Komatsu PC138US-11 Operation & Maintenance Manual page 226

Hydraulic excavator
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MACHINE OPERATIONS AND CONTROLS
2.
Turn fuel control dial (3) to Low idle (MIN) position.
3.
Hold starting switch key (2) in HEAT (preheating) position
(D).
Preheating pilot lamp (4) lights up, and approximately 30
seconds later it flashes for 10 seconds to notify completion
of preheating.
4.
After preheating pilot lamp (4) goes out, turn starting
switch key (2) to START position (C).
The engine starts.
5.
When the engine starts, release the starting switch key (2).
The key will return automatically to ON position (B).
NOTICE
Run the engine at idle for 15 seconds immediately after it started. Do not operate the control
levers or fuel control dial during this time.
3-156
WENAM00111
OPERATION

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