NEEDLE
AND SEAT
BEND FLOAT
TANG HERE
TO ADJUST BEND FLOAT ARM
HERE TO ADJUST
FLOAT
LEVEL
ADJUSTMENT WITH FUEL
NO FUEL
When checking (loaf
level
and
float
drop,
measure lo float
body,
not
seam.
FIGURE
4.
CARBURETOR FLOAT LEVEL ADJUSTMENTS
Cleaning and Repair
1.
Soak all metal components not replaced in car-
buretor cleaner.
Do
not soak non-metal floats
or
other non-metal parts. Follow the cleaner manu-
facturer's recommendations.
2.
Clean all carbon from the carburetor bore, especially
where the throttle and choke plates seat. Be careful
not
to
plug the idle or main fuel ports.
3.
Dry out all passages with low pressure air
(35
PSI).
Avoid using wire or other objects for cleaning which
may increase the size of critical passages.
4.
Check the condition of the adjustment needle;
replace if damaged. Replace float
if
loaded with fuel
or
damaged.
5.
Check the choke and throttle shafts for excessive
play in their bore. This condition may necessitate
replacement of the carburetor.
Reassembly and Installation
1.
Install needle valve, main jet, and float assembly.
Make sure float pivot pin
is
properly placed and float
moves freely without binding.
2.
Turn carburetor on its side and measure float level
(Figure
4).
Adjust float level only
'if
necessary.
Measure float drop (the distance from the top of
carburetor body
to
top of float). Adjust only if
necessary.
3.
Position gasket on lower carburetor section and
install upper carburetor section.
4.
Install idle adjustment screw, throttle stop screw,
and fixed main jet plug.
5.
Mount carburetor on intake manifold and install
assembly on engine.
6.
Connect governor and throttle linkage, choke
control, and fuel line. Mount air cleaner assembly.
6.
Replace old components with new parts.
7.
Adjust carburetor and governor according
to
direc-
tions given in this section.
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