ARMY TM 9-2805-258-14
AIR FORCE TO 38G2-89-21
NAVY NAVFAC P-8-614-14E
Table 4-2. Unit Troubleshooting Procedures (cent).
Malfunction
Test or Inspection
Corrective Action
1. ENGINE FAILS TO START (cent).
c. Attempt to start engine (para. 2-9).
If engine starts and stays running, replace low oil pressure shutdown switch (para. 4-28).
If engine starts but fails to keep running, go to Malfunction 2.
If engine still fails to stay running, go to step 10.
Step 10. Check fuel pump pressure.
Replace a defective fuel pump (para. 4-49).
2. ENGINE STARTS BUT FAILS TO KEEP RUNNING.
Step 1.
Step 2.
Step 3.
Step 4.
Inspect fuel filter.
Service a dirty fuel filter (para. 4-13).
Check choke solenoid operation.
Adjust or replace choke solenoid (para. 4-30).
Test fuel pump pressure.
Replace a defective fuel pump (para. 4-49).
Check carburetor.
Adjust or replace a damaged carburetor (para. 4-47).
3. ENGINE MISSES OR RUNS ERRATICALLY.
Step 1. Check spark plugs.
Adjust or replace worn spark plugs (para. 4-38).
Step 2. Check magneto contact points.
Adjust or replace worn contact points (para. 4-34).
Step 3. Test high tension cables.
Replace defective high tension cables (para. 4-37).
Step 4. Check carburetor.
Adjust carburetor (para. 4-47).
4 -5
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