The following table shows how the mode selec-
tion switch 7 as well as the On/Off switch 8 for
regulation the speed (GBH 2-24 DSE) are to be
set for the various operating modes (see illustra-
tions on the fold-out page)
Operating Mode GBH 2-S GBH 2-24 DSE
Hammer drilling in
concret or stone
Fig. A Fig. C
Drilling in steel or wood Fig. B Fig. D
Screw driving - Fig. E
Chiselling - Fig. F
Setting the chisel position (VARIO-LOCK)
The percussion drill (GBH 2-24
DSE) is suitable for light-duty chis-
elling work.
Operator fatigue can be avoided by
rotating the tool (e.g. flat chisel) to
the optimum position for use.
The tool mount can be set to 36 different posi-
tions.
Always wear protective gloves!
• Insert the tool into the tool mount.
• Press release button 6 and turn the mode se-
lector switch 7 to Chisel adjustment. (Fig. G)
When the mode selector switch is in the
Vario-lock position, the tool mount can be
rotated to the desired position.
• To fix the tool mount in position, turn the
mode selector switch until it engages in the
Chiselling setting.
Always set the mode selector switch 7 to
Chiselling when carrying out chiselling.
Auxiliary handle
For safety reasons, the percussion drill may
only be operated using the auxiliary handle 5.
Rotating the auxiliary handle 5 to the desired po-
sition reduces operator fatigue and enables the
operator to adopt a safe stance.
To rotate the auxiliary handle 5, first release the
handle by turning it counter-clockwise.
Then retighten the auxiliary handle 5.
Depth Stop (Fig. K)
Loosen the winged screw 12 on the auxiliary
handle 5. Adjust the drilling depth stop t on the
depth stop 4.
Retighten the winged screw.
Overload clutch
If the drill becomes caught or jammed, the drive
to the drill spindle is interrupted.
Because of the forces that occur as a result, al-
ways hold the machine securely with both hands
and take a firm stance.
Sharpening chisels
Since good results can only be achieved
using sharp chisels, it is important to
sharpen tools in good time. This prolongs
the life drilling depth. As a result the vacuum
attachment head always of your tools and
ensures high efciency.
Grind chisels using grinding wheels (e.g.
corundum). Keeping the chisels wet using a
steady supply of water. Refer to the drawings
below for recommended values. Make sure
that no annealing colour appears on the
cutting edges, otherwise the hardness of the
chisel will be impaired (Fig. L, M, N).
Dust extraction
Dust extraction prevents large accumulations of
dust, high concentrations of dust in the ambient
air and facilitates disposal.
The appliance can be plugged directly into the
socket of a Bosch all-purpose vacuum cleaner
which incorporates a remote control start device.
Saugfix
Attach vacuum attachment (accessory) and con-
nect the vacuum cleaner. The vacuum attach-
ment springs back as far as the preset drilling
depth. As a result the vacuum attachment head
always remains close to the surface.
GBH2 S__GBH2-24DSE 25/08/04, 15:3316
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