TM 9-2320-266-34
(6) Lift the vacuum piston and step-up rods straight
(4) Remove the step-up piston cover plate and gasket
up and out of the air horn as an assembly (figure 12-4).
from the top of the air horn (figure 12-2).
Figure 12-4. Removing or installing the Step-Up
Figure 12-2. Removing the Step-Up Piston Cover Plate.
Piston Assembly
(5) Remove the screws and locks from the accelerator
(7) Remove the vacuum hose from between tile car-
pump arm and the vacuum piston rod lifter. Then slide the
buretor main body find the choke vacuum diaphragm.
pump lever out of the air horn (figure 12-3).
(8) Remove the choke diaphragm. linkage, and
bracket assembly and place it to one side to be cleaned as
a separate item.
(9) Remove the fast-idle cam retaining screw to
release the fast-idle cam and linkage. Remove these parts.
(10) Remove the air horn retaining screws and lift the
air horn straight up and away from the main body as shown
in figure 12-5. Discard the gasket.
(11) Turn the air horn over and push the spring down
to remove the "S" link from the pump shaft. Remove the
pump assembly.
(12) Remove the fuel inlet needle valve, the seat, and
the gasket from the main body.
NOTE
Don't remove the idle orifice tubes or the
main vent tubes from the cluster. They can
be cleaned in a solvent and dried with com-
pressed air.
Figure 12-3. Removing or Installing the Accelerator
Pump Lever.
12-2
