Introduction

Watch the following video for instructions on removing the Bafang Ultra M620 motor from your eBike.

You will need the following tools to perform this removal or reinstallation:
  • 4mm, 5mm, 8mm Allen Key
  • 13mm Socket w/ ratchet
  • #2 Phillips Screwdriver
  • ISIS Crank Arm Puller
  • Deep Hollowtech External Bottom Bracket Socket
  • Deadblow Hammer
  • 12" Adjustable Wrench
  • Split Ring Pliers
If you are looking for step-by-step text instructions proceed below!
We also have a  "limited toolset" version if you need to accomplish this in a hurry and are unable to remove the chainring!

Terminology

Some terminology that will be used throughout this guide:
  • Drive Side: right side of the bike - with chain, chainring, derailleur and cassette
  • Non-drive side: left side of the bike, with the brakes on it
  • Crank: The arm attaching the pedal to the axle of the motor
  • Chainring: The front sprocket on the drive side of the motor - drives the rear wheel via chain and cassette
  • Chainring Spider: Attahed the chainring to the motor.