P216, P218 P220, P224 Performer Series - Cummins Onan

NEEDLE
AND SEAT
\ - /
BEND FLOAT
TANG HERE
TO ADJUST
MINIMUM
FLOAT DROP
2913"
BEND FLOAT ARM
HERE TO ADJUST
/
U
FLOAT LEVEL ADJUSTMENT
WITH FUEL
NO FUEL
When checking float level and float drop, measure to float body, not seam.
FS-1683
FIGURE 4.
CARBURETOR FLOAT LEVEL ADJUSTMENTS
.
Cleaning and Repair
1. Soak all metal components not replaced in carburetor
cleaner. Do not soak non-metal floats or
other non-metal parts. Follow the cleaning manufacturer's
recommendations.
2. Clean all carbon from thecarburetor 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.
6. Replace old components with new parts.
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.
7. Adjust carburetor and governor according to directions
given in this section.
7-3