Subaru Robin EX30 - Manual (Page 11)

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4-14 CARBURETOR
The engine is equipped with a horizontal draft
carburetor. The carburetor setting is calibrated after
careful testing for optimum all-round performance
(including starting, acceleration, fuel consumption,
output power characteristics). Special attention is
also paid to the general-purpose use of the engine.
(For further information, refer to page 51, section "12.
CARBURETOR")
4-15 AIR CLEANER
The engine uses an air cleaner that is quieter than
conventional ones. A semi-wet urethane foam element
is used in the urethane foam air cleaner.
4-16 DECOMPRESSION SYSTEM
The automatic decompression system is mounted on
the camshaft. It opens the exhaust valve before the
compression top, thereby alleviating the compression
pressure and reducing the force required to pull the
recoil starter.
During engine operation, the decompression system is
overpowered by centrifugal force and compression is
fully utilized to produce power.
EXHAUST
VALVE
ROCKER ARM
(EXHAUST VALVE SIDE)
RETURN SPRING
CAMSHAFT
COVER COMP
CLEANER
BODY COMP
URETHANE
FOAM
ELEMENT