OPERATION
5-38 / Operating the Engine
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4. Idle engine for 3 to 5 minutes.
5. Turn ignition switch to OFF position.
6. Turn battery selector switch to OFF position.
5-19. Emergency Shutdown (Optional)
The emergency shutdown feature provides positive shutdown capability even in the event that the engine is
operated in an atmosphere rich in fuel vapors. The shutdown device is a clapper valve located in the air intake pipe
or the charge air cooler pipe that blocks all airflow to the intake manifold. The valve is tripped electrically or
pneumatically from a switch located at the driver’s station or pump panel. Once the valve is tripped, it must be reset
before the engine can be started again.
The emergency shutdown device is meant for occasional use only. Continual use of this device will
place unnecessary stress on intake plumbing and engine parts and may lead to reduced component
life.
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