8
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 action
CAUTION:
• Before plugging in the tool, always check to see that
the switch trigger actuates properly and returns to the
“OFF” position when released.
• Switch can be locked in “ON” position for ease of
operator comfort during extended use. Apply caution
when locking tool in “ON” position and maintain firm
grasp on tool. (Fig. 2)
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-off switch
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 tool with the lock on and lock-off switch
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 push the lock lever (in the A direction) further in.
To stop the tool from the locked position, pull the switch
trigger fully (in the B direction), then release it.
NOTE:
Models GA7020S, GA9020S, GA7020SF and GA9020SF
begin to run slowly when they are turned on. This soft
start feature assures smoother operation and less
operator fatigue.
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) (Fig. 3)
CAUTION:
• Always be sure that the side grip is installed securely
before operation.
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 some European countries,
when using a diamond wheel, the ordinary guard can
be used. Follow the regulations in your country.)
For tool with locking screw type wheel guard (Fig. 4)
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. 5 & 6)
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 by spanner 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. 7)
Mount the inner flange onto the spindle. Fit the wheel/disc
on the inner flange 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. (Fig. 8)
To remove the wheel, follow the installation procedure in
reverse.
Super flange
Models GA7020F, GA7020SF, GA9020F and GA9020SF
are standard-equipped with a super flange. Only 1/3 of
efforts needed to undo lock nut, compared with
conventional type.
NOTE:
• Only for tools with M14 spindle thread
Installing or removing abrasive disc
(optional accessory)
NOTE:
• Use sander accessories specified in this manual.
These must be purchased separately. (Fig. 9)
