TM 9-2320-209-10-1 1. Pull DEFROSTER knob (1) out all the way for maximum defrosting. For even heating and defrosting, push DEFROSTER knob half way in. 2. To stop the heater, set the HI-LO switch (2) in the LO position, and set the START-OFF-RUN switch (3) to OFF position. 3. The burner will stop in a few seconds but indicator light (4) will stay on. 4. When burner is cool and all unused fuel is out, indicator light will go out. NOTE Wait until indicator light (4) goes out before trying to restart heater. GO TO FRAME 5 4-389