Question about 2001 Yamaha WR 426 F
Sounds like a valve has stuck in the open position, or it needs the shims checked, also check the decomp cable is not holding the decomp lever open .
A push start might even free up the valve, if it does use an upper cylnder lube like moreys.
but the shim clearances are critical
Posted on Mar 25, 2011
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Posted on Jan 02, 2017
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