Komatsu PC1250-11 Original Instructions Manual page 233

OPERATION
2.
Press the working mode selector switch (20) of the ma-
chine monitor to select the working mode to be used.
For switching the working mode, see"WORKING MODE
SELECTOR SWITCH".
Display of working mode
P+ mode
For operations with emphasis on production
P mode
For heavy-duty operations
E mode
For operations with emphasis on fuel consumption
Heavy lift mode
For assisting the work
(Increases boom raising force increases when boom RAISE is
operated independently)
MACHINE OPERATIONS AND CONTROLS
3-167