TM 9-2320-386-10 2-97 2-43. OPERATION OF ARCTIC WINTERIZATION KIT (Contd) (8) Turn RUN-OFF-START switch (3) to OFF position, and accessory power switch (1) to OFF position. NOTE Engine must be running to operate fuel burning personnel heater. (9) Pull air control knob (6) out all the way. (10) Turn RUN-OFF-START switch (7) on fuel burning personnel heater con- trol to START position until red indicator light (2) illuminates. (11) As soon as red indicator light (2) illuminates, turn RUN-OFF-START switch (7) to RUN position, with no hesitation at OFF position. CAUTION Heat cab before defrosting windshield. Failure to do so may result in damage to windshield from sudden temperature change. (12) Set HI-LO switch (8) on HI or LO, as necessary, and adjust air control knob (6) and damper control knob (5) as necessary. (13) After heater operation, turn RUN-OFF-START switch (7) on fuel burning personnel heater control to OFF position. (14) Close power plant heater shutoff valve or fuel burning personnel heater shutoff valve, as necessary, by turning clockwise. 1 5 6 7 2 8 2 3 4