Komatsu PC1250-11 Original Instructions Manual page 132

EXPLANATION OF COMPONENTS
ADJUST ECONOMY MODE
Select "Economy Mode Adjustment" (2) on "Machine Setting"
menu screen (b), then press the switch F6.
On "Economy Mode Adjustment", you can adjust the output in
the E mode.
In the economy mode, the higher the selected number starting
from E0 becomes, the lower the engine output becomes. In the
meantime, the better the fuel efficiency becomes.
Operation on "Economy Mode Adjustment" screen
On "Economy Mode Adjustment" screen, you can perform the
following operations with switches F3 to F6.
F3: Moves to the next item (1 line below). When it is on the last
line, it moves to the first line.
F4: Moves to the previous item (1 line above). When it is on the
first line, it moves to the last line.
F5: Cancels the selection and returns the screen to Machine
Setting menu screen.
F6: Enters the selected adjustment mode, and returns the
screen to "Machine Setting" menu screen.
AUTOMATIC LOW IDLE SETTING
Function of the automatic low idle
The auto-deceleration function decreases the engine speed from the working speed to the decelerated speed
after approximately 4 seconds when the work equipment control lever and the travel lever are in NEUTRAL po-
sition while the auto-deceleration is enabled. The engine speed drops to the low idle speed when the work
equipment control lever and the travel lever are still in NEUTRAL position for 30 seconds while the automatic
low idle function is enabled. The fuel efficiency can be improved when no operation is performed.
The setting ON and OFF of the automatic low idle function can be switched with this item.
(Automatic low idle function is set in ON at factory shipment.)
To enable the automatic low idle function
Set the mode as follows to enable the automatic low idle function.
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OPERATION