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5A.5
Section 5A
LPG Fuel Systems
5A
4. Inspect the overall condition of the fuel
enrichment hose attached to the carburetor. It
must be free of cracks, deterioration, and
damage. Disconnect the fuel enrichment hose
from the carburetor fittings to clean or check
condition as required. See Figure 5A-6. Replace
with a new Kohler high pressure hose (LP rated) if
the condition is questionable in any way. Secure
new hose using new clamps.
Figure 5A-6.
5. Clean all parts as required, use a good carburetor
cleaner, following the manufacturer's instructions.
Blow clean, compressed air through all the
passages. Do not poke or probe into the load
block assembly as damage can be done, resulting
in serious operational problems. See Figure 5A-7.
Figure 5A-7.
Nikki Carburetor
1. Turn off fuel supply at tank.
2. Remove the air cleaner, breather hose, fuel line,
vacuum hose, choke, and throttle linkages.
Remove the nuts, carburetor, and gaskets from
the engine. Discard the gaskets.
3. Remove the fuel transfer chamber cover by
removing the three screws. See Figure 5A-3.
Carefully remove the cover and gasket. Discard
the gasket.
4. The main jet is fixed and nonadjustable, but may
be accessed for cleaning by removing the rear
plug and sealing washer. Discard the washer.
5. In order to clean the off-idle transfer passages
and carburetor thoroughly, use a good carburetor
cleaner and follow the manufacturer's
instructions. Blow clean, compressed air through
the passages and make sure all are open before
reassembling. Do not use wire or metal objects to
clean passages or carburetor body.
LPG Carburetor - Inspection
1. Inspect the carburetor body and removable
venturi (Impco carburetor) for cracks, holes, and
other wear or damage.
2. Check the choke shaft (Nikki carburetor only) and
the throttle shaft for wear and free movement.
NOTE: Do not attempt to disassemble or
remove either shaft from the carburetor
body, including the mounted clamp
brackets on Impco style carburetors. The
screws, attaching the choke and throttle
plate to their respective shafts are staked
or bonded to prevent loosening. The
plate(s) and shaft(s) are not available
separately. If detrimental wear or
damage is found in any of the parts, the
carburetor should be replaced.