Starting Operation; Working Advice - Bosch GCM 8 SJL Original Instructions Manual

OBJ_BUCH-1827-001.book Page 17 Wednesday, January 9, 2013 11:31 AM
– To loosen the lever 21 again (for adjusting standard mitre
angles), pull the lever upward.
The locking bracket 19 snaps back to its original position
and lever 21 can re-engage into the detents 24.
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 40.
– Adjust stops 30 or 43 as follows:
Mitre/Bevel Angle Stop
0° 43
45° 30
22.5° 30
33.9° 30
– Swing the tool arm with the handle 8 to the requested po-
sition.
– Tighten clamping lever 40 again.
Adjusting Any Bevel Angle
The bevel angle can be set in a range from –2° to +47°.
– Loosen clamping lever 40.
– Turn stop 30 completely to the rear and pull stop 43 com-
pletely to the front.
The complete tilting range is now available.
– Tilt the tool arm by the handle 8 until the angle indicator 42
indicates the desired bevel angle.
– Hold the tool arm in this position and tighten clamping le-
ver 40 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.
Bosch Power Tools

Working Advice

General Sawing Instructions
 For all cuts, it must first be ensured that the saw blade
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.
Adjustment
Marking the Cutting Line (see figure M)
Push the stop completely to
A laser beam indicates the cutting line of the saw blade. This
the rear
allows for exact positioning of the workpiece for sawing, with-
Turn the stop completely to
out having to open the retracting blade guard.
the front
– For this, switch the laser beam on with the switch 39.
Turn the stop to the centre
– Align the cutting mark on your workpiece with reference to
Turn the stop to the rear
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
– Keep hands, fingers and arms away from the rotating saw
– Do not cross your arms when operating the tool arm.
Permissible Workpiece Dimensions
Maximal workpiece sizes:
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 49 with an Allen key (size 4 mm) and
– Insert the new right-hand insert plate.
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.
the right-hand edge of the laser line.
machine. Always stand aside of the saw blade. This pro-
tects your body against possible kickback.
blade.
Mitre/Bevel Angle
Horizontal Vertical
0° 0°
45° 0°
(leftward/rightward)
0° 45°
45° (leftward) 45°
45° (rightward) 45°
remove the old insert plates.
English | 17
Height x Width
[mm]
70 x 312
70 x 225
45 x 312
45 x 225
45 x 225
1 609 92A 04J | (9.1.13)