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18 | English
f A damaged dust protection cap should be
changed immediately. We recommend hav-
ing this carried out by an after-sales service.
Inserting (see figure A)
Clean and lightly grease the shank end of the
tool.
Insert the tool in a twisting manner into the tool
holder until it latches itself.
Check the latching by pulling the tool.
Removing (see figure B)
Push back the locking sleeve 2 and remove the
tool.
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
The operating mode of the power tool is selected
with the mode selector switch 4.
Note: Change the operating mode only when the
machine is switched off! Otherwise, the machine
can be damaged.
Press and hold the unlocking button 3 and turn
the mode selector switch 4 to the required posi-
tion.
Position for hammer drilling
When the drilling tool does not
immediately rotate upon
switching on, allow the ma-
chine to run slowly until the
drilling tool rotates.
Vario-Lock position for adjust-
ment of the chiselling position
1 619 929 754 | (27.7.07)
Position for chiselling
Switching On and Off
To start the machine, press the On/Off switch 5
and keep it depressed.
To switch off the machine, release the On/Off
switch 5.
For low temperatures, the machine reaches the
full hammer/impact capacity only after a certain
time.
This start-up time can be shortened by striking
the inserted tool insert against the floor one
time.
Setting the Speed/Impact Rate
The electronic control enables stepless speed
and impact preselection in accordance with the
material to be worked.
The constant electronic control keeps the prese-
lected speed and impact rate nearly constant be-
tween no-load and load conditions.
The maximum hammering capacity is achieved
when the thumbwheel 6 is set to position "6".
For lower speed settings, the hammering capaci-
ty is lower due to technical reasons.
Select the speed with the thumbwheel 6 accord-
ing to the material.
The data in the following table are recommended
values.
Operating
Hammer Drilling
Mode
Thumb-
Rated
Impact
wheel 6
Speed
Rate
(rpm)
(bpm)
1
135
1240
2
157
1440
3
184
1680
4
204
1880
5
228
2080
6
252
2300
Chiselling
Impact
Rate
(bpm)
1240
1440
1680
1880
2080
2300
Bosch Power Tools
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