I'm sorry to cross post, I am new to this site and I posted my original post on this engine, in the general discussion forum rather than the repair forum. I think this repair sub-forum is the more appropriate place for this thread.

I have a Tecumseh H35 engine on an old tiller. I noticed that there is a small amount of oil surrounding one of the head bolts and when I look around the head gasket in one spot I notice some more oil. I am thinking that I must have cracked rings and a head gasket and/or warped head. Does this sound right to you guys?
I have not checked compression with any sort of guage or test equipment but it does feel like a fairly normal pull and the engine still runs.

If this is the diagnosis I would appreciate help putting together a materials list.
Off the top of my head I think I would need the following:
Head
Head gasket
Rings
Gaskets for block which will be disturbed in the process of removing piston for ring replacement.

Also, what is the likelyhood of the block being warped rather than the head? Should I have the block planed for this repair?

Thanks.

Chances are neither the head nor the block are warped. The head may be a little loose and possibly the head gasket may need to be replaced.

Is it using excessive amounts of oil, and smoking a lot when run?

There may not be any problem with the rings either, removing the head to inspect the gasket will also allow you to check the cylinder for any scoring and wear. You will at the very least need a new head gasket.