Komatsu WA380-6 Operation & Maintenance Manual page 178

OPERATION
STARTING IN COLD WEATHER
Sit down in the operator's seat before starting the engine.
Do not attempt to start the engine by short-circuiting the engine starting
circuit. Such an act may cause serious bodily injury or fire.
Check that there are no persons or obstacles in the surrounding area,
then sound the horn and start the engine.
Exhaust gas is toxic. When starting the engine in confined spaces, be
particularly careful to ensure good ventilation.
NOTICE
Do not suddenly accelerate the engine before the warming-up operation
is completed.
When starting the engine after the machine has been left for more than half a day in temperatures near -20°C, it will
take time for the engine to achieve complete combustion, so operate the starting switch as follows.
1. Turn the key in starting switch (1) to ON position (B).
If the ambient temperature is low, the preheating pilot lamp (2)
lights up and automatic preheating is carried out. Keep the key
in starting switch (1) at the ON position until the preheating pilot
lamp (2) goes out.
The time that the preheating pilot lamp (2) stays lighted up
depends on the ambient temperature as shown in the table on the
right.
2. When preheating pilot lamp (2) goes out, turn the key in
starting switch (1) to the START position (C).
Keep the key in starting switch (1) at the START position (C) to
keep the starting motor running until the engine starts.
3. The starting motor will continue to turn and the engine will start.
WARNING
Ambient temperature
Above -4 ° C
-4 ° C to -15 ° C
Below -15 ° C
OPERATION
Lighting time
0 seconds
5 seconds to 30
seconds
30 seconds
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