Operating Modes; Starting Operation; Working Instructions - Bosch Professional GKS 235 Manual Original

OBJ_BUCH-344-006.book Page 10 Monday, January 23, 2017 8:52 AM
10 | English (US)
 Do not connect a dust bag to the extraction adapter.
Otherwise the extraction system can become clogged.
To ensure optimum extraction, the extraction adapter 24
must be cleaned regularly.
External Dust Extraction
Connect the vacuum hose 30 to a vacuum cleaner (accesso-
ry). An overview for connecting to various vacuum cleaners
can be found at the end of this manual.
The machine can be plugged directly into the receptacle of a
Bosch all-purpose vacuum cleaner with remote starting con-
trol. The vacuum cleaner starts automatically when the ma-
chine is switched on.
The vacuum cleaner must be suitable for the material being
worked.
When vacuuming dry dust that is especially detrimental to
health or carcinogenic, use a special vacuum cleaner.
Operation

Operating Modes

 Before any work on the power tool itself, pull the mains
plug.
Adjusting the Cutting Depth (see figure C)
 Adjust the cutting depth to the thickness of the work-
piece. Less than a full tooth of the blade teeth should be
visible below the workpiece.
Loosen the clamping lever 25. For a smaller cutting depth,
pull the saw away from the base plate 14; for a larger cutting
depth, push the saw toward the base plate 14. Adjust the de-
sired cutting depth at the cutting-depth scale. Tighten the
clamping lever 25 again.
The tightening tension of the clamping lever 25 can be read-
justed. For this, unscrew the clamping lever 25, and screw it
back again turned offset by at least 30° in counterclockwise
direction.
Adjusting the Cutting Angle
It is best to place the power tool on the face side of the blade
guard 1.
Loosen the wing bolts 7 and 15. Tilt the saw sidewards. Ad-
just the desired measure on the scale 6. Tighten the wing
bolts 7 and 15 again.
Note: For bevel cuts, the cutting depth is smaller than the set-
ting indicated on the cutting-depth scale 26.
Cutting Marks
45° 0°
1 609 92A 35X | (23.1.17)
The 0° cutting mark 10 indicates the position of the saw blade
for right-angled cuts. The 45° cutting mark 9 indicates the po-
sition 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
type plate of the power tool.
Switching On and Off
To start the power tool, press the On/Off switch 3 and keep it
pressed.
To lock the pressed On/Off switch 3, push the lock-on button
2 toward the right or left.
To switch off the power tool, release the On/Off switch 3 or
when it is locked with the lock-on button 2, briefly press the
On/Off switch 3 and then release it.
To save energy, only switch the power tool on when you in-
tend to use it.

Working Instructions

Protect saw blades against impact and shock.
Guide the power tool evenly and with moderate feed in the
cutting direction. A high feed rate significantly reduces the
service life of the cutting tools and can damage the machine.
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.
 Before any work on the power tool itself, pull the mains
plug.
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 11 enables exact cuts along a workpiece
edge and cutting strips of the same dimension.
Loosen wing bolt 8 and slide the scale of the parallel guide 11
through the guide in the base plate 14. Adjust the desired cut-
ting width as the scale setting at the respective cutting mark
10 or 9; see Section "Cutting Marks". Tighten wing bolt 8
again.
45° 0°
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 aux-
iliary guide.
Bosch Power Tools