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how can i fix the timing on a loncin py90 ?

my py90 won,t start,think its the timing

paul
September 2009
sparking,fuel getting to carb,tryed everything

paul
September 2009
john,,ive try every thing apart from the timing,son washed bike and it will not start

paul
September 2009
I think you'll find the ignition timing is set, as the flywheel is keyed onto the crankshaft....its also very unlikely for the valve timing to slip. Check for a spark at the plug, and evidence of fuel in the carburettor.

John
September 2009
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