Makita GA5040, Instruction Manual

Page: 10 / 92

10
NOTE:
•
Ezynut can be loosened by hand as long as the
arrow points the notch. Otherwise a lock nut
wrench is required to loosen it. Insert one pin of the
wrench into a hole and turn Ezynut
counterclockwise.
Installing or removing flex wheel (optional
accessory)
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.
Fig.13
Follow instructions for depressed center wheel but also
use plastic pad over wheel. See order of assembly on
accessories page in this manual.
Installing or removing abrasive disc (optional
accessory)
NOTE:
•
Use sander accessories specified in this manual.
These must be purchased separately.
Fig.14
Mount the rubber pad onto the spindle. Fit the disc on the
rubber pad and screw the sanding lock nut onto the
spindle. To tighten the sanding 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.
Installing or removing dust cover attachment
(Optional accessory)
WARNING:
•
Always be sure that the tool is switched off and
unplugged before installing or removing the
dust cover attachment.
Failure to do so causes
damage to the tool or a personal injury.
There are four pieces of dust cover attachment and each
is used in one of different positions.
Fig.15
Set the dust cover attachment so that the marking (A, B,
C or D) places as shown. Snap its pins in the vents.
Dust cover attachment can be removed by hand.
NOTE:
•
Clean out the dust cover attachment when it is
clogged with dust or foreign matters. Continuing
operation with a clogged dust cover attachment will
damage the tool.
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
saw blades. 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.
•
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
Fig.16
ALWAYS hold the tool firmly with one hand on housing
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
ﾟ
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)
Fig.17
The direction for mounting the lock nut and the inner
flange varies by wheel thickness.
Refer to the table below.