Bosch GKS 18 V-LI Professional - Manual (Page 18)

18 | English
1 609 92A 019 | (15.1.13) Bosch Power Tools
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
14 and keep it pressed.
 The spindle lock button 14 may be actuated only when
the saw spindle is at a standstill. Otherwise, the power
tool can be damaged.
– With the Allen key 16, unscrew the clamping bolt 22 turn-
ing in rotation direction .
– Tilt back the retracting blade guard 7 and hold firmly.
– Remove the clamping flange 21 and the saw blade 20 from
the saw spindle 18.
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 7 and hold firmly.
– Place the saw blade 20 onto the mounting flange 19. 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
7 must correspond.
– Mount the clamping flange 21 and screw in the clamping
bolt 22 turning in rotation direction . Observe correct
mounting position of mounting flange 19 and clamping
flange 21.
– Press the spindle lock button 14 and keep it pressed.
– Tighten the clamping bolt 16 with the Allen key 22 by turn-
ing in rotation direction . The tightening torque is
6–9 Nm, which corresponds to hand tight plus ¼ turn or
3 graduation marks of the marks
23 on the blade guard 4.
Dust/Chip Extraction
 Before any work on the power tool, remove the battery.
 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.
– To achieve a high degree of dust extraction, use the vac-
uum cleaner type GAS 25/GAS 50/GAS 50 M for wood
or GAS 50 MS for wood and/or mineral dust in conjunc-
tion with this power tool.
– 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)
Fasten the extraction adapter
26 to the base plate 6 with the
fastening screw 25.
A vacuum hose with a diameter of 35 mm can be connected to
the extraction adapter
26.
 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 26
must be cleaned regularly.
External Dust Extraction
Connect the vacuum hose
27 to a vacuum cleaner (accesso-
ry). An overview for connecting to various vacuum cleaners
can be found at the end of this manual.
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 readjust-
ed. For this, unscrew the clamping lever 29, and screw it back
again turned offset by at least 30° in anticlockwise direction.
Adjusting the Cutting Angle
It is best to place the machine on the face side of the blade
guard
4.
Loosen wing bolt 11. Tilt the saw sidewards. Adjust the de-
sired setting at the scale 13. Tighten wing bolt 11 again.
Note: For bevel cuts, the cutting depth is smaller than the set-
ting indicated on the cutting-depth scale
28.
Cutting Marks
The 0° cutting mark ( 9) indicates the position of the saw
blade for right-angled cuts. The 45° cutting mark ( 10) 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.
45° 0° 0° 45°
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