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8024500.021520.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. 

 www.nautilusinternational.com | © 2019 Nautilus, Inc. | Nautilus, the Nautilus logo, Bowflex and Schwinn are trademarks owned by or licensed to Nautilus,Inc., which are registered or 

otherwise protected by common law in the United States and other countries. | 

ORIGINAL DOCUMENT - ENGLISH VERSION ONLY

8024502.021520.B

Schwinn

 IC4 / IC8 and Bowflex

 

C6 Bike 

Service Manual

Section Code 

Section 

Page Number

 

Important Safety Instructions  

2

 

   Safety Warning Labels and Serial Number 

3

 

   FCC Compliance 

3

 

Specifications 

4

 1 

Maintenance 

5

 

Moving/Storing the Machine 

6

 

Leveling the Machine 

6

 

Heart Rate Armband 

7

 1 

Adjustments 

8

 

Locking the Flywheel for Storage 

9

 

Troubleshooting 

10

 

Maintenance Parts Exploded View 

12

 

Replacement Procedure Skill Level 

13

 

 

Mechanical Procedures 

 

   Adjust the Belt Tension 

14

 

   Calibrate the Magnetic Resistance Sensor 

18

 

  Install the Handlebar Bushing Kit 

21

 

 

Part Replacement

 

   Replace the Emergency Brake Pad 

25

 

   Replace the Brake / Resistance Knob Assembly 

28

 

   Replace the Crank Arm 

32

 

   Replace the Drive Belt 

35

 

   Replace the Drive Belt Cover 

41

 

10 

   Replace the Fender 

44

 

11 

   Replace the Flywheel Assembly 

46

 

12 

  Replace the Flywheel Tensioners 

53

 

13 

  Replace the Handlebar and Seat Post Bushing 

57

 

14 

  Replace the Power Inlet 

63

 

15 

   Replace the Speed Sensor 

68

 

16 

   Replace the Wiring Harness 

76

 

Summary of Contents for Schwinn IC4

Page 1: ...l Number 3 1 FCC Compliance 3 1 Specifications 4 1 Maintenance 5 1 Moving Storing the Machine 6 1 Leveling the Machine 6 1 Heart Rate Armband 7 1 Adjustments 8 1 Locking the Flywheel for Storage 9 1 T...

Page 2: ...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 c...

Page 3: ...r 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 encour...

Page 4: ...with IC4 and C6 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 app...

Page 5: ...monia Do not clean the Console in direct sunlight or at high temperatures Be sure to keep the Console free of moisture Weekly Clean the machine to remove any dust dirt or grime from the surfaces Check...

Page 6: ...r safe storage of the machine remove the power supply and place in a secure location Tighten the Brake Resis tance Adjustment Knob as described until the Flywheel is locked Place the machine in a secu...

Page 7: ...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 cir...

Page 8: ...Adjustment Foot pedals with straps provide secure footing to the exercise bike 1 Put the ball of each foot in the Foot Restraint on the Pedals 2 Fasten the strap over the shoe 3 Repeat for the other f...

Page 9: ...nd 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 Adjustme...

Page 10: ...Sensor Make sure the RPM Sensor Magnet and the RPM Sensor are in place No Speed RPM reading Check data cable integrity All wires in cable should be intact If any are cut or crimped replace cable Check...

Page 11: ...ensor 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...

Page 12: ...ap E Seat Post Adjustment Knob P Power Inlet AA Pedal w Foot Restraint F Brake Resistance Knob Q Front Stabilizer BB Axle Nut G Console R Transport Wheel CC Flywheel Retainer Nut H Media Tray S Levele...

Page 13: ...edgeable 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 rep...

Page 14: ...maintenance steps involving these 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 Nautil...

Page 15: ...Drive Belt slips continue to step 3 3 Using a flathead screwdriver remove the threaded Cap from the right Crank Arm 4 Using a 16mm socket and wrench remove the Flange Nut under the threaded Cap 5 Thr...

Page 16: ...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 a...

Page 17: ...gain 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...

Page 18: ...ildren 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 traffic...

Page 19: ...alibrated and is the one flashing Turn the Resistance Knob counter clockwise until it is unable to turn and then turn it clockwise a quarter of a turn 5 Push the START ENTER button to set this value a...

Page 20: ...ew 100 Configured Value The Console will update the displayed value 10 Unplug the machine from the power adapter for 5 minutes and then plug it back into the machine The Console will activate with the...

Page 21: ...avy or awkward Enlist the service of a second person when you do maintenance steps involving these components Do not try to do heavy or awkward steps on your own Use only replacement parts and hardwar...

Page 22: ...sconnect the Cables that connect the Console to the Frame Assembly NOTICE Do not crimp any cables 5 Being prepared to support the Handlebars loosen the Handlebar Post Adjustment Handle and remove the...

Page 23: ...iver to remove the Wedge Bushing exposed behind the Threaded Cap from the Frame Assembly or safely tilt the machine until the Wedge Bushing falls from the Frame Assembly Note Be sure to notice how the...

Page 24: ...everse order 11 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...

Page 25: ...cedure before working on the machine Failure to obey the instructions and safety warnings could cause injury to the service technician or bystanders Keep bystanders and children away from the product...

Page 26: ...reassembly NOTICE Hold the Brake Cover so that it does not fall 3 Loosen the Resistance Knob to the minimum resistance setting 4 Loosen and remove the hardware indicated by arrows that attaches the E...

Page 27: ...nto the opening of the Emergency Brake Pad to keep it in place and install the hardware from the other side 7 Reinstall the Fender NOTICE Do not crimp the cable 8 Adjust the Resistance Knob as necessa...

Page 28: ...d person when you do maintenance steps involving these 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...

Page 29: ...inimum resistance setting 4 Using a small 2 3mm steel pin and hammer push the Roll Pin out of the Collar and Resistance Adjustment Shaft You may need to push down slightly on the Resistance Knob at th...

Page 30: ...ol or turning the bike upside down 7 Using a 2 Phillips screwdriver remove the hardware indicated by ovals that secures the Brake Sensor Allow the Brake Sensor to hang from the Cable NOTICE Do not cri...

Page 31: ...side the square mount until the Shaft is threaded through the Square Spacer 11 Final Inspection Inspect your machine to ensure that all hardware is tight and components are properly assembled Do not u...

Page 32: ...when you do maintenance steps involving these 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...

Page 33: ...de for reassembly Note The Left Pedal is reverse threaded Orientation is based from a seated position on the bike The Left Pedal has an L the Right Pedal an R 3 Using a flathead screwdriver remove the...

Page 34: ...d parts 7 Installation is the reverse procedure Installation does not require the use of the Crank Puller Be sure the Crank Arms are connected at 180 from each other To reinstall the Pedals carefully...

Page 35: ...eavy 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 adversely affect the safety a...

Page 36: ...3 Using a 16mm socket and wrench remove the Flange Nut under the threaded Cap 4 Thread the Crank Puller into the Crank Arm A When the Crank Puller is in the correct position only 1 2 threads on the ou...

Page 37: ...Fender so that it does not fall 7 Loosen the Resistance Knob to the minimum resistance setting 8 Using a 2 Phillips screwdriver remove the hardware indicated by ovals that secures the Brake Sensor Al...

Page 38: ...s screwdriver remove the indicated hardware from the Drive Belt Cover Carefully remove the Drive Belt Cover and set it safely aside for reassembly Note The oval indicates the two machine screws with w...

Page 39: ...e outer Flywheel Retainer Nut from the Tensioner Eyebolt Remove the Tensioner Eyebolt and inner Retaining Nut from the Flywheel Axle and Tensioner Support Bracket Set the Tensioner hardware aside for...

Page 40: ...Be sure to keep fingers clear of all pinch hazards as you turn the Drive Pulley and Flywheel 22 Reassembly of the brake parts is the reverse procedure for removal NOTICE Do not crimp any cables Insta...

Page 41: ...teps involving these 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 r...

Page 42: ...Flange Nut under the threaded Cap 5 Thread the Crank Puller into the Crank Arm A When the Crank Puller is in the correct position only 1 2 threads on the outer portion CP2 of the Crank Puller should...

Page 43: ...NOTICE Installation of the Crank Arms does not require the use of the Crank Puller Be sure the Crank Arms are connected at 180 from each other 10 Final Inspection Inspect your machine to ensure that...

Page 44: ...st the service of a second person when you do maintenance steps involving these components Do not try to do heavy or awkward steps on your own Use only replacement parts and hardware that are supplied...

Page 45: ...t fall 3 Remove the Fender from the front of the machine after noting how the Resistance Cable routes through it NOTICE Do not crimp the cable 4 Install the new Fender making sure the Resistance Cable...

Page 46: ...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 adversely affect the safe...

Page 47: ...of the Crank Puller should show Note Be sure the end of the Bolt CP1 in the Crank Puller is flush with the inner surface CP2 as shown before use 6 Using a 15mm wrench turn the inner portion CP3 of the...

Page 48: ...outes through it Place the Fender outside the work area 9 Loosen the Resistance Knob to the minimum resistance setting 10 Using a 2 Phillips screwdriver remove the hardware indicated by ovals that sec...

Page 49: ...g a 3 5mm hex wrench remove the hardware indicated by ovals that attaches the Brake Assembly to the Resistance Nut from both sides of the machine Carefully remove the Brake Assembly NOTICE Be prepared...

Page 50: ...bolt Remove the Tensioner Eyebolt and inner Retaining Nut from the Flywheel Axle and Tensioner Support Bracket Set the Tensioner hardware aside for reassembly NOTICE It may be necessary to move the Fl...

Page 51: ...ywheel Drive Pulley Drive Belt Flywheel Pulley Drive Belt Speed Sensor and Spacer Thin Nut 20 Remove the Drive Belt from the Flywheel Pulley to the outside Remove the Thin Nut from the right end of th...

Page 52: ...re the Resistance Cable is routed between the Frame and the top of the Fender Installation does not require the use of the Crank Puller Be sure the Crank Arms are connected at 180 from each other 26 M...

Page 53: ...you do maintenance steps involving these 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 us...

Page 54: ...of the Crank Puller should show Note Be sure the end of the Bolt CP1 in the Crank Puller is flush with the inner surface CP2 as shown before use 6 Using a 15mm wrench turn the inner portion CP3 of the...

Page 55: ...ut Flywheel Bracket Tensioner Eyebolt Tensioner Support Bracket 8 Mark the position of the Flywheel Axle Nut on the Flywheel Bracket Also record the number of threads showing on the Tensioner Eyebolt...

Page 56: ...Support Bracket 13 Re install all remaining parts that were removed in reverse order NOTICE Do not crimp any cables Install the Flywheel Tensioners at the position that you recorded in Step 9 Make sur...

Page 57: ...ntenance steps involving these 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...

Page 58: ...Bushing skip to Step 15 5 Disconnect the Cables that connect the Console to the Frame Assembly NOTICE Do not crimp any cables 6 Being prepared to support the Handlebars loosen the Handlebar Post Adju...

Page 59: ...ions supplied from the manufacturer as regards to the proper and safe use of the Heat Gun Do not grasp any items or surfaces that have been heated without the proper heat resistant materials 9 Use the...

Page 60: ...Post Bushing 11 With the Handlebar Post Bushing released place the end of the screwdriver under the lip of the Bushing Pivot upward until the Handlebar Post Bushing is released Continue pushing upwar...

Page 61: ...Assembly 17 On the left side of the Seat Post there is a small opening indicated by oval where the Seat Post Bushing Tab is secured Place the end of a small standard screwdriver into the opening and...

Page 62: ...nd will set into the small opening 20 Re install all remaining parts that were removed in reverse order 21 Final Inspection Inspect your machine to ensure that all hardware is tight and components are...

Page 63: ...kward Enlist the service of a second person when you do maintenance steps involving these components Do not try to do heavy or awkward steps on your own Use only replacement parts and hardware that ar...

Page 64: ...e images provided exactly 1 Unplug the AC Adapter from the wall outlet and machine 2 Fully turn the Resistance Knob clockwise to lock the Flywheel into place 3 Remove the Console Cable Grommet from th...

Page 65: ...Gently push the Console Cable into the Frame Assembly up to where the Resistance Cable joins it which is about 2 5cm 1 5 Using a 14mm Open Faced Wrench remove the securing ring from the Power Inlet R...

Page 66: ...move the old Power Inlet Cable from the Power Input Connection and replace with the new Power Inlet Cable 9 Gently pivot the Power Inlet Cable into place on the Frame Assembly and secure it to the Fra...

Page 67: ...p the Cable 13 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...

Page 68: ...se 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 c...

Page 69: ...f the Crank Puller should show Note Be sure the end of the Bolt CP1 in the Crank Puller is flush with the inner surface CP2 as shown before use 6 Using a 15mm wrench turn the inner portion CP3 of the...

Page 70: ...outes through it Place the Fender outside the work area 9 Loosen the Resistance Knob to the minimum resistance setting 10 Using a 2 Phillips screwdriver remove the hardware indicated by ovals that sec...

Page 71: ...s screwdriver remove the indicated hardware from the Drive Belt Cover Carefully remove the Drive Belt Cover and set it safely aside for reassembly Note The oval indicates the two machine screws with w...

Page 72: ...ench Remove the Flywheel Axle Nuts from the Flywheel Axle Set the hardware safely aside for reassembly 17 Using a 10mm wrench loosen and remove the outer Flywheel Retainer Nut from the Tensioner Eyebo...

Page 73: ...refully remove the Speed Sensor and Spacer from the Axle Set the old Speed Sensor safely aside NOTICE This step may require two people 22 Put the new Speed Sensor and Spacer in position on the Axle Re...

Page 74: ...eed Sensor Cable to the harness plug and push the connection into the Left Frame Upright 26 Reinstall the Lower Rubber Grommet in the lower opening in the Left Frame Upright to hold the Speed Sensor C...

Page 75: ...nnected at 180 from each other 28 Make sure that the Drive Belt tension is correct Refer to the Adjust the Belt Tension procedure 29 Final Inspection Inspect your machine to ensure that all hardware i...

Page 76: ...n when you do maintenance steps involving these 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...

Page 77: ...llips screwdriver loosen and remove the hardware indicated on one side by ovals that attaches the Fender to the Main Frame Set the hardware safely aside for reassembly NOTICE Hold the Fender so that i...

Page 78: ...aptures the Resistance Cable Note The Resistance Cable Grommet is needed for shipment of the machine only The Grommet does not need to be re installed and can be discarded 10 Remove the Speed Sensor G...

Page 79: ...79 12 Attach a string to the end of the Speed Sensor Connection NOTICE Do not crimp the Cable 13 Using a 14mm Open Faced Wrench remove the securing ring from the Power Inlet Power Inlet Securing Ring...

Page 80: ...er Inlet Grommet that is on the other side of the Frame Assembly from the Power Inlet 15 From the Power Inlet Grommet opening gently pull the Power Inlet Cable from the Frame Assembly 16 Remove the Po...

Page 81: ...release them 19 Holding the new Wiring Harness next to the old one remove the string from the old Speed Sensor Connection and attach it to the new Speed Sensor Connection Be sure that it is the Speed...

Page 82: ...Grommet Be sure not to push it into the Frame Assembly 27 Replace the Speed Sensor Grommet NOTICE Do not crimp the Cable 28 Replace the Console Cable Grommet NOTICE Do not crimp the Cable 29 Connect...

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