Bosch GCM 254 Professional Originalbetriebsanleitung Seite 29

– Determine the cause of the blockage and eliminate it.
Self-generated dust extraction (see figure B)
For basic chip collection, use the dust bag (1) provided.
– Attach the dust bag (1) to the chip ejector (22).
During sawing, the dust bag must not come into contact with
moving tool components.
Always empty the dust bag in good time.
Check and clean the dust bag each time after using.
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When sawing aluminium, remove the dust bag to avoid
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the risk of fire.
External Dust Extraction
You can also attach a dust extraction hose (35 mm dia-
meter) to the chip ejector (22) for extraction.
– Connect the dust extraction hose to the chip ejector (22).
The dust extractor must be suitable for the material being
worked.
When extracting dry dust that is especially detrimental to
health or carcinogenic, use a special dust extractor.
Changing the saw blade (see figures C1−C3)
Pull the plug out of the socket before carrying out any
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work on the power tool.
Wear protective gloves when fitting the saw blade.
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There is a risk of injury when touching the saw blade.
Only use saw blades that have a maximum permitted speed
higher than the no-load speed of the power tool.
Only use saw blades that match the specifications given in
this operating manual and that have been tested and marked
in accordance with EN 847-1.
Only use saw blades that are recommended by the power
tool manufacturer and are suitable for use on the material
you want to saw. This will prevent the saw teeth overheating
when sawing.
Removing the Saw Blade
– Bring the power tool into the work position.
– Swivel the retracting blade guard (7) to the back and hold
it in this position.
– Turn the hex socket screw (37) with the hex key (8 mm)
and at the same time push the spindle lock (27) until it
engages.
– Keep holding the spindle lock (27) and loosen the hex
socket screw (37) by turning it clockwise (left-hand
thread).
– Remove the clamping flange (38).
– Remove the saw blade (39).
– Slowly push the retracting blade guard back down.
Fitting the saw blade
When fitting the saw blade, make sure that the cutting
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direction of the teeth (arrow direction on the saw
blade) matches the direction of the arrow on the pro-
tective guard.
If required, clean all the parts you want to fit before installing
them.
Bosch Power Tools
– Swivel the retracting blade guard (7) to the back and hold
it in this position.
– Place the new saw blade on the inner clamping
flange (40).
– Fit the clamping flange (38) and the hex socket
screw (37). Press the spindle lock (27) until it engages
and tighten the hex socket screw by turning it anticlock-
wise.
– Slowly push the retracting blade guard back down.
Operation
Pull the plug out of the socket before carrying out any
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work on the power tool.
Transport Safety Lock (see figure D)
The transport safety lock (25) makes it easier to handle the
power tool when transporting it to various working locations.
Unlocking the power tool (work position)
– Press the tool arm down slightly by the handle (4) to re-
lease the transport safety lock (25).
– Pull the transport safety lock (25) all the way out.
– Slowly guide the tool arm upwards.
Locking the power tool (transport position)
– To lock the saw table (10) in place, tighten the locking
knob (11).
– Swing the tool arm downwards by the handle (4) until you
can press the transport safety lock (25) all the way in.
The tool arm is now securely locked and ready for transport-
ation.
Preparing for operation
To ensure precise cuts, the basic settings of the power tool
must be checked and adjusted as necessary after intensive
use.
Experience and suitable special tools are required for this.
A Bosch after-sales service point will handle this work
quickly and reliably.
Extending the saw table (see figure E)
The free end of long and heavy workpieces must have some-
thing placed underneath it or be supported.
The flexible connector system of the workpiece supports (9)
enables a multitude of extension variants.
– Insert the workpiece support (9) into the openings on the
power tool or into the openings of the second workpiece
support as required.
Never carry the power tool using the workpiece sup-
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ports.
Only use the transport devices to transport the power
tool.
Folding Out the Fence (see figure F)
You have to fold out the folding fence (16) to saw bevel
angles.
– Fold out the folding fence (16).
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1 609 92A 8KE | (09.05.2023)