Subaru ER12 - 4-5 Piston Rings; 4-6 Campulley; 4-7 Valve Arrangement

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4-7 VALVE ARRANGEMENT
This engine has a belt-driven overhead cam and
overhead valve construction, with a single cam
performing both intake and exhaust operations
4-6 CAMPULLEY
The campulley is made of special nylon They are
constructed as a single piece The campulley is
provided with intake and exhaust cam, and the
decompression release lever is mounted on the
sprocket shaft end side
EXHAUST VALVE INTAKE VALVE
TOP
RING
OIL
RING
1
2
TAPER
THREE-PIECE
CONSTRUCTION
1
2
4-5 PISTON RINGS
The piston rings are made of special cast iron The profile of the top ring is a tapered face
The oil ring is designed for better sealing and less oil consumption, in combination with 3 pieces