Service the filter assembly (4) by turning the handle (5) a few times to clean the permanent
Remove the drain plug (6) and allow moisture and sediment to drain from bowl (7).
Reinstall drain plug (6).
Adjust air opening (8) by depressing air band rivet (9) and rotating air band (10) up or down to
increase or decrease air flow.
Make final adjustment during heater operation to obtain a transparent exhaust.