Makita GA4030 Instruction Manual page 9

To remove the wheel, follow the installation procedure
in reverse.
WARNING:
Only actuate the shaft lock when the
spindle is not moving.
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 saw blades. Such blades when used on a
grinder frequently kick and cause loss of control
leading to personal injury.
100 mm (4")
Abrasive cut-off wheel
Thickness: Less than 4 mm (5/32")
1
2
16 mm (5/8")
3
1. Lock nut 2. Abrasive cut-off wheel
115 mm (4 - 1/2") / 125 mm (5")
Abrasive cut-off wheel
Thickness: Less than 4 mm (5/32")
1
2
22.23 mm (7/8")
3
1. Lock nut 2. Abrasive cut-off wheel
Thickness: 4 mm (5/32") or more
16 mm (5/8")
3.
Thickness: 4 mm (5/32") or more
22.23 mm (7/8")
3.
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
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 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.
► Fig.9
Operation with abrasive cut-off /
diamond wheel (optional accessory)
► Fig.10: 1. Lock nut 2. Abrasive cut-off wheel/dia-
mond wheel 3. Inner flange 4. Wheel guard
for abrasive cut-off wheel/diamond wheel
The direction for mounting the lock nut and the inner
flange varies by wheel thickness.
Refer to the table below.
Diamond wheel
Thickness: Less than 4 mm (5/32")
1
4
20 mm (13/16")
3
Inner flange 4. Diamond wheel
Diamond wheel
Thickness: Less than 4 mm (5/32")
1
4
22.23 mm (7/8")
3
Inner flange 4. Diamond wheel
9 ENGLISH
Thickness: 4 mm (5/32") or more
20 mm (13/16")
Thickness: 4 mm (5/32") or more
22.23 mm (7/8")