Working Advice - Bosch GCM Professional 80SJ Originalbetriebsanleitung

OBJ_BUCH-2154-004.book Page 26 Wednesday, June 14, 2017 5:06 PM
26 | English
Note: For safety reasons, the On/Off switch 15 cannot be
locked; it must remain pressed during the entire operation.
The tool arm can only be guided downward by pressing lock-
ing switch 17.
– For sawing, the locking switch 17 must be therefore
pushed in addition to pressing the On/Off switch 15.
Switching Off
– To switch off the machine, release the On/Off switch 15.

Working Advice

General Sawing Instructions
 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.
Only saw materials which are permitted within the scope of
the intended use.
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.
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.
Position of the Operator (see figure K)
 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°
Minimum workpiece sizes (= all workpieces that can be
clamped left or right from the saw blade with the supplied ma-
terial clamp 7): 100 x 40 mm (length x width)
Cutting depth, max. (0°/0°): 70 mm
Replacing Insert Plates (see figure L)
The red insert plates 23 can become worn after prolonged
use of the machine.
Replace defective insert plates.
– Bring the power tool into the working position.
– Unscrew the screws 43 with a hex key (4 mm) and remove
the old insert plates.
– Insert the new right-hand insert plate.
1 609 92A 3BW | (14.6.17)
– Screw the insert plate as far as possible to the right with
the screws 43 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 25 firmly before saw-
ing. Otherwise the saw blade can become wedged in the
workpiece.
Sawing without Slide Movement (Cutting Off)
(see figure M)
– For cuts without slide movement (small workpieces), loos-
en the locking screw 11 if it is tightened. Push the tool arm
all the way towards the fences 6 and 21 and retighten the
locking screw 11.
– Adjust the requested mitre and/or bevel angle.
– Press the workpiece firmly against the fences 6 and 21.
– Firmly clamp the workpiece as appropriate for its dimen-
sions.
– Switch on the machine.
– Press locking switch 17 and slowly guide the tool arm
downward by the handle 16.
– Saw through the workpiece applying uniform feed.
– Switch off the machine and wait until the saw blade has
come to a complete stop.
– Guide the tool arm slowly upward.
Sawing with Slide Movement
– For cuts using the slide device 12 (wide workpieces), loos-
en the locking screw 11 in case it is tightened.
– Adjust the requested mitre and/or bevel angle.
– Press the workpiece firmly against the fences 6 and 21.
– Firmly clamp the workpiece as appropriate for its dimen-
sions.
– Pull the tool arm away from the fences 6 and 21 until the
saw blade is in front of the workpiece.
– Switch on the machine.
– Press locking switch 17 and slowly guide the tool arm
Height x Width [mm]
downward by the handle 16.
– Now push the tool arm toward the fences 6 and 21 and saw
through the workpiece with uniform feed.
70 x 270
– Switch off the machine and wait until the saw blade has
70 x 190
come to a complete stop.
45 x 270
– Guide the tool arm slowly upward.
Special Workpieces
When sawing curved or round workpieces, these must be es-
pecially secured against slipping. At the cutting line, no gap
may exist between workpiece, fence and saw table.
Provide for special fixtures, if required.
Checking and Adjusting the Basic Adjustment
 Before any work on the machine itself, pull the mains
plug.
To ensure precise cuts, the basic adjustment of the machine
must be checked and adjusted as necessary after intensive
use.
Bosch Power Tools