Komatsu PC400LC-5 Operation & Maintenance Manual page 56

11. EXPLANATION OF COMPONENTS
3. AUTO-DECELERATION SWITCH (Selection switch)
This switch acts to activate the function that automatically low-
ers 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 canceled.
Each time the switch is pressed, the auto-deceleration is actuated or
canceled.
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4. TRAVEL SPEED SWITCH
If the Hi-Lo switch is operated when the machine is traveling,
the machine may deviate even when traveling in a straight line
This is used to select the two travel speeds.
*
lights up: Low speed travel
$I$ lights up:
High speed travel
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When the engine is started, the travel speed is automatically set to
Lo.
When traveling in *, the travel speed is automatically switched to
low speed travel (+) to match the travel surface on soft ground or
when traveling uphill, so there is no need to operate this switch.
5. ALARM BUZZER STOP SWITCH
This switch is used to stop the alarm buzzer when it has sounded
to warn of some abnormality while the engine is running.
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