Dust/Chip Extraction; Operating Modes - Bosch PKS 40 Originalbetriebsanleitung

16 | English
Only use saw blades that match the specifications
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given in this operating manual and that are tested and
marked in accordance with EN 847-1
Selecting the saw blade
You will find an overview of recommended saw blades at the
end of these operating instructions.
Removing the saw blade (see figure A)
To change tools, we recommend that you place the power
tool down on the front side of the motor housing.
– Press and hold the spindle lock button (5).
Do not press the spindle lock button (5) while the saw
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spindle is moving. The power tool may become damaged
if this happens.
– Use the hex key (3) to undo the clamping bolt (23) in ro-
tational direction ➊.
– Swing the retracting blade guard (11) back and hold on
to it firmly.
– Remove the mounting flange (22) and the saw blade (21)
from the saw spindle (19).
Fitting the saw blade (see figure A)
To change tools, we recommend that you place the power
tool down on the front side of the motor housing.
– Clean the saw blade (21) and all the clamping elements
to be fitted.
– Swing the retracting blade guard (11) back and hold on
to it firmly.
– Place the saw blade (21) on the clamping flange (20).
The cutting direction of the teeth (direction of the arrow
on the saw blade) must match the rotational direction of
the arrow on the protective guard (17).
– Attach the mounting flange(22) and screw in the clamp-
ing bolt (23) in rotational direction ➋. Ensure that the
mounting flange (22) and clamping flange (20) are in-
stalled in the correct position.
– Press and hold the spindle lock button (5).
– Use the hex key (3) to tighten the clamping bolt (23) in
rotational direction ➋. The tightening torque should be
6–9 Nm, which corresponds to hand-tight plus ¼ turn.

Dust/chip extraction

The dust from materials such as lead paint, some types of
wood, minerals and metal can be harmful to human health.
Touching or breathing in this dust can trigger allergic reac-
tions and/or cause respiratory illnesses in the user or in
people in the near vicinity.
Certain dusts, such as oak or beech dust, are classified as
carcinogenic, especially in conjunction with wood treatment
additives (chromate, wood preservative). Materials contain-
ing asbestos may only be machined by specialists.
– Use a dust extraction system that is suitable for the ma-
terial wherever possible.
– Provide good ventilation at the workplace.
– It is advisable to wear a P2 filter class breathing mask.
1 609 92A 8K8 | (14.02.2023)
The regulations on the material being machined that apply in
the country of use must be observed.
Avoid dust accumulation at the workplace. Dust can
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easily ignite.
External dust extraction
Insert the dust extraction adapter (accessory) into an ex-
traction hose (26) (accessory) until you hear it click into
place. Connect the dust extraction adapter to the chip
ejector (16) on the power tool and the extraction hose (26)
to a vacuum cleaner (accessory).
You will find an overview of connecting to various dust ex-
tractors at the end of these operating instructions.
The power tool can be directly connected to the socket of a
Bosch all-purpose dust extractor with remote starter. This
dust extractor starts up automatically when the power tool is
switched on.
The dust extractor must be suitable for the material being
worked.
When extracting dry dust or dust that is especially detri-
mental to health or carcinogenic, use a special dust ex-
tractor.
In Germany, wood dust extraction requires extraction
devices that have been tested on the basis of TRGS 553;
self-generated dust extraction must not be used in the com-
mercial sector. Commercial operators must clarify the spe-
cific requirements for other materials with the responsible
trade association.
Self-generated dust extraction with dust bag
A dust bag (accessory) can be attached for smaller jobs. In-
sert the dust bag nozzle firmly into the chip ejector (16).
Empty the dust bag at regular intervals to maintain optimum
dust collection.
Operation
Pull the plug out of the socket before carrying out any
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work on the power tool.

Operating modes

Setting the cutting depth (see figure B)
Adapt the cutting depth to the thickness of the work-
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piece. A space of less than the height of one full tooth
should be visible under the workpiece.
Loosen the wing bolt (14). For a smaller cutting depth, pull
the power tool away from the base plate (13); for a larger
cutting depth, push the power tool towards the base plate
(13). Set the required cutting depth on the scale (15).
Retighten the wing bolt (14).
Adjusting the mitre/bevel angle
Loosen the wing bolt (7). Swivel the saw to the side. Set the
required mitre/bevel angle on the scale (6). Retighten the
wing bolt (7).
Note: When making mitre cuts, the cutting depth is less than
the value shown on the cutting depth scale (15).
Bosch Power Tools