Preparing For Operation; Adjusting Mitre Angles - Bosch GCM 12 SDE Professional Manual Original

36 | English
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.
– Swivel the retracting blade guard (16) to the back and
hold it in this position.
– Place the new saw blade on the inner clamping
flange (50).
– Attach the clamping flange (48) and the SDS bolt (32).
Press the spindle lock (43) until it engages and tighten
the SDS bolt by turning it anticlockwise.
– Slowly push the retracting blade guard back down.
Operation
Pull the plug out of the socket before carrying out any
u
work on the power tool.
Transport Safety Lock (see figure E)
The transport safety lock (10) 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 (13) to re-
lease the transport safety lock (10).
– Pull the transport safety lock (10) all the way out.
– Slowly guide the tool arm upwards.
Locking the power tool (transport position)
– Loosen the locking screw (6) if it is clamping the slide
device (37) in place. Pull the tool arm fully forward and
tighten the locking screw again to lock the slide device.
Vertical bevel angle range
–2° to +40° Left
–2° to +35° Right
> 40° Left
> 35° Right
Horizontal bevel angle range
> 45° Left
Right
Clamping the workpiece (see figure H)
To ensure maximum safety while working, the workpiece
must always be firmly clamped.
Do not saw workpieces that are too small to clamp firmly.
– Press the workpiece firmly against the fences (1) and (2).
– Insert the supplied screw clamp (40) into one of the cor-
responding holes (31).
– Loosen the wing bolt (52) and adjust the screw clamp to
the workpiece. Tighten the wing bolt again.
– Tighten the threaded rod (51) to fix the workpiece in
place.
1 609 92A 6SN | (12.07.2021)
– Screw the adjusting screw (41) all the way upwards.
– To lock the saw table (20) in place, tighten the locking
knob (23).
– Swing the tool arm downwards by the handle (13) until
you can press the transport safety lock (10) completely
inwards.
The tool arm is now securely locked and ready for transport-
ation.

Preparing for operation

Extending the saw table (see figure F)
The free end of long workpieces must have something
placed underneath it or be supported.
The saw table can be extended left and right using the saw
table extensions (29).
– Loosen the clamping screw (18).
– Pull out the saw table extension (29) to the required
length.
– Retighten the clamping screw (18) to fix the saw table ex-
tension.
Moving the fence (see figure G)
When sawing mitre and/or bevel angles, you have to pull the
left-hand or right-hand adjustable fence (2) outwards de-
pending on the cutting direction, or remove it completely.
If necessary, reinstall the adjustable fence (2) after making
the cut.
– Loosen the locking screw (38).
– Pull the adjustable fence (2) all the way out.
– Loosen the locking screw (38).
– Pull the adjustable fence (2) all the way out.
– Lift the adjustable fence upwards and out of the way.
– Loosen the locking screw (38).
– Pull the adjustable fence (2) all the way out.
Releasing the workpiece
– To loosen the screw clamp, turn the threaded rod (51)
anticlockwise.

Adjusting mitre angles

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.
Bosch Power Tools