i have a 2006 yamaha wolverine 450. i recently pulled the carb apart and cleaned it as it would not idle. previous to the carb clean it would start up, idle, but then as soon as it was given any throttle it would stall out. After the carb clean and the fuel tank being emptied and fresh fuel being put in, it starts and idles extremely high and when the choke is on it idles even higher, and if given throttle it idles even higher without choking itself out or stalling. i have the idle set as low as it can go and removed the plate on the carb and the throttle cable is resting against the stop. I have adjusted the air fuel mixture screw, which was 2 turns out to begin with. I opened it to 4 turns out and it didnt make any differnce to the idle. In order to get it to idle down i have to cover the air intake hole about 80% but then when i give it any throttle it stalls out.