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Nautilus U626 - User Manual

Nautilus U626
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1
Nautilus
®
U624/U626 (Model Year 2014)
Upright Bikes Service Manual
8008323.040115.A
Service Manual
Important Safety Instructions 2
Safety Warning Labels and Serial Number 3
Reading the Product Specication Label 3
Specications 3
Maintenance 4
Leveling the Machne 5
Moving the Machine 5
Troubleshooting 6
Console Service Mode 8
Maintenance Parts Exploded View 10
Replacement Procedure Skill Level 12
Mechanical Procedures 13
Belt Tension Adjustment 13
Set the Brake Tension (Calibration) 16
Part Replacement 19
Console 19
Pedals 21
Crank Arms – U626 23
Transport Wheels, Front Endcaps and Footpads 27
Shrouds 29
Handlebar Assembly 34
Console Mast 37
Data Cable in the Mast 41
Brake Assembly 44
Servo Motor 46
Drive Belt and Flywheel Assembly 50
Belt Tensioner Assembly (Idler Assembly) 53
Drive Pulley Assembly (Crank Assembly) – U624 55
RPM Sensor (Speed Sensor) 58
Power Inlet 60
Table of Contents
Nautilus, Inc., www.NautilusInc.com - Customer Service: technics@nautilus.com | 18225 NE Riverside Parkway, Portland, OR 97230 USA | © 2014 Nautilus, Inc. | ® indicates trademarks
registered in the United States. These marks may be registered in other nations or otherwise protected by common law. Polar
®
and Bluetooth
®
are registered trademarks of their
respective owners.
ORIGINAL DOCUMENT - ENGLISH VERSION ONLY

Questions and Answers

  • T
    torresemilySep 3, 2025
    What causes a clicking sound when pedaling my Nautilus Exercise Bike?
    • R
      roy84Sep 4, 2025
      If you hear a clicking sound while pedaling your Nautilus Exercise Bike, remove the pedals, check the threads for any debris, and then reinstall them.
  • J
    John WhiteheadSep 18, 2025
    What causes seat post movement on a Nautilus Exercise Bike?
    • A
      Antonio ValenciaSep 18, 2025
      Seat post movement on your Nautilus Exercise Bike can be caused by a loose adjustment pin or knob. Ensure the adjustment pin is locked into one of the seat post adjustment holes and that the knob is securely tightened.
  • K
    kchavezSep 16, 2025
    What to do if my Nautilus Exercise Bike is not level?
    • M
      Megan WilsonSep 16, 2025
      If your Nautilus Exercise Bike rocks or doesn't sit level, adjust the levelers until the bike is level. Keep in mind that adjustments may not compensate for extremely uneven surfaces, so consider moving the bike to a more level area.
  • S
    Stephanie EatonSep 14, 2025
    How to fix a clicking sound when pedaling my Nautilus Exercise Bike?
    • M
      Michael TaylorSep 14, 2025
      To address a clicking sound when pedaling your Nautilus Exercise Bike, remove the pedals and reattach them.
  • A
    Angela RoySep 12, 2025
    Why is my Nautilus Exercise Bike not displaying telemetric heart rate?
    • J
      Jeffrey JuarezSep 12, 2025
      If your Nautilus Exercise Bike operates but does not display telemetric HR, ensure the strap is 'POLAR®' compatible and uncoded. Make sure the strap is directly against the skin and the contact area is wet. Select the Edit User Profile option and ensure the WIRELESS HR setting is set to ON. Try moving the unit away from sources of interference like TVs or microwaves. If eliminating interference doesn't help, replace the strap. If the HR still doesn't function, replace the console.
  • T
    Tara ComptonSep 12, 2025
    What does it mean when my Nautilus Exercise Bike console displays 'Please Pedal'?
    • N
      Nicholas ParksSep 12, 2025
      If your Nautilus Exercise Bike console displays a 'Please Pedal' error code and there's no speed/RPM reading, ensure all wires in the cable are intact, replacing the cable if any are cut or crimped. Also, confirm the cable is connected securely and oriented properly, making sure the small latch on the connector lines up and snaps into place. Check that the magnet is in place on the pulley. Verify the speed sensor is aligned with the magnet and connected to the data cable; realign the sensor if necessary, and replace it if there is any damage to the sensor or the connecting wire.
  • K
    Kyle RichardsonSep 9, 2025
    Why is my Nautilus Exercise Bike display not working or only partially working?
    • V
      Valerie KennedySep 9, 2025
      If your Nautilus Exercise Bike has no display, a partial display, or won't turn on, first ensure it's plugged into a functioning wall outlet. Check that the connection is secure and undamaged, replacing the adapter or connection at the unit if either are damaged. Ensure all wires in the cable are intact, replacing the cable if any are visibly crimped or cut. Confirm the cable is connected securely and oriented properly, with the small latch on the connector lined up and snapped into place. Inspect the console display for cracks or damage, and replace the console if damaged. If the console only shows a partial display and all connections are fine, replace the console. If these steps don't resolve the issue, further assistance may be needed.
  • J
    Joseph MartinSep 7, 2025
    What to do if my Nautilus Exercise Bike console shuts off while in use?
    • N
      Nathan YoungSep 7, 2025
      If your Nautilus Exercise Bike console shuts off during use, ensure the unit is plugged into a functioning wall outlet and that the connection is secure and undamaged. If any wires in the cable are cut or crimped, replace the cable. Also, make sure the cable is connected securely and oriented properly, ensuring the small latch on the connector lines up and snaps into place. Try unplugging the unit from the electrical outlet for 3 minutes, then reconnect it. Check that the magnet is in place on the pulley and that the speed sensor is aligned with the magnet and connected to the data cable. Realign the sensor if necessary, and replace it if there's any damage to the sensor or connecting wire.
  • G
    Glenda LeblancSep 5, 2025
    Why are the pedals loose or the unit difficult to pedal on my Nautilus U626 Exercise Bike?
    • Z
      Zachary WilliamsSep 6, 2025
      If the pedals on your Nautilus Exercise Bike are loose or the unit is difficult to pedal: * Ensure the pedals are securely tightened to the crank, making sure the connection isn't cross-threaded. * Confirm the crank is securely tightened to the axle and that the cranks are connected at 180 degrees from each other.
  • J
    Jordan McleanAug 21, 2025
    What to do if my Nautilus U626 Exercise Bike has no display or a partial display, and won't turn on?
    • T
      Timothy MoraAug 21, 2025
      If your Nautilus Exercise Bike isn't displaying anything or only shows a partial display, and the unit won't power on, try these steps: * Ensure the unit is plugged into a functioning wall outlet. * Check the adapter and connection at the unit for any damage, replacing if necessary, if there is any damage. * Inspect the cable for any crimped or cut wires, replacing the cable if needed. * Confirm the cable is securely connected and correctly oriented, ensuring the small latch on the connector snaps into place. * Inspect the console display for cracks or damage, replacing the console if damaged. If the console shows a partial display and all connections are fine, replace the console. If these steps don't solve the problem, contact your local distributor for help.

Nautilus U626 Specifications

General IconGeneral
Product typeSpin bicycle
Bottle holderYes
Saddle adjustmentHorizontal
Maximum user weight136 kg

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