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open position, then pull choke valve out of
choke shaft. Remove choke shaft, return
spring (when used), and foam seal.
Discard seal.
- OR -
If carburetor is equipped with a metal choke
shaft, rotate choke shaft to closed position.
Remove two choke valve screws and choke
valve. Remove choke shaft, return spring and
foam seal. Discard seal.
11. With a modified pin punch (A, Figure 46)
remove welch plug (B) from carburetor
body.
Figure 46
NOTE: Do not attempt to remove the pilot jets,
which are pressed in and not serviceable.
Inspect and Clean Carburetor
1. Inspect openings in the carburetor body
for evidence of wear or damage. If found,
replace the entire carburetor assembly.
2. Inspect the choke shaft, choke valve,
throttle shaft, and throttle valve for
evidence of wear or damage. Replace
parts as necessary.
3. Using Carb/Choke Cleaner #100041 or
#100042, thoroughly clean the following
components, then follow with compressed
air to dry:
• Passages in the fixed main jet (bowl nut)
or emulsion tube
• Inside and outside of the fuel bowl
• Float
• Choke shaft and choke valve
• Throttle shaft and throttle valve
• All passages, openings, and the inside
and outside of the carburetor body
NOTE: Do not soak non-metallic components,
such as floats, o-rings, seals, or diaphragms, in
carb/choke cleaner or they will be damaged.
4. If any passages remain plugged after
cleaning, replace the component or the
entire carburetor assembly.
Assemble Carburetor
Consult the Illustrated Parts List to obtain the
appropriate carburetor overhaul kit before
reassembling the carburetor.
1. Install new welch plug (A, Figure 47) with
pin punch (B) of slightly smaller diameter
than the plug. Press against the plug until
it is flat in the carburetor opening. Do not
cave in plug. Seal the edge of the plug
with non-hardening sealant.
Figure 47
2. If carburetor is equipped with a metal
choke shaft,
• Install new foam seal and return spring
(C, Figure 48) on choke shaft, hooking
small hook (A) in notch on choke lever
(D).
• Insert choke shaft assembly into
carburetor body and engage large end of
return spring (E) on boss. If carburetor
has detent spring, guide spring into slot
in choke shaft lever (B).
• Place choke valve (F) on shaft and install
screws, then actuate the choke shaft to
check for proper movement.