Makita GA5010 Instruction Manual page 9

Installing or removing wheel guard
(For depressed center wheel,
multi disc / abrasive cut-off wheel,
diamond wheel)
For tool with locking screw type
wheel guard
CAUTION:
• When using a depressed center grinding 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.
► Fig.8: 1. Wheel guard 2. Screw 3. Bearing box
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 coun-
terclockwise. Be sure to tighten the screw securely.
To remove wheel guard, follow the installation proce-
dure in reverse.
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.9: 1. Lock nut 2. Depressed center grinding
wheel/Multi-disc 3. Inner flange
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.10: 1. Lock nut wrench 2. Shaft lock
To remove the wheel, follow the installation procedure
in reverse.
OPERATION
WARNING:
• It should never be necessary to force the tool.
The weight of the tool applies adequate pres-
sure. 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, espe-
cially 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:
• 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.11
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.
9 ENGLISH