Komatsu PC22MR-3 Operation & Maintenance Manual page 150

Hydraulic excavator
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USE OF THE MACHINE AND RELATED CONTROLS
2. Pull the accelerator lever (2) completely, from the idling
position (A) to the maximum speed position (B).
3. Turn the ignition key (3) to the preheating position (HEAT)
and make sure that the preheating warning light (4) comes
on.
After approximately 18 seconds, the warning light (4) goes
out, indicating that the preheating phase has been
completed.
REMARK
The indicator light (4) lights even when the starter key is in the
preheating (HEAT) position, but does not indicate the presence
of anomalies.
4. When the preheating warning light (4) goes out, turn the
ignition key (3) directly to position START to start the
engine.
5. As soon as the engine starts, release the key (3), which will
automatically return to position ON.
3-62
WEAM014500
FUNCTIONING

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