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Arm, valve rocker

Crankshaft

Rod-connecting

Retainer valve

Valve Tappet. The tappet rides on the camshaft lobes and activates the push rods and valves.

Ring Set, 13.0 and 13.5 HP Vertical, L-Head Cast Iron Bore

Ring set

Piston pin-standard

Breather assembly

Keeper-valve

Connecting Rod, 3.5 & 4 HP Max Series, 3.5-6 HP Quantum (12 CID), Prior to 97011300 Date Code, Vertical

Intake valve

Cap valve spring

Internal engine intake valve
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