Komatsu WA600-8 Operation & Maintenance Manual page 267

OPERATION
Engine coolant tem-
perature
0 to -25 °C
Max. -25 °C
REMARK
Usually, the engine is preheated sufficiently by the automatic preheating. If it is needed to extend the pre-
heating time, turn the starting switch to preheating position (D).
Do not preheat the engine for more than 30 seconds, however.
3.
When the preheating pilot lamp goes out and the engine
preheating is completed, turn starting switch (1) to START
position (C).
The starting motor rotates to start the engine.
Keep the starting switch (1) at position (C) to keep running
the starting motor until the engine starts.
REMARK
When the ambient temperature is low, fuel is not supplied
to the engine for 3 seconds to ensure lubrication of the en-
gine and to improve the durability after starting switch is
turned to START position (C), so the engine does not start
during this time.
4.
When the engine starts, release the key of starting switch
(1).
Starting switch (1) automatically returns to ON position (B).
REMARK
At starting of the engine, battery voltage may drop abruptly
depending on the ambient temperature or battery condi-
tion, and the machine monitor may light up temporarily or
restart, but it is not a trouble.
When the engine is started, white smoke may come out of the exhaust pipe. It is fine water particles which are
produced from moisture or water vapor and which seem white, thus it does not indicate an abnormality.
The smell of the exhaust gas is different from that of the conventional diesel machine because of the exhaust
gas filtering function.
METHOD FOR STARTING ENGINE IN COLD WEATHER
• Start the engine only while sitting on the operator's seat.
• Do not attempt to start the engine by short-circuiting the engine starting circuit.
Doing so may cause a fire or serious personal injury or death.
• Check that there is no person or obstacle in the area around the machine, 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.
Preheating time
Variable between 0
and 45 seconds
45 seconds
k k
WARNING
MACHINE OPERATIONS AND CONTROLS
3-199