Question about Yamaha YZ 450 F Motorcycles
When u set the bottom timing mark on the T mark set the ex cam with mark first level with the head then from the mark on top of the ex cam count 15 pins on the cam chain to the top mark on the intake cam the second mark will not line up with level with the head it will be lower than head after u set the timing turn the motor over by hand as long spins free you should be good you should have 88psi +
Posted on Sep 16, 2010
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Posted on Jan 02, 2017
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