Operation - Makita GA5020 Instruction Manual

Installing loop handle (Optional accessory)
CAUTION:
Always be sure that the loop handle is installed
•
securely before operation.
Fig.6
Always install the loop handle on the tool before
operation. Hold the tool's switch handle and the loop
handle firmly with both hands during operation.
Install the loop handle so that its protrusion will fit into
the matching hole in the gear housing.
Install the bolts and tighten them with the hex wrench.
The loop handle can be installed in two different
directions as shown in the figures whichever is
convenient for your work.
Fig.7
Fig.8
Installing or removing wheel guard (For
depressed center wheel, multi disc / abrasive
cut-off wheel, diamond wheel)
CAUTION:
When using a
•
wheel/Multi-disc, wire wheel brush or cut-off wheel,
the wheel guard must be fitted on the tool so that
the closed side of the guard always points toward
the operator.
For tool with locking screw type wheel guard
Fig.9
Mount the wheel guard with the protrusion on the wheel
guard band aligned with the notch on the bearing box.
Then rotate the wheel guard around 180 degrees
counterclockwise. Be sure to tighten the screw securely.
To remove wheel
procedure in reverse.
For tool with clamp lever type wheel guard
Fig.10
Fig.11
Loosen the lever on the wheel guard after loosening the
screw. Mount the wheel guard with the protrusion on the
wheel guard band aligned with the notch on the bearing
box. Then rotate the wheel guard around to the position
shown in the figure. Tighten the lever to fasten the
wheel guard. If the lever is too tight or too loose to
fasten the wheel guard, loosen or tighten the screw to
adjust the tightening of the wheel guard band.
To remove wheel
procedure in reverse.
depressed center
guard, follow the
guard, follow the
Installing or removing depressed center
grinding wheel/Multi-disc (optional
accessory)
WARNING:
Always use supplied guard when depressed
•
center grinding wheel/Multi-disc is on tool. Wheel
can shatter during use and guard helps to reduce
chances of personal injury.
Fig.12
Mount the inner flange onto the spindle. Fit the
wheel/disc on the inner flange 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.
Fig.13
To remove the wheel, follow the installation procedure in
reverse.

OPERATION

WARNING:
grinding
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
•
especially when working corners, sharp edges etc.
This can cause loss of control and kickback.
installation
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:
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.14
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.
installation
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.
10
bouncing and snagging the wheel,