Air Cleaner - Honda G100K2 Applications Manual

AIR CLEANER

The cyclone aircleaner is composed of a primary cyclone aircleaner and dual element aircleaner.
Air guide fins
Air intake port
Discharge port
Primary air cleaner
Function:
The air guide fins in the upper part of the primary aircleaner cause air from the intake air port to whirl rapidly,
creating a small cyclone. Due to centrifugal force, the coarse particles of dirt or sand are forced to the sides and
bottom of the primary aircleaner body, and eventually go out of the discharge port. Air speed in the middle of the
cyclone is slower, enabling engine vacuum to pull the partially cleaned air up through the center of the air guide to
the dual element cleaner.
This two-stage cleaning is more thorough, resulting in longer service life.
INNER VENT-TYPE CARBURETTOR
On the aircleaner side, the carburetor has an internal ventilation port to the float chamber, to equalize float
chamber pressure by venturi vacuum. The result is that a more consistent amount of fuel can be supplied by the
main jet without being affected by the increasing air resistance, as the dual aircleaner element becomes dirty.
Both "Internal" and "External" vent ports are found on the carburetor.
Pilot air jet
AIR CLEANER SIDE
Carburetors that are "Internally Vented", have the
internal vent passage open to the carburetor and
the external vent passage closed.
Air guide
Internal vent port
Internal vent port
Main air jet
Dual element air cleaner
External vent port
ENGINE BLOCK SIDE
Carburetors that are "Externally Vented", have the
external vent passage open to the carburetor
bowl and the open air and the internal vent
passage closed.
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ENGINES WITH CYCLONE
AIRCLEANER ARE
EQUIPPED WITH
INTERNALLY VENTED
CARBURETTOR