Hitachi Zaxis 850LC-3 Operator's Manual page 354

IMPORTANT: Turn the boom mode switch (3) [OFF] when
operating a hydraulic breaker. If the boom
mode switch (3) is turned [ON], boom-lower-
ing force is reduced so that the designed hy-
draulic breaker power cannot be sufficiently
utilized.
1. Select the proper hydraulic breaker mode on work mode
screen (6) depending on the necessary oil flow rate of
hydraulic breaker employed. Refer to the "work mode"
section on page 13-2 for work mode setting procedures.
2. Move pedal lock (2) forward to unlock attachment pedal
(1).
3. Push down on attachment pedal (1) to operate the break-
er.
WARNING: If stopper bolt (5) does not contact to
bracket (4), the attachment pedal falls backward and
the hydraulic oil flows backward. Damage to the hy-
draulic breaker may result.
4. Remove foot from attachment pedal (1) to stop the
breaker.
5. Always keep attachment pedal (1) locked with pedal lock
(2) when the attachment pedal is not in use.
4
5
Locked Attachment pedal
OPTIONAL ATTACHMENTS AND DEVICES
1
2
M1J1-13-002
5
Unlocked Attachment pedal
13-4
1
4
3
M1J1-03-001
3
M1J1-01-020
6
T1J7-02-002E
2
M1J1-13-003