The 25 4 stroke Bigfoot is looking like a bummer. I bought is second hand after the cute little helpless gal said her daddy bought it new and they only tried to run it twice but its too big for them. Of coarse it was said to have less than two hours use. Now I find screw heads buggered up, a thermostat frozen and now wet oil all over the engine when I run it. Looks like the oil might be coming from under the flywheel. Is there an oil seal on the shaft which can be changed without breaking down the engine?