Figure 4-29. Carburetor, Adjustment Points, Removal and Installation

TM 10-3930-632-12

(5) Loosen the choke adjusting screw (fig.

(2) Remove a pipe plug from the intake

manifold; install an adapter in the pipe plug hole;

4-29); push the choke control knob all the way in; then

pull it out about 1/16-inch. Push the choke control lever

connect a vacuum gage to the adapter.

(3) Connect a tachometer to the engine.

as far as possible toward the rear of the fork lift truck;

secure the choke adjusting screw against the choke

(4) Run the engine at fast idle-until it is at

wire.

operating temperature.

Figure 4-29. Carburetor, Adjustment Points, Removal and Installation

(6) Set the idle speed adjusting screw for

(9) If any idle speed readjustment is

an engine speed of 450 to 500 RPM.

necessary, readjust the idle mixture as directed in (7)

(7) Set the idle mixture adjusting screw to

above.

b. Removal.

obtain the highest reading possible on the vacuum gage.

(8) If engine speed is not between 450 to

(1) Remove the fuel cap and well shown in

500 RPM, reset the engine idle speed as directed in (6)

above.

4-43