Bosch Professional GKS 235 Manual Original página 31

OBJ_BUCH-344-006.book Page 31 Monday, January 23, 2017 8:52 AM
Assembly
Mounting/Replacing the Saw Blade
 Before any work on the machine itself, pull the mains
plug.
 When mounting the saw blade, wear protective gloves.
Danger of injury when touching the saw blade.
 Only use saw blades that correspond with the charac-
teristic data given in the operating instructions.
 Do not under any circumstances use grinding discs as
the cutting tool.
Selecting a Saw Blade
An overview of recommended saw blades can be found at the
end of this manual.
Removal of the Saw Blade (see figure A)
For changing the cutting tool, it is best to place the machine
on the face side of the motor housing.
– Press the spindle lock button 5 and keep it pressed.
The spindle lock button 5 may be actuated only when
the saw spindle is at a standstill. Otherwise, the power
tool can be damaged.
– With the hex key 17, unscrew the clamping bolt 18 turning
in rotation direction .
– Tilt back the retracting blade guard 12 and hold firmly.
– Remove the clamping flange 19 and the saw blade 20 from
the saw spindle 22.
Mounting the Saw Blade (see figure A)
For changing the cutting tool, it is best to place the machine
on the face side of the motor housing.
– Clean the saw blade 20 and all clamping parts to be assem-
bled.
– 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.
 Dust 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 dust can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dust, such as oak or beech dust, is considered car-
cinogenic, especially in connection with wood-treatment
additives (chromate, wood preservative). Materials con-
taining asbestos may only be worked by specialists.
Bosch Power Tools
– 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
materials to be worked.
 Prevent dust accumulation at the workplace. Dust 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
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 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.
English | 31
1 609 92A 35X | (23.1.17)