Komatsu PC138US-11 Operation & Maintenance Manual page 224

MACHINE OPERATIONS AND CONTROLS
2.
Turn fuel control dial (3) to Low idle (MIN) position.
3.
Turn starting switch key (2) to START position (C).
The engine starts.
4.
When the engine starts, release the starting switch key (2).
The key will return automatically to ON position (B).
REMARK
When the engine is started, the battery voltage may sud-
denly drop depending on the temperature and the battery
condition. If this happens, the display on the machine mon-
itor may momentarily go out, but this does not indicate any
abnormality.
NOTICE
• After the engine starts, wait for the engine oil
pressure caution lamp to go out. Do not touch the
control levers or control pedal while the engine oil
pressure caution lamp is lit.
• If the engine oil pressure caution lamp does not
go out even after 4 to 5 seconds have passed,
stop the engine immediately. Check the oil level,
check for leakage of oil, and take the necessary
action.
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OPERATION