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rigamortis rex

cam timing question

6 posts in this topic

I am putting together a 98 wr 400, and I am having troubles determining which mark on the cam sprockets are the ones that you need to line up with the top of the head. any help would be apprciated.

-nick

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there is some type of hyrogliff on the back side of cam sprocket that you will need to decifer, I believe it is a dog, a sun, the moon, a blender, and some playing cards.

god speed young lad!

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the service manual should provide the key to unlock the mysteries of the dog, sun, moon and blender. or just walk into your local yamaha dealers showroom and do a cam installation dance which is rather like a rain dance but can ultimately be life threatening if you and your spectators arent wearing helmets at the time.

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I'll take a shot here. At TDC the cam lobes (exhaust and intake) should face away from one another. When looking at the timing marks on the sprockets, the 3:00 and 9:00 marks (on each sprocket) should be parrallel (or close-mine never were exact) with the head.

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