Description
These Magnetic discs help to tell the motor controller that you are turning the pedals & engage the pedal assist power. They can develop cracks which upset the signal & result in intermittent power delivery. This is a constant problem when it’s happens & the display will not show an error code. The power will drop to nothing then start up again randomly in all power levels. Using the throttle will bypass this & the motor will work properly. It’s not a hard job to do but there is a special tool required & instructions are on our website.
BBSO2B 300watt, 500watt & 750watt motors only.
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