Bosch Professional GKS 140 Notice Originale page 10

10 | English
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.
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.
Operation
Operating modes
Pull the plug out of the socket before carrying out any
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work on the power tool.
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 clamping lever (22). For a smaller cutting depth,
pull the saw away from the base plate (12); for a larger cut-
ting depth, push the saw towards the base plate (12). Adjust
the desired cutting depth at the cutting-depth scale.
Retighten the clamping lever (22).
If you are unable to fully adjust the cutting depth after
loosening the clamping lever (22), pull the clamping lever
(22) away from the saw and swivel it downwards. Loosen
the clamping lever (22) again. Repeat this process until the
required cutting depth can be set.
If you are unable to adequately fix the cutting depth after
tightening the clamping lever (22), pull the clamping lever
(22) away from the saw and swivel it upwards. Loosen the
clamping lever (22) again. Repeat this process until the cut-
ting depth is fixed.
Adjusting the Mitre/Bevel Angle
We recommend that you place the power tool down on the
front side of the protective guard (15).
Loosen the wing bolt (6). Swivel the saw to the side. Set the
required mitre angle on the scale (5). Retighten the wing
bolt (6).
Note: When making mitre cuts, the cutting depth is less than
the value shown on the cutting depth scale (23).
1 609 92A 594 | (13.06.2019)
Cut marks
The 0° cut mark (9) indicates
the position of the saw blade
when making a right-angled
cut. The 45° cut mark (8) in-
45 0
dicates the position of the
saw blade when making a 45°
cut.
For a precise cut, place the
circular saw against the work-
piece as shown in the figure.
We recommend making a test cut.
Start-up
Pay attention to the mains voltage. The voltage of the
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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.
Products that are only sold in AUS and NZ: Use a resid-
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ual current device (RCD) with a nominal residual current
of 30 mA or less.
Switching on/off
Make sure that you are able to press the On/Off switch
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without releasing the handle.
To start the power tool, first press the lock-off switch (2),
then press and hold the on/off switch (1).
To switch off the power tool, release the on/off switch (1).
Note: For safety reasons, the on/off switch (1) cannot be
locked; it must remain pressed during the entire operation.
Practical advice
Pull the plug out of the socket before carrying out any
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work on the power tool.
Protect saw blades against shock and impact.
Guide the power tool evenly, pushing it gently in the cutting
direction. Applying too much pressure to the power tool
when moving it in the cutting direction significantly reduces
the service life of the application tools and can damage the
power tool.
The sawing performance and the quality of the cut essen-
tially depend on the condition and the tooth shape of the
saw blade. This is why you should only use sharp saw blades
that are suitable for the material being machined.
Sawing wood
Choosing the right saw blade depends on the wood type,
wood quality and whether cuts with or against the grain are
required.
Making cuts in spruce with the grain produces long, spiral-
shaped chips.
Beech and oak dust is especially detrimental to health.
Therefore, work only with dust extraction.
Sawing with a parallel guide (see figure C)
The parallel guide (10) allows you to make precise cuts
along the edge of a workpiece and cut strips with the same
dimensions.
Bosch Power Tools