TM 10-3510-209-10
3-7.
MAINTENANCE PROCEDURES. (CONT)
(2)
Service fuel filter by turning handle (1) a few times to clean the permanent element. Remove
drain plug (2) and allow moisture and sediment to drain from bowl. Install drain plug.
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 for binding of moving parts and for damage.
(2)
Adjust air shutter (3) by grasping slider band (4) 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.
3-14
