Although it's rare to need a crank swap, this guide will walk you through the process in case it's necessary.

What You'll Need:

  • Crank puller
  • Allen wrench
  • Grease
  • Torque wrench (optional, but recommended)

Step 1: Remove the Old Crank

  1. Remove the chain from the crank by resting it on the rear cassette (no need to remove it from the bike completely).
  2. Using an Allen wrench, remove the center bolt of the crank. Apply force as needed to loosen the bolt.
  3. Screw the crank puller tightly into the crank arm.
  4. Tighten the crank puller's center screw to push the crank off the spindle slowly. Use steady force as it may require significant pressure.
  5. Once the crank pops off the spindle, remove the crank puller.

Step 2: Replace the Crank

  1. Apply grease to the outer part of the spindle, avoiding the inner section as the crank will push the grease inward.
  2. Slide the new crank onto the spindle, ensuring the crank arm points in the opposite direction of the other crank arm.
  3. Place the previously removed bolt back on the spindle and tighten it. The crank will move back down the spindle, and this process may take some time and force. A torque wrench is recommended for best results.
  4. After fully tightening the crank, replace the chain.

With these steps, you've successfully swapped the crank on your Euphree Electric Bike. Enjoy your smooth and comfortable ride!