If you have to ask this question. It is in you best interest to take it to a shop. I am in noway doggin on you. Its not a simple process to rebuild a motor. Or to correctly build a reliable motor.
Might want to post on http://www.grizzlyforums.com. Its a site dedicated to the Yamaha Grizzly.
Where do you add water in the Yamaha grizzly 660?
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looking for valve adjustment for a 1998 600 Grizzly by Yamaha
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67.9mph
yes
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got a new grizzly 700 yamaha but not sure wat oil to use, what kinda oil does it use