Carburetor - TM-5-4320-272-120052

10. Shaft

1. Pipe ripple

11. Preformed packing

2. Elbow

12. Spring

3. Tribe assembly

13. Gap screw

4. Adapter

14. Lock washer

5. Cap screw

15. Adapter

6. Lock washer

16. Gasket

7. Fuel pump

17. Plunger cap

8. Gasket

18. Plunger

9. Primer handle

Figure 4-4. Fuel pump and fuel strainer, exploded view.

you removed the fuel pump to replace the gaskets

(1) Disassemble the fuel strainer and service

(8 and 16, fig. 4-4), operate the cam follower lever

as instructed in paragraph 3-9c.

to check for faulty movement. Replace the fuel

(2) Disconnect the fuel lines to the fuel

pump if defective.

strainer.

(5) Inspect all remaining parts for damage;

c. Cleaning and Inspection.

replace any damaged parts.

(1) Service the fuel strainer as directed in

d. Reassembly and Installation. Reassemble and

subparagraph 3-9 c.

install the fuel strainer and fuel pump in the reverse

order of disassembly; refer to figure 4-4. Pay

Clean all parts in a well-ventilated area.

particular attention to the following:

Avoid inhalation of solvent fumes and

(1) After installing the fuel strainer and fuel

prolonged exposure of the skin to

pump, make sure you connect the fuel line to the

cleaning solvent. Wash exposed skin

strainer and that all fittings are tight.

thoroughly.

(2) Operate the engine and check for leaks.

(2) Clean the fuel pump with a cloth dam-

Correct any leaks noted.

pened with cleaning solvent (fed. spec. P-D-680);

wipe dry.

4-20. Carburetor

(3) Clean all fuel lines and fittings with

a. Adjustment. If troubleshooting indicates that

cleaning solvent. Blow through them with com-

the carburetor is responsible for faulty engine

pressed air to assure all are clear.

operation, you can adjust the carburetor as follows:

( 4 ) I n s p e c t t h e f u e l p u m p for cracks,

(1) Start the engine and allow it to warm up to

damaged threads, and other obvious damage. If

operating temperature.

4-12