Makita GA7020 Manuel D'instruction page 9

WARNING:
Always use supplied guard when flex wheel is on
•
tool. Wheel can shatter during use and guard helps
to reduce chances of personal injury.
Follow instructions for depressed center grinding
wheel/Multi-disc but also use plastic pad over wheel. See
order of assembly on accessories page in this manual.
Installing or removing abrasive disc
(optional accessory)
1
2
3
006740
NOTE:
Use sander accessories specified in this manual.
•
These must be purchased separately.
Mount the rubber pad onto the spindle. Fit the disc on the
rubber pad and screw the lock nut onto the spindle. To
tighten the lock nut, press the shaft lock firmly so that the
spindle cannot revolve, then use the lock nut wrench and
securely tighten clockwise.
To remove the disc, follow the installation procedure in
reverse.
OPERATION
WARNING:
It should never be necessary to force the tool. The
•
weight of the tool applies adequate pressure.
Forcing and excessive pressure could cause
dangerous wheel breakage.
ALWAYS replace wheel if tool is dropped while
•
grinding.
NEVER bang or hit grinding disc or wheel onto
•
work.
Avoid bouncing and snagging the wheel, especially
•
when working corners, sharp edges etc. This can
cause loss of control and kickback.
NEVER use tool with wood cutting blades and other
•
sawblades. Such blades when used on a grinder
frequently kick and cause loss of control leading to
personal injury.
CAUTION:
Never switch on the tool when it is in contact with
•
the workpiece, it may cause an injury to operator.
Always wear safety goggles or a face shield during
•
operation.
1. Lock nut
2. Abrasive disc
3. Rubber pad
9
After operation, always switch off the tool and wait
•
until the wheel has come to a complete stop before
putting the tool down.
Grinding and sanding operation
ALWAYS hold the tool firmly with one hand on rear
handle and the other on the side handle. 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 degrees 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.
15
A
B
006741
Operation with wire cup brush
(optional accessory)
1
2
006742
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.
Unplug tool and place it upside down allowing easy
access to spindle. Remove any accessories on spindle.
Mount urethane washer then 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.
NOTE:
When using wire cup brush, mount urethane
•
washer to the spindle. It will make it easier to
remove wire cup brush.
1. Wire cup brush
2. Urethane
washer