Makita 5" Sjsii High-power Angle Grinder Instruction Manual – Page 7
Posted on 11 Jun, 2019
Category: Angle Grinders
Product: Makita 5" Sjsii High-power Angle Grinder
Model Number: GA5042C
File size: 2 MB
Always be sure that the tool is switched off and
unplugged before adjusting or checking function on
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.
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 slid
e 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.
To stop the tool, press the rear of the slide switch, then
slide it toward the "O (OFF)" position.
Speed adjusting dial
The rotating speed can be changed by turning the speed
adjusting 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 number 1.
Refer to the below table for the relationship between the
number settings on the dial and the approximate rotating
For model GA4542C, GA4543C, GA5042C, GA5043C
For model GA6042C
If the tool is operated continuously at low speeds
for a long time, the motor will get overloaded and
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 tools equipped with electronic function are easy to
operate because of the following features.
Constant speed control
Constant speed control provides fine finish by keeping
the rotating speed constant under the loaded condition.
Soft start feature
Soft start feature suppresses starting shock.
When the load on the tool
exceeds admissible levels,
power to the motor is reduced to protect the motor from
1. Speed adjusting
1. Slide switch
1. Shaft lock