Bosch GCM 305-254 D Professional Manual Original página 35

The free end of long and heavy workpieces must have some-
thing placed underneath it or be supported.
Make sure that the retracting blade guard operates properly
and that it can move freely. The retracting blade guard must
open when the tool arm is guided downwards. When the tool
arm is guided upwards, the retracting blade guard must
close again over the saw blade and lock in the uppermost po-
sition of the tool arm.
Position of the operator (see figure N)
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 with slide movement
– For cuts made using the slide device (2) (wide work-
pieces), loosen the locking screw (1) if it is tightened.
– Set the required mitre and/or bevel angle as necessary.
– Press the workpiece firmly against the fences (27) and
(28).
– Firmly clamp the workpiece as appropriate for its dimen-
sions.
– Pull the tool arm away from the fence (27) until the saw
blade is in front of the workpiece.
– Switch the power tool on.
– Slowly guide the tool arm downwards using the handle
(9).
– Now push the tool arm towards the fences (27) and (28)
and saw through the workpiece with uniform feed.
– Switch off the power tool and wait until the saw blade has
come to a complete stop.
– Slowly guide the tool arm upwards.
Sawing without slide movement (cutting off) (see figure
O)
– For cuts without slide movement (small workpieces),
loosen the locking screw (1) if it is tightened. Push the
tool arm all the way towards the fence (27) and retighten
the locking screw (1).
– Set the required mitre and/or bevel angle as necessary.
– Press the workpiece firmly against the fences (27) and
(28).
– Firmly clamp the workpiece as appropriate for its dimen-
sions.
– Switch the power tool on.
– Slowly guide the tool arm downwards using the handle
(9).
– Saw through the workpiece applying uniform feed.
– Switch off the power tool and wait until the saw blade has
come to a complete stop.
– Slowly guide the tool arm upwards.
Bosch Power Tools
Practical advice
Marking the cutting line (see figure P)
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 the switch (5).
– Position your mark on the workpiece between the two
laser lines.
Note: Before sawing, check if the cutting width is still indic-
ated correctly Adjusting the Laser. Vibrations during intens-
ive use, for example, can cause the laser beams to become
misaligned.
Permissible workpiece dimensions
Maximum workpiece dimensions:
Mitre angle Bevel angle
0° 0°
45° (left/right) 0°
45° (left) 45° (left)
45° (right) 45° (right)
0° 45° (left)
0° 45° (right)
Minimum workpiece dimensions (= all workpieces that can
be secured left or right of the saw blade using the supplied
screw clamps (41)): 100 x 40 mm (length x width)
Maximum cutting depth (0°/0°): 90 mm
Adjusting the Depth Stop (Sawing the Groove) (see
figure Q)
The depth stop needs to be adjusted if you wish to saw a
groove.
– Swivel the depth stop (39) forwards.
– Swivel the tool arm by the handle (9) into the required
position.
– Turn the adjusting screw (38) until the end of the screw
touches the depth stop (39).
– Slowly guide the tool arm upwards.
Sawing workpieces of the same length (see figure R)
The left or right length stop (36) can be used for easily saw-
ing workpieces of the same length.
– Turn the length stop (36) upwards.
– Set the saw table extension (25) to the required work-
piece length.
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 S)
The insert plates (16) can become worn after prolonged use
of the power tool.
English | 35
Height x width
[mm]
90 x 305
90 x 215
55 x 215
30 x 215
55 x 305
30 x 305
1 609 92A 8HX | (23.03.2023)