A few of the earlier America's had a problem with the speedo and when I say few I mean few, but since then nothing. First I would look at your speedo cable. There is a screw holding the cable to the cable speedo drive at the front wheel. Unscrew that and pull the cable out of the drive to see if the end has broken off or bent, next take a look at the other end going into the speedo. If both ends are okay then you've got a problem. If not the cable is a lot cheaper to buy than a new speedo.
