Have a 96 sportsman 500 very low miles. Carb rebuilt several months ago and ran fine very little time and it set for approx. 6 weeks. Now starts and runs till approx. warmup and then stops. let it sit 10-15 minutes and same thing runs till warm and stops. Any ideas problem. Tried choke while running and immediately stops. Ideas appreciated.

 

Starting with the easy stuff first, have you checked the gas cap vent tube?