Makita MGA400 Instruction Manual page 8

Grinding and sanding operation
001651
Hold the tool firmly. 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° to the
workpiece surface. During the break-in period with a new
wheel, do not work the tool in the B direction or it will cut
into the workpiece. Once the edge of the wheel has been
100 mm (4")
Abrasive cut-off wheel
Thickness: Less than 4 mm (5/32")
16 mm (5/8")
1. Lock nut
115 mm (4 - 1/2") / 125 mm (5")
Abrasive cut-off wheel
Thickness: Less than 4 mm (5/32")
22.23 mm (7/8")
1. Lock nut
010848
15°
Thickness: 4 mm (5/32") or more
1
2
16 mm (5/8")
3
2. Abrasive cut-off wheel
Thickness: 4 mm (5/32") or more
1
2
22.23 mm (7/8")
3
2. Abrasive cut-off wheel
rounded off by use, the wheel may be worked in both A
and B directions.
Operation with abrasive cut-off / diamond
wheel (optional accessory)
1
2
3
010855
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")
20 mm (13/16")
3. Inner flange 4. Diamond wheel
Diamond wheel
Thickness: Less than 4 mm (5/32")
22.23 mm (7/8")
3. Inner flange 4. Diamond wheel
8
1. Lock nut
2. Abrasive cut-off
wheel/diamond
wheel
3. Inner flange
4
4. Wheel guard for
abrasive cut-off
wheel/diamond
wheel
Thickness: 4 mm (5/32") or more
1
4
20 mm (13/16")
3
Thickness: 4 mm (5/32") or more
1
4
22.23 mm (7/8")
3