TM 5-3740-214-14
Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
THE ENGINE IS HARD TO START (Continued)
(4)
Install new baffle gasket, a new bowl gasket, the fuel bowl and the fuel bowl screw and gasket.
Make sure the bowl gasket seats well.
(5)
Return the carburetor to the engine and go to Step If. Make sure the carburetor to manifold
gasket seals well.
f.
Start the engine.
(1)
If the engine starts, the problem is solved. Go to Step 1g.
(2)
If the engine does not start, go to Step 3.
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 counterclockwise (left: opposite normal rotation) until the engine
slows down.
(3)
Turn the main fuel needle valve back to the right to a position half-way between the slow down
points.
Step 2.
Check the spark plug.
CAUTION
BE CAREFUL when removing the spark plug from the engine. The insulator will break easily.
Figure 5-73. Spark Plug Cleaning and Removal.
5-67
