Things You'll Need
Instructions
Unscrew the axle and wheel guard using two hex keys. Once you unscrew them, remove them from the wheel base.
Install the two washers on one end of axle.
Feed the axle through one end of the wheel base. Place the spacer on the other end of the open axle. The spacer is a small silver bolt used to take up the space between wheel and base.
Place the wheel back onto the axle followed by the second spacer. Use the hex key as a guide to help keep everything aligned correctly.
Screw the bolts back onto the end of the axle and spin the wheel to make sure it moves correctly.