Operating Modes; Starting Operation - Bosch GST 18V-125 B Professional Manual Original

Connect a dust extraction hose (21) (accessory) to the ex-
traction outlet (20). Connect the dust extraction hose (21)
to a dust extractor (accessory).
You will find an overview of connecting to various dust ex-
tractors at the end of these operating instructions.
For optimum dust extraction, where possible use the anti-
splinter guard (18).
Switch off the sawdust blower device when you have con-
nected the dust extraction system.
The dust extractor must be suitable for the material being
worked.
When extracting dry dust that is especially detrimental to
health or carcinogenic, use a special dust extractor.
Operation

Operating modes

Remove the battery from the power tool before carry-
u
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.
Pendulum action settings
The pendulum action can be adjusted using four different
settings, allowing the cutting speed, cutting capacity and the
cut itself to be optimally adapted to the material that you
want to cut.
You can also adjust the pendulum action during operation
using the adjusting lever (15).
Level 0 No pendulum action
Level I Low pendulum action
Level II Moderate pendulum action
Level III High pendulum action
The optimum pendulum level for each application can be de-
termined by a practical test. Note the following recommend-
ations:
– Select a lower pendulum level or switch off the pendulum
action completely if you wish to produce a finer or cleaner
cutting edge.
– Switch off the pendulum action when machining thin ma-
terials (e.g. sheets).
– Work on hard materials (e.g. steel) with low pendulum ac-
tion.
– You can work on soft materials and saw wood using max-
imum pendulum action.
Adjusting the mitre/bevel angle (see figure H)
The base plate (12) can be swivelled to the right or left to
make mitre cuts up to 45°.
The hood (19), the extraction outlet (20) and the anti-
splinter guard (18) cannot be used while mitre/bevel cuts
are being made.
– Push the extraction outlet (20) downwards slightly and
pull it out of the base plate (12).
Bosch Power Tools
– Remove the hood (19) and the anti-splinter guard (18).
– Loosen the screw (22) with the hex key (11) and slide
the base plate (12) slightly towards the rechargeable bat-
tery.
– To adjust mitre/bevel angles, swivel the base plate (12)
to the required position according to the scale (23).
Other mitre/bevel angles can be adjusted using a pro-
tractor.
– Then push the base plate (12) towards the saw
blade (17) as far as it will go.
– Retighten the screw (22).
Moving the base plate (see figure H)
You can move the base plate (12) back for sawing close to
edges.
Loosen the screw of the base plate (22) with the hex key
(11) and slide the base plate (12) all the way towards the
battery (8).
Retighten the screw (22).
Sawing with an offset base plate (12) is only possible with a
mitre/bevel angle of 0°. In addition, the parallel guide with
circle cutter (26) (accessory) as well as the anti-splinter
guard (18) must not be used.
Sawdust blower device
The cutting line can be kept clear of chips using the airflow
from the sawdust blower device.
To switch on the sawdust blower device: When
working with high material removal in wood,
plastic and other similar materials, push the
switch (14) towards the extraction outlet.
To switch off the sawdust blower device: When
working in metal and with a dust extraction sys-
tem connected, push the switch (14) towards
the saw blade.

Starting Operation

Switching On and Off
To switch on the power tool, press the lock-off button (5)
next to the symbol first, thereby deactivating it. Then
press the on/off switch (6) and keep it pressed.
The worklight lights up when the on/off switch (6) is lightly
or fully pressed allowing the work area to be illuminated in
poor lighting conditions.
Do not look directly into the worklight; it can blind
u
you.
To switch off the power tool, release the on/off switch (6).
Activate the lock-off button (5) by pressing the lock-off but-
ton next to the symbol .
Controlling/preselecting the stroke rate
You can variably adjust the stroke rate of the power tool
when it is on by pressing in the on/off switch (6) to varying
extents.
Applying light pressure to the on/off switch (6) results in a
low stroke rate. Applying increasing pressure to the switch
increases the stroke rate.
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1 609 92A 7VS | (05.07.2022)