The most expensive part in this assembly is the Crankshaft,comp.
Some items from this specific schematic: Crankshaft,comp, Clip, Piston Pin, B/brg Rad N/com, Ring Set, Piston (std.) (teikoku).
This Crankshaft - Piston diagram displays the required parts for the Z50j5 Monkey Japan Crankshaft - Piston.