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Hi I'm new to carburetor jetting brought my trx this summer had a 04 yfz was not impressed found a trx with brand new top-end had a FMF exhaust on it that was dented and smashed so I brought a Empire 12 inch full exhaust but can't figure out the jetting has a K&N air filter open air box lid. So if anyone familiar with jetting in Central Michigan I would appreciate the help . I believe it has the Stock pilot jet and a 185 main jet and that was running too rich. I put a 180 main jet in that ran to lean.
 
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