Dust/Chip Extraction; Operation; Operating Modes - Bosch GKS Professional 18V-57 Originalbetriebsanleitung

OBJ_BUCH-2769-001.book Page 19 Wednesday, January 13, 2016 4:11 PM
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 3, unscrew the clamping bolt 25 turning
in rotation direction .
– Tilt back the retracting blade guard 13 and hold firmly.
– Remove the clamping flange 24 and the saw blade 23 from
the saw spindle 21.
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 23 and all clamping parts to be assem-
bled.
– Tilt back the retracting blade guard 13 and hold firmly.
– Place the saw blade 23 onto the mounting flange 22. The
cutting direction of the teeth (direction of arrow on the saw
blade) and the direction-of-rotation arrow on the retract-
ing blade guard 13 must correspond.
– Mount the clamping flange 24 and screw in the clamping
bolt 25 turning in rotation direction . Observe correct
mounting position of mounting flange 22 and clamping
flange 24.
– Press the spindle lock button 5 and keep it pressed.
– With the hex key 3, tighten the clamping bolt 25 turning in
rotation direction . The tightening torque is between
6–9 Nm, which corresponds to hand tight plus ¼ turn.

Dust/Chip Extraction

 Before any work on the power tool, remove the battery.
 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.
– 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.
Mounting the Extraction Adapter (see figure B)
Attach the extraction adapter 28 onto the chip ejector 16 un-
til it latches. Secure the extraction adapter 28 additionally
with the screw 27.
A vacuum hose with a diameter of 35 mm can be connected to
the extraction adapter 28.
Bosch Power Tools
 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 28
must be cleaned regularly.
External Dust Extraction
Connect the vacuum hose 35 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, remove the battery.
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 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 (GKS 18V-57 G)
It is best to place the machine on the face side of the blade
guard 17.
– Loosen the wing bolts 8 and 15. Tilt the saw sidewards.
Adjust the desired measure on the scale 9. Tighten the
wing bolts 8 and 15 again.
Note: For bevel cuts, the cutting depth is smaller than the set-
ting indicated on the cutting-depth scale 30.
Adjusting the Cutting Angle (GKS 18V-57)
It is best to place the machine on the face side of the blade
guard 17.
– Loosen wing bolt 8. Tilt the saw sidewards. Adjust the de-
sired setting at the scale 9. Tighten wing bolt 8 again.
Note: For bevel cuts, the cutting depth is smaller than the set-
ting indicated on the cutting-depth scale 30.
English | 19
1 609 92A 256 | (13.1.16)