Two days and a manual later.

I removed the bakes on mud nests and started to dismantle the engine. Parts were stuck and needed heat and persuasion to come loose and out. Everything was covered in black goo from the oil residue. I found a live larva when I cleaned the carburator intake port. The carb. butterflys had to be pressed out in the vise. After cleaning and re assembling I got the engine to run on prime. Finally I gave up and found a manual on line which pointed out a few things I was doing wrong. After adjusting things per the manual I flooded it real good. I cleared the excess fuel out and hit it with the starter and it fired right up and kept running. Now I have a very powerful engine I'll most probably never use or give it back to my son who most probably will never use it again. I will seal it up so the bugs can't get into it again.