i have a 10.5 hp briggs on a 32" mower, and almost everytime i use it after a few mins. it begins to blow a lot of white smoke out of the exahust. at first i thought it was oil getting into the head and burning, but shouldn't that be a black/blue cloud of smoke? i also thought that it may have a bad head gasket? i am left clueless on this one. engine is OHV single cyl. stored inside garage bay, less than 1 year old with not a lot of hours on it. it is still under warranty and i am going to bring it in to get it fixed on friday, but kind of can't do with out the mower. Just wondering if it was something i could fix quick in my shop? thank you any help?