CARBURETOR
DC
REGULATOR.
CARBURETOR
WITH
SPEED
ACTUATOR
CARBURETOR
The carburetor
is
a single barrel, side draft type with a
cleanable metal screen air intake filter/spark arrester.
The de-richening valve
is
operated by 12VDC. Its purpose
is
to close off a fuel port reducing the fuel mixture going into
the engine after a cold start. The valve will be hot to touch
during engine operation.
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.
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.
Idle
Mixture
Jet
The idler mixture jet
is
factory adjusted and plugged.
De-Richening
Valve
The de-richening valve closes off a fuel port that is supplying
additional fuel on a cold stmt after start-up. This is a thennal
electric device that slowly moves a needle outward when AC
is
applied to the device after start-up to close this fuel port.
To
check this device, with the engine running, measure the
AC voltage across the two connections.
It
will be a low AC
voltage in the 25VAC
rm1ge.
The device will get warm/hot to
the touch
as
the engine operates as voltage
is.
continually
being sent to the device.
WINDING
OHM
VALVE:
20
OHM
(APPROXIMATELY)
Carburetor
Bowl
Drain
A bowl drain slotted plug
is
located on the lower right corner
of
the carburetor bowl. This is located just inboard
of
the
actuators ball joint/clevis.
NOTE:
Ball joint linkage between actuator and throttle. Lube
periodically (use graphite lubricant) to maintain smooth
operation.
Engines & Generators
22
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