9
Shaft lock (Fig. 1)
CAUTION:
• Never actuate the shaft lock when the spindle is
moving. The tool may be damaged.
Press the shaft lock to prevent spindle rotation when
installing or removing accessories.
Switch handle mounting positions
(For Models GA7030R, GA7040R, GA9030R and
GA9040R) (Fig. 2)
The switch handle can be rotated to either 90° left or right
to fit your work needs. First, unplug the tool. Press the
lock button and rotate the switch handle to left or right
fully. The switch handle will be locked in that position.
CAUTION:
• Always make sure that the switch handle is locked in
the desired position before operation.
Switch action (Fig. 3)
CAUTION:
• Before plugging in the tool, always check to see that
the switch trigger actuates properly and returns to the
“OFF” position when released.
For tool with the lock-on switch
To start the tool, simply pull the switch trigger (in the B
direction). Release the switch trigger to stop. For
continuous operation, pull the switch trigger (in the B
direction) and then push in the lock lever (in the A
direction). To stop the tool from the locked position, pull
the switch trigger fully (in the B direction), then release it.
For tool with the lock on and lock-off switch (Fig. 4)
To prevent the switch trigger from accidentally pulled, a
lock lever is provided.
To start the tool, push in the lock lever (in the A direction)
and then pull the switch trigger (in the B direction).
Release the switch trigger to stop.
For continuous operation, push in the lock lever (in the A
direction), pull the switch trigger (in the B direction) and
then pull the lock lever (in the C direction).
To stop the tool from the locked position, pull the switch
trigger fully (in the B direction), then release it.
Indication lamp (Fig. 5)
The indication lamp lights up green when the tool is
plugged. If the indication lamp does not light up, the mains
cord or the controller may be defective. The indication
lamp is lit but the tool does not start even if the tool is
switched on, the carbon brushes may be worn out, or the
controller, the motor or the ON/OFF switch may be
defective.
Unintentional restart proof
Even locking lever keeping the switch trigger depressed
(Lock-on position) does not allow the tool to restart even
when the tool is plugged.
At this time, the indication lamp flickers red and shows the
unintentional restart proof device is on function.
To cancel the unintentional restart proof, pull the switch
trigger fully, then release it.
Soft start feature
These models begin to run slowly when they are turned
on. This soft start feature assures smoother operation.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Installing side grip (handle)
CAUTION:
• Always be sure that the side grip is installed securely
before operation.
(Fig. 6)
Screw the side grip securely on the position of the tool as
shown in the figure.
Installing or removing wheel guard (For
depressed center wheel, multi disc, wire
wheel brush/abrasive cut-off wheel,
diamond wheel)
WARNING:
• When using a depressed center grinding wheel/Multi-
disc, flex wheel or wire wheel brush, the wheel guard
must be fitted on the tool so that the closed side of the
guard always points toward the operator.
• 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 European countries, when
using a diamond wheel, the ordinary guard can be
used.)
For tool with locking screw type wheel guard (Fig. 7)
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. Be sure to tighten
the screw securely.
To remove wheel guard, follow the installation procedure
in reverse.
For tool with clamp lever type wheel guard (Fig. 8 & 9)
Loosen the lever on the wheel guard. 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 around to the position shown in the 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)
WARNING:
• Always use supplied guard when depressed center
grinding wheel/Multi-disc is on tool. Wheel can shatter
during use and guard helps to reduce chances of
personal injury.
(Fig. 10)
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 with the letter F are standard-equipped with a
super flange. Only 1/3 of efforts needed to undo lock nut,
compared with conventional type.
