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Step 5: Remove the brake lever
a. Loosen the screws on the brake lever with a 5 mm Allen key.
b. Then remove the brake lever.
Step 6: Remove the assist switch
a. Loosen the screw on the brake lever with a 5 mm Allen key.
b. Then remove the assist switch with a 2.5 mm Allen key.
Step 7: Remove the brake lever on the other side
a. Repeat step 4 and 5 on the other side of the handlebar.
b. And then remove the handlebar from the bike.