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GA7040SF01
Инструкция по эксплуатации Страница: 7

Makita GA7040SF01 [7/48] Maintenance

figure. Tighten the lever to fasten the wheel guard. If the

lever is too tight or too loose to fasten the wheel guard,

loosen or tighten the nut to adjust the tightening of the

wheel guard band.

To remove wheel guard, follow the installation procedure

in reverse.

Installing or removing depressed center

grinding wheel/Multi-disc (accessory)

Fig.8

Mount the inner flange onto the spindle. Fit the

wheel/disc on the inner flange and screw the lock nut

onto the spindle.

Super flange

Models GA7030F, GA7030SF, GA7040F, GA7040SF,

GA9030F, 9030SF, GA9040F and GA9040SF are

standard-equipped with a super flange. Only 1/3 of

efforts needed to undo lock nut, compared with

conventional type.

For Australia and New Zealand

Fig.9

Mount the inner flange onto the spindle. Fit the

wheel/disc on the inner flange and screw the lock nut

with its protrusion facing downward (facing toward the

wheel).

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.

Fig.10

To remove the wheel, follow the installation procedure in

reverse.

Installing or removing cut-off wheel

For Australia and New Zealand

Fig.11

Mount the inner flange onto the spindle. Fit the cut-off

wheel on over the inner flange.

Mount the outer flange on the wheel and screw the lock

nut with its protrusion facing downward (facing toward

the wheel).

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.

To remove the wheel, follow the installation procedure in

reverse.

OPERATION

WARNING:

• It should never be necessary to force the tool. The

weight of the tool applies adequate pressure.

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, especially

when working corners, sharp edges etc. This can

cause loss of control and kickback.

• NEVER use tool with wood cutting blades and

other sawblades. Such blades when used on a

grinder frequently kick and cause loss of control

leading to personal injury.

CAUTION:

• Never switch on the tool when it is in contact with

the workpiece, it may cause an injury to operator.

• Always wear safety goggles or a face shield during

operation.

• 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 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.

Fig.12

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged before attempting to perform inspection

or maintenance.

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.13

Replacing carbon brushes

Fig.14

When the resin insulating tip inside the carbon brush is

exposed to contact the commutator, it will automatically

shut off the motor. When this occurs, both carbon

brushes should be replaced. 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.15

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.

Makita GA7040SF01 [7/48] Maintenance

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