Grab the ZeroWobble+ Hitch-Mount, put the washer on the head of the bolt and insert it into the hitch pin hole. Thread into the ZeroWobble+ handle onto the opposite end of the bolt. Do NOT put a washer on the threaded end of the bolt. Tighten the bolt with a socket wrench while holding the handle on the nut with your other hand until the connection to the hitch is solid with no play. Do not over-tighten. For geeks only: Max torque 55 ft-lbs. but 25 ft-lbs. should be enough. Make sure the barrel nut on the handle recesses all the way into the hitch pin hole until it stops against the MotoTote tube inside the hitch. This is critical to eliminating any shake by clamping the square tube to the side wall of the receiver. NOTE: You WILL be able to lift the end of the square tube straight up. This is normal but there should be no rotational movement.