TECUMSEH HMSK80-155296K HORIZONTAL SHAFT ENGINE USED- DUAL SHAFT. For parts or not working-good engine, runs with gas sprayed into carburetor, may need tune up/ carb work. Crankshaft is 2 1/4″ long, 3/4″ wide, is tapped and keyed. Reverse crank is 1″ long, 5/8″ wide and is keyed. Engine has NO OIL.