Kohler COMMAND CH18, Руководство по обслуживанию

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5.9
Section 5
Fuel System and Governor
5
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.
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.
7. In order to clean the ‘‘off-idle’’ vent ports and
bowl vent thoroughly, use a good carburetor
solvent (like Gumout
™
). Blow clean compressed
air through the idle adjusting needle hole. Be
careful to use a suitable shop rag to prevent
debris from hitting someone.
8. Remove the preformed rubber gasket only if it is
to be replaced. If it is removed for any reason,
replace it.
Inspection/Repair
Carefully inspect all components and replace those
that are worn or damaged.
• Inspect the carburetor body for cracks, holes and
other wear or damage.
• Inspect the float for cracks, holes, and missing or
damaged float tabs. Check the float hinge and
shaft for wear or damage.
• Inspect the fuel inlet needle and seat for wear or
damage.
• Inspect the tip of the low idle fuel adjusting
needle for wear or grooves.
• The choke plate is spring loaded. Check to make
sure it moves freely on the shaft.
Figure 5-10. 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 5-9.
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 5-11.
1. Remove the air cleaner, breather hose and
carburetor. Refer to Section 9 – “Disassembly”.
Tab
Float