Makita GA7021, GA7020, GA9020 Maintenance, Operation with wire cup brush optional accessory

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.

	15
A	B
006741

Operation with wire cup brush (optional accessory)

	1. Wire cup brush
1	2. Urethane
	washer
2

006742

CAUTION:

•Check operation of brush by running tool with no load, insuring that no one is in front of or in line with brush.

•Do not use brush that is damaged, or which is out of balance. Use of damaged brush could increase

potential for injury from contact with broken brush wires.

Unplug tool and place it upside down allowing easy access to spindle. Remove any accessories on spindle. Mount urethane washer then thread wire cup brush onto spindle and tighten with supplied wrench. When using brush, avoid applying too much pressure which causes over bending of wires, leading to premature breakage.

NOTE:

•When using wire cup brush, mount urethane washer to the spindle. It will make it easier to remove wire cup brush.

Operation with wire wheel brush (optional accessory)

	1. Wire wheel
1	brush

006743

CAUTION:

•Check operation of wire wheel brush by running tool with no load, insuring that no one is in front of or in line with the wire wheel brush.

•Do not use wire wheel brush that is damaged, or which is out of balance. Use of damaged wire wheel brush could increase potential for injury from contact with broken wires.

•ALWAYS use guard with wire wheel brushes, assuring diameter of wheel fits inside guard. Wheel can shatter during use and guard helps to reduce chances of personal injury.

Unplug tool and place it upside down allowing easy access to spindle. Remove any accessories on spindle. Thread wire wheel brush onto spindle and tighten with the wrenches.

When using wire wheel brush, avoid applying too much pressure which causes over bending of wires, leading to premature breakage.

MAINTENANCE

CAUTION:

•Always be sure that the tool is switched off and unplugged before attempting to perform inspection or maintenance.

•Never use gasoline, benzine, thinner, alcohol or the like. Discoloration, deformation or cracks may

result.

The tool and its air vents have to be kept clean. Regularly clean the tool's air vents or whenever the vents start to become obstructed.

	1. Exhaust vent
1	2. Inhalation vent
	2

006744

7