CHAPTER 3 REPAIR OF THE ENGINE

CHAPTER 3

REPAIR OF THE ENGINE

Section I. REPAIR OF THE FUEL SYSTEM

3-1. General

(2) Remove the float needle and valve seat (5)

and the washer (6) from the body (2). Remove the

The fuel system consists of a gasoline tank, fuel

jet (7), the needle (8), the spring (9) and the plug

filter, fuel pump, carburetor, air cleaner, and the

(10).

necessary lines to complete the system. One end of

(3) Remove the plate (12), the retainers (14),

the fuel line is connected to the shutoff valve at the

the spring (15), the levers (17 and 19), and one

base of the fuel tank. The other end of the fuel line

each of the bushings (21), the washers (22 and 23),

is connected to the fuel strainer and sediment bowl.

and the seals (24). Remove the shaft (26) and the

The sediment bowl is directly connected to the fuel

other bushing, washers, and seal (21-24).

pump.

(4) Remove the venturi (28).

3-2. Carburetor

(5) Remove the float axle (29) by pressing a

a. Removal. Refer to TM 10-3930-624-12 for

screwdriver against the float axle at the slotted side

the removal procedure.

of the float hinge bracket. Pull the float axle out

b. Disassembly.

from the opposite side and remove the float (30).

(1) To separate the carburetor body, remove

the four screws and lockwashers (1, fig. 3-1) which

attach the throttle body (2) to the fuel bowl (52).

Discard gaskets (3 and 4).

3-1