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(17) (width across flats: 14) against the spanner flat of the
drive spindle.
Place the power tool on a firm surface, e.g. a work bench.
Hold the open-ended spanner (17) in place and loosen the
keyless chuck (1) by turning the hex key (16) in the rota-
tional direction ➊. A tightly seated keyless chuck can be
loosened with a light blow on the long shaft of the hex key
(16).
Remove the hex key from the keyless chuck and completely
unscrew the keyless chuck from the power tool.
The keyed chuck (13) can be removed in the same way as
described for the keyless chuck.
Fitting the Drill Chuck (see figure F)
The keyless chuck/keyed chuck with securing ring is moun-
ted in reverse order.
The drill chuck must be tightened using a tight-
ening torque of approx. 33–39 Nm.
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
Pay attention to the mains voltage! The voltage of the
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power source must match the voltage specified on the
rating plate of the power tool. Power tools marked
with 230 V can also be operated with 220 V.
Products that are only sold in AUS and NZ: Use a resid-
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ual current device (RCD) with a nominal residual current
of 30 mA or less.
Setting the rotational direction (see figures G–H)
Only push the rotational direction switch (5) when the
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power tool is not in use.
The rotational direction switch (5) 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.
Clockwise rotation: To drill and drive in screws, slide the
rotational direction switch (5) upwards on the left-hand side
and downwards on the right-hand side at the same time.
1 609 92A 952 | (18.09.2023)
Anti-clockwise rotation: To loosen and unscrew screws and
nuts, slide the rotational direction switch (5) downwards on
the left-hand side and upwards on the right-hand side at the
same time.
Setting the Operating Mode
Drilling and screwdriving
Set the selector switch (4) to the "drilling" sym-
bol.
Impact drilling
Set the selector switch (4) to the "impact
drilling" symbol.
The selector switch (4) clicks into place and can also be ac-
tuated when the motor is running.
Switching on/off
To start the power tool, press and hold the on/off switch
(7).
Press the lock-on button (6) to lock the on/off switch (7) in
this position.
To switch off the power tool, release the on/off switch (7);
or, if the switch is locked with the lock-on button (6), briefly
press the on/off switch (7) and then release it.
Adjusting the Speed/Impact Rate
You can adjust the speed/impact rate of the power tool when
it is on by pressing in the on/off switch (7) to varying ex-
tents.
Applying light pressure to the on/off switch (7) results in a
low rotational speed/impact rate. Applying increasing pres-
sure to the switch increases the speed/impact rate.
Preselecting the Speed/Impact Rate (GSB 16 RE/GSB
1600 RE)
You can preselect the required speed/impact rate using the
speed preselection thumbwheel (8), even during operation.
The required speed/impact rate is dependent on the mater-
ial and the work conditions and can be determined by prac-
tical trials.
Practical Advice
Pull the plug out of the socket before carrying out any
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work on the power tool.
Only apply the power tool to the screw/nut when the
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tool is switched off. Rotating tool inserts can slip off.
After working at a low speed for an extended period, you
should operate the power tool at the maximum speed for ap-
proximately three minutes without load to cool it down.
To drill into tiles, set the selector switch (4) to the "drilling"
symbol. After drilling through the tile, set the selector switch
to the "impact drilling" symbol and drill with impact.
Use carbide drill bits when working with concrete, stone and
masonry.
When drilling into metal, only use sharpened HSS drills (HSS
= high-speed steel) which are in perfect condition. The
Bosch accessory range guarantees appropriate quality.
Bosch Power Tools
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