Starting Operation; Working Instructions - Bosch GKS 235 PROFESSIONAL Instructions D'emploi

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OBJ_BUCH-329-003.book Page 11 Tuesday, July 10, 2007 11:37 AM
Adjusting the Cutting Angle
It is best to place the power tool on the face side of the
blade guard 1.
Loosen the wing bolts 7 and 15. Tilt the saw sidewards.
Adjust the desired measure on the scale 6. Tighten the
wing bolts 7 and 15 again.
Note: For bevel cuts, the cutting depth is smaller than
the setting indicated on the cutting-depth scale 26.
Cutting Marks
45° 0°
The 0° cutting mark (10) indicates the position of the
saw blade for right-angled cuts. The 45° cutting mark
(9) indicates the position of the saw blade for 45° cuts.
For precise cuts, position the circular saw against the
workpiece as shown in the figure. It is best to carry out
a trial cut.

Starting Operation

Observe correct mains voltage! The voltage of
the power source must agree with the voltage
specified on the type plate of the power tool.
Switching On and Off
To start the power tool, press the On/Off switch 3 and
keep it pressed.
To lock the pressed On/Off switch 3, push the lock-on
button 2 toward the right or left.
To switch off the power tool, release the On/Off
switch 3 or when it is locked with the lock-on button 2,
briefly press the On/Off switch 3 and then release it.

Working Instructions

Protect saw blades against impact and shock.
Guide the power tool evenly and with moderate feed in
the cutting direction. A high feed rate significantly
reduces the service life of the cutting tools and can
damage the machine.
Sawing performance and cutting quality depend
essentially on the condition and the tooth form of the
saw blade. Therefore, use only sharp saw blades that
are suited for the material to be worked.
1 609 929 K68 • 10.7.07
Sawing Wood
The correct selection of the saw blade depends on the
type and quality of the wood and whether lengthway or
crossway cuts are required.
When cutting spruce lengthways, long spiral chips are
formed.
Beech and oak dusts are especially detrimental to
health. Therefore, work only with dust extraction.
Sawing with Parallel Guide (see figure D)
The parallel guide 11 enables exact cuts along a work-
piece edge and cutting strips of the same dimension.
Loosen wing bolt 8 and slide the scale of the parallel
guide 11 through the guide in the base plate 14. Adjust
45° 0°
the desired cutting width as the scale setting at the
respective cutting mark 10 or 9; see Section "Cutting
Marks ". Tighten wing bolt 8 again.
Sawing with Auxiliary Guide (see figure E)
For sawing large workpieces or straight edges, a board
or strip can clamped to the workpiece as an auxiliary
guide; the base plate of the circular saw can be guided
alongside the auxiliary guide.
Sawing with Guide Rail (see figures F–H)
The guide rail 28 is used to carry out straight cuts.
The adhesive coating prevents the guide rail from slip-
ping and protects the surface of the workpiece. The
coating of the guide rail allows the circular saw to glide
easily.
For sawing at a right angle, the circular saw can be
placed directly onto the guide rail 28. Fasten the guide
rail 28 with suitable clamping devices, e. g., screw
clamps, on the workpiece in such a manner that the
narrow leg of the guide rail 28 faces toward the saw
blade.
The guide rail 28 must not extend beyond the
face side of the workpiece where the cut is to be
started.
The guide-rail adapter 31 is required for bevel cuts with
the guide rail 28. The guide-rail adapter 31 is mounted
in the same manner as the parallel guide 11.
The rubber lip on the guide rail acts as a splinter guard
that prevents fraying or tearing out of the surface when
sawing wooden materials. For this, the teeth of the saw
blade must face directly against the rubber lip.
The following work steps are required for exact cuts
using the guide rail 28:
• Place the guide rail 28 onto the workpiece project-
ing lightly over the side. Pay attention that the side
with the rubber lip faces to the workpiece.
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