TECUMSEH HMSK80-155545V 8HP ENGINE HORIZONTAL SHAFT USED from MTD/YARD MACHINETecumseh model # HMSK80-155545V 8 HP Engine. Came off a Yard Machine as pictures show. One of the pictures show “Electric Start”- it DOES NOT have it. Crankshaft is stepped -it is 3 5/16″ Long overall, 1 3/8″ diameter for the first 1 5/8″ stepping.