Bosch GDR 10,8-LI Professional Original Instructions Manual page 19

Changing the Tool (see figure B)
Before any work on the machine (e. g.,
maintenance, tool change, etc.) as well as
during transport and storage, set the rota-
tional direction switch to the centre posi-
tion. Unintentional actuation of the On/Off
switch can lead to injuries.
Inserting
Pull the locking sleeve 3 forward, push the in-
sert tool to the stop into the tool holder 2 and
release the locking sleeve 3 to lock the insert
tool.
Use only screwdriver bits with ball catch 1
(DIN 3126-E6.3). Other screwdriver bits 13 can
be used with a universal bit holder with ball
catch 12.
Removing
Pull the locking sleeve 3 forward and remove the
insert tool.
Operation
Method of Operation
The tool holder 2 with the tool is driven by an
electric motor via a gear and impact mechanism.
The working procedure is divided into two phas-
es:
Screwing in and tightening (impact mechanism
in action).
The impact mechanism is activated as soon as
the screwed connection runs tight and thus load
is put on the motor. In this instance, the impact
mechanism converts the power of the motor to
steady rotary impacts. When loosening screws
or nuts, the process is reversed.
Bosch Power Tools
Starting Operation
Inserting the Battery
Use only original Bosch lithium ion batter-
ies with the voltage listed on the nameplate
of your power tool. Using other batteries can
lead to injuries and pose a fire hazard.
Note: Use of batteries not suitable for the ma-
chine can lead to malfunctions of or cause dam-
age to the power tool.
Set the rotational direction switch 8 to the cen-
tre position in order to avoid unintentional start-
ing. Insert the charged battery 7 into the handle
so that it can be felt to engage and faces flush
against the handle.
Reversing the Rotational Direction
(see figure C)
The rotational direction switch 8 is used to re-
verse the rotational direction of the machine.
However, this is not possible with the On/Off
switch 9 actuated.
Right rotation: For driving in screws and tight-
ening nuts, press the rotational direction switch
8 through to the left stop.
Left Rotation: For loosening and unscrewing
screws and nuts, press the rotational direction
switch 8 through to the right stop.
Switching On and Off
To start the machine, press the On/Off switch 9
and keep it pressed.
The power light 4 lights up when the On/Off
switch 9 is slightly or completely pressed, and
allows the work area to be illuminated when
lighting conditions are insufficient.
To switch off the machine, release the On/Off
switch 9.
Adjusting the Speed
The speed of the switched on power tool can be
variably adjusted, depending on how far the
On/Off switch 9 is pressed.
Light pressure on the On/Off switch 9 results in
a low rotational speed. Further pressure on the
switch results in an increase in speed.
English | 19
2 609 140 699 | (3.12.09)