5.12
Section 5
Fuel System and Governor
14. Hold the carburetor body so the float assembly
hangs vertically and rests lightly against the fuel
inlet needle. The inlet needle should be fully
seated but the center pin of the needle (on
retainer clip end) should not be depressed. Check
the float height adjustment.
NOTE
: The inlet needle center pin is spring
loaded. Make sure the float rests against
the fuel inlet needle without depressing
the center pin.
15. The correct float height setting is
17 mm
(0.669 in.) ± 1.5 mm (0.059 in.)
, measured from
the float bottom to the body of the carburetor.
See Figure 5-27. Replace the float if the height is
different than specified. Do not attempt to adjust
by bending the float tab.
NOTE
: Be sure to measure from the casting
surface, not the rubber gasket, if still
attached.
Figure 5-28. Installing Fuel Bowl.
Choke Repair
1. Remove the carburetor from the engine. Discard
the old mounting gaskets for the air cleaner and
carburetor.
2. Clean the areas around the choke shaft and the
self-relieving choke mechanism thoroughly.
3. Remove and discard the plastic cap from the end
of the choke lever/shaft assembly.
4. Note the position of the spring legs and the choke
plate for correct reassembly later. See Figure
5-29. Remove the two screws attaching the choke
plate to the choke shaft. Pull the shaft out of the
carburetor body, note the preload of spring and
discard the removed parts.
Figure 5-27. Checking Float Height.
16. When the proper float height is obtained,
carefully reinstall the fuel bowl, using new
O-Rings onto the carburetor. Secure with the
four original screws. Torque the screws to
2.5 ± 0.3 N·m (23 ± 2.6 in. lb.)
. See Figure 5-28.
Figure 5-29. Choke Details.
5. Use a screw extractor (easy-out) and remove the
original choke shaft bushing with the old choke
lever from the carburetor housing. Save the
bushing to use as a driver for installing the new
bushing. Discard the old lever.
6. Clean the I.D. of both choke shaft bores as
required.
