TECUMSEH HSSK50-67261L 5 HP HORIZONTAL SHAFT ENGINE With ELECTRIC STARTER USEDUsed Tecumseh HSSK50-67261L 5HP horizontal shaft engine. Good engine may need carb work and recoil repair. Crankshaft is 2 3/8″ long with a 3/4″ diameter, it is keyed. Reverse crank is 1 1/2″ long with a 1/2″ diameter, it is keyed and tapped..