Quick-Clamping Nut; Rotating The Machine Head - Bosch GWS Professional 24-300 Manual Original

When using diamond cutting discs, pay atten-
tion that the direction-of-rotation arrow on the
diamond cutting disc and the direction of rota-
tion of the machine (see direction-of-rotation ar-
row on the machine head) agree.
See graphics page for the mounting sequence.
To fasten the grinding/cutting disc, screw on
the clamping nut 12 and tighten with the two-
pin spanner; see Section "Quick-clamping Nut ".
After mounting the grinding tool and before
switching on, check that the grinding tool is
correctly mounted and that it can turn free-
ly. Make sure that the grinding tool does
not graze against the protection guard or
other parts.

Quick-clamping Nut

For convenient changing of grinding tools with-
out the use of additional tools, you can use the
quick-clamping nut 11 instead of the clamping
nut 12.
The quick-clamping nut 11 may be used only
for grinding or cutting discs.
Use only a flawless, undamaged quick-clamp-
ing nut 11.
When screwing on, pay attention that the side
of the quick-clamping nut 11 with printing
does not face the grinding disc; the arrow must
point to the index mark 20.
20
Bosch Power Tools
Lock the grinder spin-
dle with the spindle
lock button 3. To tight-
en the quick-clamping
nut, firmly turn the
grinding disc in clock-
wise direction.
spanner as shown in the illustration.

Rotating the Machine Head

Before any work on the machine itself, pull
the mains plug.
e. g., for cutting operations using the cutting
guide with dust extraction protection guard 17
or for left-handed persons.
Completely unscrew the four screws. Rotate the
machine head carefully, without removing it
from the housing, to the new position. Screw in
and tighten the four screws again.
English | 25
A properly attached,
undamaged quick-
clamping nut can be
loosened by hand
when turning the
knurled ring in anti-
clockwise direction.
Never loosen a tight
quick-clamping nut
with pliers. Always
use the two-pin span-
ner. Insert the two-pin
The machine head
can be rotated with
respect to the ma-
chine housing in
90° steps. In this
manner, the On/Off
switch can be
brought into a more
convenient posi-
tion for special
working situations,
3 609 929 B90 | (1.10.09)