now the starter chain mite be off and/or broke (ouch)or the the pin in the starter gear is broke .when it starts dose it make a hard noise or like something is grinding in there . if you cant start it because of this DONĀ“T TRY . take the left side Casing off and then take starter off . inspect the starter and the chain gears for malfunction if all is fine you got bigger problems that any one can do on this post . take it to a bike shop if you love the bike and pay the gold . (note) this is a rare bike if it is the twin not that there is not that many but people do not want to get rid of them (like me) worth the cash to fix //good luck man//