TM 9-2320-361-10 2-48. OPERATION OF ARCTIC WINTERIZATION KIT (Contd) (8) Turn RUN-OFF-START switch (2) to OFF position, and accessory power switch (4) to OFF. NOTE Engine must he running to operate fuel burning personnel heater. (9) Pull air control knob (6) out all the way. (10) Turn RUNOFF-START switch (7) on fuel burning personnel heater control to START position until red indicator light (1) illuminates. (11) As soon as red indicator light (1) 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 this may result in damage to windshield from sudden temperature change. (12) Set H-LO switch (8) on HI or LO, as necessary, and adjust air control knob (6) and defroster 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 cock or fuel burning personnel heater shutoff cock, as necessary, by turning clockwise. f. Operation of Quilted Engine Compartment Cover and Radiator Cover. (1) General. The quilted engine compartment cover and radiator cover are used to help engine reach and maintain proper operating temperature. The radiator cover also keeps snow and ice off radiator coils. 2-199