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Mend Yamaha PY90

starting?

my py90 is not starting please can you help

john52
February 2009
they are prone to piston ring wear i would have a compression check done.they use a yamaha t80 townmate piston i rebored one the other day so i know !also check the valve clearances set at .05mm on the inlet and .10 mm on the exhaust

adam bike doctor
February 2009

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