24
| English
1 619 929 726 | (14.11.07)
Bosch Power Tools
Operation
Starting Operation
f
Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the nameplate of the
machine. Power tools marked with 230 V
can also be operated with 220 V.
Setting the Operating Mode
GBH 2-26 E/RE: With the selector switch for
drilling/hammer drilling
16
, the operating mode
of the machine is selected.
To change the operating mode, press the re-
lease button
15
and turn the drilling/hammer
drilling selector switch
16
to the desired posi-
tion until it can be heard to latch.
GBH 2-26 DE/DRE/DFR: The operating mode of
the power tool is selected with the mode selec-
tor switch
11
.
To change the operating mode, push the release
button
10
and turn the mode selector switch
11
to the requested position until it can be heard to
latch.
Note:
Change the operating mode only when the
machine is switched off! Otherwise, the ma-
chine can be damaged.
Reversing the Rotational Direction
(GBH 2-26 RE/DRE/DFR)
The rotational direction switch
7
is used to re-
verse the rotational direction of the machine.
However, this is not possible with the On/Off
switch
9
actuated.
Right rotation:
Turn the selector switch for
drilling/hammer drilling
7
on both sides to
the stop in the position
.
Left rotation:
Turn the selector switch for
drilling/hammer drilling
7
on both sides to
the stop in the position
.
Set the direction of rotation for hammer drilling,
drilling and chiselling always to right rotation.
Switching On and Off
To
start
the machine, press the On/Off switch
9
.
To
lock
the On/Off switch, keep it pressed and
additionally push the lock-on button
8
.
To
switch off
the machine, release the On/Off
switch
9
. When the On/Off switch
9
is locked,
press it first and then release it.
Setting the Speed/Impact Rate
The speed/impact rate of the switched on pow-
er tool can be variably adjusted, depending on
how far the On/Off switch
9
is pressed.
Light pressure on the On/Off switch
9
results in
low speed/impact rate. Further pressure on the
switch increases the speed/impact rate.
Safety Clutch
f
If the tool insert becomes caught or
jammed, the drive to the drill spindle is in-
terrupted. Because of the forces that occur,
always hold the power tool firmly with both
hands and provide for a secure stance.
f
If the power tool jams, switch the machine
off and loosen the tool insert. When switch-
ing the machine on with the drilling tool
jammed, high reaction torques can occur.
GBH 2-26 E/RE
GBH 2-26 DE/DRE/DFR
Position for
hammer
drilling
in concrete or
stone
Position for
drilling
with-
out impact in wood, met-
al, ceramic and plastic as
well as for screwdriving
and thread cutting.
Vario-Lock
position for
adjustment of the chisel-
ling position
The mode selector
switch
11
does not latch
in this position.
Position for
chiselling
OBJ_BUCH-279-002.book Page 24 Wednesday, November 14, 2007 12:41 PM