Operation - Makita DGA454 Instruction Manual

For tool with clamp lever type wheel guard
Fig.8
Loosen the lever on the wheel guard after loosening the
screw. Mount the wheel guard with the protrusion on the
wheel guard band aligned with the notch on the bearing
box. Then rotate the wheel guard to such an angle that
it can protect the operator according to work.
Fig.9
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 screw to adjust the tightening of
the wheel guard band.
To remove wheel
procedure in reverse.
For tool with locking screw type wheel guard
Fig.10
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 ﾟ
counterclockwise. Be sure to tighten the screw securely.
To remove wheel
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.
Fig.11
Mount the inner flange onto the spindle. Fit the wheel/disc
on the inner flange and screw the lock nut onto the spindle.
Fig.12
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.
Installing or removing Ezynut (optional accessory)
CAUTION:
Do not use Ezynut with Super Flange or angle
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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.
Fig.13
Mount inner flange, abrasive wheel and Ezynut onto the
spindle so that Makita Logo on Ezynut faces outside.
Fig.14
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.
guard, follow the
guard, follow the
Fig.15
Fig.16
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.
Installing or removing flex wheel
(optional accessory)
WARNING:
Always use supplied guard when flex wheel is on
•
installation
tool. Wheel can shatter during use and guard
helps to reduce chances of personal injury.
Fig.17
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.
Installing or removing abrasive disc
installation
(optional accessory)
Fig.18
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.
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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
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especially when working corners, sharp edges etc.
This can cause loss of control and kickback.
NEVER use tool with wood cutting blades and
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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.
11
bouncing and snagging the wheel,