replace the copper contacts inside the starter...it just click right?...when you pull the starter out pull the cover off with the 3 8mm bolts with philipps heads on it...pull out the plunger,,,its the round thing with the spring on the other end...youll see the contact thats worn out...usually the batery side goes first..when you put it all back together its a good idea to dip the bottom of that spring in grease first...it lubricates the lower bearing for ya...........travis