Shaft Lock; Electronic Function - Makita GA4590 Instruction Manual

Speed adjusting dial
Only for model GA4590 / GA4591 / GA5090 / GA5091
CAUTION:
If the tool is operated continuously
at low speeds for a long time, the motor will get
overloaded and heated up.
CAUTION:
The speed adjusting dial can be turned
only as far as 5 and back to 1. Do not force it past 5 or
1, or the speed adjusting function may no longer work.
The rotating speed can be changed by turning the speed adjust-
ing dial to a given number setting from 1 to 5. Higher speed is
obtained when the dial is turned in the direction of number 5. And
lower speed is obtained when it is turned in the direction of num-
ber 1. Refer to the below table for the relationship between the
number settings on the dial and the approximate rotating speed.
Number
1
2
3
4
5
1
Fig.2
► 1. Speed adjusting dial

Shaft lock

WARNING:
Never actuate the shaft lock when the
spindle is moving. It may cause serious injury or the tool damage.
Press the shaft lock to prevent spindle rotation when
installing or removing accessories.
1
Fig.3
► 1. Shaft lock
Rated speed
-1
2,800 min (/min)
-1
4,500 min (/min)
-1
6,500 min (/min)
-1
8,000 min (/min)
-1
11,500 min (/min)
Switch action
CAUTION:
Before plugging in the tool, always
check to see that the slide switch actuates prop-
erly and returns to the "OFF" position when the
rear end of the slide switch is depressed.
CAUTION:
Switch can be locked in the "ON"
position for ease of operator comfort during
extended use. Apply caution when locking tool in
the "ON" position and maintain firm grasp on tool.
To start the tool, press down the rear end of the slide
switch and then slide it toward the "I (ON)" position.
For continuous operation, press down the front end of
the slide switch to lock it.
Fig.4
► 1. Slide switch
To stop the tool, press down the rear end of the slide
switch so that it returns to the "O (OFF)" position.
Fig.5
► 1. Slide switch

Electronic function

Active Feedback sensing Technology
CAUTION:
Hold the tool firmly until the rotation stops.
The tool electronically detects situations where the wheel
or accessory may be at risk to be bound. In such situation,
the tool automatically shuts off the power to prevent further
rotation of the spindle (this does not prevent kickback).
At this time, the indication lamp blinks in red and shows
the Active Feedback sensing Technology is working.
To restart the tool, switch off the tool first, remove the cause of
sudden drop in the rotation speed, and then turn the tool on.
9 ENGLISH
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1