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CARBURETOR
DC
nCUULo,un.
MIXTURE JET
DESCRIPTION
The carburetor is a single barrel, side-draft type with a
cleanable metal screen air intake filter/spark arrester.
The choke is operated by a 12 VDC solenoid. The choke
solenoid is activated when the start switch is depressed and is
controlled by the I.C.M.
Air ScreenJFlame Arrester
The air screen can easily be removed. Clean after the first 50
hours of operation and every 100 hours from then on. Clean
the air screen in a water soluble cleaner such as GUNK.
CARBURETOR WITH SPEED ACTUATOR
DE-RICHENING
SCREEN
REMOVE E-R1NG TO
ACCESS THE SCREEN
FOR CLEANING
/+---n"---:'Ilr-
BOWL
DRAIN
'ArTHATn.
LEVER
KEEP THE LINKAGE
WELL LUBRICATED
Fuel Overflow Chamber
Excess fuel drains into the fuel overflow chamber but is
drawn out again at start-up. This chamber should be kept free
of contaminates. Cleaning every 250 operating hours should
be sufficient unless there is a fuel problem.
Idler Mixture Jet
Adjustment is performed with the generator operating.Screw
the jet slowly in until it seats, then back
it
out 2 to 3 turns.
Maximum adjustment is 5 turns.
NOTE:
An idle mixture jet adjusted too far off its seat can
induce a sooty exhaust discharge at engine start-up and
shut-down.
De-Richening Valve
The de-richening valve closes off a fuel port that is supplying
additional fuel on a cold start after start up. This is a thermal
electric device that slowly moves a needle outward when
DC power is applied after start up to close this fuel port.
To check this valve, remove from the carburetor (cold) and
apply DC voltage across its electrical connections. The
devise should get hot and the needle will slowly move
outward. the devise will remain hot during engine operation
Carburetor Bowl Drain
A bowl drain slotted plug is located on the lower right comer
of the carburetor bowl. This is located just inboard of the
actuators ball joint/clevis.,
-...v:
WESTERBEKE
Engines
&
Generators
35
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