Makita GA4540R Manuel D'instructions page 8

Switch action
CAUTION:
• Before plugging in the tool, always check to see that
the slide switch actuates properly and returns to the
"OFF" position when the rear of the slide switch is
depressed.
• 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.
To start the tool, slide the slide switch toward the "I (ON)"
position by pushing the rear of the slide switch. For
continuous operation, press the front of the slide switch to
lock it. (Fig. 2)
To stop the tool, press the rear of the slide switch, then
slide it toward the "O (OFF)" position.
Indication lamp (Fig. 3)
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
The tool does not start with the switch being lock-on 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, return the slide
switch to "O (OFF)" position.
Soft start feature
Soft start feature suppresses starting shock.
Mechanical brake
For model GA4541R, GA5041R
Mechanical brake is activated after the tool is switched off.
The brake does not work when the power supply is shut
down with the switch still on.
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.
Screw the side grip securely on the position of the tool as
shown in the figure. (Fig. 4)
8
Installing or removing wheel guard (For
depressed center wheel, flap disc, flex
wheel, wire wheel brush/abrasive cut-off
wheel, diamond wheel)
WARNING:
• When using a depressed center wheel, flap 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 clamp lever type wheel guard (Fig. 5)
Loosen the screw, and then pull the lever in the direction
of the arrow. 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 to such an
angle that it can protect the operator according to work.
Pull the lever in direction of the arrow. Then tighten the
wheel guard with fastening the screw. Be sure to tighten
the screw securely. The setting angle of the wheel guard
can be adjusted with the lever. (Fig. 6)
To remove wheel guard, follow the installation procedure
in reverse.
For tool with locking screw type wheel guard (Fig. 7)
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 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.
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.
Mount the inner flange onto the spindle.
Make sure to fit the dented part of the inner flange onto
the straight part at the bottom of the spindle.
Fit the wheel/disc on the inner flange and screw the lock
nut onto the spindle. (Fig. 8)
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. 9)
To remove the wheel, follow the installation procedure in
reverse.
Super flange (Optional accessory)
CAUTION:
• Do not use Super flange for models equipped with the
mechanical brake. Otherwise it may loosen when the
brake is activated.