Working Advice - Bosch GCM 350-254 Notice Originale

OBJ_BUCH-2953-002.book Page 37 Friday, June 30, 2017 11:46 AM

Working Advice

General Sawing Instructions
 Always tighten the locking knob 21 and the clamping
lever 7 firmly before sawing. Otherwise the saw blade
can become wedged in the workpiece.
 For all cuts, it must first be ensured that the saw blade
at no time can come in contact with the fence, screw
clamps or other machine parts. Remove any mounted
auxiliary stops or adjust them accordingly.
Protect the saw blade against impact and shock. Do not sub-
ject the saw blade to lateral pressure.
Do not saw warped/bent workpieces. The workpiece must al-
ways have a straight edge to face against the fence.
Long workpieces must be underlaid or supported at their free
end.
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 downward. When the tool
arm is guided upward, the retracting blade guard must close
again over the saw blade and lock in the uppermost position
of the tool arm.
Marking the Cutting Line (see figure L)
Two laser beams indicate the cutting width of the saw blade.
This allows for exact positioning of the workpiece for sawing,
without having to open the retracting blade guard.
– Switch on the laser beams with switch 32.
– Align your mark on the workpiece between both laser lines.
Note: Before sawing, check if the cutting width is still indicat-
ed correctly (see "Adjusting the Laser", page 38). The laser
beams, as an example, can misadjust through vibrations from
intensive use.
Position of the Operator (see figure M)
 Do not stand in a line with the saw blade in front of the
machine. Always stand aside of the saw blade. This pro-
tects your body against possible kickback.
– Keep hands, fingers and arms away from the rotating saw
blade.
– Do not cross your arms when operating the tool arm.
Permissible Workpiece Dimensions
Maximum workpiece sizes:
Mitre/Bevel Angle
Horizontal Vertical
0° 0°
45° 0°
0° 45° (leftward)
0° 45° (rightward)
45° 45° (leftward)
45° 45° (rightward)
* with vertical spacer 53 (see figure N)
** with horizontal spacer 54 (see figure N)
Bosch Power Tools
Minimum workpiece sizes (= all workpieces that can be
clamped left or right from the saw blade with the provided
quick-action clamp 38):
100 x 100 mm (length x width)
Cutting depth, max. (0°/0°):
– 89 mm
– 100 mm (with vertical spacer 53)
Max. cutting width (0°/0°):
– 320 mm
– 350 mm (with horizontal spacer 54)
Replacing Insert Plates (see figure O)
The red insert plates 19 can become worn after prolonged
use of the machine.
Replace defective insert plates.
– Bring the power tool into the working position.
– Unscrew screws 55 with the provided hex key (4 mm) 37
and remove the old insert plates.
– Insert the new right-hand insert plate.
– Screw the insert plate as far as possible to the right with
the screws 55 so that the saw blade does not come into
contact with the insert plate over the complete 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 clamping
lever 7 firmly before sawing. Otherwise the saw blade
can become wedged in the workpiece.
Adjusting the Speed
(not available for all country-specific product versions)
The speed regulator 8 enables continuously variable adjust-
ment of the speed of the power tool even during operation.
Note: Always set the suitable speed for the workpiece materi-
al (see table below). This prevents overheating of the saw
teeth during sawing.
Speed setting
1
2
3
4
Height x Width
5
[mm]
6
89 x 320
Sawing without Slide Movement (Cutting Off)
100 x 250*
(see figure P)
60 x 350**
– For cuts without slide movement (small workpieces), loos-
en the locking screw 6 if it is tightened. Push the tool arm
89 x 226
all the way towards the fences 2 and 1 and retighten the
50 x 320
locking screw 6.
30 x 320
– Adjust the requested mitre and/or bevel angle.
50 x 226
– Firmly clamp the workpiece as appropriate for its dimen-
sions.
30 x 226
– Switch on the machine.
– Push the locking lever 13 and guide the tool arm slowly
downward with the tool handle 12.
English | 37
Material
Aluminium
Plastics
Wood
1 609 92A 3XP | (30.6.17)