Komatsu PC600LC-7 Manual page 178

STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
1. Auto deceleration function
Function
• If all the control levers are at neutral when wait-
ing for work or waiting for a dump truck, the en-
gine speed is automatically reduced to a
midrange speed to reduce fuel consumption and
noise.
• If any lever is operated, the engine speed returns
immediately to the set speed.
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MACHINE CONTROL SYSTEM
PC600, 600LC-7