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THROTTLE SHAFT AND LEVER
Check shaft for looseness or binding.
Shutter must be positioned with
THROTTLE SHUTTER
detent reference mar ks on top
parallel with shaft.
DETENT
REFERENCE MARK
THROTTLE SHAFT
Check spring for return action
RETURN SPRING
and binding.
Remove when cleaning and replace
DUST SEALS
with new seals.
SOFT BAFFLE PLUG
Clean with compressed air.
FUEL PICK UP
Clean with compressed air.
MAIN JET
*NON METALLIC ITEMS - CAN BE DAMAGED
BY HARSH CARBURETOR CLEANERS
Loosen screw until it just clears
throttle lever, then turn screw in 1
IDLE SPEED ADJUSTMENT SCREW
turn.
THROTTLE SHAFT AND LEVER
Place detent reference mark to
DETENT REFERENCE MARK
proper location. See chapter
ON THROTTLE SHUTTER
appropriate to specific carburetor.
THROTTLE SHUTTER
THROTTLE SHAFT
Check spring for return action and
RETURN SPRING
binding.
IDLE,
Remove welch plug and blow air
INTERMEDIATE
through air passages.
AND AIR BLEED
ORIFICES
*IDLE MIXTURE
ADJUSTMENT
SCREW AND "O"
RING (If Present)
*MAIN MIXTURE
ADJUSTMENT
SCREW AND "O"
RING (If Present)
The check ball is a non serviceable
item. Clean with carburetor spray and
*MAIN NOZZLE WITH CHECK BALL
low air pressure only.
*NON METALLIC ITEMS - CAN BE DAMAGED
BY HARSH CARBURETOR CLEANERS
IDLE SPEED ADJUSTMENT SCREW
FLOAT SHAFT
BOWL NUT
CHOKE SHAFT AND LEVER
*DIAPHRAGM GASKET
*DIAPHRAGM
ATMOSPHERIC VENT HOLE
Loosen screw until it just clears
throttle lever, then turn screw in 1
turn.
Do not attempt to remove. Blow air
MAIN NOZZLE
through passage.
CHOKE SHAFT
AND LEVER
Check shaft for binding.
CHOKE PLATE
MAIN NOZZLE
Blow air through passage. Do not re-
AIR BLEED
move restrictor if present.
INLET FITTING
*INLET NEEDLE
Proper installation is important. See
AND SEAT
appropriate chapter for procedures.
*FLOAT BOWL
Replace.
GASKET
Must hook over float tab.
INLET
NEEDLE CLIP
Long straight end of clip must face
the choke end of the carburetor.
Check float for leaks or dents. Clean
FLOAT
bowl and adjust float level position
gasket or gaskets.
FLOAT BOWL
*GASKET
Set float to proper level.
Check shaft for binding. Position
shutter opening towards inlet fitting
CHOKE SHUTTER
side of air horn.
Primer bulb models have a Teflon
*INLET
FITTING
one way valve, in or behind the fitting.
*INLET SEAT
Remove and replace.
GASKET
FUEL
*INLET NEEDLE
SEAT AND
Proper installation of assembly is
SPRING
important. See appropriate chapter
ASSEMBLY
for procedures.
Gasket and diaphragm sequence
may be reversed on some models.
Head of rivet must touch inlet needle.
Hole must be clean. On models with
primer bulb, vent hole is very small
and is located off center or in the
primer bulb.
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