Hello everybody. First post here. Just picked up a 2001 grizzly 600. With 1500 miles and in good shape. Bought it for $1000 dollars. Runs and drive, just had a rough running problem. Would idle fine, but when you would romp on the throttle it would bog, pop and backfire while shooting flames. I then replaced the carb, carb boot, and the fuel petcock. Runs better, throttle response is good, pulls good, but sometimes when just running at 1/4 throttle, putting along, it’ll cough and fall on its face and pop. I have since noticed it has a full supertrapp mudslinger exhaust. I’m thinking it’s running lean. So I was going to rejet the carb, and hope that solves it. I’m running the air fuel screw out 3 turns. Can anyone confirm this for me and maybe point me in the right direction as to what size jets to use? Thanks everybody!

Hello everybody. First post here. Just picked up a 2001 grizzly 600. With 1500 miles and in good shape. Bought it for $1000 dollars. Runs and drive, just had a rough running problem. Would idle fine, but when you would romp on the throttle it would bog, pop and backfire while shooting flames. I then replaced the carb, carb boot, and the fuel petcock. Runs better, throttle response is good, pulls good, but sometimes when just running at 1/4 throttle, putting along, it’ll cough and fall on its face and pop. I have since noticed it has a full supertrapp mudslinger exhaust. I’m thinking it’s running lean. So I was going to rejet the carb, and hope that solves it. I’m running the air fuel screw out 3 turns. Can anyone confirm this for me and maybe point me in the right direction as to what size jets to use? Thanks everybody!