Starting Operation; Working Advice - Bosch Professional GKS 18 V-LI Manual Original

Loosen the clamping lever 29. For a smaller cutting depth,
pull the saw away from the base plate 6; for a larger cutting
depth, push the saw toward the base plate 6. Adjust the de-
sired cutting depth at the cutting-depth scale. Tighten the
clamping lever 29 again.
The tightening tension of the clamping lever 29 can be read-
justed. For this, unscrew the clamping lever 29, and screw it
back again turned offset by at least 30° in anticlockwise direc-
tion.
Adjusting the Cutting Angle
It is best to place the machine on the face side of the blade
guard 4.
Loosen wing bolt 11. Tilt the saw sidewards. Adjust the de-
sired setting at the scale 13. Tighten wing bolt 11 again.
Note: For bevel cuts, the cutting depth is smaller than the set-
ting indicated on the cutting-depth scale 28.
Cutting Marks
0° 45°
The 0° cutting mark 9 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 work-
piece as shown in the figure. It is best to carry out a trial cut.

Starting Operation

Inserting the battery
 Use only original Bosch lithium-ion batteries with the
voltage listed on the nameplate of your power tool.
Using other batteries can lead to injuries and pose a fire
hazard.
Insert the charged battery 3 from the front into the base of the
power tool. Push the battery completely into the base until
the red stripe can no longer be seen and the battery is secure-
ly locked.
Switching On and Off
To start the machine, first push the lock-off button for the
On/Off switch 1 and then press the On/Off switch 2 and keep
it pressed.
To switch off the machine, release the On/Off switch 2.
Note: For safety reasons, the On/Off switch 2 cannot be
locked; it must remain pressed during the entire operation.
To save energy, only switch the power tool on when using it.
Run-on Brake
An integrated run-on brake reduces the run-on period of the
saw blade after switching off the machine.
Bosch Power Tools
0° 45°
Protection Against Deep Discharging
The lithium-ion battery is protected against deep discharging
by the "Electronic Cell Protection (ECP)". When the battery is
empty, the machine is switched off by means of a protective
circuit: The inserted tool no longer rotates.

Working Advice

Protect saw blades against impact and shock.
Guide the machine evenly and with light feed in the cutting di-
rection. Excessive feed significantly 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. There-
fore, 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 extraction.
Sawing with Parallel Guide (see figure D)
The parallel guide 8 enables exact cuts along a workpiece
edge and cutting strips of the same dimension.
Sawing with Auxiliary Guide (see figure E)
For sawing large workpieces or straight edges, a board or
strip can be 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 G)
The guide rail 33 is used to carry out straight cuts.
Note: Use the guide rail 33 only for right-angled cuts. When
using for mitre cuts, the guide rail 33 can become damaged.
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.
Place the circular saw directly onto the guide rail 33. Fasten
the guide rail 33 with suitable clamping devices, e. g., screw
clamps, on the workpiece in such a manner that the narrow
leg of the guide rail 33 faces toward the saw blade.
The guide rail 33 must not extend beyond the face side of
the workpiece where the cut is to be started.
Switch the machine on and guide it in the cutting direction ap-
plying moderate and steady feed.
Two guide rails can be connected using the connection piece
34. Clamping is carried out with the four screws located in the
connection piece.
Recommendations for Optimal Handling of the Battery
Protect the battery against moisture and water.
Store the battery only within a temperature range between
–20 °C and 50 °C. As an example, do not leave the battery in
the car in summer.
English | 19
1 609 92A 14R | (3.2.15)