-
7
-
Fig.4-6
Fig.4-5
4-7 VALVE ARRANGEMENT
This engine has a chain-driven overhead cam and
overhead valve construction, with a single cam which
has individual profile for intake and exhaust to
perform high output.
Fig.4-7
EXHAUST VALVE
INTAKE VALVE
Fig.4-8
4-8 CYLINDER HEAD
The cylinder head is on aluminum die-casting with a
dome-shaped combustion chamber. The intake and
exhaust ports are arranged in a cross direction to
improve combustion efficiency.
TOP
RING
OIL
RING
1
2
TAPER
THREE-PIECE
CONSTRUCTION
1
2
4-6 CAMSHAFT
The camshaft and the sprocket are made of special
sintered alloy. They are constructed as a single
piece. The camshaft is provided with intake and
exhaust cam, and the decompression release lever is
mounted on the sprocket shaft end side.
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.
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