TM 5-3740-214-14
Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE STOPS SUDDENLY (Continued)
(1)
Install the seat needle float and pin.
(2)
Set the float level. Turn the carburetor upside down and let the float rest on the needle. The
clearance between the machined surface of the carburetor and the free end of the float should
be 0.17 inches 0.03 inches (4.32 mm 0.76 mm).
(3)
Adjust the clearance by bending the float tab with a screwdriver if necessary.
(4)
Install a new baffle gasket, a new bowl gasket, the fuel bowl, fuel bowl screw and gasket. Make
sure the bowl gasket seats well.
(5)
Return the carburetor to the engine and go to Step 9f. Make sure the carburetor to manifold
gasket seals well.
f.
Start the engine. If the engine starts, the problem is solved. Go to Step 9g.
g.
Adjust the carburetor while the engine is running.
(1)
Turn the main fuel needle valve to the right (clockwise) until the engine slows down.
(2)
Turn the main fuel needle valve back to the left (counterclockwise) until the engine slows down.
(3)
Turn the main fuel needle valve back to the right to a position halfway between the slow-down
points.
6. ENGINE LACKS POWER
Step 1.
Remove the carburetor adjusting needle valves. Inspect them for dirt and damage.
CAUTION
BE CAREFUL not to use force when turning the needle valves in and out. Force can damage the
valves.
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