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hey i just got a ninja 500r with 2100 miles on it... i have a problem with the idle.. the grip seems to be too tight. when i rev it it does not come back to its original spot quickly. VERY SLOW... i dont know howto explain it well but hopefully someone kinda knows what im talkin about.. rev with the throttle and stays revved due to grip.... how would i looses that? any HOWTO sections or pics? thanks

You'd have to loosen that by lubing up the throttle cable... Chances are the cable is really dirty though and I'd suggest replacing it. If you're not sure you can keep it routed the same way and make everything work like it was when new I'd probably have a shop do it.