Bosch GST 90 E Professional Originalbetriebsanleitung Seite 17

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 in the direc-
tion of the grain using maximum pendulum action.
Adjusting the mitre/bevel angle (see figure G)
The base plate (5) can be swivelled to the right or left to
make mitre cuts up to 45°.
The hood (15), the extraction outlet (16) and the anti-
splinter guard (14) cannot be used while mitre/bevel cuts
are being made.
– Push the extraction outlet (16) downwards slightly and
pull it out of the base plate (5).
– Remove the hood (15) and the anti-splinter guard (14).
– Undo the screw (19) using the hex key (4) and push the
base plate (5) slightly towards the mains cable.
– The base plate has lock-in points at 0° and 45° on the left
and right so that precise mitre/bevel angles can be set.
Swivel the base plate (5) to the required position accord-
ing to the scale (18). Other mitre/bevel angles can be ad-
justed using a protractor.
– Then push the base plate (5) towards the saw blade (10)
as far as it will go.
– Retighten the screw (19).
Moving the base plate (see figure G)
You can move the base plate (5) back for sawing close to
edges.
Loosen the screw (19) and push the base plate (5) towards
the mains cable as far as it will go.
Retighten the screw (19).
Sawing with an offset base plate (5) is only possible with a
mitre/bevel angle of 0°. In addition, the parallel guide with
circle cutter (22) (accessory) as well as the anti-splinter
guard (14) 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 (6) towards the extraction
outlet.
Bosch Power Tools
To switch off the sawdust blower device:
When working in metal and with a dust extrac-
tion system connected, push the switch (6)
towards the saw blade.
Starting Operation
Pay attention to the mains voltage. The voltage of the
u
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.
Switching On and Off (GST 90 E)
Make sure that you are able to press the On/Off switch
u
without releasing the handle.
To switch on the power tool, slide the on/off switch (2) for-
wards so that "I" appears on the switch.
To switch off the power tool, slide the on/off switch (2)
backwards so that "0" appears on the switch.
Switching On and Off (GST 90 BE)
Make sure that you are able to press the On/Off switch
u
without releasing the handle.
To switch on the power tool, press the on/off switch (2).
To lock the on/off switch (2), keep it pressed down and
push the locking mechanism (1) to the right or left.
To switch off the power tool, release the on/off switch (2).
If the on/off switch (2) is locked, press the switch first and
then release it.
Controlling the stroke rate (GST 90 BE)
You can variably adjust the stroke rate of the power tool
when it is on by pressing in the on/off switch (2) to varying
extents.
Applying light pressure to the on/off switch (2) results in a
low stroke rate. Applying increasing pressure to the switch
increases the stroke rate.
Preselect the stroke rate
You can also preselect the stroke rate and change it during
operation using the stroke rate preselection thumbwheel
(3).
The required stroke rate is dependent on the material and
the work conditions and can be determined using practical
tests.
It is recommended that you reduce the stroke rate when
placing the saw blade on the workpiece and when sawing
plastic and aluminium.
During prolonged periods of use at a low stroke rate, the
power tool may heat up significantly. Remove the saw blade
and let the power tool run at the maximum stroke rate for
around three minutes to cool down.
Working Advice
Pull the plug out of the socket before carrying out any
u
work on the power tool.
Switch the power tool off immediately if the saw blade
u
becomes blocked.
English | 17
1 609 92A 862 | (05.08.2022)