Bosch Professional GKS 235 Turbo Instructions Manual page 9

OBJ_BUCH-1826-005.book Page 9 Friday, October 21, 2016 2:17 PM
– Tilt back the retracting blade guard 12 and hold firmly.
– Place the saw blade 20 on to the mounting flange 21. The
cutting direction of the teeth (direction or arrow on saw
blade) and the direction-of-rotation arrow on the blade
guard 1 must correspond.
– Mount the clamping flange 19 and screw in the clamping
bolt 18 turning in rotation direction . Observe correct
mounting position of mounting flange 21 and clamping
flange 19.
– Press the spindle lock button 5 and keep it pressed.
– With the Hex key 17, tighten the clamping bolt 18 turning
in rotation direction . The tightening torque is between
10–12 Nm, which corresponds to hand tight plus ¼ turn.
Dust/Chip Extraction
 Before any work on the machine itself, pull the mains
plug.
 Dusts from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one's health. Touching or breathing-in the dusts can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dusts, such as oak or beech dust, are considered
as carcinogenic, especially in connection with wood-treat-
ment additives (chromate, wood preservative). Materials
containing asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suitable
for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the mate-
rials to be worked.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Mounting the Extraction Adapter (see figure B)
Attach the extraction adapter 24 onto the chip ejector 16 un-
til it latches. Secure the extraction adapter 24 additionally
with the screw 23.
A vacuum hose with a diameter of 35 mm can be connected to
the extraction adapter 24.
 The extraction adapter may not be mounted when no
external dust extraction is connected. Otherwise the ex-
traction channel can become clogged.
 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
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.
Bosch Power Tools
Operation
Operating Modes
 Before any work on the machine 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 anticlockwise direc-
tion.
Adjusting the Cutting Angle
It is best to place the machine 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
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
nameplate of the machine. Power tools marked with
230 V can also be operated with 220 V.
Switching On and Off
3 601 EA2 0K./3 601 EA2 0L./3 601 EA2 0F.:
To start the machine, press the On/Off switch 3 and keep it
pressed.
To lock the pressed On/Off switch 3, press the lock-on button 2.
To switch off the machine, 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.
1 609 92A 2G5 | (21.10.16)
English | 9
45 0