Makita 9557HNR Manuel D'instructions page 10

CAUTION:
Never switch on the tool when it
is in contact with the workpiece, it may cause an
injury to operator.
CAUTION:
Always wear safety goggles or a
face shield during operation.
CAUTION:
After operation, always switch off
the tool and wait until the wheel has come to a
complete stop before putting the tool down.
CAUTION:
ALWAYS hold the tool firmly with
one hand on housing and the other on the side
grip (handle).
Grinding and sanding operation
► Fig.9
Turn the tool on and then apply the wheel or disc to the
workpiece.
In general, keep the edge of the wheel or disc at an
angle of about 15° to the workpiece surface.
During the break-in period with a new wheel, do not
work the grinder in forward direction or it may cut into
the workpiece. Once the edge of the wheel has been
rounded off by use, the wheel may be worked in both
forward and backward direction.
Operation with abrasive cut-off /
diamond wheel
Optional accessory
WARNING:
When using an abrasive cut-off
/ diamond wheel, be sure to use only the special
wheel guard designed for use with cut-off wheels.
(In some European countries, when using a diamond
wheel, the ordinary guard can be used. Follow the
regulations in your country.)
WARNING:
NEVER use cut-off wheel for side
grinding.
WARNING:
Do not "jam" the wheel or apply
excessive pressure. Do not attempt to make an
excessive depth of cut. Overstressing the wheel
increases the loading and susceptibility to twisting
or binding of the wheel in the cut and the possibility
of kickback, wheel breakage and overheating of the
motor may occur.
WARNING:
Do not start the cutting operation
in the workpiece. Let the wheel reach full speed
and carefully enter into the cut moving the tool
forward over the workpiece surface. The wheel
may bind, walk up or kickback if the power tool is
started in the workpiece.
WARNING:
During cutting operations, never
change the angle of the wheel. Placing side pres-
sure on the cut-off wheel (as in grinding) will cause
the wheel to crack and break, causing serious per-
sonal injury.
WARNING:
A diamond wheel shall be oper-
ated perpendicular to the material being cut.
► Fig.10: 1. Lock nut 2. Abrasive cut-off wheel / dia-
mond wheel 3. Inner flange 4. Wheel guard
for abrasive cut-off wheel / diamond wheel
As for the installation, follow the instructions for
depressed center wheel.
The direction for mounting the lock nut and the
inner flange varies by wheel type and thickness.
Refer to the following figures.
When installing the abrasive cut-off wheel:
► Fig.11: 1. Lock nut 2. Abrasive cut-off wheel
(Thinner than 4mm (5/32")) 3. Abrasive cut-
off wheel (4mm (5/32") or thicker) 4. Inner
flange
When installing the diamond wheel:
► Fig.12: 1. Lock nut 2. Diamond wheel (Thinner
than 4mm (5/32")) 3. Diamond wheel (4mm
(5/32") or thicker) 4. Inner flange
Operation with wire cup brush
Optional accessory
CAUTION:
Check operation of brush by run-
ning tool with no load, insuring that no one is in
front of or in line with brush.
CAUTION:
Do not use brush that is damaged,
or which is out of balance. Use of damaged brush
could increase potential for injury from contact with
broken brush wires.
► Fig.13: 1. Wire cup brush
Unplug tool and place it upside down allowing easy
access to spindle.
Remove any accessories on spindle. Thread wire cup
brush onto spindle and tighten with supplied wrench.
NOTICE:
Avoid applying too much pressure
which causes over bending of wires when using
brush. It may lead to premature breakage.
Operation with wire wheel brush
Optional accessory
CAUTION:
Check operation of wire wheel
brush by running tool with no load, insuring that
no one is in front of or in line with the wire wheel
brush.
CAUTION:
Do not use wire wheel brush that
is damaged, or which is out of balance. Use of
damaged wire wheel brush could increase potential
for injury from contact with broken wires.
CAUTION:
ALWAYS use guard with wire
wheel brushes, assuring diameter of wheel fits
inside guard. Wheel can shatter during use and
guard helps to reduce chances of personal injury.
► Fig.14: 1. Wire wheel brush
Unplug tool and place it upside down allowing easy
access to spindle.
Remove any accessories on spindle. Thread wire wheel
brush onto spindle and tighten with the wrenches.
NOTICE:
Avoid applying too much pressure
which causes over bending of wires when
using wire wheel brush. It may lead to premature
breakage.
10 ENGLISH