TM 9-2320-361-10 2-4. CHASSIS CONTROLS AND INDICATORS Key 1 2 3 4 5 6 7 8 9 10 11 Item and Function Engine Stop Control stops flow of fuel from fuel pump to shut down engine. Accessory Power Switch routes power to starter system, instrument panel gages, fuel pump, and low pressure warning buzzer. Light Switch controls operation of vehicle lights. Engine Start Button is pressed to route electrical current to the starter to crank engine. Air Cleaner Indicator shows red when engine air cleaner filter needs servicing. Defroster Knob is pulled out to direct flow of hot air onto windshield to prevent frosting. Windshield Wiper Control Knob turns windshield wipers on/off. Damper Control Knob is pulled out all the way to provide maximum amount of heat to personnel compartment. Heater Blower Switch is positioned in high or low position to control flow of forced air into personnel compartment. Manifold Heater Switch turns manifold heater on/off. Manifold heater is used to warmup and help start engine in cold weather (+20°F or below). Hand Throttle Contrfol sets engine speed at desired rpm without main- taining pressure on accelerator pedal. Throttle control locks in desired position when pulled out. Rotating control handle clockwise or counter- clockwise unlocks it. 2-2