Fitting
Before carrying out any work on the power tool (e.g.
u
maintenance, tool change etc.), remove the battery
from the power tool. There is risk of injury from uninten-
tionally pressing the on/off switch.
Changing the tool
Inserting the application tool (see figure A)
Insert the application tool all the way into the mounting (1).
Fitting the adapter (see figure B)
Remove the application tool.
Insert the adapter into the holder (1). Turn the locking ring
(15) until it audibly engages.
Inserting the application tool into the adapter
GFA 12-E, GFA 12-X (see figure C)
Push back the locking sleeve , guide the application tool into
the tool holder (1) as far as it will go and release the locking
sleeve to lock the application tool.
GFA 12-B (see figure D)
Open the drill chuck adapter (11) by turning it in the direc-
tion of rotation ➊ until the application tool can be inserted.
Insert the application tool.
Firmly tighten the sleeve of the drill chuck adapter (11) by
turning it by hand in the direction of rotation ➋. This will
automatically lock the drill chuck.
To release the locking mechanism and remove the applica-
tion tool, turn the sleeve of the drill chuck adapter in the dir-
ection of rotation.
Turning the adapter GFA 12-E, GFA 12-W (see figure E)
Pull the adapter forwards. Turn the adapter. The adapter
clicks into place in 16 positions around a 360° axis. Choose
a position that is suitable for the work being carried out.
Let go of the adapter again to lock it.
Removing the adapter (see figure F)
Remove the application tool.
Unlock the adapter in the
direction and pull it off the
holder (1).
Combining adapters
The right angle adapter (13) can be combined with any of
the other adapters.
To do this, insert the right angle adapter (13) into the tool
holder (1). Turn the locking ring (15) until it audibly clicks
into place. Then attach one of the other adapters to the right
angle adapter (13).
Dust/Chip Extraction
Dust from materials such as lead-containing coatings, some
wood types, minerals and metal can be harmful to one's
health. Touching or breathing-in the dust can cause allergic
reactions and/or lead to respiratory infections of the user or
bystanders.
Bosch Power Tools
Certain dust, such as oak or beech dust, is considered carci-
nogenic, especially in connection with wood-treatment ad-
ditives (chromate, wood preservative). Materials containing
asbestos may only be worked by specialists.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the ma-
terials to be worked.
Avoid dust accumulation at the workplace. Dust can
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easily ignite.
Operation
Start-up
Setting the rotational direction (see figure G)
Only operate the rotational direction switch (6) when
u
the power tool is not in use.
The rotational direction switch (6) is used to change the ro-
tational direction of the power tool. However, this is not pos-
sible while the on/off switch (7) is being pressed.
Right rotation: To drill and to drive in screws, press the ro-
tational direction switch (6) through to the left stop.
Left Rotation: To loosen and unscrew screws and nuts,
press the rotational direction switch (6) through to the right
stop.
Preselecting the Torque
The torque presetting ring (2) can be used to pre-select the
required torque in 20 stages. When the correct setting is
used, the application tool will be stopped when the screw is
driven flush into the material or once the set torque has been
reached. In position
the overload clutch is deactivated,
e.g. for drilling.
When unscrewing screws, it may be advisable to select a
higher setting or the
symbol.
In position
, the maximum torque for drilling and screw-
driving is achieved.
Mechanical gear selection
Only operate the gear selector (3) when the power
u
tool is not in use.
Always push the gear selector switch as far as it will
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go. Otherwise, the power tool may become damaged.
You can preselect two speed ranges with the gear selector
(3).
Gear se-
Speed
Torque
lector
switch (3)
position
1
Low
High
English | 19
Application range
For heavy-duty ap-
plications:
e.g. drilling and
screwdriving with
large diameters
1 609 92A 9UL | (09.10.2024)