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View Full Version : Yamaha Worrior issues



trikes4life
05-24-2010, 06:24 PM
here's the deal 89 Yamaha warrior 350. Its running lean, and hot. the carb is clean and has a fresh rebuild. i went from a 145 main jet to a 148 to 150. still running lean and it sputters and spits on the top end. i checked for air leaks found none. And im running a full chrome DG exhaust. any ideas and should i try moving the needle position?

trikes4life
05-26-2010, 12:50 PM
I have come to the conclusion the timing chain needs to be replaced is way out of spec.