ARMY TM 9-2805-259-14
AIR FORCE TO 38G2-89-54
NAVY NAVFAC P-8-615-14E
Malfunction
Test or Inspection
Corrective Action
1. ENGINE FAILS TO START.
Step 1. Inspect fuel filter.
Service a dirty fuel filter (para. 4-13).
Step 2. Inspect magneto contacts.
Adjust or replace worn magneto contacts (para. 4-34).
Step 3. Inspect spark plugs.
Adjust or replace worn spark plug (para. 4-37).
Step 4. Check condensor as follows:
a. Turn engine over so that breaker points (para. 4-34, figure 4-27) are in the open position,
b. Connect positive lead of multimeter to condensor terminal lead.
c. Set multimeter to highest resistance setting and zero meter.
d. Connect second lead of multimeter to ground while observing meter.
If meter shows a deflection, then goes to infinity, go to next step.
If no deflection occurs, or does not go to infinity after deflection, replace condensor
If meter does not return to infinity, disconnect condensor lead from points and retest. If
deflection occurs, replace points (para. 4-35).
Step 5. Inspect spark plug cables.
Replace a defective spark plug cable (para. 4-36).
Step 6. Check carburetor adjustment.
Adjust carburetor (para. 4-46).
Step 7. Check automatic choke operation.
Adjust or replace automatic choke solenoid (para. 4-30).
Step 8. Check low oil pressure shutdown switch as follows:
a. Remove lead going to low oil pressure shutdown switch.
b. Connect lead end to ground,
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 fails to keep running, go to next step.
