Maintenance; Optional Accessories - Makita GA5020 Instruction Manual

WARNING:
• When using an abrasive cut-off/diamond wheel, be
sure to use only the special wheel guard designed for
use with cut-off wheels.
• NEVER use cut-off wheel for side grinding.
• Do not "jam" the wheel or apply excessive pressure.
Do not attempt to make an excessive depth of cut.
Overstressing the wheel increases the loading and
susceptibility to twisting or binding of the wheel in the
cut and the possibility of kickback, wheel breakage and
overheating of the motor may occur.
• Do not start the cutting operation in the workpiece.
Let the wheel reach full speed and carefully enter into
the cut moving the tool forward over the workpiece
surface. The wheel may bind, walk up or kickback if the
power tool is started in the workpiece.
• During cutting operations, never change the angle of
the wheel. Placing side pressure on the cut-off wheel
(as in grinding) will cause the wheel to crack and break,
causing serious personal injury.
• A diamond wheel shall be operated perpendicular to
the material being cut.

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. (Fig. 16)
Replacing carbon brushes (Fig. 17)
Remove and check the carbon brushes regularly. Replace
when they wear down to the limit mark. Keep the carbon
brushes clean and free to slip in the holders. Both carbon
brushes should be replaced at the same time. Use only
identical carbon brushes.
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps. (Fig. 18)
After replacing brushes, plug in the tool and break in
brushes by running tool with no load for about 10 minutes.
Then check the tool while running and electric brake
operation when releasing the switch trigger. If electric
brake is not working well, ask your local Makita service
center for repair. (For models GA5020/GA6020)
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers, always
using Makita replacement parts.

OPTIONAL ACCESSORIES

CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
• Your tool is supplied with a guard for use with a
depressed center grinding wheel, multi-disc and wire
wheel brush. A cut-off wheel can also be used with an
optional guard. If you decide to use your Makita grinder
with approved accessories which you purchase from
your Makita distributor or service center, be sure to
obtain and use all necessary fasteners and guards as
recommended in this manual. Your failure to do so
could result in personal injury to you and others.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Wheel guard (Wheel cover) For depressed center
wheel/Multi disc
• Wheel guard (Wheel cover) For abrasive cut-off wheel/
diamond wheel
• Depressed center wheels
• Abrasive cut-off wheels
• Multi discs
• Diamond wheels
• Wire cup brushes
• Wire bevel brush 85
• Abrasive discs
• Inner flange
• Lock nut For depressed center wheel/abrasive cut-off
wheel/multi disc/diamond wheel
• Lock nut For abrasive disc
• Lock nut wrench
• Side grip
• Rubber pad
• Dust cover attachment
NOTE:
• Some items in the list may be included in the tool
package as standard accessories. They may differ
from country to country.
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