I just brought home a crusty 1985 r80rt and the gas cap spins around when i turn the key. The whole cap just spins and spins, either direction. The key does nothing, but the cap stays flush. What am i doing wrong?
When I helped a friend inspect a bike his bike had one of those spinner ones to prevent gas theft. Spray something like WD40 into the keyhole to try and free up the metal that has welded its way together.