The Crank - Piston - Valve - Camshaft (ef1200) is made up of components including this Crankshaft Assy which is the most expensive.
thirty-two components are shown in this Ef1800 Ef2600 Ef1200 Generator Crank - Piston - Valve - Camshaft (ef1200) exploded diagram.
Some items from this specific schematic: Retainer, Valve Spring, Pin, Piston, Valve, Intake, Valve, Exhaust.