Hitachi Zaxis 850LC-3 Operator's Manual page 110

Boom Mode Switch
When boom mode switch (4) is turned ON, the machine
cannot be raised off the ground with the front attachment,
reducing machine vibration to be developed during excava-
tion.
When turned OFF, the machine can be raised off the ground
with the front attachment, allowing the machine to evacu-
ate if the machine becomes stranded in a muddy area.
Engine Oil Level / Coolant Level Switch
While engine oil level / coolant level switch (5) is turned ON,
the engine oil level / coolant level indicator is displayed.
When releasing the engine oil level / coolant level switch ,
the indicator comes OFF.
Auto-Lubrication Switch (Optional)
When auto-lubrication switch (6) is turned ON, the auto-
lubrication device is activated so that all greasing points ex-
cept for the bucket joint pins, swing bearing and swing gear
are automatically lubricated at regular intervals.
When the switch is turned OFF, the device is deactivated.
Rear Light Switch (Optional)
When rear light switch (7) is turned ON. The rear light at the
rear of the cab roof comes ON.
OPERATOR'S STATION
1-58
4
M1J1-01-020
5
M1J1-03-002
6
M1J1-01-018
7
M1U1-01-009