Quote:
Originally Posted by jimbob200521
I'd bet a dollar it's the fuel pump. Seems like a common issue with that tractor/engine. Not hard to fix, just annoying. Pull your oil dipstick and smell it, I bet it smells like gas. Order a new pump, install it, and be done with it.
But whatever you do, drain that oil/gas asap! Gas in the cylinders/crankcase is bad bad bad for a machine.
Good luck! 
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Ryan is right. If your still getting gas in the crankcase then it may be the fuel pump. HOWEVER, that doesn't explain the gas coming out of the exhaust. I had a fuel pump one time that was starting to disintegrate. Kept plugging the needle valve in the carb and flooding the motor. My 682 just did the same thing. I ordered a carb kit and a fuel pump for mine. I don't like to tear things apart twice.