Ha, "OMC" is boat motors... I meant Onan, Ive done it before on points for a generator too, one heck of part difference, lol.
Thanks Franktrain
A bit heavier on the cabin that I thought. Nice, and I'd wanna say the second most common brand ...?
Looks like you're not procrastinating either
If it sat I'd have flooded it and/or gave time for oil to get to the valves. Valves might just be lightly stuck by fuel or oil varnish. Flooding and/oil lubricates and cleans plus starting action vibrations can free them usually. Flooding can also help seat new rings, or reseat them. I don't know why exactly, just that when new motors intially just wont start, flooding has worked. (old hot rodder did it a few times and it has been a fallback method ever since...could just be stoich takes more fuel that is beleivable with extra blowby of new or rusty rings/walls.)