TM 10-3510-220-10
3-7.
MAINTENANCE PROCEDURES. (CONT)
(2) Service fuel filter (4) by turning handle (3) a few times to clean the
permanent element.
Remove drain plug (5) and allow moisture and sediment to drain
from bowl. Install drain plug(5).
d.
Water Heater Air Shutter Assembly Maintenance. These instructions tell
how to inspect and adjust the air shutter assembly on the water heater.
(1) Inspect air shutter forbidding of moving parts and for damage.
(2) Adjust air shutter (1) by grasping slider band(2) and rotating band up or
down to increase or decrease air opening.
Adjust air opening during operation to obtain
a light-colored exhaust and rumble-free operation.
3-15
