18
| English
1 619 929 787 • 4.5.07
Setting the Speed/Impact Rate
The speed/impact rate of the switched on power tool
can be variably adjusted, depending on how far the
On/Off switch
5
is pressed.
Light pressure on the On/Off switch
5
results in low
speed/impact rate. Further pressure on the switch
increases the speed/impact rate.
Overload Clutch
f
If the tool insert becomes caught or jammed,
the drive to the drill spindle is interrupted.
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.
Operating Instructions
Changing the Chiselling Position (Vario-Lock)
The chisel can be locked in 36 positions. In this man-
ner, the optimum working position can be set for each
application.
Insert the chisel into the tool holder.
Turn the mode selector switch
8
to the “Vario-Lock”
position (see “Setting the Operating Mode”,
page 17).
Turn the tool holder to the desired chiselling position.
Turn the mode selector switch
8
to the “chiselling”
position. The tool holder is now locked.
For chiselling, set the rotation direction to right rotation.
Inserting Screwdriver Bits (see figure I)
f
Apply the power tool to the screw/nut only
when it is switched off.
Rotating tool inserts can
slip off.
To work with screwdriver bits, a universal bit holder
21
with SDS-plus shank (accessory) is required.
Clean the shank end of the adapter shank and apply a
light coat of grease.
Insert the universal bit holder with a turning motion
into the tool holder until it automatically locks.
Check the locking effect by pulling the universal bit
holder.
Insert a screwdriver bit into the universal bit holder.
Use only screwdriver bits that match the screw head.
To remove the universal bit holder, pull the locking
sleeve
3
toward the rear and remove the universal bit
holder
21
out of the tool holder.
Utility Hook (see figure G)
With the utility hook
6
, you can hang the power tool,
e.g., to a ladder. For this, open the utility hook
6
so far
that it engages in the open position.
f
Hang up the power tool in such a manner
that it cannot fall down and that the applica-
tion tool is protected against accidental con-
tact.
Danger of injury.
Fold the utility hook
6
back in again when you are
ready to continue working.
Maintenance and Service
Maintenance and Cleaning
f
Before any work on the machine itself, pull
the mains plug.
f
For safe and proper working, always keep
the machine and ventilation slots clean.
f
A damaged dust protection cap should be
changed immediately. We recommend hav-
ing this carried out by an after-sales service.
Clean the tool holder
1
each time after using.
WARNING! Important instructions for connect-
ing a new 3-pin plug to the 2-wire cable.
The wires in the cable are coloured according to the
following code:
Do
not
connect the blue or brown wire to the earth
terminal of the plug.
Important:
If for any reason the moulded plug is
removed from the cable of this power tool, it must be
disposed of safely.
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-370-001.book Page 18 Friday, May 4, 2007 5:30 PM
