5.7
Section 5
Fuel System and Governor
5
Figure 5-6. Removing Welch Plug.
Main Fuel Jet Removal
The main jet is pressed into the side of the tower
portion of the body. Removal is not recommended,
unless a high-altitude kit is being installed, in which
case the removal instructions will be included in the
kit.
Fuel Inlet Seat Removal
The fuel inlet seat is pressed into the carburetor body,
do not aempt to remove it. If necessary, clean it in
place with aerosol carburetor cleaner.
Choke Shaft Removal
1. Because the edges of the choke plate are beveled,
mark the choke plate and carburetor body, to
ensure correct reassembly. See Figure 5-7.
Also note the choke plate position in the bore,
and the position of the choke lever and choke
return spring.
2. The choke plate is inserted into a slot in the
choke sha. Grasp the choke plate with pliers,
and pull it out of the slot. See Figure 5-8.
Tool No. KO1018
Pry Out Plug
Pierce Plug with Tip
Do Not Allow
Tip to Strike
Carburetor Body
Welch Plug
Figure 5-7. Marking Choke Plate and Carburetor
Body.
Figure 5-8. Removing Choke Plate.
3. Remove the choke sha and choke return spring.
Throttle Shaft Removal
Do not aempt to remove the throle sha, as repair
kits are not available. Throle sha wear is normally
accompanied by corresponding wear to the carburetor
body, making it impractical to aempt a cost-effective
repair. Replace the entire carburetor if the throle
sha is worn.
Cleaning
WARNING: Flammable Solvents!
Carburetor cleaners and solvents are extremely flammable.
Keep sparks, flames, and other sources of ignition away
from the area. Follow the cleaner manufacturer’s warnings
and instructions on its proper and safe use. Never use
gasoline as a cleaning agent.
All parts should be cleaned thoroughly using a
commercial carburetor cleaner. Make sure all gum
deposits are removed from the following areas.
• Carburetor body and bore; especially the areas
where the throle plate, choke plate and shas
are seated.
• Idle fuel and idle ports in carburetor bore, main
jet, bowl vent, and fuel inlet needle and seat.
• Float and float hinge.
• Fuel bowl.
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