This engine might be the same as that Tecumseh ...might be worth picking up a spare for the cheap price while some are still available..I think these are priced low due to the crankshaft having the special taper for a generator..
https://www.surpluscenter.com/Engin...s/10-HP-Tecumseh-Generator-Engine-28-1741.axd
https://www.surpluscenter.com/Engin...s/10-HP-Tecumseh-Generator-Engine-28-1741.axd