Bosch GCM 12 GDL Professional Original Instructions Manual page 23

OBJ_BUCH-1464-001.book Page 23 Monday, May 9, 2011 3:47 PM
– To loosen the lever 16 again (for adjusting standard mitre
angles), pull the lever upward.
The mitre detent override 14 snaps back to its original po-
sition and lever 16 can re-engage into the detents 18.
Adjusting Bevel Angles
To ensure precise cuts, the basic adjustment of the machine
must be checked and adjusted as necessary after intensive
use (see "Checking and Adjusting the Basic Adjustment",
page 26).
The vertical bevel angle can be adjusted in a range from 47°
(leftward) to 47° (rightward).
For quick and precise setting of frequently used bevel angles,
stops have been provided for the angles 0°, 22.5°, 45° and
47°.
Adjusting the Lefthand Bevel Angle Range
(45° to 0°)
– Pull the left fence extension 9 completely outward. (see
"Extending the Fence", page 22)
– Loosen the lock lever 17.
– Tilt the glide arm via handle 4 leftward until the angle indi-
cator 33 indicates the desired bevel angle.
– Hold the glide arm in this position and tighten lock lever 17
again.
The clamping force of the lock lever must securely hold the
position of the glide arm at any bevel angle.
Adjusting the Righthand Bevel Angle Range
(0° to 45°) (see figure J)
– Pull the right fence extension 9 completely out-
ward. (see "Extending the Fence", page 22)
– Loosen the lock lever 17.
– Lightly tilt the glide arm leftward out of the 0°position via
handle 4 and turn rotary knob 39 until the desired bevel
angle range is indicated.
– Tilt the glide arm via handle 4 to the right until angle indica-
tor 24 indicates the desired bevel angle.
– Hold the glide arm in this position and tighten lock lever 17
again.
The clamping force of the lock lever must securely hold the
position of the glide arm at any bevel angle.
Standard 0° Bevel Angle
To enable simple and swift resetting of the standard 0° bevel
angle, rotary knob 39 will engage in the bevel angle range
.
– Tilt the glide arm from right to left over the 0° position.
Adjusting the Complete Bevel Angle Range
(–47° to +47°)
– Pull both fence extensions 9 completely out-
ward. (see "Extending the Fence", page 22)
– Loosen the lock lever 17.
– Lightly tilt the glide arm leftward out of the
0°position via handle 4 and turn rotary knob 39 until the
desired bevel angle range is indicated.
– Tilt the glide arm via handle 4 to the left or right until angle
indicator 33 or 24 indicate the desired bevel angle.
Bosch Power Tools
– Hold the glide arm in this position and tighten lock lever 17
again.
The clamping force of the lock lever must securely hold the
position of the glide arm at any bevel angle.
Standard 22.5° (see figure K)
– Pull adjustment knob 34 completely outward and turn it by
90°. Now, tilt the glide arm via handle 4 until the glide arm
can be heard to engage.
Starting Operation
Observe the mains voltage! The voltage of the power
source must correspond with the data on the type plate of
the machine.
Switching On (see figure L)
– For starting operation, pull the On/Off switch 60 in the di-
rection of the handle 4.
Note: For safety reasons, the On/Off switch 60 cannot be
locked; it must remain pressed during the entire operation.
The glide arm can only be guided downward by pressing lock-
ing lever 5.
– For sawing, the locking lever 5 must be pushed in addition
to pressing the On/Off switch.
Switching Off
– To switch off the machine, release the On/Off switch 60.
Reduced starting current
The electronic reduced starting current limits the power con-
sumption when switching the tool on and enables operation
from a 13 ampere fuse.
Note: When the machine runs at full speed immediately after
switching on, the reduced starting current has failed. The
power tool should be sent immediately to an after-sales serv-
ice (for addresses, see section "After-sales Service and Cus-
tomer Assistance", page 28).
Working Advice
General Sawing Instructions
Always firmly tighten locking knob 15 and lock lever 17
before sawing. Otherwise the saw blade could become
jammed in the workpiece.
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.
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)
Two laser beams indicate the cutting width of the saw blade.
This allows for exact positioning of the workpiece for sawing,
without having to open the retracting blade guard.
– Switch on the laser beams with switch 61.
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