Cub Cadet CC 4BP 32cc User Manual

Page 26

FUEL SYSTEM AND CARBURETOR

7b. Remove the four screws going through the

primer bulb housing with a #0 phillips
screwdriver.

7c. Separate the carburetor, placing each part

on the bench in the order they came
apart.

7d. Inspect the metering valve and the metering

valve seat for dirt and/or pitting.
See Figure 5.11.

7e. If the metering valve seat is damaged

replace the carburetor. See Figure 5.12.

Figure 5.11

Inspect for dirt
or damage

Figure 5.12

Needle valve
seat

7f. Inspect the metering valve body, primer

pump body and the venturi housing for dirt
and/or varnish.

NOTE: If there is a minor amount of dirt/varnish
in the carburetor it would be worth while to clean
and rebuild the carburetor by following the pro-
cedures recommended by the carburetor manu-
facturer.

NOTE: If there is a lot of dirt/varnish in the car-
buretor, replace the carburetor.

7g. Clean the venturi and the metering valve

housings.

7h. Inspect the diaphragms for brittleness and/

or damage.

NOTE: The carburetor used in this manual is a
Walbro. Depending on the application the
engine may have a different carburetor. All car-
buretors have a manufacturer name cast on
them. It is advisable to contact the carburetor
manufacturer for the proper rebuild procedure.

7i. Clean the metering orifice with carb cleaner.

CAUTION: Do not insert anything into the orifice
to clean it. That will damage the orifice resulting
in the carburetor being unrepairable. See Figure
5.13.

Figure 5.13

Orifice from the

Venturi side