Engine exhaust contains products of combustion
which can be harmful to your health. Always start the
engine and operate the engine in a well ventilated
area. If the engine is started in an enclosed area,
vent the engine exhaust to the outside.
Note: The engine is equipped with an automatic
device for cold starting for normal conditions of
operation. If the engine will be operated in very cold
conditions, then an extra cold starting aid may be
required. Normally, the engine will be equipped with
the correct type of starting aid for your region of
operation.
The 400 Series engines are equipped with a glow
plug starting aid in each individual cylinder that heats
the intake air in order to improve starting.
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Engine Stopping
To avoid overheating of the engine and accelerated
wear of the engine components, stop the engine
according to this Operation and Maintenance
Manual, “Engine Stopping” topic (Operation Section).
Use the Emergency Stop Button (if equipped) ONLY
in an emergency situation. DO NOT use the
Emergency Stop Button for normal engine stopping.
After an emergency stop, DO NOT start the engine
until the problem that caused the emergency stop
has been corrected.
On the initial start-up of a new engine or an engine
that has been serviced, make provisions to stop the
engine if an overspeed condition occurs. This may be
accomplished by shutting off the fuel supply and/or
the air supply to the engine.
If equipped, in order to stop an electronically
controlled engine, cut the power to the engine.
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Electrical System
Never disconnect any charging unit circuit or battery
circuit cable from the battery when the charging unit
is operating. A spark can cause the combustible
gases that are produced by some batteries to ignite.
To help prevent sparks from igniting combustible
gases that are produced by some batteries, the
negative “−” jump start cable should be connected
last from the external power source to the negative
“−” terminal of the starting motor. If the starting motor
is not equipped with a negative “−” terminal, connect
the jump start cable to the engine block.
Check the electrical wires daily for wires that are
loose or frayed. Tighten all loose electrical wires
before the engine is started. Repair all frayed
electrical wires before the engine is started. See the
Operation and Maintenance Manual for specific
starting instructions.
Grounding Practices
Correct grounding for the engine electrical system is
necessary for optimum engine performance and
reliability. Incorrect grounding will result in
uncontrolled electrical circuit paths and in unreliable
electrical circuit paths.
Uncontrolled electrical circuit paths can result in
damage to main bearings, to crankshaft bearing
journal surfaces, and to aluminum components.
Engines that are installed without engine-to-frame
ground straps can be damaged by electrical
discharge.
To ensure that the engine and the engine electrical
systems function correctly, an engine-to-frame
ground strap with a direct path to the battery must be
used. This path may be provided by way of a direct
engine ground to the frame.
All grounds should be tight and free of corrosion. The
engine alternator must be grounded to the negative
“-” battery terminal with a wire that is adequate to
handle the full charging current of the alternator.
SEBU7992-05
13
Safety Section
Engine Stopping
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