Starting Operation; Working Advice - Bosch GKS Professional 55 Manual Original

Loosen the clamping lever 26. For a smaller cut-
ting depth, pull the saw away from the base
plate 15; for a larger cutting depth, push the
saw toward the base plate 15. Adjust the de-
sired cutting depth at the cutting-depth scale.
Tighten the clamping lever 26 again.
The tightening tension of the clamping lever 26
can be readjusted. For this, unscrew the clamp-
ing lever 26, and screw it back again turned off-
set by at least 30° in anticlockwise direction.
Adjusting the Cutting Angle
It is best to place the machine on the face side
of the blade guard 18.
Loosen the wing bolts 8 and 16. Tilt the saw
sidewards. Adjust the desired measure on the
scale 6. Tighten the wing bolts 8 and 16 again.
Note: For bevel cuts, the cutting depth is small-
er than the setting indicated on the cutting-
depth scale 27.
Cutting Marks
45 0
The 0° cutting mark (11) indicates the position
of the saw blade for right-angled cuts. The 45°
cutting mark (10) indicates the position of the
saw blade for 45° cuts.
For precise cuts, position the circular saw
against the workpiece as shown in the figure. It
is best to carry out a trial cut.

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.
Bosch Power Tools
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.
Reduced starting current (GKS 55 CE)
The electronic reduced starting current limits
the power consumption when switching the tool
on and enables operation from a 13 ampere
fuse.
Constant Electronic Control (GKS 55 CE)
Constant electronic control holds the speed
constant at no-load and under load, and ensures
uniform working performance.
Speed preselection (GKS 55 CE)
The required speed can be preselected with the
thumbwheel 3 (also while running).
The required speed depends on the saw blade
being used and on the material being worked
45 0
(see overview of saw blades at the end of these
operating instructions).

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.
English | 25
1 609 929 T48 | (20.11.09)