Float Bowl Service; Float Bowl Drain - Tecumseh VLV Technician's Handbook

The carburetor is a float feed, nonadjustable type,
with a 1 piece extruded aluminum body. The float
bowl, float, nozzle, and venturi are nonmetallic,
minimizing the corrosion and varnishing problems.
Common service areas of the carburetor are contained
in the fuel bowl. These areas are the float, needle,
seat and main nozzle. All of these parts can be serviced
without removing the carburetor body from the engine.
DRAIN INTO APPROVED CONTAINER
OUTDOORS, AWAY FROM OPEN FLAME.
FLOAT BOWL SERVICE. Disconnect and plug the fuel
line. Remove the bowl drain screw. Remove the float
bowl by snapping the bale spring towards the throttle
end of the carburetor.
IF A SCREW DRIVER OR SIMILAR TOOL IS USED
TO AID IN THE BAIL REMOVAL, CARE MUST BE
TAKEN NOT TO PERMANENTLY BEND THE
RETAINER.
After the bowl gasket is removed, the parts contained
in the bowl can be inspected and serviced. Pull out the
main nozzle and spring. Inspect the main nozzle for
deposits, be sure to check the cross holes on the body
of the nozzle and the main orifice in the bottom of the
nozzle. Use compressed air or monofilament fishing
line to remove any deposits in the main jet or cross holes.
Remove the drain screw to access the spring, jet and
"O" ring. The main jet should be inspected and cleaned
if deposits exist.
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"O" RING
AIR
BLEED
HOLES
SPLIT SYSTEM MAIN JET
JET AND NOZZLE ASSY.
The float is held in the float bowl by the float pin which
is pressed into tabs on top of the float support towers.
NOTE: To prevent damage to the float bowl, pull straight
up with a needle nose pliers in the pocket closest to the
main fuel well. Carefully lift the float out of the float bowl
and inspect for damage or deposits. Clean the idle
passageway with compressed air, or with tag wire.
IDLE PASSAGE
MAIN NOZZLE
FLOAT
HINGE PIN
NOTE: The inlet needle is attached to the float and
should also be inspected for damage or deposits.
The inlet seat can be removed with a small wire hook or
a #2 crochet hook. Inspect the float bowl and main
nozzle area for sediment and deposits. Use a carburetor
cleaner to loosen and remove deposits and sediment.
INLET NEEDLE
SEATS AT
THIS POINT
MARRIED SYSTEM MAIN JET
INSERT GROOVED
FACE FIRST
INLET SEAT
RETAINING CLIP
IDLE PASSAGE