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Bosch Power Tools 1 609 929 M91 | (5.3.08)
Reversing the Rotational Direction
(see figure B)
The rotational direction switch 9 is used to re-
verse the rotational direction of the machine.
However, this is not possible with the On/Off
switch 8 actuated.
Right Rotation: For drilling and driving in screws,
push the rotational direction switch 9 left to the
stop.
Left Rotation: For loosening or unscrewing
screws, push the rotational direction switch 9
right to the stop.
Setting the Torque
The required torque can be preselected in 5
steps with the torque preselection ring 4. With
the correct setting, the insert tool is stopped as
soon as the screw is screwed flush into the ma-
terial or when the set torque is reached.
Select a higher setting when driving out screws,
or set to the symbol “Drilling”.
Switching On and Off
To start the machine, press the On/Off switch 8
and keep it depressed.
To switch off the machine, release the On/Off
switch 8.
Adjusting the Speed
The speed of the switched on power tool can be
variably adjusted, depending on how far the
On/Off switch 8 is pressed.
Light pressure on the On/Off switch 8 results in
a low rotational speed. Further pressure on the
switch results in an increase in speed.
Run-on Brake
When the On/Off switch 8 is released, the chuck
brakes to a stop, thus preventing the run-on of
the tool.
When driving in screws, wait until the screw is
screwed in flush with the material and then re-
lease the On/Off switch 8. By doing so, the head
of the screw does not penetrate into the materi-
al.
Working Advice
f Apply the power tool to the screw only when
it is switched off. Rotating tool inserts can
slip off.
Tips
After longer periods of working at low speed, al-
low the machine to cool down by running it for
approx. 3 minutes at maximum speed with no
load.
For drilling in metal, use only perfectly sharp-
ened HSS drill bits (HSS=high-speed steel). The
appropriate quality is guaranteed by the Bosch
accessories program.
Before screwing larger, longer screws into hard
materials, it is advisable to predrill a pilot hole
with the core diameter of the thread to approx.
2
/
3
of the screw length.
Maintenance and Service
Maintenance and Cleaning
f Before any work on the machine (e. g., main-
tenance, tool change, etc.) as well as during
transport and storage, set the rotational di-
rection switch to the centre position. Unin-
tentional actuation of the On/Off switch can
lead to injuries.
f For safe and proper working, always keep
the machine and ventilation slots clean.
If the machine should fail despite the care taken
in manufacturing and testing procedures, repair
should be carried out by an after-sales service
centre for Bosch power tools.
In all correspondence and spare parts order,
please always include the 10-digit article number
given on the type plate of the machine.
OBJ_BUCH-572-003.book Page 17 Wednesday, March 5, 2008 9:32 AM
17


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