Do not use a worn hitch ball, it is unsafe and must be replaced. Take care not to damage actuator when backing up towing vehicle for hook-up. Lower trailer tongue until ball rests in ball socket.
Close release handle.
The release handle will close freely with finger pressure when ball is properly inserted into ball socket. If the release handle does not close freely, do not tow the trailer. Do not force release handle into closed position. If the ball does not disengage, the actuator is securely attached. Insert padlock or bolt through lock hole for theft protection.