Adjusting With Help Of The Fine Scale; Adjusting Standard Vertical Bevel Angles; Adjusting Any Vertical Bevel Angle; Starting Operation - Bosch GTM 12 Professional Originalbetriebsanleitung

OBJ_BUCH-302-005.book Page 61 Tuesday, June 9, 2009 2:19 PM

Adjusting with Help of the Fine Scale

With the fine scale 48, the horizontal mitre angle
can be set with an accuracy of up to ¼°.
Requested Fine scale
setting of the mark
initial angle X (scale 48)
X,25° ¼°
X,5° ½°
X,75° ¾°
Example: In order to adjust a 40.5° mitre angle,
the ½° mark of the fine scale 48 must be
brought into alignment with the 42° mark of
scale 25.

Adjusting Standard Vertical Bevel Angles

(see figure H)
For quick and precise adjustment of commonly
used bevel angles, stops are provided for 0°,
45° and 33.9° angles.
– Loosen the clamping lever 38.
– Standard angles 0° and 45°:
Tilt the tool arm by the handle 20 to the right
stop (0°) or to the left stop (45°).
– Standard angle 33.9°:
Push the stop bolt 34 completely inside.
Then swivel the tool arm by the handle 20 un-
til the bolt faces against the stop screw 33.
– Retighten the clamping lever 38 again.

Adjusting Any Vertical Bevel Angle

(see figure I)
The vertical bevel angle can be set in the range
from –2° to +48°.
– Loosen the clamping lever 38.
– Tilt the tool arm by the handle 20 until the an-
gle indicator 49 indicates the desired bevel
angle.
– Hold the tool arm in this position and retight-
en the clamping handle 38.
Note: For larger vertical bevel angles, pay atten-
tion that the lighting unit 35 does not collide
with the workpiece or the fence during sawing.
(see figure J)
Bosch Power Tools

Starting Operation

Switching On

(see figure
... bring into
– For starting operation, press the green ON
alignment with
pushbutton 2 (I).
the mark
(scale 25)
The tool arm can be guided down only after
pushing button 19.
X + 1°
– For sawing button 19 must therefore be
X + 2°
pushed additionally.
X + 3°

Switching Off

– Press the red OFF pushbutton 1 (O).

Power Failure

The ON/OFF switch is a so-called non-voltage
switch, which prevents the power tool from re-
starting after a power failure (e. g., when the
mains plug is pulled during operation).
– To restart the power tool, press the green ON
pushbutton 2 again.

Working Advice

Before any work on the machine itself, pull
the mains plug.

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.

Illuminating the Work Area

(see figure
Provide for sufficient lighting of the direct work-
ing area.
– For this, switch on the lighting unit 35 with
the switch 36.
English | 61
K)
L)
1 609 929 U05 | (9.6.09)