Question about 2003 Yamaha YZ 450 F
Ck the Exhaust valve sometimes it will tighten up after someone dose a adjustment in some cases just over time and ck compression it should be at least 100 psi to run. to ck valves set the motor to top dead center on the intake stroke or the valves will be tight on the ex stroke
Posted on Aug 31, 2010
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Posted on Jan 02, 2017
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