This weekend my 01 Rancher started acting up. The carb was dumping fuel into the airbox, so much that it filled my airbox 2/3 with gas after a couple miles. I pulled the airfilter and you could see the fuel spilling from the carb and into the airbox, when I turned off the fuel naturally the fuel stopped pouring out of the carb. I pulled the diaphram and needle both looked fine. I removed the bowl to inspect the jet and float, both looked fine. There were a few pieces of dirt in the bottom of the bowl but thats it. I just couldn't figure it out. Then I pulled off the carb breather hose, put it back on, and bingo the gas stopped pouring out of the carb. The atv started up but when I gave it gas the motor would sputter. After half an hour of sputtering the atv started to run like normal, but now the atv has a tough time idling.