Changing The Tool; Dust/Chip Extraction; Starting Operation - Bosch GFA 18-H Professional Manual Original

power tool and application tools, keeping their hands warm,
and organising workflows correctly.
Assembly
Remove the battery from the power tool before carry-
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ing out work on the power tool (e.g. maintenance,
changing tool, etc.). The battery should also be re-
moved for transport and storage. There is risk of injury
from unintentionally pressing the on/off switch.

Changing the Tool

The dust protection cap largely prevents the penetration of
drilling dust into the tool holder during operation. When in-
serting the tool, make sure that the dust protection cap does
not become damaged.
Replace a damaged dust protection cap immediately.
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It is recommended that you have use an after-sales
service for this.
Fitting the adapter (see figure A)
Remove the application tool.
Insert the adapter into the holder (1). Turn the locking ring
(9) until it audibly engages.
Inserting the SDS plus Application Tool into the Adapter
(see figure B)
The SDS-plus drill chuck enables you to change the applica-
tion tool easily and conveniently without needing to use ad-
ditional tools.
– Insert the application tool all the way into the holder of
the locking sleeve.
– Check the latching by pulling the tool.
Removing the Application Tool (see figure C)
Push back the locking sleeve and remove the application
tool.
Swivelling the Auxiliary Handle (see figure H)
You can swivel the auxiliary handle (11) to any angle for a
safe work posture that minimises fatigue.
– Turn the lower gripping end of the auxiliary handle (11)
anticlockwise and swivel the auxiliary handle (11) into
the required position. Then, turn the lower gripping end
of the auxiliary handle (11) clockwise to retighten.
Make sure that the retaining strap of the auxiliary handle
slots into the corresponding groove of the housing.
Setting the Drilling Depth (see figure I)
You can use the depth stop to set the required drilling
depth X.
Press the button for depth stop adjustment and insert the
depth stop into the auxiliary handle (11).
The fluting on the depth stop must face upwards or down-
wards.
– Insert the SDS-plus drilling tool to the stop into the SDS-
plus tool holder. Otherwise, the movability of the SDS-
plus drilling tool can lead to incorrect adjustment of the
drilling depth.
Bosch Power Tools
– Pull out the depth stop until the distance between the tip
of the drill bit and the tip of the depth stop corresponds
with the desired drilling depth X.
Removing the adapter (see figure J)
Remove the application tool.
Unlock the adapter in the direction and pull it off the
holder (1).

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.
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

Starting Operation

Inserting the battery
Note: The use of batteries unsuitable for your power tool can
lead to malfunctions or damage to the power tool.
Set the rotational direction switch (7) to the middle position
to avoid unintentionally switching it on. Insert the charged
battery (4) into the handle until you feel it engage and it is
flush with the handle.
Selecting the Drilling or Hammer Drilling Operating
Mode (see figure D)
Set the torque presetting ring (2) to the "drilling" symbol.
Setting the rotational direction (see figure E)
Only operate the rotational direction switch (7) when
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the power tool is not in use.
The rotational direction switch (7) is used to change the ro-
tational direction of the power tool. However, this is not pos-
sible while the on/off switch (8) is being pressed.
Right rotation: To drill and to drive in screws, press the ro-
tational direction switch (7) through to the left stop.
Left Rotation: To loosen and unscrew screws and nuts,
press the rotational direction switch (7) through to the right
stop.
Mechanical gear selection (see figure G)
Only operate the gear selector (3) when the power
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tool is not in use.
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1 609 92A 6NK | (23.11.2021)