Functional Description; Shaft Lock; Indication Lamp; Fig.1 - Makita GA4541R Instruction Manual

Safety Warnings Specific for Wire Brushing
Operations:
a) Be aware that wire bristles are thrown by
the brush even during ordinary operation. Do
not overstress the wires by applying excessive
load to the brush. The wire bristles can easily
penetrate light clothing and/or skin.
b) If the use of a guard is recommended for
wire brushing, do not allow interference of the
wire wheel or brush with the guard. Wire wheel
or brush may expand in diameter due to work load
and centrifugal forces.
Additional safety warnings:
17. When using depressed centre grinding wheels,
be sure to use only fiberglass-reinforced
wheels.
18. NEVER USE Stone Cup type wheels with this
grinder. This grinder is not designed for these
types of wheels and the use of such a product
may result in serious personal injury.
19. Be careful not to damage the spindle, the
flange (especially the installing surface) or the
lock nut. Damage to these parts could result in
wheel breakage.
20. Make sure the wheel is not contacting the
workpiece before the switch is turned on.
21. Before using the tool on an actual workpiece,
let it run for a while. Watch for vibration or
wobbling that could indicate poor installation
or a poorly balanced wheel.
22. Use the specified surface of the wheel to per-
form the grinding.
23. Do not leave the tool running. Operate the tool
only when hand-held.
24. Do not touch the workpiece immediately after
operation; it may be extremely hot and could
burn your skin.
25. Observe the instructions of the manufacturer
for correct mounting and use of wheels.
Handle and store wheels with care.
26. Do not use separate reducing bushings or
adaptors to adapt large hole abrasive wheels.
27. Use only flanges specified for this tool.
28. For tools intended to be fitted with threaded
hole wheel, ensure that the thread in the wheel
is long enough to accept the spindle length.
29. Check that the workpiece is properly
supported.
30. Pay attention that the wheel continues to
rotate after the tool is switched off.
31. If working place is extremely hot and humid,
or badly polluted by conductive dust, use a
short-circuit breaker (30 mA) to assure opera-
tor safety.
32. Do not use the tool on any materials contain-
ing asbestos.
33. When use cut-off wheel, always work with
the dust collecting wheel guard required by
domestic regulation.
34. Cutting discs must not be subjected to any
lateral pressure.
SAVE THESE INSTRUCTIONS.
WARNING: DO NOT let comfort or famil-
iarity with product (gained from repeated
use) replace strict adherence to safety
rules for the subject product. MISUSE or
failure to follow the safety rules stated in
this instruction manual may cause serious
personal injury.
FUNCTIONAL
DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function
on the tool.

Shaft lock

CAUTION:
• Never actuate the shaft lock when the spindle is
moving. The tool may be damaged.
► Fig.1: 1. Shaft lock
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 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.
► Fig.2: 1. Slide switch
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.
To stop the tool, press the rear of the slide switch, then
slide it toward the "O (OFF)" position.

Indication lamp

► Fig.3: 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.
8 ENGLISH