TECUMSEH HMSK80-155545V 318CC HORIZONTAL SHAFT ENGINE USED- DUAL SHAFT. Good engine, runs with gas sprayed into carburetor, may need tune up/ carb work. Crankshaft is 3 3/8 long and is stepped. The 1st 1 5/8″ is 1 1/4″ wide, next 1/2″ 1″ wide and last 1 1/8″ 7/8″ wide. It is tapped and keyed. Reverse crank is 1″ long, 5/8″ wide and is tapped and squared on 2 sides. Engine has NO OIL- NO OIL- NO OIL.