Maintenance; Sanding Operation; Replacing Carbon Brushes - Makita GA7911 Instruction Manual

► 1. Lock nut 2. Abrasive disc 3. Rubber pad
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.
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► 1. Lock nut wrench 2. Shaft lock
To remove the disc, follow the installation procedure in
reverse.
OPERATION
CAUTION:
• After operation, always switch off the tool and
wait until the wheel has come to a complete stop
before putting the tool down.

Sanding operation

A
1
2
3
1
15°
B
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.

MAINTENANCE

CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspec-
tion or maintenance.
NOTICE:
Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
Air vent cleaning
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
► 1. Exhaust vent 2. Inhalation vent

Replacing carbon brushes

► 1. Limit mark
6 ENGLISH
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1