Originally Posted by
LarrBeard
Technically you are working on an F-head engine, the F-134. The flathead has both intake and exhaust valves in the block, the F-head had the intakes in the head.
As GMWillys said, look for a little short bolt under the carburetor. Once you get all the bolts out, just find a corner and pry. It is probably glued down with the epoxy grade Permatex. Once you get the head off, look it over for cracks and for a warp.
P. S. It will "almost" run if you forget to put that little short bolt back. My rebuilder didn't and it took us a LONG time to find it.
Good luck.