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Fuel System And Carburetor
39
Re-assembly of the carburetor
1. Place the carburetor in a clean area on the work
bench.
2. Inspect the throttle valve assembly for dirt and/or var-
nish.
3. Install the throttle valve assembly
4. If the needle valve seat is damaged, replace the car-
buretor. See Figure 5.25.
5. There are ports in the metering valve body. Inspect
them for dirt and/or varnish. See Figure 5.26.
NOTE: The carburetor used in this manual is a Walbro.
Depending on the application, the engine may
have a different carburetor. All carburetors have a
manufacturer name cast on them. It is advisable to
contact the carburetor manufacturer for the proper
rebuild procedure.
6. Inspect the primer pump body for dirt and/or varnish.
See Figure 5.27.
Figure 5.25
Needle valve
seat
Figure 5.26
The lines show the
paths of the different
ports
Filter screen
Figure 5.27
Primer pump body
Primer bulb