Makita DGA504RTJ - Инструкция по эксплуатации - Страница 12

12

For tool with locking screw type wheel guard (Fig. 9)

Mount the wheel guard with the protrusions on the wheel 
guard band aligned with the notches on the bearing box. 
Then rotate the wheel guard around 180° 
counterclockwise. Be sure to tighten the screw securely.
To remove wheel guard, follow the installation procedure 
in reverse.

Installing or removing depressed center 
wheel or flap disc (optional accessory)

 WARNING:

• When using a depressed center wheel or flap disc, the 

wheel guard must be fitted on the tool so that the 
closed side of the guard always points toward the 
operator.

• Only actuate the shaft lock when the spindle is not 

moving.

Mount the inner flange onto the spindle. Fit the wheel/disc 
on the inner flange and screw the lock nut onto the 
spindle.

 (Fig. 10)

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. 11)

To remove the wheel, follow the installation procedure in 
reverse.

Installing or removing Ezynut (optional 
accessory)

 CAUTION:

• Do not use Ezynut with Super Flange or angle grinder 

with “F” on the end of the model No. Those flanges are 
so thick that the entire thread cannot be retained by the 
spindle.

Mount inner flange, abrasive wheel and Ezynut onto the 
spindle so that Makita Logo on Ezynut faces outside. 

(Fig. 12)

Press shaft lock firmly and tighten Ezynut by turning the 
abrasive wheel clockwise as far as it turns.
Turn the outside ring of Ezynut counterclockwise to 
loosen.

 (Fig. 13)

NOTE:

• Ezynut can be loosened by hand as long as the arrow 

points the notch. Otherwise a lock nut wrench is 
required to loosen it. Insert one pin of the wrench into a 
hole and turn Ezynut counterclockwise.

 (Fig. 14 & 15)

Installing or removing flex wheel (optional 
accessory)

 WARNING:

• Always use supplied guard when flex wheel is on tool. 

Wheel can shatter during use and guard helps to 
reduce chances of personal injury.

Follow instructions for depressed center grinding wheel/
Multi-disc but also use plastic pad over wheel. See order 
of assembly on accessories page in this manual.

 (Fig. 16)

Installing or removing abrasive disc 
(optional accessory) (Fig. 17)

Mount the rubber pad onto the spindle. Fit the disc on the 
rubber pad and screw the lock nut onto the spindle. 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 disc, follow the installation procedure in 
reverse.

NOTE:

• Use sander accessories specified in this manual. 

These must be purchased separately.

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 (Fig. 18)

ALWAYS hold the tool firmly with one hand on housing 
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.

Operation with abrasive cut-off/diamond 
wheel (optional accessory) (Fig. 19)

Remove the battery cartridge from the tool and place it 
upside down allowing easy access to spindle. Mount the 
inner flange and abrasive cut-off/diamond wheel onto the 
spindle. Tighten the lock nut securely with supplied 
wrench. The direction for mounting the lock nut and the 
inner flange varies by wheel thickness.
Refer to the table below.

 (Fig. 20)

 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. (In some European countries, 
when using a diamond wheel, the ordinary guard can 
be used. Follow the regulations in your country.)