Bosch GBH 7-46 DE Professional Operating Instructions Manual page 9

OBJ_BUCH-489-001.book Page 9 Wednesday, September 5, 2007 10:29 AM
Assembly
Before any work on the power tool itself,
pull the mains plug.
Auxiliary Handle
Operate your power tool only with the auxil-
iary handle 6.
The auxiliary handle 6 can be set to any position
for a secure and low-fatigue working posture.
Turn the bottom part of the auxiliary handle 6 in
counterclockwise direction and swivel the auxil-
iary handle 6 to the desired position. Then re-
tighten the bottom part of the auxiliary handle 6
by turning in clockwise direction.
Changing the Tool
With the SDS-max tool holder, simpler and easier
tool changing is possible without additional aids.
The dust protection cap 1 largely prevents the
entry of drilling dust into the tool holder during
operation. When inserting the tool, take care that
the dust protection cap 1 is not damaged.
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.
Bosch Power Tools
Operation
Starting Operation
Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the type plate of the
power tool.
Setting the Operating Mode
The operating mode of the power tool is selected
with the mode selector switch 3.
Note: Change the operating mode only when the
machine is switched off! Otherwise, the machine
can be damaged.
Turn the mode selector switch 3 to the requested
position.
Position for hammer drilling
When the drilling tool does not im-
mediately rotate upon switching on,
allow the machine to run slowly un-
til the drilling tool rotates.
Vario-Lock position for adjustment
of the chiseling position
Position for chiseling
In the "chiseling" position, the impact rate prese-
lected with the dial control 5 is automatically in-
creased when switching on; this causes the pow-
er tool to operate with increased capacity when
chiseling.
Switching On/Off in Drilling Mode
To start the power tool, press the On/Off switch
4 and keep it pressed.
To switch off the power tool, release the On/Off
switch 4.
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