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5.7
Section 5
Fuel System and Governor
5
Figure 5-6. Carburetor Detail.
5. Hold the carburetor upper body so that the float
assembly hangs vertically and rests lightly against
the fuel inlet needle. The fuel inlet needle should
be fully seated, but the needle tip should not be
depressed. See Figure 5-7.
NOTE: The fuel inlet needle tip is spring loaded.
Make sure the float assembly rests
against the fuel inlet needle without
depressing the tip.
6. The correct float height adjustment is 22 mm
(0.86 in.), measured from the float bottom to the
air horn casting. Adjust the float height by
carefully bending the tab.
NOTE: Be sure to measure from the casting
surface, not the rubber gasket surface.
7. If proper float height adjustment cannot be
achieved, check to see if the fuel inlet needle is
dirty, obstructed or worn. Remove the brass
screw and float assembly to remove the fuel inlet
needle.
Figure 5-7. Carburetor Float Adjustment.
8. Once the proper float height is obtained, carefully
lower the carburetor air horn assembly onto the
carburetor body, connecting the choke linkage.
Install the four screws. Torque the screws to
1.7 N·m (15 in. lb.). See Figure 5-6.
9. Connect the fuel line.
10. Install the breather hose and air cleaner
assembly, following the steps in Section 11 –
‘‘Reassembly”.
Disassembly
Disassemble the carburetor using the following steps.
See Figure 5-8.
1. Remove the air cleaner, breather hose and
carburetor. Refer to Section 9 – “Disassembly”.
2. Remove the four screws and carefully separate
the air horn assembly from the carburetor body.
3. Loosen the screw securing the float assembly to
the air horn and remove the float, float shaft and
fuel inlet needle.
4. Remove the slow jet from the carburetor body.
NOTE: The main jet is a fixed jet and can be
removed if required. Fixed jets for high
altitude are available.
5. Remove the black cap on the end of the choke
shaft only if it is necessary to inspect and clean
the shaft spring.
6. Remove the low idle speed adjusting screw and
spring from the carburetor body.
Tab
2. Disconnect the fuel line from the carburetor. See
Figure 5-6.
3. Clean dirt and debris from exterior of carburetor.
4. Remove the four screws holding the two
carburetor halves together. Carefully lift the upper
body off the carburetor body and disconnect
choke linkage.
Screws
Fuel Line
Float