Bosch GST Professional Original Instructions Manual page 9

OBJ_BUCH-1880-002.book Page 9 Thursday, November 26, 2015 3:02 PM
– As far as possible, use a dust extraction system suitable
for the material.
– 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
materials to be worked.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Connecting the Dust Extraction (see figures D–E)
Insert the vacuum connection 18 into the opening of base
plate 7.
Place a vacuum hose 19 (accessory) onto the vacuum connec-
tion 18. Connect the vacuum hose 19 with a vacuum cleaner
(accessory). An overview for the connection of various vacuum
cleaners can be found at the end of these instructions.
To enable optimum dust extraction, use the splinter guard 20
if possible.
The vacuum cleaner must be suitable for the material being
worked.
When vacuuming dry dust that is especially detrimental to
health or carcinogenic, use a special vacuum cleaner.
Splinter Guard (see figure F)
The splinter guard 20 can prevent fraying of the surface while
sawing wood. The splinter guard can only be used with certain
saw blade types, and only at a cutting angle of 0°. When saw-
ing with the splinter guard, the base plate 7 may not be offset
to the rear for sawing close to edges.
Insert the splinter guard 20 into base plate 7 from the front.
Sliding Shoe (see figure G)
The plastic guide plate 6 of base plate 7 reduces sensitive sur-
faces from being scratched up. When cutting metal, use the
steel sliding shoe 21.
To mount the steel sliding shoe 21, slide it onto base plate 7
from the front.
Operation
Operating Modes
 Before any work on the machine itself (e.g. mainte-
nance, tool change, etc.) as well as during transport
and storage, remove the battery from the power tool.
There is danger of injury when unintentionally actuating
the On/Off switch.
Orbital Action Settings
The four orbital action settings allow for optimal adaptation of
cutting speed, cutting capacity and cutting pattern to the ma-
terial being sawed.
The orbital action can be adjusted with the adjusting lever 8,
even during operation.
No orbital action
Small orbital action
Medium orbital action
Large orbital action
Bosch Power Tools
The optimal orbital action setting for the respective applica-
tion can be determined through practical testing. The follow-
ing recommendations apply:
– Select a lower orbital action setting (or switch it off) for a
finer and cleaner cutting edge.
– For thin materials such as sheet metal, switch the orbital
action off.
– For hard materials such as steel, work with low orbital ac-
tion.
– For soft materials and when sawing in the direction of the
grain, work with maximum orbital action.
Adjusting the Cutting Angle (see figure H)
The base plate 7 can be swivelled by 45° to the left or right for
mitre cuts.
Remove the vacuum connection 18.
Loosen screw 22 with Allen key 5 and slide the base plate 7 in
toward the battery 3 to the stop.
For adjustment of precise mitre angles, the base plate has ad-
justment notches on the left and right at 0° and 45°. Swivel
the base plate 7 to the desired position according to the scale
23. Other mitre angles can be adjusted using a protractor.
Afterwards, push the base plate 7 to the stop in the direction
of the saw blade 11.
Tighten the screw 22 again.
The vacuum connection 18 and the splinter guard 20 cannot
be used for bevel cuts.
Offsetting the Base Plate (see figure H)
For sawing close to edges, the base plate 7 can be offset to
the rear.
Loosen screw 22 with Allen key 5 and slide the base plate 7 in
toward the battery 3 to the stop.
Tighten the screw 22 again.
When sawing with the base plate 7 offset, the parallel guide
with circle cutter 25 as well as the splinter guard 20 may not
be used.
Starting Operation
Inserting the battery
 Use only original Bosch lithium ion batteries with the
voltage listed on the nameplate of your power tool. Using
other batteries can lead to injuries and pose a fire hazard.
Insert the charged battery 3 from the rear into the base of the
power tool. Press the battery completely into the base until
the red stripe can no longer be seen and the battery is secure-
ly locked.
Switching On and Off
To start the machine, firstly press on the safety switch 1 next
to the symbol to deactivate it. Then press and hold the
On/Off switch 2.
To switch off the machine, release the On/Off switch 2. Acti-
vate the safety switch 1 by pressing on it next to the
symbol .
Note: For safety reasons, the On/Off switch 2 cannot be
locked; it must remain pressed during the entire operation.
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