CHAPTER 6 REPAIR OF FUEL SYSTEM

TM 10-3930-632-34

CHAPTER 6

REPAIR OF FUEL SYSTEM

Section I. DESCRIPTION

tank. The fuel is drawn from the fuel tank, through the

6-1.

General

supply line, by the fuel pump. The pump then delivers

the fuel to the carburetor where it is mixed with the

The fuel system consists of a fuel tank, fuel pump,

proper amount of air and vaporized. The fuel-air mixture

supply line, carburetor, and a governor. All components

leaves the carburetor and enters the intake manifold of

of the fuel system are covered in TM 10-3930-632-12

the engine where it is drawn into the engine cylinders.

with the exception of the carburetor, governor, and fuel

Section II. CARBURETOR

6-2.

General

6-3.

Removal

The carburetor is of updraft, single-barrel design with

Remove the carburetor as outlined in TM 10-3930-

a manual choke. The level of the fuel in the fuel

632-12.

chamber is regulated by a float which controls the fuel

valve.

The fuel valve does not close and open

6-4.

Disassembly

alternately, but assumes an opening regulated by the

float, sufficient to maintain a proper fuel level in the fuel

Disassemble the carburetor as shown in figure 6- 1.

chamber that is equal to the demand of the engine

The index numbers assigned to the parts indicate the

according to its speed and load.

order of disassembly. Note the following:

6-1