Bosch GCM 254 Professional Originalbetriebsanleitung Seite 31

close again over the saw blade and lock in the uppermost po-
sition of the tool arm.
Position of the operator (see figure K)
Do not stand in line with the saw blade in front of the
u
power tool. Always stand to the side of the saw blade.
This protects your body against possible kickback.
– Keep hands, fingers and arms away from the rotating saw
blade.
– Do not reach one hand across the other when in front of
the tool arm.
Sawing (cutting)
– Firmly clamp the workpiece as appropriate for its dimen-
sions.
– Set the required mitre and/or bevel angle.
When sawing mitre angles from left to right, you must pull
the length stop (35) all the way out or remove it com-
pletely.
– Switch on the power tool.
– Slowly guide the tool arm downwards using the
handle (4).
– Saw through the workpiece applying uniform feed.
– Switch off the power tool and wait until the saw
blade (39) has come to a complete stop.
– Slowly guide the tool arm upwards.
Practical advice
Marking the Cutting Line (see figure L)
A laser beam shows you the cutting line of the saw blade.
This allows for exact positioning of the workpiece for sawing,
without having to open the retracting blade guard.
– To activate this, turn on the laser beam using the
switch (20).
– Align your mark on the workpiece with the right-hand
edge of the laser line.
Note: Before sawing, check whether the cutting line is still
indicated correctly. The laser beam can be misaligned due to
vibrations from intensive use, for example.
Permissible workpiece dimensions
Maximum workpiece dimensions:
Mitre Bevel Height x width [mm]
angle angle
at max. height
0° 0° 90 x 90
0° 45° 60 x 93
45° (left/ 0° 90 x 63
right)
45° (left) 45° 55 x 70
45° (right) 45° 55 x 70
Minimum workpiece dimensions (= all workpieces that can
be secured left or right of the saw blade using the supplied
screw clamps (15)): 130 x 50 mm (length x width)
Maximum cutting depth (0°/0°): 90 mm
Bosch Power Tools
Sawing workpieces of the same length (see figure M)
The length gauge (35) can be used for easily sawing work-
pieces of the same length.
– Loosen the clamping screw (33) and move the length
gauge (35) in the guide rail (32) to the required work-
piece length.
– Retighten the clamping screw (33).
Longer workpieces:
– Loosen the wing bolt (34) and pull out the guide rail (32)
as far as it will go.
– Retighten the wing bolt (34).
– Adjust the length gauge (35) to the required workpiece
length.
Sawing without a length gauge:
– Loosen the clamping screw (33) and move the length
gauge (35) in the guide rail (32) all the way out.
– Rotate the length gauge by 90°until it is flush with the
fence (8).
– Retighten the clamping screw (33).
Special workpieces
When sawing curved or round workpieces, these must be es-
pecially secured against slipping. At the cutting line, there
should be no gap between the workpiece, fence and saw
table.
If necessary, you will need to manufacture special fixtures.
Replacing insert plates (see figure N)
The insert plate (36) can become worn after long use of the
power tool.
Replace a defective insert plate.
– Bring the power tool into the work position.
– Unscrew the screws (46) using a commercially available
cross-headed screwdriver and remove the old insert
plate (36).
– Insert the new insert plate and screw the screws (46) in
tight again.
Working on mouldings
Mouldings can be sawn in two different ways:
Positioning of
workpiece
– Placed against
at max. width the fence
65 x 130
45 x 130
– Lying flat on the
65 x 91
saw table
35 x 91
45 x 91
Always check the set mitre and/or bevel angle first by mak-
ing trial cuts in scrap wood.
English | 31
Base moulding Crown moulding
1 609 92A 8KE | (09.05.2023)