Question about 2001 Yamaha YZ 426 F

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Engine was brought to me in a box have everthing to gether but not sure i have the timing right

Need to know how to set timing marks

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Set the crankshaft's T mark right across the mark on the crankcases and place the cam shafts with their marks looking outwards (I think). Inlet camshaft's IN mark should look towards the rear of the bike and exhaust camshaft's EX mark should look towards the front wheel.After placing the chain (not the tensioner) push it from the tensioner's hole with a screw driver to check if the marks are in line with the cylinder's head surface.Bolt down the camshafts to the specific torque.Then put the chain tensioner.

Posted on May 28, 2009


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[Set Static Timing:
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Cam gear has a punchmark on face of gear, and this mark aligns with one single tooth. There is a matching punchmark on the Timing Belt Rear Upper Cover.

Facing the cam gear, the mark is to the upper right. There is an 'egg shape' of the timing belt upper rear cover, in this spot. This punchmark is in that 'egg shape', and is close to a bolt hole. The cam gear mark lines up with the Timing Belt Rear Upper Cover, mark.

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There is 43 teeth in-between the timing mark of the camshaft, and the timing mark on the crankshaft.

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There should be 40 teeth in-between the two cam gears.

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