11hp Tecumseh horizontal shaft engine. Runs strong. Came off generator so it has a tapered 1 shaft and the gas tank for it is off the generator too. Missing pull start, I just wrap a rope around it. Cant beat the price for it even after getting a pull start if you want online. Goes for at a minimal 200.00 any where else. willing to trade for same size engine with 1 straight shaft with key way.