Maintenance; Fig.4 - Makita GA4541R Instruction Manual
Hide thumbs
Also See for GA4541R:
- Instruction manual (108 pages) ,
- Instruction manual (88 pages) ,
- Instruction manual (92 pages)
Table of Contents
Available languages
Available languages
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 the B direction or it will cut into
the workpiece. Once the edge of the wheel has been
rounded off by use, the wheel may be worked in both A
and B 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.18: 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.19: 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.20: 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 running tool with no
load, insuring that no one is in front of or in line
with brush.
•
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.21: 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. When
using brush, avoid applying too much pressure which causes
over bending of wires, leading 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.
•
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.
•
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.22: 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.
When using wire wheel brush, avoid applying too much
pressure which causes over bending of wires, leading
to premature breakage.
MAINTENANCE
CAUTION:
•
Always be sure that the tool is switched off and
unplugged before attempting to perform inspec-
tion or maintenance.
•
Never use gasoline, benzine, thinner, alcohol
or the like. Discoloration, deformation or cracks
may result.
► Fig.23: 1. Exhaust vent 2. Inhalation vent
The tool and its air vents have to be kept clean.
Regularly clean the tool's air vents or whenever the
vents start to become obstructed.
To maintain product SAFETY and RELIABILITY,
repairs, carbon brush inspection and replacement, any
other maintenance or adjustment should be performed
by Makita Authorized Service Centers, always using
Makita replacement parts.
11 ENGLISH
Table of Contents
