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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

  • K
    Katrina FowlerSep 2, 2025
    How to stop my Nautilus Exercise Bike from rocking or sitting unevenly?
    • V
      Victoria LozanoSep 2, 2025
      To resolve a rocking or uneven Nautilus Exercise Bike, adjust the levelers until the bike is stable. If the surface is extremely uneven, you may need to move the bike to a more level area.
  • D
    diazscottAug 31, 2025
    What causes incorrect telemetric HR display on my Nautilus U626 Exercise Bike?
    • K
      Kenneth MartinezAug 31, 2025
      If your Nautilus U626 Exercise Bike is displaying telemetric heart rate (HR) incorrectly, make sure that a personal electronic device is not blocking the HR receiver on the left side of the media tray.
  • S
    shanehortonAug 29, 2025
    Why is my Nautilus U626 Exercise Bike not displaying telemetric HR?
    • D
      dwalkerAug 29, 2025
      If your Nautilus U626 Exercise Bike operates but doesn't display telemetric heart rate (HR), try these steps: * Ensure the strap is POLAR® compatible and uncoded, placed directly against your skin, and the contact area is wet. * Go to the WIRELESS HR setting in the Edit User Profile option and ensure that the current value is set to ON. * Move the unit away from potential sources of interference like TVs or microwaves. If the issue persists, replace the strap. If the HR still doesn't function, the console may need replacement.
  • N
    Nancy ClineAug 27, 2025
    What to do if my Nautilus Exercise Bike operates but the contact HR is not displayed?
    • D
      Daniel McdonaldAug 28, 2025
      If your Nautilus Exercise Bike is running, but the contact heart rate (HR) isn't being displayed, consider these possible solutions: * Ensure the cable is securely connected to the console. * Make sure your hands are centered on the HR sensors, kept still, and applying relatively equal pressure to each side. * If your hands are dry or calloused, use a conductive electrode cream to improve contact. These creams are available online or at medical and fitness stores. If these steps don't work, the handlebars may need to be replaced.
  • J
    Julie HughesAug 26, 2025
    Why is my Nautilus U626 Exercise Bike showing a 'Please Pedal' error and no speed/RPM reading?
    • N
      Noah MorrisAug 26, 2025
      If your Nautilus Exercise Bike console displays a 'Please Pedal' error and you're not getting any speed or RPM readings, check the following: * Make sure all wires in the cable are intact, replacing the cable if any are cut or crimped. * Ensure the cable is securely connected and properly oriented, with the small latch on the connector lined up and snapped into place. * Verify that the magnet is in place on the pulley. * Check 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 the connecting wire.
  • S
    Stephen HawkinsAug 25, 2025
    Why does my Nautilus U626 Exercise Bike console shut off while I'm using it?
    • S
      Scott LynnAug 25, 2025
      The console might be shutting off due to power issues or loose connections. Here's what to check: * Ensure the bike is plugged into a working wall outlet. * Check the adapter and connections for damage, replacing if necessary. * Inspect the cable wires for cuts or crimps, and replace the cable if damaged. * Make sure the cable is securely connected and properly oriented, with the latch snapped in place. Additionally, try unplugging the unit for 3 minutes and then reconnecting it. Also, verify that the magnet is in place on the pulley and that the speed sensor is correctly aligned with the magnet and connected to the data cable. Realign or replace the sensor if needed.
  • B
    Brittany TrujilloAug 22, 2025
    How to fix seat post movement on Nautilus Exercise Bike?
    • M
      Michael VargasAug 22, 2025
      To stop seat post movement on your Nautilus Exercise Bike: * Ensure the adjustment pin is locked into one of the seat post adjustment holes. * Make sure the knob is securely tightened.

Nautilus U626 Specifications

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

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