Hey I'm new to this forum and I have a few quads but my raptor 350 seems to be a problem. I have a raptor 350 with many mods including yoshimura exhaust, re jetted , and many cosmetics. But I'm having an issue with my carb, I know it's running lean and I was wondering where the air/fuel mixture screw is. Also I hear a rattling which I am guessing is a timing chain issue, which I have no idea what it does. So I was hoping someone can tell me how to adjust it cause when I drive at high speeds I hear a rattling. And I know it is located near the top left of the block behind a plate with two screws. If anyone can get me help that would be appreciated because it cost me too much as is.
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