Prepare the bike for maintenance. Remove the battery and hold the power button for 10 seconds to discharge any remaining power.
1. Start by removing the left crank arm. Loosen the bolt with a hex wrench, then insert a crank puller tool to remove the crank arm.
2. Follow the same steps for the right-side crank arm, first remove the bolt with a hex wrench, then insert the crank puller tool into the opening.
3. Test the chain after installing the new crankset. The bike needs to be supported on a stand to elevate the rear wheel, and the crank must be rotated backward to rotate the rear wheel. Ensure the chain is properly connected to the chainrings.