Table 2-4. Instrument Panel and Controls (Continued)
Twin Agent 4x4 Firefighting Truck
(Refer to Figure 2-4)
Control or Indicator
Engine Stop Control
The Engine Stop Control Handle shuts off fuel to the engine.
The Ignition Switch is used to start the vehicle.
Turn key clockwise to start engine, counterclockwise to stop engine.
Air Restriction Gauge
The Air Restriction Gauge indicates how much engine air cleaner filter capacity has
been used and how much filter capacity remains. The gauge measures maximum re-
striction of the filter element when the engine is operated at full load and locks at that
The gauge is mounted on the air cleaner located in the engine compartment.