Makita GA5020 Instruction Manual page 9

For tool with the lock-on switch
To start the tool, simply pull the switch trigger (A).
Release the switch trigger to stop. For continuous oper-
ation, pull the switch trigger (A) and then push in the
lock lever (B). To stop the tool from the locked position,
pull the switch trigger (A) fully, 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 (B) and then pull the switch trigger (A). 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 (B) and then pull the switch trigger (A). Release
the switch trigger to stop. For continuous operation,
push in the lock lever (B), pull the switch trigger and
then push the lock lever further in (B). To stop the tool
from the locked position, pull the switch trigger (A) fully,
then release it.
Electronic function
Constant speed control (For models
GA5020C, GA5021C, GA6020C,
GA6021C)
• Possible to get fine finish, because the rotating
speed is kept constantly even under the loaded
condition.
• Additionally, when the load on the tool exceeds
admissible levels, power to the motor is reduced
to protect the motor from overheating. When the
load returns to admissible levels, the tool will
operate as normal.
Soft start feature
• Soft start because of suppressed starting shock.
Indication lamp
► Fig.4: 1. Indication lamp
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 indi-
cation 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.
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.5
Screw the side grip securely on the position of the tool
as shown in the figure.
Installing loop handle (Optional
accessory)
CAUTION:
• Always be sure that the loop handle is installed
securely before operation.
► Fig.6: 1. Protrusion of loop handle 2. Matching hole
in gear housing
Always install the loop handle on the tool before opera-
tion. Hold the tool's switch handle and the loop handle
firmly with both hands during operation.
Install the loop handle so that its protrusion will fit into
the matching hole in the gear housing.
Install the bolts and tighten them with the hex wrench.
The loop handle can be installed in two different direc-
tions as shown in the figures whichever is convenient
for your work.
► Fig.7: 1. Loop handle 2. Hex wrench 3. Bolt
► Fig.8: 1. Loop handle 2. Hex wrench 3. Bolt
Installing or removing wheel guard
(For depressed center wheel,
multi disc / abrasive cut-off wheel,
diamond wheel)
CAUTION:
• When using a depressed center grinding wheel/
Multi-disc, wire wheel brush or cut-off wheel,
the wheel guard must be fitted on the tool so
that the closed side of the guard always points
toward the operator.
For tool with locking screw type
wheel guard
► Fig.9: 1. Wheel guard 2. Screw 3. Bearing box
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 180 degrees coun-
terclockwise. Be sure to tighten the screw securely.
To remove wheel guard, follow the installation proce-
dure in reverse.
9 ENGLISH