Schwinn  A.C. Classic Service Manual
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Schwinn A.C.
Classic, Schwinn A.C.
Sport,
and Schwinn A.C.
Performance
Nautilus
Bowflex
Schwinn
Fitness
StairMaster
Universal
Nautilus Institute
®
®
®
®
®
®
003-3331-051409A

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Summary of Contents for Schwinn Schwinn A.C. Classic

  • Page 1 Schwinn A.C. Classic, Schwinn A.C. Sport, ™ ™ and Schwinn A.C. Performance ™ Nautilus Bowflex Schwinn Fitness StairMaster Universal Nautilus Institute ® ® ® ® ® ® 003-3331-051409A...
  • Page 2: Table Of Contents

    © 2009 Nautilus, Inc., All rights reserved ™ and ® indicate a trademark or registered trademark. Nautilus, Inc. trademarks include NAUTILUS®, BOWFLEX®, STAIRMASTER®, SCHWINN® and UNIVERSAL® and respective logos. 1-800-NAUTILUS www.nautilus.com.. Other trademarks are the property of their respective owners.
  • Page 3: Important Safety Warnings

    This icon means a potentially hazardous situation which, if not avoided, could result in death or serious injury. Failure to follow these precautions can cause damage to the Schwinn IC Bike series, serious injury to users and bystanders, and can ®...
  • Page 4: Tools

    Tools We recommend the following tools and lubes to properly assemble, maintain and repair all Schwinn Indoor Cycling bikes. ® Lubricants Tools Torque wrench w/ 8mm Hex key socket: used to tighten the Note: To obtain the recommended lubricates contact Nautilus Inc.
  • Page 5: Serial Number

    Serial Number Serial Number Find the serial number on the underside of the machine base. Decode the information in the serial number with the below instructions: XXXXXX - SKU VVV - NLS Vendor Code WKYY - Week/Year 9999 - Machine that made production run Troubleshooting Problem: Chain is too loose, tight, or making a grinding sound.
  • Page 6 Troubleshooting Problem: Smart Release engages/disengages when pedaling Solution: Adjust Smart Release Attention: Only a mechanic trained to work on Schwinn ® bicycles should do this procedure. Make adjustments to the Smart Release™ mechanism only to restore the mechanism to factory specifications. Never overtighten.
  • Page 7 Troubleshooting Problem: Bike is Wobbling or Uneven While Riding Solution: Check the foot levelers on the bottom of the stabilizers. Adjust the levelers and the bike until it is square on the floor. Secure the leveler nuts to prevent them from loosening. (See Figure 5.) Problem: Crank Arms or Pedals Feel Loose Solution:...
  • Page 8 Troubleshooting Problem: Emergency Brake not functioning properly Solution: Replace full assembly Loosen the Brake Adjustment Rod (A) clockwise while loosening the Brake Adjustment Housing (B) counterclockwise. As the Brake Adjustment Rod unscrews from the Link Arms (C) raise the Brake Adjustment Housing and Rod. Remove the torsion spring and slide out the brake assembly for replacement.
  • Page 9 Troubleshooting Problem: Handlebar or Seat Post is too Tight Solution: Clean and lubricate the handlebar/seat post extension tube and frame sleeves with silicone lube. If fit remains tight, switch the handlebar or seat post with one from another bike. If this does not fix the problem order a new sleeve. Problem: Stretch Pads - worn out, torn Solution: Remove complete pad.
  • Page 10: Console

    Troubleshooting Console (Make sure console is updated to the latest firmware version) Console does not turn ON. Problem: Solution: Press any of the three buttons and see if console turns ON. Change batteries. Replace Console. USB does not work / save data. Problem: Solution: Check the settings in Service Menu (refer to Owners manual) and make sure USB is enabled.
  • Page 11 Console (cont.) For any error generated in console. Problem: Solution: Refer to Owners manual for description and solution(s). If possible, save the Settings in a USB stick by going to Service Mode -> U-- -> U03. Exporting Console settings to send to Nautilus for troubleshooting help: •...
  • Page 12: Power Sensor

    Power Sensor Problem: Power does not show up on the console (displayed as “---”). Solution: Solution 1: The power sensor may be in sleep mode. To wake up the power sensor start pedaling the bike for 10-20s; the vibrations of the chain and crank movement should be enough to turn on the sensor. If the displayed power still does not show up tilt the bike over to one side for 5-10s Solution 2: The power sensor may not be paired with the speed sensor;...
  • Page 13: Speed Sensor

    Troubleshooting Power Sensor (cont.) Problem: Displayed power is not accurate. Solution: Perform a full-up calibration. Follow the full-up calibration procedure in the owner’s manual. Perform a 0g calibration. Follow the 0g calibration procedure in the owner’s manual. If the above 2 solutions do not fix the problem, replace the power sensor. Please take note that upon power sensor replacement the console and speed sensor will need to be re-paired to the new power sensor.
  • Page 14: Parts

    Parts Brake Rod and Knob Replacement Tools Required: • Adjustable wrench • 3mm hex key for plastic removal Procedure: Replace the Tension Control Knob Removal: Remove one side brake cover. Turn brake adjustment knob clockwise until brake is fully engaged with the flywheel. Using an adjustable wrench, unscrew (couter-clockwise) the brake adjustment knob assembly from the frame head tube.
  • Page 15 Before starting any maintenance on the chain drive, familiarlize yourself with all moving parts. Never leave a Schwinn bike unattended with the ®...
  • Page 16: Contacts

    Contacts EUROPE, MIDDLE EAST & AFRICA NORTH AMERICA CUSTOMER SERVICE INTERNATIONAL CUSTOMER SERVICE Tel: (800) 605-3369 Nautilus International GmbH E-mail: csnls@nautilus.com Albin-Köbis-Str. 4 51147 Köln CORPORATE HEADQUARTERS Tel: + 49 02203 2020 0 Nautilus, Inc. Fax: + 49 02203 2020 45 45 World Headquarters E-mail: technics@nautilus.com 16400 SE Nautilus Drive...
  • Page 17 © 2009 Nautilus, Inc., All rights reserved ™ and ® indicate a trademark or registered trademark. Nautilus, Inc. (www.nautilus.com) trademarks include NAUTILUS®, BOWFLEX®, STAIRMASTER®, SCHWINN® and UNIVERSAL® and respective logos. Other trademarks are the property of their respective owners. Nautilus...

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