1. Remove the setting screw in the middle of the wave wheel with a screwdriver.
2, bend the wire to make two small hooks or use two flat screwdrivers.
3, symmetrically insert the gap around the wheel, gently pull or pry, and change the symmetrical direction. Slowly force, the wave wheel will slowly move upward from the wave wheel shaft, and the wave wheel will be taken out. Be careful not to apply too much force at once.