Starting Operation; Working Advice - Bosch PKS 40 Manual Original

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18 | English
Cutting Marks
45 0
The 0° cutting mark (9) indicates the position of the saw
blade for right-angled cuts. The 45° cutting mark (8) indi-
cates 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

 Observe correct mains voltage! The voltage of the pow-
er 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 save energy, only switch the power tool on when us-
ing it.
To start the machine, first push the lock-off button 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 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 10 enables exact cuts along a workpiece
edge and cutting strips of the same dimension.
Loosen wing bolt 7 and slide the scale of the parallel guide 10
through the guide in the base plate 13. Adjust the desired cut-
ting width as the scale setting at the respective cutting mark 9
1 609 92A 06G | (12.4.13)
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
45 0 base plate of the circular saw can be guided alongside the aux-
iliary guide.
Sawing with Guide Rail (see figure 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; it pre-
vents fraying of the surface while sawing wooden materials.
For this, the teeth of the saw blade must face directly against
the rubber lip.
The guide rail 28 must not extend beyond the face side of
the workpiece where the cut is to be started.
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 light-
ly 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 adapt-
er 27 on to the guide rail 28.
– Adjust the desired cutting depth and the bevel angle. Ob-
serve the marks on the guide-rail adapter 27 for preadjust-
ment of the various bevel angles; see figure F.
– Align the circular saw with guide-rail adapter in such a man-
ner that the teeth of the saw blade 21 face against the rub-
ber lip. The position of the saw blade 21 depends on the
selected cutting angle. Do not saw into the guide rail.
0° 1-45°
Bosch Power Tools