Bosch Professional GCM 8 SJL Original Instructions Manual page 17

OBJ_BUCH-1827-002.book Page 17 Tuesday, February 7, 2017 2:19 PM
Adjusting Bevel Angles
Adjusting Standard Bevel Angles (see figure K)
For quick and precise setting of frequently used bevel angles,
stops have been provided for the 0°, 45°, 22.5° and 33.9°
angles.
– Loosen clamping lever 41.
– Adjust stops 30 or 44 as follows:
Mitre/Bevel Angle Stop Adjustment
0° 44 Push the stop completely to
the rear
45° 30 Turn the stop completely to
the front
22.5° 30 Turn the stop to the centre
33.9° 30 Turn the stop to the rear
– Swing the tool arm with the handle 8 to the requested po-
sition.
– Tighten clamping lever 41 again.
Adjusting Any Bevel Angle
The bevel angle can be set in a range from –2° to +47°.
– Loosen clamping lever 41.
– Turn stop 30 completely to the rear and pull stop 44 com-
pletely to the front.
The complete tilting range is now available.
– Tilt the tool arm by the handle 8 until the angle indicator 43
indicates the desired bevel angle.
– Hold the tool arm in this position and tighten clamping le-
ver 41 again.
Starting Operation
 Observe correct mains voltage! The voltage of the pow-
er source must agree with the voltage specified on the
nameplate of the machine. Power tools marked with
230 V can also be operated with 220 V.
Switching On (see figure L)
To save energy, only switch the power tool on when using it.
– For starting operation, pull the On/Off switch 7 in the di-
rection of the handle 8.
Note: For safety reasons, the On/Off switch 7 cannot be
locked; it must remain pressed during the entire operation.
The tool arm can only be guided downward by pressing lock-
ing switch 9.
– For sawing, you must therefore press locking switch 9 in
addition to pressing the On/Off switch.
Switching Off
– To switch off the machine, release the On/Off switch 7.
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 possibly
mounted auxiliary stops or adjust them accordingly.
Bosch Power Tools
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.
Marking the Cutting Line (see figure M)
A laser beam indicates the cutting line of the saw blade. This
allows for exact positioning of the workpiece for sawing, with-
out having to open the retracting blade guard.
– For this, switch the laser beam on with the switch 40.
– Align the cutting mark on your workpiece with reference to
the right-hand edge of the laser line.
Note: Before sawing, check if the cutting line is still indicated
correctly (see "Adjusting the Laser", page 18). The laser
beam, as an example, can misadjust due to vibrations after in-
tensive use.
Position of the Operator (see figure N)
 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
Maximal workpiece sizes:
Mitre/Bevel Angle
Horizontal Vertical
0° 0°
45° 0°
(leftward/rightward)
0° 45°
45° (leftward) 45°
45° (rightward) 45°
Minimal workpiece sizes (= all workpieces that can be
clamped left or right from the saw blade with the supplied ma-
terial clamp 29):100 x 40 mm (length x width)
Cutting depth, max. (0°/0°): 70 mm
Replacing Insert Plates (see figure O)
The red insert plates 18 can become worn after prolonged
use of the machine.
Replace defective insert plates.
– Bring the power tool into the working position.
– Unscrew the screws 50 with an Allen key (size 4 mm) 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 50 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.
1 609 92A1TW | (7.2.17)
English | 17
Height x Width
[mm]
70 x 312
70 x 225
45 x 312
45 x 225
45 x 225