How to Install 20T Speed Upgrade

Loosen the set screw in the stock 15T motor pulley

Remove the motor pulley

You can use a flat head screw driver to create leverage if you cannot easily pull it off.

Add two drops of Loctite to the motor shaft

Remove the set screw in the 20T motor pulley and add Loctite

Push the motor pulley all the way onto the motor shaft until it is flush with the end of the motor shaft

Tighten the set screw to secure the motor pulley

Loosen the four motor mount screws to add the wheel pulley

Add the wheel pulley and belt

Pull back on the motor to tension the belt

Secure the four screws while holding the motor in this position

Your bolts should be in the same position as shown. With the large motor pulley you can have less belt tension, so do not over tighten the belts. You should be able to deflect the belt a few millameters with your finger

Add the wheel and secure with a washer and locknut

The order of parts on the truck should be as follows, from inside to outside:

Washer, wheel pulley, wheel, washer, locknut

Repeat the previous steps to install the 20T motor pulley on the other side