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Engine exhaust contains products of combustion which may be harmful to your health. Always start and operate the engine in a well ventilated area and, if in an enclosed area, vent the exhaust to the outside. |
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For initial start-up of a new or rebuilt engine, and for start-up of an engine that has been serviced, make provision to shut the engine off should an overspeed occur. This may be accomplished by shutting off the fuel supply and/or the ignition to the engine. |
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Unburned gas in the air inlet and exhaust system may ignite when the engine is started. Personal injury and/or property damage may result. Before starting an engine that may contain unburned gas, purge the unburned gas from the air inlet and exhaust system. Refer to the topic on purging unburned gas in the "Starting the Engine" section. |
Note: Using the "EMERGENCY STOP" button will shut off both the fuel and the ignition.
Do not start the engine or move any of the controls if there is a "DO NOT OPERATE" warning tag or similar warning tag attached to the start switch or to the controls.
Ensure that no one will be endangered before the engine is started and when the engine is started.
Perform the procedures that are described in this Operation and Maintenance Manual, "Before Starting Engine" (Operation Section).
The following events cause unburned gas to remain in the air inlet and in the exhaust manifold:
- Emergency stop
- Engine overspeed
- Unsuccessful successive attempts to start the engine
Unburned gas may remain in the air inlet and exhaust system after several unsuccessful attempts to start the engine. The unburned gas may increase to a concentration that may ignite during a successive attempt to start the engine.
Perform the following procedure in order to purge the unburned gas:
- Turn the manual gas shutoff valve to the CLOSED position.
- Disable the ignition by grounding the "G" lead on the ignition harness.
- Turn the engine control switch to the START position. Crank the engine for one full crank cycle in order to purge the unburned gas.
- Turn the engine control switch to the OFF/RESET position.
- Enable the ignition by disconnecting the "G" lead from ground.
- Turn the manual gas shutoff valve to the OPEN position.
- Continue with your previous procedure.
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When the engine is in the AUTOMATIC mode, the engine can start at any moment. To avoid personal injury, always remain clear of the the engine when the engine is in the AUTOMATIC mode. |
If the mode control switch is in the "AUTO" position, the engine will automatically start when the remote start/stop initiate contact closes. The engine will accelerate to rated rpm when the oil pressure is sufficient.
- Ensure that fuel is supplied to the engine. Ensure that no gas is leaking.
- Ensure that the driven equipment is unloaded.
- For generator set engines, open the main circuit breaker.
- For industrial engines, unload the compressor or pump. Disengage the clutch (if equipped). Place the transmission and/or other attachments for the power take-off in NEUTRAL.
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Illustration 1 g00402399 (1) "SPEED CONTROL" potentiometer
(2) "FUEL ENERGY CONTENT" potentiometer
(3) Mode control switch in the "START" position - Verify that "SPEED CONTROL" potentiometer (1) is set to an rpm that is appropriate. Verify that the "IDLE/RATED" display (if equipped) indicates "IDLE".
- Verify that "FUEL ENERGY CONTENT" potentiometer (2) is set for the fuel that is being used.
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NOTICE Do not engage the starting motor when flywheel is turning. Do not start the engine under load.
If the engine fails to start within 30 seconds, release the starter switch or button and wait two minutes to allow the starting motor to cool before attempting to start the engine again.
- Turn mode control switch (3) to the "START" position.
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NOTICE The engine must be prelubed before the crankshaft is rotated. Damage can result if the crankshaft is rotated on dry bearing surfaces.
Note: The prelube oil pump will operate for approximately 30 seconds. When the oil pressure is sufficient, the status control module will initiate the engine start-up. If the module detects a signal that prevents the engine from starting, the appropriate indicator will illuminate. A diagnostic code will be generated.
- Allow the engine to idle for three to five minutes.
The engine speed should stabilize at low idle rpm. Perform these checks during the warm-up:
- Check all of the pressure gauges.
- Inspect the engine for leaks.
- Listen for unusual noises.
When all systems are normal, the rpm may be increased.
Ensure that the oil pressure and the fuel pressure are in the normal ranges. After the engine has started and the warm-up is complete, the engine can be operated at low rpm and low load. The engine will reach normal operating temperature faster if the engine is operated at low rpm and with a low power demand. This procedure is more effective than idling the engine with no load. The engine should reach normal operating temperature in a few minutes.
Note: If the cycle crank feature is enabled, the status control module will attempt to start the engine for the programmed period. If the engine fails to start within the programmed period, the module will execute an overcrank fault. The "OVERCRANK" indicator on the module will illuminate. The module must be reset before the engine can be started. To reset the module, turn the mode control switch to the "OFF/RESET" position.
If the engine fails to start after cranking for 30 seconds, stop cranking. Perform the “Purging Unburned Gas” procedure.