Hello, I have a 2001 Polaris Xplorer 250 two stroke. I have had starting problems. I got the atv in 2002 and I haven't went through the carbs yet. When starting it takes about 10 to 30 minutes to start and every time I park it, I have to cut the fuel off and run it out of gas, which can take up to 10 minutes. I was trying to start it today, after it was rode for about 30 minutes prior to, and I had starting problems. I took the air filter cover off and it back fired and knocked the exhaust pipe off where it connects via spring near the head. It ran for about 10 more seconds and cut off, and would not do anything but turn over. Can someone help me.