Engine Control Dial; Auto-Idle Switch - Hitachi 120-3 class Operator's Manual

Hydraulic excavator
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ENGINE CONTROL DIAL

Use engine control dial (1) to adjust engine speed.
Turn it clockwise to increase engine speed or counterclockwise
to decrease engine speed.
The fully clockwise position
The fully counterclockwise position : Slow idle

AUTO-IDLE SWITCH

The auto-idle Switch (2) sets the engine speed control mode to
either Auto-Idle.
• Auto-Idle Mode
When the auto-idle is turned to the A/I ON position, the
engine speed is reduced to slow idle speed 4 seconds after
releasing all control levers (neutral), reducing the fuel con-
sumption. When the auto-idle mode is selected, auto-idle
indicator (3) on the monitor panel lights.
OPERATOR'S STATION
: Fast idle
1-46
Slow Idle
A/I
OFF
A/I
ON
3
Fast Idle
1
M1U1-01-033
2
M1U1-01-017
M1U1-01-004

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