Bosch GKS Professional 85 Manual Original página 19

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 D)
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 (28). For a smaller cutting depth,
pull the saw away from the base plate (14); for a larger cut-
ting depth, push the saw towards the base plate (14). Adjust
the desired cutting depth at the cutting-depth scale.
Retighten the clamping lever (28).
The clamping force of the clamping lever (28) can be read-
justed. To do so, unscrew the clamping lever (28) and
retighten it in a position offset by at least 30° in an anticlock-
wise direction.
Adjusting the mitre/bevel angle
We recommend that you place the power tool down on the
front side of the protective guard (1).
Loosen the wing bolts (16) and (8). Swivel the saw to the
side. Set the required mitre angle on the scale (6). Retighten
the wing bolts (16) and (8).
Note: When making mitre cuts, the cutting depth is less than
the value shown on the cutting depth scale (29).
Cut marks
45 0
The 0° cut mark (9) indicates the position of the saw blade
when making a right-angled cut. The 45° cut mark (10) indic-
ates 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.
Bosch Power Tools
To start the power tool, first press the lock-off switch (2),
then press and hold the on/off switch (3).
To switch off the power tool, release the on/off switch (3).
Note: For safety reasons, the on/off switch (3) cannot be
locked; it must remain pressed during the entire operation.
Starting current limitation
The electronic starting current limitation feature restricts the
power of the power tool when it is switched on and enables
operation using a 16 A fuse.
Practical advice
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 E)
The parallel guide (11) allows you to make precise cuts
along the edge of a workpiece and cut strips with the same
45 0
dimensions.
Loosen the wing bolt (7) and slide the scale of the parallel
guide (11) through the guide in the base plate (14). Adjust
the desired cutting width as a scale value at the correspond-
ing (9) or (10) cut mark, see the section "Cut marks".
Retighten the wing bolt (7).
Sawing with an auxiliary guide (see figure F)
For working on large workpieces or for cutting straight
edges, you can securely fasten a board or rail to the work-
piece as an auxiliary guide. The circular saw can be guided
along the path of this auxiliary guide with the base plate.
Sawing with the guide rail (GKS 85 G) (see figures G–H)
You can use the guide rail (31) to produce straight cuts.
The rubber lip on the guide rail acts as an anti-splinter guard,
which prevents the surface from splintering when sawing
wooden materials. To fulfil this function, the saw blade must
be positioned with its teeth right up against the rubber lip.
Before making the first cut with the guide rail (31), the rub-
ber lip must be adapted to the circular saw used. To do so,
position the guide rail (31) along the entire length of a work-
piece. Set a cutting depth of approx. 9 mm and a right-
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1 609 92A 4PY | (22.11.2018)