I have a 2001 Yamaha raptor 660R and I've put 2 starters into it and both of them have blown up they turn into a million pieces inside. had tested them to ensure they spin and they both did after installation it starts but starter stays engaged while indling then lock ups and kills the four wheeler it won't even bump start. then we take the bike apart and pull the starters out and take those apart and they are broken into a bunch of tiny pieces inside so far have only replaced the starters. should I purchase a relay or would it be something internal that would be causing the problems. when pushing the start button with the bad starters the starter and relay just click the starters will not spin anymore either after taking them out they spun by hand before taking them out and now they are almost welded together inside I have a new starter that was more expensive than the other two but worried about putting it in due to the fact that it has already blown two of them.