A few weeks ago I started blowing white smoke like crazy on a Toro rider and the engine soon cut out. I thought I seized the engine, called a dealer and they said it sounded like a head gasket which does go on those things. Come to find out the carb had clogged up with crap and the gas blew past it and entered the oil causing the smoking. A good "tune-up" and carburetor rebuild/cleanout solved the problem got the machine back and it's running great. Everything they did and changed was around 350 bucks I believe worth it to me to keep the mower running for now.
