First of all i am new to this forum, which thank god i found, and also to owning a 4-wheeler. I have just purchased a yamaha timberwolf which had been sitting for a while. After about 3 hrs. of messing with it i got it to run after i cleaned out the carburetor. Two days later it quit on me. I then decided to rebuild the carb using a kit from a local atv shop. My problem is that i can't get it to idle correctly. Is there a factory setting that the carb has to be at to work correctly? Also the pilot-air fuel mix screw keeps coming out on its own. Other the screw itself is their supposed to be an o-ring to keep it from doing this. Any help would be appreciated. thanks in advance.