14. CONTROLS.
The firer uses the pressure-tank valve handle, the trigger, and the
valve lever and grip safety (Fig 12) in succession as follows:
_a. Valve handle._ The pressure-tank valve is operated by turning
a handle on the valve flexible shaft within reach of the firer.
Counterclockwise operation of handle releases pressure to the
fuel tanks. Clockwise turning closes the valve.
_b. Trigger._ The trigger is at the front grip of the gun. Pulling
the trigger vigorously ignites an incendiary charge in the ignition
cylinder. This in turn ignites the fuel as it leaves the gun. The
trigger action also causes the ignition cylinder to revolve one-fifth
of a turn, presenting another charge for firing. Each of the
five charges may thus be used in rapid succession, if necessary,
by pulling the trigger vigorously as many as five times.
_c. Valve lever and grip safety._ The valve lever and grip safety
are mounted on opposite sides of the valve grip of the gun. When
both controls are compressed, fuel is propelled from the gun. If
either the valve lever or the grip safety is not compressed, the
fuel valve remains closed and the fuel remains in the weapon.