Starting Operation; Working Advice - Bosch GKS 190 Professional Notice Originale

OBJ_BUCH-813-001.book Page 25 Tuesday, September 30, 2008 1:13 PM

Starting Operation

Observe correct mains voltage! The voltage
of the power source must agree with the
voltage specified on the nameplate of the
machine. Power tools marked with 230 V
can also be operated with 220 V.
Switching On and Off
To start the machine, first push the lock-off but-
ton for the On/Off switch 2 and then press the
On/Off switch 1 and keep it pressed.
To switch off the machine, release the On/Off
switch 1.
Note: For safety reasons, the On/Off switch 1
cannot be locked; it must remain pressed during
the entire operation.

Working Advice

Protect saw blades against impact and shock.
Guide the machine evenly and with light feed in
the cutting direction. Excessive feed significant-
ly reduces the service life of the saw blade and
can cause damage to the power tool.
Sawing performance and cutting quality depend
essentially on the condition and the tooth form
of the saw blade. Therefore, use only sharp saw
blades that are suited for the material to be
worked.
Sawing Wood
The correct selection of the saw blade depends
on the type and quality of the wood and whether
lengthway or crossway cuts are required.
When cutting spruce lengthways, long spiral
chips are formed.
Beech and oak dusts are especially detrimental
to health. Therefore, work only with dust extrac-
tion.
Sawing with Parallel Guide (see figure D)
The parallel guide 10 enables exact cuts along a
workpiece edge and cutting strips of the same
dimension.
Bosch Power Tools
Loosen wing bolt 7 and slide the scale of the
parallel guide 10 through the guide in the base
plate 12. Adjust the desired cutting width as the
scale setting at the respective cutting mark 9 or
8; see Section "Cutting Marks". Tighten wing
bolt 7 again.
Sawing with Auxiliary Guide (see figure E)
For sawing large workpieces or straight edges, a
board or strip can clamped to the workpiece as
an auxiliary guide; the base plate of the circular
saw can be guided alongside the auxiliary guide.
Sawing with Guide Rail (see figure F–G)
The guide rail 28 is used to carry out straight
cuts.
The adhesive coating prevents the guide rail
from slipping and protects the surface of the
workpiece. The coating of the guide rail allows
the circular saw to glide easily.
The rubber lip on the guide rail acts as a splinter
guard that prevents fraying or tearing out of the
surface when sawing wooden materials. For
this, the teeth of the saw blade must face direct-
ly against the rubber lip.
The guide-rail adapter 27 is required for working
with the guide rail 28. The guide-rail adapter 27
is mounted in the same manner as the parallel
guide 10.
The following work steps are required for exact
cuts using the guide rail 28:
– Place the guide rail 28 on to the workpiece
projecting lightly over the side. Pay attention
that the side with the rubber lip faces to the
workpiece.
– Set the circular saw with the premounted
guide-rail adapter 27 on to the guide rail 28.
1 619 P06 540 | (30.9.08)
English | 25