Troubleshooting - Electric Drive System

Elevate Rear Wheel

Safety Note: Elevate rear wheel when troubleshooting the drive system.

When troubleshooting the drive system, the first thing you always want to do is elevate the rear wheel so the bike doesn't unexpectedly jolt forward.

  • Slide a piece of wood under the cruiser just behind the kickstand. 
  • Lift the rear of the bike by the saddle horn and gently set it on the wood.
  • Ensure the bike is stable. Make adjustments as necessary.

Check Throttle Operation

Ensure the rear wheel is elevated and free to spin. Gently apply throttle. 

  • Does the Thumb Throttle operate the rear wheel?
Yes (Normal) - Click Here
No (Abnormal) - Continue Below 


⚠️  Note: If the hub motor is trying to operate, but is having some mechanical problems or oscillations, select 'yes' above.

Important Note: The electric drive system is operationally disabled when the brakes are applied. Verify the brake levers are not operated.  If the throttle is still not working, please continue.

Service Decision:  Service Shop or Do-it-Yourself?

Okay, its looking like there is an issue with your e-bike that will require some disassembly and internal troubleshooting. If you prefer your local service shop to work on your fat woody, it's time to transport or ride it there (manually pedal). If you're comfortable working on your fat woody yourself and have the proper tools, please continue.

Tools Required:

  • Ratchet w/ Metric Sockets
  • Metric Allen Wrench Set
  • Digital VOM / Multimeter



You may want to consider a Fat Woody rear bike carrier rack. In addition to helping out in this type situation, it's great to transport your Fat Woody to areas further away you might like to explore. Click here for more information.

Disassembly Required

Remove the Left Tank Clam

If you haven't done this procedure before, please visit the 'Disassembly' section of this manual and then return to this point.

Re-Connect Top Console

In order troubleshoot the electric drive system, you'll need to temporarily re-connect the top console so components like the LCD Display and Main Power Switch are operable (with the left clam removed).


Warning: Rather than allow the top console to just balance on top, I recommend reinstalling the top console back in its normal position. That way it won't fall or get damaged.