This has a 1" x 2-3/8" shaft on it. If you buy one of our engines with the step shaft, you would need to purchase the sleeve-78-1x220 to work for you. If you buy the engine with the 3/4" diameter shaft, you would need to buy the sleeve-34-1x220 to make it work for you. The L-head engine will work in this unit as well.
