Bosch GCM 8 SDE Professional Notice Originale page 34

34 | English
Do not saw warped/bent workpieces. The workpiece must
always have a straight edge to face against the fence.
The free end of long and heavy workpieces must have some-
thing placed underneath it or be supported.
Make sure that the retracting blade guard operates properly
and that it can move freely. The retracting blade guard must
open when the tool arm is guided downwards. When the tool
arm is guided upwards, the retracting blade guard must
close again over the saw blade and lock in the uppermost po-
sition of the tool arm.
Marking the Cutting Line (see figure M)
A laser beam shows you the cutting line of the saw blade.
This allows for exact positioning of the workpiece for sawing,
without having to open the retracting blade guard.
– To activate this, turn on the laser beam using the
switch (40).
– Align your mark on the workpiece with the right-hand
edge of the laser line.
Note: Before sawing, check whether the cutting line is still
indicated correctly. The laser beam can be misaligned due to
vibrations from intensive use, for example.
Position of the operator (see figure N)
Do not stand in line with the saw blade in front of the
u
power tool. Always stand to the side of the saw blade.
This protects your body against possible kickback.
– Keep hands, fingers and arms away from the rotating saw
blade.
– Do not reach one hand across the other when in front of
the tool arm.
Permissible workpiece dimensions
Maximum workpiece dimensions:
Mitre angle Bevel angle
0° 0°
45° (right/left) 0°
0° 45° (left)
0° 45° (right)
45° 45° (left)
45° 45° (right)
45° (right/left) 45° (left with SDS
bolt)
Minimum workpiece dimensions (= all workpieces that can
be secured left or right of the saw blade using the supplied
screw clamps (28)): 100 x 40 mm (length x width)
Max. cutting depth (0°/0°): 70 mm
Replacing the Insert Plates (see figure O)
The red insert plates (19) can become worn after prolonged
use of the power tool.
Replace defective insert plates.
– Bring the power tool into the work position.
– Loosen the screws (53) using the hex key (4 mm) (34)
and remove the old insert plates.
1 609 92A 5U6 | (14.10.2020)
– Insert the new right-hand insert plate.
– Screw the insert plate as far as possible to the right with
the screws (53) so that the saw blade does not come into
contact with the insert plate over the entire length of the
possible slide motion.
– Repeat the work steps in the same manner for the left-
hand insert plate.
Sawing
Always tighten the locking knob (21) and the clamp-
u
ing lever (41) firmly before sawing. Otherwise the saw
blade can become wedged in the workpiece.
Adjusting the speed
The speed regulator (38) enables continuously variable ad-
justment of the speed of the power tool even during opera-
tion.
Note: Always set the suitable speed for the workpiece ma-
terial (see table below). This will prevent the saw teeth over-
heating when sawing.
Speed setting
1
2
3
4
5
6
Sawing Without Slide Movement (cutting off) (see
figure P)
– To perform cuts without slide movement (small work-
pieces), loosen the locking screw (33) if it is clamping the
Height x width
slide device (1) in place. Push the tool arm all the way to-
[mm]
wards the fences (15) and and retighten the locking
screw (33) to lock the slide device in place.
70 x 312
– Firmly clamp the workpiece as appropriate for its dimen-
70 x 225
sions.
45 x 312
– Set the required mitre and/or bevel angle.
20 x 312
– Switch on the power tool.
45 x 225
– Slowly guide the tool arm downwards using the
handle (9).
20 x 225
– Saw through the workpiece applying uniform feed.
30 x 225
– Switch off the power tool and wait until the saw blade has
come to a complete stop.
– Slowly guide the tool arm upwards.
Sawing with slide movement
– For cuts made using the slide device (1) (wide work-
pieces), loosen the locking screw (33) if it is clamping the
slide device in place.
– Firmly clamp the workpiece as appropriate for its dimen-
sions.
– Set the required mitre and/or bevel angle.
– Pull the tool arm away from the fences (15) and until the
saw blade is in front of the workpiece.
Speed Material
3500 rpm Aluminium
3800 rpm
4100 rpm Plastics
4400 rpm
4700 rpm Wood
5300 rpm
Bosch Power Tools