Starting Operation; Working Advice - Bosch Professional GCM 12 SD Manual Original

OBJ_BUCH-1130-002.book Page 45 Thursday, July 1, 2010 11:44 AM

Starting Operation

Observe correct mains voltage! The voltage
of the power 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 M)
– To start the machine, press the On/Off
switch 27 and keep it pressed.
Note: For safety reasons, the On/Off switch 27
cannot be locked; it must remain pressed during
the entire operation.
The locking lever 43 will only disengage the re-
tracting blade guard 10 after pressing button 8,
so that the tool arm can be lowered.
– For sawing, you must press button 8 in addi-
tion to actuating the On/Off switch.
Switching Off
– To switch off the machine, release the
On/Off switch 27.

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 ma-
chine parts. Remove possibly mounted aux-
iliary stops or adjust them accordingly.
Protect the saw blade against impact and shock.
Do not subject the saw blade to lateral pressure.
Do not saw warped/bent workpieces. The work-
piece must always have a straight edge to face
against the fence.
Long workpieces must be underlaid or support-
ed at their free end.
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 protects 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.
Bosch Power Tools
Permissible Workpiece Dimensions
Maximal workpiece sizes:
Mitre/Bevel Angle
Horizontal Vertical
0° 0°
45° 0°
0° 45°
(leftward)
0° 45°
(rightward)
45° 45°
(leftward)
45° 45°
(rightward)
Minimal workpiece sizes
(= all workpieces that can be clamped left or
right from the saw blade with the provided
quick-action clamp 23):
185 x 40 mm (length x width)
Cutting capacity, max. (0°/0°): 110 mm
Replacing Insert Plates (see figure O)
The red insert plates 12 can become worn after
long use of the machine.
Replace defective insert plates.
– Bring the power tool into the working posi-
tion.
– Unscrew the screws 55 using the provided
Phillips screwdriver and remove the old in-
sert plates.
– Insert the new insert plates.
– Set the bevel angle to 47° (leftward).
– Push locking lever 43 and completely lower
the tool arm.
– Position the insert plate approx. 2 mm away
from the saw blade. Make sure that the saw
blade does not come in contact with the in-
sert plates throughout the complete possible
ripping length.
– Refasten the insert plate with the screws.
– Repeat the work steps for the other insert
plate in the same manner.
English | 45
Height x Width
[mm]
110 x 305
110 x 217
63 x 305
38 x 305
63 x 217
38 x 217
1 609 929 X01 | (1/7/10)