Husqvarna Kohler SV470, Workshop Manual, Page: 35 / 116

5.8
Section 5
Fuel System and Governor
Welch Plug Installation
Use SPX Tool No. KO1017 and install new plugs as
follows:
1. Position the carburetor body with the welch plug
cavities to the top.
2. Place a new welch plug into the cavity with the
raised surface up .
3. Use the end of the tool that is about the same
size as the plug and flatten the plug. Do not force
the plug below the surface of the cavity. See
Figure 5-9.
damage.
• Inspect the tip of the low idle fuel adjustment
needle for wear or grooves.
• Inspect the throttle and choke shaft and plate
assemblies for wear or excessive play.
Repair
Always use new gaskets when servicing or reinstalling
carburetors. Repair kits are available which include
new gaskets and other components. Always refer to
the Parts Manual for the engine being serviced to
ensure the correct repair kits are ordered.
Reassembly
Choke Shaft Installation
1. Install the choke return spring to the choke shaft.
2. Insert the choke shaft with the return spring into
the carburetor body.
3. Rotate the choke lever approximately 1/2 turn
counterclockwise . Make sure the choke return
spring hooks on the carburetor body.
4. Position the choke plate as marked during
disassembly. Insert the choke plate into the slot in
the choke shaft. Make sure the choke shaft is
locked between the tabs on the choke plate.
• Throttle plate, choke plate, throttle shaft, and
choke shaft.
NOTE: Do not submerge the carburetor in
cleaner or solvent when plastic, fiber,
rubber, foam seals or gaskets are
installed. The cleaner may damage these
components.
Inspection
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 pin
for wear or damage.
• Inspect the fuel inlet needle and seat for wear or
Figure 5-9. Installing Welch Plugs.
4. After the plugs are installed, seal them with
Glyptal™ (or an equivalent sealant). Allow the
sealant to dry.
NOTE: If a commercial sealant is not available,
fingernail polish can be used.
Carburetor Reassembly
1. Install the low idle speed adjusting screw and
spring.
2. If the low idle fuel adjusting needle contains a
limiter, adjust to the midpoint within the
adjustment range.
3. Insert the fuel inlet needle into the float. Align the
needle with the seat and lower the float into the
carburetor body. See Figure 5-10. Install the float
shaft.
Tool No. KO1017
Carburetor Body
New Welch Plug