Line up one of the castor wheels with the holes on the front legs of the wheelchair. Align the front frame with the castor wheels.

Make sure the guide knob on the castor wheel faces forward; the front frame must fit perfectly with the guide knob.

Insert one long bolt through the top-most hole connecting the front frame, castor wheel, lawn chair, and main frame.

Using pliers and the 10mm wrench, securely fasten a nut to the bolt and repeat on the other side.