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i have a yamaha vx 535 ?

when i shut off from approx 50 [when hot] it backfires,any poss cause,solutions much appreciated
terry howard, July 2011
Hi, if the bike still has standard exhausts then it could be a weak mixture, find the air screw, turn it in (clockwise) slightly to richen the mixture.

Ted, July 2011
it sounds like its either got a leak in the exhaust system somewhere and or it may be running a bit weak.

adam bike doctor(of milton keynes motorcycle centre), July 2011
link Click here to see other fixes for Yamaha.