I'll bet a $100 you have a short in a wire....My buddy had a perfet running shee and he took it all apart to paint.Than it would not start.we did wire testing and replaced parts from my machine.no spark!!! took it to a yahama dealer he got it back the next day running like a champ.There was a bad wire.if you don't know what you're doing,good chance you'll be beating your head agaist the wall for many long nights in the garage.