GAS CARBURETORS
KOHLER #A
-
271105 (KG1) GAS CARBURETOR
The model
KG1
is
a venturi and nozzle type straight gas carburetor suitable for use with Natural
gas and LPG.
This carburetor is usuall
y
used with the Model B secondary regulator (Kohler #A
-
265082)
and with idle and balance line connections.
Operation: The carburetor features a separate
gas system for enriching the fuel mixture during start
-
ing.
When the choke plate is closed, gas flows thru the special starting orifices.
The starting mixture
can be varied to facilitate easy starting in changing weather conditions by means of the starting adjust
-
ment screw. Since the main fuel system is blocked and the engine operates on the ,'rich" starting
mixture when the choke plate is closed, the choke must be returned to the full open position soon after
the engine starts. The choke plate is strictly a two position device with no intermediate positions
--
it
is either in full open or full closed positions.
When the choke
is
opened and the throttle plate
is
advanced beyond the idle speed range, gas
enters the carburetor thru the gas nozzle in volume proportionate to the velocity of air through the
venturi. The velocity is, in turn, controlled
by position of the throttle plate. The balance line com
-
pensates for restrictions, such'as clogged air cleaner, to keep the fuel
-
air ratio constant.
When the
throttle is returned to the idle position, the velocity of air may not be sufficient to induce enough gas
to sustain operation. The KG1 carburetor has a separate idle fuel system which allows continued
operation at slow idle speeds.
Adjustment: Carburetor (and regulator where applicable) adjustments are made in the factory and
readjustment should not be necessary until carburetor is reconditioned or disassembled for some other
reason.
The initial adjustments on carburetor (and
B
regulator) are:
SIDE
-
314'' PIPE TAP
ON REGULATOR
1
FIGURE 12
-
3
--
KG1 GAS CARBURETOR
-
ADJUSTMENTS
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