Glad there's someone doing a OHH195 Tecumseh in the build-off. You might want to PM [MENTION=339]delray[/MENTION] and chat about your intake set-up and engine. He's the resident guru on these engines and has built a couple of killer OHH195s.
From my experience, with a basically stock engine, valve lash is going to be critical. You can have everything else correct but it'll run like crap if the lash is slightly off. With no governor, you're going to want the valve train to be pretty robust. Briggs Animal springs and 3 piece retainers would be a wise investment along with an HS40 sized adjustable carb. The engine does not like big carbs.
From my experience, with a basically stock engine, valve lash is going to be critical. You can have everything else correct but it'll run like crap if the lash is slightly off. With no governor, you're going to want the valve train to be pretty robust. Briggs Animal springs and 3 piece retainers would be a wise investment along with an HS40 sized adjustable carb. The engine does not like big carbs.