The Crankshaft / Piston assembly is constructed from several parts from which the Crankshaft Comp. is the most expensive.
thirty-six components are shown in this Atc185s 1983 (d) Usa Crankshaft / Piston exploded diagram.
A sample from the products for the Crankshaft / Piston include: Key,wood 25x14x4, Crankshaft,l., Needle Brg, Needle Brg.