I have a Craftsman lawn tractor with an 18.5 HP Intek Engine (97700 series).
It starts fine; but, after a minute or so, it begins blowing white smoke, then stalls. The smoke is not real thick, but enough to make a haze around the mower. When the mower first begin stalling, gas seemed to be getting in the oil.
I've replaced the head gasket, changed the oil, cleaned the carburetor, replaced the air filter, and checked the valve clearances. Is there anything else I should check before taking it to the repair shop?