Hilti WSC 85 Mode D'emploi page 17

3. Operation
Before operation
Before switching on the machine, check to
ensure that the saw blade runs true and ro-
tates freely, and that the riving knife is cor-
rectly adjusted.
■ Caution! Disconnect the supply cord plug
from the mains socket before adjusting the
riving knife. The thickness of the riving knife
must be less than the cutting width of the
saw blade and greater than or equal to the
thickness of the blade's steel disc.
For safety reasons, the riving knife must always
be used. The riving knife is designed to prevent
jamming/sticking of the saw blade. It should be
adjusted while cutting depth is set at maximum.
Loosen the fastening screws 14, adjust the riv-
ing knife 9 (fig. 5) and then retighten the screws
14.
■ Remove any adjusting tools or wrench-
es etc. before starting the machine.
Operation
■ Hold the machine securely and maintain
a secure stance.
■ Put the machine down only after the piv-
oting guard has closed.
The mains supply voltage must correspond with
the information printed on the rating plate.
Switching the machine ON/OFF
■ Caution! Do not switch on the machine
while the blade is in contact with the work-
piece.
Switching on: Press the switch-on interlock
17 and the ON switch 18 simultaneously.
Switching off: Release the ON switch 18.
The circular saw is equipped with an automat-
ic saw blade brake. The braking procedure be-
gins immediately after releasing the ON/OFF
switch 18, causing the saw blade to come to
a standstill.
Printed: 14.05.2014 | Doc-Nr: PUB / 5071332 / 000 / 02
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Protecting the saw blade
■ Protect the circular saw blade from damage.
■ Never lay the circular saw blade down on
hard materials. The carbide-tipped teeth could
suffer damage.
Changing the saw blade (Fig. 3)
■ Caution! Disconnect the supply cord
plug from the mains socket before
changing the saw blade.
Lay the machine down on the supporting ribs
at the motor end. When changing a saw blade,
prevent rotation of the motor spindle by using
one hand to press the spindle lockbutton 10.
Removing the saw blade (Fig. 3)
The hex. socket wrench required for releas-
ing the flange screw is located beneath the
motor endcap. Adjust the saw to a cutting
depth of 0 by way of the cutting depth adjust-
ing lever 1. Use the hex. socket wrench 19 to
unscrew the screw 11 in a counter-clockwise
direction and remove the clamping flange 12
(fig. 3). Swing back the pivoting guard 13, hold
it securely in place and remove the saw blade.
Fitting the saw blade (Fig. 3/5)
Note the correct direction of rotation when
fitting the saw blade. The teeth and the arrow
printed on the saw blade must point in the
direction of the arrow on the upper part of the
blade guard. Clean wood chips and other dirt
or dust etc. from the surfaces and check that
the inner clamping flange 12 is correctly
seated. Fit the clamping flange 12 and then
insert and tighten the screw 11. The thick -
ness of the riving knife must be less than
the cutting width of the saw blade and
greater than or equal to the thickness of
the steel disc of the blade.
■ Check the data for the saw blade to
ensure that it matches the data for the ma-
chine.
4. Dust extraction
NOTE
The circular saw is equipped with a hose
connector suitable for use with convention-
al vacuum cleaner hoses with a diameter of
27 mm. In order to connect the vacuum clean-
er hose to the saw, use of a suitable adapter
may be necessary.
CAUTION
Dusts are hazardous to the health and can cause
respiratory or skin diseases and allergic reac-
tions.
WARNING
Certain dusts are considered to be carcinogenic
(cause cancer). These include mineral dust as
well as oak and/or beech wood dust, particu-
larly in conjunction with additional substances
used for the treatment of wood (chromate, wood
preservatives).
CAUTION
Use a Hilti vacuum cleaner of a type suitable
for the applicable application. Use a respi-
ratory protector of the P2 filter class with
half-mask facepiece if no dust removal sys-
tem is available or its use is impossible. In
addition, to keep the concentration of dust
low, always ensure good ventilation.
Use of a dust extraction system improves saw
dust removal performance, reduces the amount
of dust in the surrounding atmosphere and pre-
vents saw dust being spread over a wide area.
Connect the external extraction system when
you intend to work with the saw over a long pe-
riod or when materials that produce hazardous
dust are to be cut.
The extraction adapter 15 should only be left in
place on the machine when an external ex-
traction system is in use. The exit opening may
otherwise become blocked, especially when
cutting damp wood. Fit the extraction adapter
from the front, with the opening facing the rear
of the machine, and insert it into the dovetail
socket until it clicks into place. The extraction
system will be attached securely only when the
connector has been felt to click into place.
■ Observe the accident prevention regulations.
4.1 Procedure if the extraction adapter is
blocked
1. Disconnect the supply cord plug from the
power outlet.
2. Clean out the extraction adapter.
3. Check for misalignment or binding of
moving parts, breakage of parts and any
other condition that may affect the power
tool's operation.
5. Using the saw
■ Always disconnect the supply cord plug
from the mains socket before making any
adjustments to the machine.
Sawing along a line
Rest the front part of the baseplate on the
workpiece, switch on the machine and push
the circular saw forward evenly in the
direction of the cut.
The baseplate is equipped with four cutting
line indicators 4 for 0°, 22.5°, 45° and 60°.
The edge of the cutting line indicator
corresponds with the inside edge of the saw
blade.
Sawing using the parallel guide (Fig. 4)
The parallel guide 5 permits precise cuts to be
made parallel to the edge of a workpiece or,
respectively, permits strips of equal width to
15