Author: Maxfind via YouTube
1. Screw out the screws on the motor.
2. Knock end of the truck to take our motor.
3. Knock the bear down of the motor
4. Prepare the new PU (with magnetic).
5. Install the bear to the new PU tire.
6. Install the new PU tire.
7. Align the screw holes, push it to connect.
8. Srrew the screws into the motor.