Well, I'm selling this tractor and I hate to dump more money into it but I don't want to sell someone a ticking time bomb either. I did some searching and I tried Pats Small Engine Plus for parts. I ordered a new head, push rod, front and rear seals, exhaust gasket, (4) head bolts and a new starter gear for a total of about $250 shipped. I called a local machine shop that works on small engines but they said i would be better off replacing it...I kinda figured that was what they were going to say. Now me and the dog gotta look for the big brown truck.