Makita GA4552 Manuel D'instruction page 9

Installing or removing abrasive disc
Optional accessory
► 1. Sanding lock nut 2. Abrasive disc 3. Rubber pad
1. Mount the rubber pad onto the spindle.
2. Fit the disc on the rubber pad and screw the sand-
ing lock nut onto the spindle.
3. Hold the spindle with the shaft lock, and securely
tighten the sanding lock nut clockwise with the lock nut
wrench.
To remove the disc, follow the installation procedure in
reverse.
NOTE: Use sander accessories specified in this man-
ual. These must be purchased separately.
OPERATION
WARNING:
It should never be necessary to
force the tool. The weight of the tool applies ade-
quate pressure. Forcing and excessive pressure
could cause dangerous wheel breakage.
WARNING:
ALWAYS replace wheel if tool is
dropped while grinding.
WARNING:
NEVER bang or hit grinding disc
or wheel onto work.
WARNING:
Avoid bouncing and snagging
the wheel, especially when working corners,
sharp edges etc. This can cause loss of control and
kickback.
WARNING:
NEVER use tool with wood cutting
blades and other saw blades. Such blades when
used on a grinder frequently kick and cause loss of
control leading to personal injury.
WARNING:
Continued use of a worn-out
wheel may result in wheel explosion and serious
personal injury.
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2
3
CAUTION:
Never switch on the tool when it is in con-
tact with the workpiece, it may cause an injury to operator.
CAUTION:
Always wear safety goggles or a
face shield during 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.
CAUTION:
ALWAYS hold the tool firmly with one
hand on housing and the other on the side grip (handle).
Operation with wheel/disc
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° to the workpiece surface.
During the break-in period with a new wheel, do not work the
grinder in forward direction or it may cut into the workpiece.
Once the edge of the wheel has been rounded off by use, the
wheel may be worked in both forward and backward direction.
Operation with abrasive cut-off /
diamond wheel
Optional accessory
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.
WARNING:
NEVER use cut-off wheel for side grinding.
WARNING:
Do not "jam" the wheel or apply
excessive pressure. Do not attempt to make an exces-
sive 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.
WARNING:
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.
WARNING:
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.
WARNING:
A diamond wheel shall be oper-
ated perpendicular to the material being cut.
9 ENGLISH
15°