TM 5-3740-214-14
Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE LACKS POWER (Continued)
Figure 5-145. Choke Open Position
7.
ENGINE OPERATES ERRATICALLY
Step 1.
Check the fuel tank valve.
WARNING
BE ALERT to disconnect the ground cable from the battery before performing maintenance on the
fuel tank assembly. Spilled gasoline will be ignited by a spark.
a.
Remove the fuel line from the carburetor.
b.
Open the fuel tank valve.
(1)
If gasoline does not drain or drains slowly from the tank, go to Step 1c.
(2)
If gasoline drains well from the tank, go to Step 2.
c.
Remove the tank cap and blow air back through the valve. If gasoline still does not drain or drains
slowly from the fuel tank, replace the valve and the fuel line. Go to Step 1d.
d.
Start the engine.
(1)
If the engine runs smoothly, the problem is solved.
(2)
If the engine still operates erratically, go to Step 2.
Step 2.
Check the spark plug.
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