TM 5-4310-335-14
Table 4-2. TROUBLESHOOTING (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
(3)
Disconnect fuel line from carburetor.
(4)
Compress clamp and disconnect governor rod housing from throttle housing.
(5)
Remove the two nuts and remove carburetor and gasket from intake manifold.
(6)
Remove the two screws and remove air cleaner duct elbow from carburetor.
(7)
Remove the two screws and remove the throttle housing.
(8)
Spread control rod clevis and remove throttle lever.
(9)
Remove screw and remove throttle control from carburetor.
WARNING
Dry cleaning solvent P-D-680, or P-S-661, used to clean parts is potentially
dangerous to personnel and property. Avoid repeated and prolonged skin contact,
Do not use near open flame or excessive heat. Flash point of solvent is 100 (38 )
F
C
- 138 (59 ).
F
C
(10) Clean the carburetor and throttle controls with an approved cleaning solvent and dry with filtered
compressed air. Wipe thoroughly with clean dry cloth if air is not available.
(11) Inspect for defects, cracks, and damage. Replace controls on carburetor if defective or damaged.
g.
The installation is as follows:
(1) Install throttle control to carburetor.
(2) Attach throttle clever to control rod clevis.
(3) Attach rear cover and gaskets and throttle housing to carburetor. It is held with two screws.
(4) Attach air cleaner duct elbow to carburetor by use of two screws.
(5) Attach the carburetor and gasket to intake manifold.
(6) Connect fuel line to carburetor.
(7) Attach throttle lever to shaft. II is held with one screw.
(8) Attach the throttle control housing cover with two screws.
2.
ENGINE STARTS BUT FAILS TO CONTINUE RUNNING
Step 1. Check the service Indicator first. If it shows In the red then remove air cleaner element. If engine starts,
air cleaner needs servicing. If engine still falls to continue running, go to Step 2. Service the air cleaner as
follows:
a. Loosen the two retaining bolts connecting air cleaner body to the cover.
b. Remove cover and element from body.
c. Blow out with compressed a ir, from clean side to dirty side of element. If compressed air is not
available. wash with a detergent and water.
d. Wipe Inside of cover and body.
NOTE
Do not wash element in a cleaning solvent.
e. Reinstall element and tighten retaining bolts.
Step 2. Check fuel filter to see if It Is clogged or filter element dirty. Remove outlet line from the filter to check flow
of fuel. If no fuel or a very small flow of fuel is noticed at the outlet side of the filter, remove and clean the
fuel filter. If fuel flow is sufficient go to Step 3.
WARNING
Dry cleaning solvent P-D-680, or P-S-661, used to clean parts is potentially
dangerous to personnel and property. Avoid repeated and prolonged skin contact.
Do not use near open flame or excessive heat. Flash point of solvent is 100 (38 )
F
C
- 138 (59 ).
F
C
To remove and clean the fuel filter, shut off fuel, loosen thumbscrew holding bowl to the
filter swing the bail to one side and remove the bowl. Remove and clean the filter in an
approved cleaning solvent. Inspect the gasket and replace if necessary.
Step 3. Remove fuel line from fuel pump to carburetor. Turn engine over using the starting rope. If fuel flow Is
coming out of the fuel pump in a steady spurt, go on to Step 4. If no fuel is seen coming out or a weak flow
is noticed, remove and replace the fuel pump.
a. Remove the fuel pump. First disconnect the fuel lines. Remove two screws that attach fuel pump
to engine. Remove fuel pump and discard gasket.
WARNING
Dry cleaning solvent P-D-680, or P-S-661, used to clean parts is potentially
dangerous to personnel and property. Avoid repeated and prolonged skin contact.
Do not use near open flame or excessive heat. Flash point of solvent is 100 (38 )
F
C
- 138 (59 ).
F
C
4-5
