0F to INTERVALS
( + 5C
A - Annu -
# FOR ARCTIC OPERATION REFER TO FM 9-207
FUEL FILTER DRAIN. Before operation, drain water and sediment from primary and
secondary fuel filters as follows:
a. Remove rear power plant access panels (TM 9-2350-266-10).
b. Place suitable container under primary fuel filter. Open drain cock and drain water and
sediment from primary fuel filter. When clean fuel starts to drain out, close drain cock.
c. Repeat step b above for secondary fuel filter.
d. Check for fuel leaks at primary and secondary fuel filters while engine is running. If leak
is found, shut down engine immediately and notify unit maintenance.
FUEL FILTER CHANGE. Every 1500 miles or annually, replace fuel filter elements. With
engine stopped and master switch OFF, place suitable container under fuel filters. Drain both
filters. Remove primary filter shell first and then secondary fuel filter. Clean inside of shells. Install
new elements into shells. Prefill primary and secondary shells with fuel. Install shells. Install rear
power plant access panels (TM 9-2350-266-10). If engine will not start or hesitates, problem
may be trapped air; drain fuel filter per note 1 above.
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