Alright, went to mow the lawn today, and well the rider was acting up. It would start, smoke like a mofo then shut off. I checked the oil and voila found my problem. The crank case was FULL of gas/oil mixed.
I'm thinking I need a new carb, or to rebuild the one I have. Anyone know where to either get a rebuilt carb or a carb kit for a 12hp Briggs?