Tecumseh 8 HP Hmsk80-155480s Horizontal Shaft Engine UsedTECUMSEH 8 HP HMSK80-155480S HORIZONTAL SHAFT ENGINE- USED. Good engine, may need tune up/ carburetor work. Crankshaft is 2 1/4″ long and 3/4″ wide, is tapped and keyed. Engine has NO OIL-NO OIL. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power.