device.

Console shuts off (enters sleep

mode) while in use

Check electrical (wall) outlet Make sure unit is plugged into a functioning wall outlet.

Check connection at front of unit Connection should be secure and undamaged. Replace adapter or connec-

tion at unit if either are damaged.

Check data cable integrity All wires in the cable should be intact. If any are cut or crimped, replace

cable.

Check data cable connections/

orientation

Be sure cable is connected securely and oriented properly. Small latch on

connector should line up and snap into place.

Reset machine Unplug unit from electrical outlet for 3 minutes. Reconnect to outlet.

Condition/Problem Things to Check Solution

Check Speed Sensor -Speed sensor should be connected to data cable. Realign sensor if neces

sary. Replace if there is any damage to the sensor or the connecting wire.

Contact Customer Service (if inside US/Canada) or your local distributor (if

outside US/Canada).

Unit rocks/does not sit level Check level adjustment Levelers may be turned to level machine.

Check surface under unit Adjustment may not be able to compensate for extremely uneven surfaces.

Move machine to level area.

Pedals loose/unit difcult to

pedal/ Pedals seem to skip or

slip with a sudden increase in

rpm

Check pedal to crank

connection

Pedal should be tightened securely to crank arm. Be sure connection is not

cross-threaded.

Check crank arm to axle

connection

Crank arm should be tightened securely to axle.

Check drive belt tension Refer to the “Adjust the Belt Tension” procedure. Contact Customer Service

(if inside US/Canada) or your local distributor (if outside US/Canada).

Clicking sound when pedaling Check pedal to crank

connection

Remove pedals. Make sure there is no debris on threads, and reinstall the

pedals.

Seat post movement Check locking pin Be sure adjustment pin is locked into one of the seat post adjustment holes.

Check locking knob Be sure knob is securely tightened.

Console continuously displays a

video of machine features

Console is in demonstration

mode

Tap on the upper-right corner of the console display ten times. Tap on “Demo

mode app”, and then tap on the “De-activate Demo mode” option.

Console displays a series of

colors at start-up (LCD display

test mode)

Reset machine Unplug unit from electrical outlet for 30 seconds. Reconnect to outlet.

Demonstration Mode

During Demonstration Mode, the Console will display a video presentation that highlights the key features of the machine and the JRNY™ membe

The machine ships with Demonstration Mode inactive.

To activate the Demonstration mode:

1. With the machine activated, tap ten times in the upper-right corner of the

Console Display. The Console will display the “Advanced User Actions”

menu.

Note: In order to display the “Advanced User Actions” menu, the Console

cannot be logged into the JRNY™ app.

2. Tap on the “Demo mode app” option.

Note: This is where Demo mode is activated and de-activated.

3. Tap on the “Activate Demo mode” option.

4. Inspect the Console to be sure that Demo mode is active and running on the

Console Display.

5. Adjust the volume with the volume controls on the back of the Console Display to the middle volume level. Observe how the volume works in th

environment, and adjust it accordingly.

To exit Demonstration mode, perform the above steps but select “De-Activate Demo Mode”.

X10

Maintenance Parts

A Adjustment Handle Cover, Drive Belt InsideL Dumbbell Rack W

B Seat Slider M X Drive PulleyAdjustment Handle, Handlebar Post

C Seat N Fender Cover, Drive BeltY

D Seat Post O Brake Assembly Z Crank Arm

E Seat Post Adjustment Knob P Flywheel AA Crank Cap

F Q Power Inlet BBBrake/Resistance Knob Pedal w/Foot Restraint

G CCAdjustable Console Mast R Front Stabilizer Axle Nut

H Console S Transport Wheel Flywheel Retainer NutDD

I T EEHandlebar Leveler Data Cable

J Adjustment Handle, Handlebar Slider Rear StabilizerU FF Speed Sensor

K Water Bottle Holder V Drive Belt GG Speed Sensor Magnet

REPLACEMENT PROCEDURE SKILL LEVEL

Level I : Low - very little mechanical knowledge or exposure.

Level II : Intermediate - some experience with mechanical procedures

Level III : Advanced - knowledgeable about mechanical procedures

!Disconnect all power to the machine before you service it.

When disposing of old parts, obey the applicable local and provincial requirements.

For instructions to replace the following parts, please refer to the Assembly Manual for your bike:

• Console

• Front Stabilizer

• Handlebar

• Handlebar Post

• Rear Stabilizer

• Seat

• Seat Post

• Water Bottle Holders

Adjust the Belt Tension on the Bowex

™

C7 Bike

Skill Level: II

Estimated Procedure Time: 15-20 minutes

8027901.090122.B

Replacement Procedure

NOTICE: This document provides instructions for the adjustment of the Drive Belt Tension on the Bowex

™

C7 Bike.

If you need assistance, please call Customer Service (if purchased in US/Canada) or your local distributor (if purchased out-Nautilus

side US/Canada). To nd your local distributor, go to: www.nautilusinternational.com

This icon means a potentially hazardous situation which, if not avoided, could result in death or serious injury. Read and understand

all Warnings on this machine.

Nautilus, Inc., www.NautilusInc.com, 5415 Centerpoint Parkway, Groveport, OH 43125 U.S.A. - Customer Service: North America (800) 605-3369, csnls@nautilus.com | outside U.S. www.nautilusinternational.c

in China | © 2020 Nautilus, Inc. | Nautilus, the Nautilus logo, Bowex and the B logo are trademarks owned by or licensed to Nautilus, Inc., which are registered or otherwise protected by common law in the Unit

other countries. | ORIGINAL DOCUMENT - ENGLISH VERSION ONLY

Tools Required (not included)

#2 Phillips screwdriver 17mm Wrench

19mm Wrench

10mm Wrench

Flathead screwdriver 16mm Socket and Wrench

19mm Socket and Wrench

25mm Crank puller

™

Important Safety Instructions - Before servicing or using this equipment, obey the following warnings:

This icon means a potentially hazardous situation which, if not avoided, could result in death or serious injury. Read and understand

all Warnings on this machine.

• Read and understand the Part Replacement Procedure before working on the machine. Failure to obey the instructions and safety warnings could ca

injury to the service technician or bystanders.

• Keep bystanders and children away from the product being serviced at all times.

• Disconnect all power to the machine before you service it.

• Make sure that the repair is done in an appropriate work space away from foot trafc and exposure to bystanders.

• Some components of the equipment can be heavy or awkward. Enlist the service of a second person when you do maintenance steps involving thes

components. Do not try to do heavy or awkward steps on your own.

• Use only replacement parts and hardware that are supplied or approved by Nautilus. Failure to use Nautilus-approved replacement parts can advers

affect the safety and functionality of the equipment creating a risk to users and will void the warranty.

• Be sure that all warning stickers and instructional placards applied to the product stay present and in good condition when doing maintenance or

replacing components. If at any time the Warning labels become loose, unreadable or dislodged, replace the labels. If purchased in US/Canada, cont

Customer Service for replacement labels. If purchased outside US/Canada, contact your local distributor for them.

• Do not try to change the design or functionality of the machine being serviced as this can adversely affect user safety.

• Do not use the machine until all shrouds, instructions, warning labels and correct functionality have been verified and tested for correct performanc

• SAVE THESE INSTRUCTIONS

7. Using a #2 Phillips screwdriver, remove the indicated hardware from

the Drive Belt Cover. Carefully remove the Drive Belt Cover and set it

safely aside for reassembly.

Note: “A” indicates the two machine screws with washers.

8. Use a 19mm open end wrench to hold the Flywheel Axle Nut on one

side steady and loosen the Flywheel Axle Nut on the opposite side with a

19mm socket and wrench.

Be sure to keep ngers clear of all pinch hazards.

9. Check the tension:

• Push the Drive Belt downward at the midpoint (M) between the pulleys

and measure the distance. The Drive Belt should have only 0.25” (0.64

cm) of give.

Or:

• Hold the edges of the Drive Belt at the midpoint (M) and twist it. It should

turn only 90 degrees (1/4 turn, to vertical).

If the Drive Belt is too loose—use a 10mm wrench to turn each Flywheel

Retainer Nut 1/4 turn to the right.

If the Drive Belt is too tight—use a 10mm wrench to turn each Flywheel

Retainer Nut 1/4 turn to the left.

Flywheel Axle Nut

Flywheel Axle NutFlywheel Axle Nut

Tensioner Eyebolt

Drive Belt

Drive BeltDrive Belt

Flywheel Retainer Nuts

Flywheel Retainer NutsFlywheel Retainer Nuts

Drive Belt Cover

10. Reinstall the right Crank Arm and Pedal on the Crank shaft.

Installation does not require the use of the crank puller. Be sure the Crank

Arms are connected at 180° from each other.

11. Get on the bike and check the movement of the Drive Belt by rocking

back and forth on the pedals. The Pedals and Flywheel should move as

one.

Adjust the Drive Belt tension again if necessary.

12. Tighten the Axle Nuts when the Drive Belt tension is correct.

NOTICE: Make sure the Flywheel is aligned with the Frame. Be

sure the Flywheel Axle does not touch the Drive Belt

inside.

13. Remove the right Pedal and Crank Arm. Reinstall the Drive Belt

Cover, Crank Arm and Pedal.

14. Add Loctite

® 272 (or equivalent) to the inner threads of the Crank

Nut. Do not to apply the Loctite

272 to the Crank Shaft.

15. Install the Crank Nut onto the Crank Shaft, and fully tighten it.

16. Replace the threaded Cap onto the Crank Arm.

17. Final Inspection

Inspect your machine to ensure that all hardware is tight and components

are properly assembled.

Do not use until the machine has been fully assembled and

inspected for correct performance in accordance with the

Owner’s Manual.

Crank Shaft

Crank Nut

Crank Shaft

Adjust the Seat Post Mounting Bracket (Seat Clamp)

on the Bowex™

C7 Bike Skill Level: II

Estimated Procedure Time: 15-20 minutes

8030111.090122.A

Replacement Procedure

NOTICE: This document provides instructions for reversing the position of the Seat post mounting bracket (Seat clamp) in order to decrease the distance from the Se

Handlebars on the Bowex

™

C7 bike.