Komatsu PC290LC-6K Operation & Maintenance Manual page 57

Hydraulic excavator
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2.
AUTO-DECELERATION SWITCH (Selection switch)
This switch acts to activate the function that automatically lowers the
engine speed and reduces fuel consumption when the control lever is at
neutral.
ON lights up:
Auto-deceleration is actuated.
OFF:
Auto-deceleration is cancelled.
Each time the switch is pressed, the auto-deceleration is actuated or
cancelled.
3.
TRAVEL SPEED SWITCH
If the Hi-Lo switch is operated when the machine is travelling, the
machine may deviate even when travelling in a straight line. To
prevent this, always stop the machine before operating the travel
speed switch.
This is used to select the three travel speeds.
Lo lights up:
Low speed travel
Mi lights up:
Mid range speed travel
Hi lights up:
High speed travel
When the engine is started, the travel speed is automatically set to
Lo.
When travelling in Hi, the travel speed is automatically adjusted to
match the travel surface on soft ground or when travelling uphill, so there
is no need to operate this switch. The monitor indication keeps lamp Hi or
Mi lighted.
WARNING
11. EXPLANATION OF COMPONENTS
2-13

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