- 3 -
2-6 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 .
2-7 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 .2-6
Fig .2-5
TOP
RING
SECOND
RING
OIL
RING
1
2
3
BARREL
TAPER
TAPER
1
2
3
THREE-PIECE
CONSTRUCTION
EXHAUST VALVE
INTAKE VALVE
2-5 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 .
Fig .2-7
