Dust/Chip Extraction - Bosch GKS 190 Professional Operating Instructions Manual

36 | English
Only use saw blades that correspond with
the characteristic data given in the opera-
ting instructions.
Do not under any circumstances use grin-
ding discs as the cutting tool.
Selecting a Saw Blade
An overview of recommended saw blades can
be found at the end of this manual.
Removal of the Saw Blade (see figure A)
For changing the cutting tool, it is best to place
the machine on the face side of the motor hous-
ing.
— Press the spindle lock button 4 and keep it
pressed.
The spindle lock button 4 may be actuated
only when the saw spindle is at a standstill.
Otherwise, the power tool can be damaged.
— With the Allen key 16 , unscrew the clamping
bolt 17 turning in rotation direction 1 .
— Tilt back the retracting blade guard 11 and
hold firmly.
— Remove the clamping flange 18 and the saw
blade 19 from the saw spindle 21 .
Mounting the Saw Blade (see figure A)
For changing the cutting tool, it is best to place
the machine on the face side of the motor hous-
ing.
— Clean the saw blade 19 and all clamping
parts to be assembled.
— Tilt back the retracting blade guard 11 and
hold firmly.
— Place the saw blade 19 on to the mounting
flange 20 . The cutting direction of the teeth
(direction or arrow on saw blade) and the di-
rection-of-rotation arrow on the blade guard
15 must correspond.
— Mount the clamping flange 18 and screw in
the clamping bolt 17 turning in rotation di-
rection 2 . Observe correct mounting position
of mounting flange 20 and clamping flange
18 .
— Press the spindle lock button 4 and keep it
pressed.
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3_GKS190_Page5to40.indd 36 3_GKS190_Page5to40.indd 36
— With the Allen key 16 , tighten the clamping
bolt 17 turning in rotation direction 2 . The
tightening torque is between 6 – 9 Nm,
which corresponds to hand tight plus π turn.

Dust/Chip Extraction

Before any work on the machine itself, pull
the mains plug.
Dusts from materials such as lead-containing
coatings, some wood types, minerals and
metal can be harmful to one's health. Touch-
ing or breathing-in the dusts can cause aller-
gic reactions and/or lead to respiratory infec-
tions of the user or bystanders.
Certain dusts, such as oak or beech dust, are
considered as carcinogenic, especially in
connection with wood-treatment additives
(chromate, wood preservative). Materials
containing asbestos may only be worked by
specialists.
— Use dust extraction whenever possible.
— Provide for good ventilation of the work-
ing place.
— It is recommended to wear a P2 filter-
class respirator.
Observe the relevant regulations in your
country for the materials to be worked.
Mounting the Extraction Adapter
(see figure B)
Attach the extraction adapter 22 onto the saw-
dust ejector 14 until it latches. A vacuum hose
with a diameter of 35 mm can be connected to
the extraction adapter 22 .
The extraction adapter may not be mounted
when no external dust extraction is con-
nected. Otherwise the extraction channel
can become clogged.
Do not connect a dust bag to the extraction
adapter. Otherwise the extraction system
can become clogged.
To ensure optimum extraction, the extraction
adapter 22 must be cleaned regularly.
Bosch Power Tools
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