Komatsu PC290LC-11 Operation & Maintenance Manual page 241

OPERATION
When the ambient temperature is low, the preheating pilot lamp lights up when the key in starting switch (3) is
turned to ON position to inform the operator that preheating has been started automatically.
Start the engine according to the following procedure.
1.
Check that lock lever (1) is at LOCK position (L).
If lock lever (1) is in FREE position (F), the engine does
not start.
2.
Turn fuel control dial (2) to Low idle (MIN) position.
3.
Turn the key in starting switch (3) to ON position (B).
REMARK
If the ambient temperature is low, the preheating pilot lamp
lights up and automatic preheating is performed. Keep the
key in starting switch (3) at ON position (B) until the pre-
heating pilot lamp goes out. The time that the preheating
pilot lamp stays lit depends on the ambient temperature as
shown in the table.
Ambient temperature
-4 °C {24.8 °F} to
-20 °C {-4 °F}
-20 °C {-4 °F} and be-
low
If a password has been set, the input display screen will be
indicated on the monitor screen, but the preheating pilot
lamp also operates as in the standard screen.
4.
If the preheating pilot lamp does not light up, or it lights up and then goes out to inform that the engine pre-
heating has been completed, turn the key in starting switch (3) to START position (C).
The engine starts.
Lighting time
5 seconds to 40 sec-
onds
40 seconds
MACHINE OPERATIONS AND CONTROLS
3-169