Item No. 1 2 3 4 5 6 7 Paragraph ARMY   TM   9-2805-257-14 AIR  FORCE  TO  38G2–103-2 NAVY   NAVFAC   P-8-612–14E Table  4-1.  Unit  Preventive  Maintenance  Checks  and  Services  (PMCS). H  –  Hours D – Daily Item   to   be   Inspected Spark Plug High Tension Cables Breaker Points Fuel Filter Crankcase Ventilation System Air Cleaner Crankcase Oil S   –   Semiannually   (500   Hours) Procedures Clean, inspect, and regap. Refer to para. 4–19. Clean, inspect, and test Refer to para. 4–18. Inspect, adjust breaker points Models 2A016-1, –2, and –3. Refer to para. 4–30. Service fuel filter. Refer to para. 4-13. Remove, clean, and inspect relief valve. Refer to para 4-24. Remove, clean, and inspect breather line. Refer to para. 4–32. Service air cleaner daily in extreme heat, dusty, or sandy conditions. Refer to para. 4–20 and 4-21. Drain and refill crankcase oil, service oil filter in extreme heat, dusty, or sandy conditions. Refer to LO   5–2805–257–12. Section IV.  UNIT TROUBLESHOOTING Page 4-9 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–3 4-10 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–3 4-9. General.  This section contains troubleshooting procedures to determine the probable cause of observed equipment malfunctions. Tests or inspections are provided to isolate the faulty component and corrective actions are provided to eliminate the malfunction. 4-10. Unit  Troubleshooting  Procedures.  Refer to the symptom index to locate the troubleshooting pro- cedure for the observed malfunction. The table lists the common malfunctions that may occur during the operation or maintenance of the engine. Perform the tests of inspections, and the recommended corrective action in the order listed in the troubleshooting table. If the malfunction is corrected by a specific correction action, do not continue with the remaining steps, if any, of the troubleshooting procedure. If the malfunction is not corrected by the listed correc- tive actions notify your supervisor. SYMPTOM INDEX Symptom Page Engine fails to start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–4 Engine starts but fails to keep running . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–5 Engine misses or runs erratically . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–6 Engine surges or overspeeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–6 Engine overheats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..4–6 Change   1 4   -   3