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SECTION 6B
FUEL SYSTEMS
Disassembly
Refer to Figures 6B-2 and 68-5.
1. Remove the bowi retaining screw, retaining screw
gasket, and fuel bowl.
2. Remove the bowl gasket, float pin, float, and fuel
inlet needle.
NOTE: To prevent damage to the carburetor, do
not attempt to remove the fuel inlet seat
as itis not serviceable. Replace the car-
buretor if the fuel inlet seat is damaged.
3. Remove the idle fuel adjusting needle and spring.
Remove the idle speed adjusting screw and
spring.
4. Remove the main fuel jet.
5. In order to clean the "off-idle" ports and the bowl
vent channel thoroughly, the welch plugs covering
these areas must be removed. Use tool
No, KO1018 and the following procedure to re-
move the welch plugs. Refer to Figure 6B-6.
Pry Out Plug
Do Not Allow
Tip To Strike
Carburetor Body
Pierce Plug
With Tip
Welch Plug
Figure 68-6. Removing Welch Plugs.
a. Pierce the welch plug with the tip of the tool.
NOTE:
To prevent damage to the carburetor, do
not allow the tooi to strike the carburetor
body.
b. Pry out the welch plug using the tool.
Throttle and Choke Shaft Removal
Further disassembly to remove the throttle shaft and
choke shaft is recommended only if these parts are to
be cleaned or replaced.
Throttle Shaft Removal
1. Because the edges of throttle plate are beveled,
mark the throttle plate and carburetor body with a
marking pen to ensure correct reassembly (refer to
Figure 6B-7). Also take note of the throttle plate
position in bore, and the position of the throttle
lever.
Marking Pen
Figure 6B-7.
Marking Throttle Plate and
Carburetor Body.
2. Carefully and slowly remove the screws securing
the throttle plate to throttle shaft. Remove the
throttle plate.
3. File off any burrs which may have been left on the
throttle shaft when the screws were removed. Do
this before removing the throttle shaft from carbu-
retor body.
4. Remove the throttle lever/shaft assembly with
foam dust seal from carburetor body.
6B.6
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