I just bought a 2006 HammerHead two seater adult gokart. Iv not actualy got around to messing with it yet. The guy i bought it from said it kept jumping time and thats why it wouldnt continue to run. He had all new pullys tensioners and chains replaced, he said he has replaced the starter clutch twice.( his son was the only who rode it. Im guessing he was reving it up and throwing it in gear). Is there a difference between starter clutch's on a 150cc and 250cc?