Makita DGA456Z User manual

DGA406
DGA456
DGA506
EN Cordless Angle Grinder INSTRUCTION MANUAL 6
FR Meuleuse d’Angle sans Fil MANUEL D’INSTRUCTIONS 16
DE Akku-Winkelschleifer BETRIEBSANLEITUNG 27
IT Smerigliatrice angolare a
batteria ISTRUZIONI PER L’USO 38
NL Haakse accuslijpmachine GEBRUIKSAANWIJZING 49
ES Esmeriladora Angular
Inalámbrica
MANUAL DE
INSTRUCCIONES 60
PT Esmerilhadeira Angular a
Bateria MANUAL DE INSTRUÇÕES 71
DA Ledningsfri vinkelsliber BRUGSANVISNING 82
EL Φορητός γωνιακός
λειαντήρας ΕΓΧΕΙΡΙΔΙΟ ΟΔΗΓΙΩΝ 92
TR Akülü Avuç Taşlama Makinesi KULLANMA KILAVUZU 104

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16 mm (5/8″) 16 mm (5/8″)
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6ENGLISH
ENGLISH (Original instructions)
SPECIFICATIONS
Model: DGA406 DGA456 DGA506
Wheel diameter 100mm (4″) 115mm (4-1/2″) 125mm (5″)
Max. wheel thickness 6.4mm
Spindle thread M10 M14 or 5/8″ (country specic)
Rated speed (n) 8,500min-1
Overall length With battery cartridge
BL1815N, BL1820, BL1820B
348mm
With battery cartridge BL1830,
BL1830B, BL1840, BL1840B,
BL1850, BL1850B, BL1860B
362mm
Net weight With battery cartridge
BL1815N, BL1820, BL1820B
2.2kg 2.3kg
With battery cartridge BL1830,
BL1830B, BL1840, BL1840B,
BL1850, BL1850B, BL1860B
2.5kg 2.6kg
Rated voltage D.C.18 V
• Due to our continuing program of research and development, the specications herein are subject to change
without notice.
• Specications and battery cartridge may differ from country to country.
• Weight, with battery cartridge, according to EPTA-Procedure 01/2003
Intended use
The tool is intended for grinding, sanding and cutting of
metal and stone materials without the use of water.
Noise
The typical A-weighted noise level determined accord-
ing to EN60745:
Model DGA456
Sound pressure level (LpA) : 79 dB(A)
Uncertainty (K) : 3 dB(A)
Model DGA506
Sound pressure level (LpA) : 79 dB(A)
Uncertainty (K) : 3dB(A)
The noise level under working may exceed 80 dB (A).
WARNING: Wear ear protection.
Vibration
The vibration total value (tri-axial vector sum) deter-
mined according to EN60745:
Model DGA456
Work mode: surface grinding with normal side grip
Vibration emission (ah, AG) : 6.5 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: surface grinding with anti vibration side grip
Vibration emission (ah, AG) : 6.0 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: disc sanding with normal side grip
Vibration emission (ah, DS) : 2.5 m/s2or less
Uncertainty (K) : 1.5 m/s2
Work mode: disc sanding with anti vibration side grip
Vibration emission (ah, DS) : 2.5 m/s2or less
Uncertainty (K) : 1.5 m/s2
Model DGA506
Work mode: surface grinding with normal side grip
Vibration emission (ah, AG) : 6.5 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: surface grinding with anti vibration side grip
Vibration emission (ah, AG) : 6.0 m/s2
Uncertainty (K) : 1.5 m/s2
Work mode: disc sanding with normal side grip
Vibration emission (ah, DS) : 2.5 m/s2or less
Uncertainty (K) : 1.5 m/s2
Work mode: disc sanding with anti vibration side grip
Vibration emission (ah, DS) : 2.5 m/s2or less
Uncertainty (K) : 1.5 m/s2
NOTE: The declared vibration emission value has
been measured in accordance with the standard test
method and may be used for comparing one tool with
another.
NOTE: The declared vibration emission value
may also be used in a preliminary assessment of
exposure.

7ENGLISH
WARNING: The vibration emission during actual
use of the power tool can differ from the declared
emission value depending on the ways in which the
tool is used.
WARNING: Be sure to identify safety measures
to protect the operator that are based on an estima-
tion of exposure in the actual conditions of use (taking
account of all parts of the operating cycle such as
the times when the tool is switched off and when it is
running idle in addition to the trigger time).
WARNING: The declared vibration emission
value is used for main applications of the power tool.
However if the power tool is used for other applica-
tions, the vibration emission value may be different.
EC Declaration of Conformity
For European countries only
Makita declares that the following Machine(s):
Designation of Machine: Cordless Angle Grinder
Model No./ Type: DGA456, DGA506
Conforms to the following European Directives:
2006/42/EC
They are manufactured in accordance with the following
standard or standardized documents: EN60745
The technical le in accordance with 2006/42/EC is
available from:
Makita, Jan-Baptist Vinkstraat 2, 3070, Belgium
11.8.2015
Yasushi Fukaya
Director
Makita, Jan-Baptist Vinkstraat 2, 3070, Belgium
General power tool safety warnings
WARNING: Read all safety warnings and
all instructions. Failure to follow the warnings and
instructions may result in electric shock, re and/or
serious injury.
Save all warnings and instruc-
tions for future reference.
The term "power tool" in the warnings refers to your
mains-operated (corded) power tool or battery-operated
(cordless) power tool.
Cordless grinder safety warnings
Safety Warnings Common for Grinding, Sanding,
Wire Brushing, or Abrasive Cutting-Off Operations:
1.
This power tool is intended to function as a grinder,
sander, wire brush or cut-off tool. Read all safety
warnings, instructions, illustrations and specica-
tions provided with this power tool. Failure to follow
all instructions listed below may result in electric shock,
re and/or serious injury.
2. Operations such as polishing are not recommended
to be performed with this power tool. Operations for
which the power tool was not designed may create a
hazard and cause personal injury.
3. Do not use accessories which are not speci-
cally designed and recommended by the tool
manufacturer. Just because the accessory can
be attached to your power tool, it does not assure
safe operation.
4. The rated speed of the accessory must be at
least equal to the maximum speed marked on
the power tool. Accessories running faster than
their rated speed can break and y apart.
5. The outside diameter and the thickness of your
accessory must be within the capacity rating
of your power tool. Incorrectly sized accessories
cannot be adequately guarded or controlled.
6. Threaded mounting of accessories must
match the grinder spindle thread. For acces-
sories mounted by anges, the arbour hole of
the accessory must t the locating diameter
of the ange. Accessories that do not match the
mounting hardware of the power tool will run out of
balance, vibrate excessively and may cause loss
of control.
7. Do not use a damaged accessory. Before each
use inspect the accessory such as abrasive
wheels for chips and cracks, backing pad for
cracks, tear or excess wear, wire brush for
loose or cracked wires. If power tool or acces-
sory is dropped, inspect for damage or install
an undamaged accessory. After inspecting and
installing an accessory, position yourself and
bystanders away from the plane of the rotating
accessory and run the power tool at maximum
no-load speed for one minute. Damaged acces-
sories will normally break apart during this test
time.
8. Wear personal protective equipment.
Depending on application, use face shield,
safety goggles or safety glasses. As appro-
priate, wear dust mask, hearing protectors,
gloves and workshop apron capable of stop-
ping small abrasive or workpiece fragments.
The eye protection must be capable of stopping
ying debris generated by various operations.
The dust mask or respirator must be capable of
ltrating particles generated by your operation.
Prolonged exposure to high intensity noise may
cause hearing loss.
9. Keep bystanders a safe distance away from
work area. Anyone entering the work area
must wear personal protective equipment.
Fragments of workpiece or of a broken accessory
may y away and cause injury beyond immediate
area of operation.
10. Hold the power tool by insulated gripping
surfaces only, when performing an operation
where the cutting tool may contact hidden
wiring. Contact with a "live" wire will also make
exposed metal parts of the power tool "live" and
could give the operator an electric shock.
11. Never lay the power tool down until the acces-
sory has come to a complete stop. The spinning
accessory may grab the surface and pull the
power tool out of your control.
12. Do not run the power tool while carrying it at
your side. Accidental contact with the spinning
accessory could snag your clothing, pulling the
accessory into your body.

8ENGLISH
13. Regularly clean the power tool’s air vents. The
motor’s fan will draw the dust inside the housing
and excessive accumulation of powdered metal
may cause electrical hazards.
14. Do not operate the power tool near ammable
materials. Sparks could ignite these materials.
15. Do not use accessories that require liquid
coolants. Using water or other liquid coolants
may result in electrocution or shock.
Kickback and Related Warnings
Kickback is a sudden reaction to a pinched or snagged
rotating wheel, backing pad, brush or any other acces-
sory. Pinching or snagging causes rapid stalling of the
rotating accessory which in turn causes the uncon-
trolled power tool to be forced in the direction opposite
of the accessory’s rotation at the point of the binding.
For example, if an abrasive wheel is snagged or pinched by
the workpiece, the edge of the wheel that is entering into the
pinch point can dig into the surface of the material causing
the wheel to climb out or kick out. The wheel may either jump
toward or away from the operator, depending on direction
of the wheel’s movement at the point of pinching. Abrasive
wheels may also break under these conditions.
Kickback is the result of power tool misuse and/or
incorrect operating procedures or conditions and can be
avoided by taking proper precautions as given below.
1. Maintain a rm grip on the power tool and
position your body and arm to allow you to
resist kickback forces. Always use auxiliary
handle, if provided, for maximum control over
kickback or torque reaction during start-up.
The operator can control torque reactions or kick-
back forces, if proper precautions are taken.
2. Never place your hand near the rotating acces-
sory. Accessory may kickback over your hand.
3. Do not position your body in the area where
power tool will move if kickback occurs.
Kickback will propel the tool in direction opposite
to the wheel’s movement at the point of snagging.
4. Use special care when working corners, sharp
edges etc. Avoid bouncing and snagging the
accessory. Corners, sharp edges or bouncing
have a tendency to snag the rotating accessory
and cause loss of control or kickback.
5. Do not attach a saw chain woodcarving blade
or toothed saw blade. Such blades create fre-
quent kickback and loss of control.
Safety Warnings Specic for Grinding and Abrasive
Cutting-Off Operations:
1. Use only wheel types that are recommended
for your power tool and the specic guard
designed for the selected wheel. Wheels for
which the power tool was not designed cannot be
adequately guarded and are unsafe.
2. The grinding surface of centre depressed
wheels must be mounted below the plane of
the guard lip. An improperly mounted wheel that
projects through the plane of the guard lip cannot
be adequately protected.
3.
The guard must be securely attached to the power
tool and positioned for maximum safety, so the least
amount of wheel is exposed towards the operator.
The guard helps to protect the operator from broken
wheel fragments, accidental contact with wheel and
sparks that could ignite clothing.
4. Wheels must be used only for recommended
applications. For example: do not grind with
the side of cut-off wheel. Abrasive cut-off wheels
are intended for peripheral grinding, side forces
applied to these wheels may cause them to
shatter.
5. Always use undamaged wheel anges that are
of correct size and shape for your selected
wheel. Proper wheel anges support the wheel
thus reducing the possibility of wheel breakage.
Flanges for cut-off wheels may be different from
grinding wheel anges.
6. Do not use worn down wheels from larger
power tools. Wheel intended for larger power tool
is not suitable for the higher speed of a smaller
tool and may burst.
Additional Safety Warnings Specic for Abrasive
Cutting-Off Operations:
1. Do not “jam“ the cut-off wheel or apply exces-
sive pressure. Do not attempt to make an
excessive depth of cut. Overstressing the wheel
increases the loading and susceptibility to twisting
or binding of the wheel in the cut and the possibil-
ity of kickback or wheel breakage.
2. Do not position your body in line with and
behind the rotating wheel. When the wheel, at
the point of operation, is moving away from your
body, the possible kickback may propel the spin-
ning wheel and the power tool directly at you.
3. When wheel is binding or when interrupting
a cut for any reason, switch off the power
tool and hold the power tool motionless until
the wheel comes to a complete stop. Never
attempt to remove the cut-off wheel from the
cut while the wheel is in motion otherwise
kickback may occur. Investigate and take correc-
tive action to eliminate the cause of wheel binding.
4. Do not restart the cutting operation in the
workpiece. Let the wheel reach full speed and
carefully re-enter the cut. The wheel may bind,
walk up or kickback if the power tool is restarted in
the workpiece.
5. Support panels or any oversized workpiece to
minimize the risk of wheel pinching and kick-
back. Large workpieces tend to sag under their
own weight. Supports must be placed under the
workpiece near the line of cut and near the edge
of the workpiece on both sides of the wheel.
6. Use extra caution when making a “pocket cut”
into existing walls or other blind areas. The
protruding wheel may cut gas or water pipes, elec-
trical wiring or objects that can cause kickback.
Safety Warnings Specic for Sanding Operations:
1. Do not use excessively oversized sanding
disc paper. Follow manufacturers recommen-
dations, when selecting sanding paper. Larger
sanding paper extending beyond the sanding
pad presents a laceration hazard and may cause
snagging, tearing of the disc or kickback.
Safety Warnings Specic for Wire Brushing
Operations:
1. Be aware that wire bristles are thrown by the
brush even during ordinary operation. Do not
overstress the wires by applying excessive

9ENGLISH
load to the brush. The wire bristles can easily
penetrate light clothing and/or skin.
2. If the use of a guard is recommended for wire
brushing, do not allow any 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:
1. When using depressed centre grinding wheels,
be sure to use only berglass-reinforced
wheels.
2. 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.
3. Be careful not to damage the spindle, the
ange (especially the installing surface) or the
lock nut. Damage to these parts could result in
wheel breakage.
4. Make sure the wheel is not contacting the
workpiece before the switch is turned on.
5. 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.
6. Use the specied surface of the wheel to per-
form the grinding.
7. Do not leave the tool running. Operate the tool
only when hand-held.
8. Do not touch the workpiece immediately after
operation; it may be extremely hot and could
burn your skin.
9. Observe the instructions of the manufacturer
for correct mounting and use of wheels.
Handle and store wheels with care.
10. Do not use separate reducing bushings or
adaptors to adapt large hole abrasive wheels.
11. Use only anges specied for this tool.
12. For tools intended to be tted with threaded
hole wheel, ensure that the thread in the wheel
is long enough to accept the spindle length.
13. Check that the workpiece is properly
supported.
14. Pay attention that the wheel continues to
rotate after the tool is switched off.
15. 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.
16. Do not use the tool on any materials contain-
ing asbestos.
17. When use cut-off wheel, always work with
the dust collecting wheel guard required by
domestic regulation.
18. Cutting discs must not be subjected to any
lateral pressure.
19. Do not use cloth work gloves during operation.
Fibers from cloth gloves may enter the tool, which
causes tool breakage.
SAVE THESE INSTRUCTIONS.
WARNING: DO NOT let comfort or familiarity
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.
Important safety instructions for
battery cartridge
1. Before using battery cartridge, read all instruc-
tions and cautionary markings on (1) battery
charger, (2) battery, and (3) product using
battery.
2. Do not disassemble battery cartridge.
3. If operating time has become excessively
shorter, stop operating immediately. It may
result in a risk of overheating, possible burns
and even an explosion.
4. If electrolyte gets into your eyes, rinse them
out with clear water and seek medical atten-
tion right away. It may result in loss of your
eyesight.
5. Do not short the battery cartridge:
(1) Do not touch the terminals with any con-
ductive material.
(2) Avoid storing battery cartridge in a con-
tainer with other metal objects such as
nails, coins, etc.
(3) Do not expose battery cartridge to water
or rain.
A battery short can cause a large current
ow, overheating, possible burns and even a
breakdown.
6. Do not store the tool and battery cartridge in
locations where the temperature may reach or
exceed 50 °C (122 °F).
7. Do not incinerate the battery cartridge even if
it is severely damaged or is completely worn
out. The battery cartridge can explode in a re.
8. Be careful not to drop or strike battery.
9. Do not use a damaged battery.
10. The contained lithium-ion batteries are subject
to the Dangerous Goods Legislation require-
ments.
For commercial transports e.g. by third parties,
forwarding agents, special requirement on pack-
aging and labeling must be observed.
For preparation of the item being shipped, consult-
ing an expert for hazardous material is required.
Please also observe possibly more detailed
national regulations.
Tape or mask off open contacts and pack up the
battery in such a manner that it cannot move
around in the packaging.
11. Follow your local regulations relating to dis-
posal of battery.
SAVE THESE INSTRUCTIONS.

10 ENGLISH
CAUTION: Only use genuine Makita batteries.
Use of non-genuine Makita batteries, or batteries that
have been altered, may result in the battery bursting
causing res, personal injury and damage. It will
also void the Makita warranty for the Makita tool and
charger.
Tips for maintaining maximum
battery life
1. Charge the battery cartridge before completely
discharged. Always stop tool operation and
charge the battery cartridge when you notice
less tool power.
2. Never recharge a fully charged battery car-
tridge. Overcharging shortens the battery
service life.
3. Charge the battery cartridge with room tem-
perature at 10 °C - 40 °C (50 °F - 104 °F). Let
a hot battery cartridge cool down before
charging it.
4. Charge the battery cartridge if you do not use
it for a long period (more than six months).
FUNCTIONAL
DESCRIPTION
CAUTION: Always be sure that the tool is
switched off and the battery cartridge is removed
before adjusting or checking function on the tool.
Installing or removing battery
cartridge
CAUTION: Always switch off the tool before
installing or removing of the battery cartridge.
CAUTION: Hold the tool and the battery car-
tridge rmly when installing or removing battery
cartridge. Failure to hold the tool and the battery
cartridge rmly may cause them to slip off your hands
and result in damage to the tool and battery cartridge
and a personal injury.
► Fig.1: 1. Red indicator 2. Button 3. Battery cartridge
To remove the battery cartridge, slide it from the tool
while sliding the button on the front of the cartridge.
To install the battery cartridge, align the tongue on the
battery cartridge with the groove in the housing and slip
it into place. Insert it all the way until it locks in place
with a little click. If you can see the red indicator on the
upper side of the button, it is not locked completely.
CAUTION: Always install the battery cartridge
fully until the red indicator cannot be seen. If not,
it may accidentally fall out of the tool, causing injury to
you or someone around you.
CAUTION: Do not install the battery cartridge
forcibly. If the cartridge does not slide in easily, it is
not being inserted correctly.
Indicating the remaining battery
capacity
Only for battery cartridges with "B" at the end of the
model number
► Fig.2: 1. Indicator lamps 2. Check button
Press the check button on the battery cartridge to indi-
cate the remaining battery capacity. The indicator lamps
light up for few seconds.
Indicator lamps Remaining
capacity
Lighted Off Blinking
75% to 100%
50% to 75%
25% to 50%
0% to 25%
Charge the
battery.
The battery
may have
malfunctioned.
NOTE: Depending on the conditions of use and the
ambient temperature, the indication may differ slightly
from the actual capacity.
Indicating the remaining battery
capacity
Country specic
When you turn the tool on, the battery indicator shows
the remaining battery capacity.
► Fig.3: 1. Battery indicator
The remaining battery capacity is shown as the follow-
ing table.
Battery indicator status Remaining
battery
capacity
On Off Blinking
50% - 100%
20% - 50%
0% - 20%
Charge the
battery

11 ENGLISH
Tool / battery protection system
The tool is equipped with a tool/battery protection
system. This system automatically cuts off power to
the motor to extend tool and battery life. The tool will
automatically stop during operation if the tool or battery
is placed under one of the following conditions. In some
conditions, the indicators light up.
Overload protection
When the tool is operated in a manner that causes it to
draw an abnormally high current, the tool automatically
stops without any indication. In this situation, turn the
tool off and stop the application that caused the tool to
become overloaded. Then turn the tool on to restart.
Overheat protection
When the tool is overheated, the tool stops automati-
cally and the battery indicator shows following state. In
this situation, let the tool cool before turning the tool on
again.
On Blinking
If the tool does not start, the battery may be overheated.
In this situation, let the battery cool before starting the
tool again.
Overdischarge protection
When the battery capacity is not enough, the tool stops
automatically. In this case, remove the battery from the
tool and charge the battery.
Releasing protection lock
When the protection system works repeatedly, the tool
is locked and the battery indicator shows the following
state.
In this situation, the tool does not start even if turning
the tool off and on. To release the protection lock,
remove the battery, set it to the battery charger and wait
until the charging nishes.
On Off Blinking
Shaft lock
Press the shaft lock to prevent spindle rotation when
installing or removing accessories.
► Fig.4: 1. Shaft lock
NOTICE: Never actuate the shaft lock when the
spindle is moving. The tool may be damaged.
Switch action
CAUTION: Before installing the battery cartridge
into 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.
CAUTION: Switch can be locked in "ON" posi-
tion for ease of operator comfort during extended
use. Apply caution when locking tool in "ON"
position and maintain rm grasp on tool.
To start the tool, slide the slide switch toward the “I (ON)” posi-
tion 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.
► Fig.5: 1. Slide switch
Automatic speed change function
► Fig.6: 1. Mode indicator
Mode indicator status Operation mode
High speed mode
High torque mode
This tool has "high speed mode" and "high torque mode". It
automatically changes operation mode depending on the work
load. When mode indicator lights up during operation, the tool
is in high torque mode.
Accidental re-start preventive
function
Even if the battery cartridge is installed on the tool with the
slide switch in the "I (ON)" position, the tool does not start.
To start the tool, rst slide the slide switch toward the "O
(OFF)" position and then slide it toward the "I (ON)" position.
Electronic torque control function
The tool electronically detects situations where the wheel or
accessory may be at risk to be bound. In the situation, the
tool is automatically shut off to prevent further rotation of the
spindle (it does not prevent kickback).
To restart the tool, switch off the tool rst, remove the cause of
sudden drop in the rotation speed, and then turn the tool on.
Soft start feature
Soft start feature reduces starting reaction.
Electric brake
Electric brake is activated after the tool is switched off.
The brake does not work when the power supply is shut
down, such as the battery is removed accidentally, with
the switch still on.

12 ENGLISH
ASSEMBLY
CAUTION: Always be sure that the tool is
switched off and the battery cartridge is removed
before adjusting or checking function 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 gure.
► Fig.7
Installing or removing wheel guard
(For depressed center wheel, ap
disc, ex wheel, wire wheel brush
/ abrasive cut-off wheel, diamond
wheel)
WARNING: When using a depressed center wheel,
ap disc, ex wheel or wire wheel brush, the wheel guard
must be tted on the tool so that the closed side of the
guard always points toward the operator.
WARNING: 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 locking screw type
wheel guard
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 proce-
dure in reverse.
► Fig.8: 1. Wheel guard 2. Bearing box 3. Screw
For tool with clamp lever type wheel
guard
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.
► Fig.9: 1. Wheel guard 2. Bearing box 3. Screw
4. Lever
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.10: 1. Screw 2. Lever
To remove wheel guard, follow the installation proce-
dure in reverse.
Installing or removing depressed
center wheel or ap disc
Optional accessory
WARNING: When using a depressed center
wheel or ap disc, the wheel guard must be tted
on the tool so that the closed side of the guard
always points toward the operator.
CAUTION: Make sure that the mounting part
of the inner ange ts into the inner diameter of
the depressed center wheel / ap disc perfectly.
Mounting the inner ange on the wrong side may
result in the dangerous vibration.
Mount the inner ange onto the spindle.
Make sure to t the dented part of the inner ange onto
the straight part at the bottom of the spindle.
Fit the depressed center wheel / ap disc on the inner
ange and screw the lock nut onto the spindle.
► Fig.11: 1. Lock nut 2. Depressed center wheel
3. Inner ange 4. Mounting part
To tighten the lock nut, press the shaft lock rmly so
that the spindle cannot revolve, then use the lock nut
wrench and securely tighten clockwise.
► Fig.12: 1. Lock nut wrench 2. Shaft lock
To remove the wheel, follow the installation procedure
in reverse.
Installing or removing ex wheel
Optional accessory
WARNING: Always use supplied guard when
ex wheel is on tool. Wheel can shatter during use
and guard helps to reduce chances of personal injury.
► Fig.13: 1. Lock nut 2. Flex wheel 3. Back up pad
4. Inner ange
Follow instructions for depressed center wheel but also
use back up pad over wheel. See order of assembly on
accessories page in this manual.
Installing or removing abrasive disc
Optional accessory
NOTE: Use sander accessories specied in this man-
ual. These must be purchased separately.
For 100 mm (4″) model
► Fig.14: 1. Sanding lock nut 2. Abrasive disc
3. Rubber pad 4. Inner ange
1. Mount the inner ange onto the spindle.
2. Mount the rubber pad onto the spindle.
3. Fit the disc on the rubber pad and screw the sand-
ing lock nut onto the spindle.
4. Hold the spindle with the shaft lock, and securely
tighten the sanding lock nut clockwise with the lock nut
wrench.
To remove the disc, follow the installation procedure in
reverse.

13 ENGLISH
For 115 mm (4 - 1/2″) / 125 mm (5″)
model
► Fig.15: 1. Sanding lock nut 2. Abrasive disc
3. Rubber pad
1. Mount the rubber pad onto the spindle.
2. Fit the disc on the rubber pad and screw the sand-
ing lock nut onto the spindle.
3.
Hold the spindle with the shaft lock, and securely tighten
the sanding lock nut clockwise with the lock nut wrench.
To remove the disc, follow the installation procedure in
reverse.
OPERATION
WARNING: It should never be necessary to
force the tool. The weight of the tool applies ade-
quate pressure. Forcing and excessive pressure
could cause dangerous wheel breakage.
WARNING: ALWAYS replace wheel if tool is
dropped while grinding.
WARNING: NEVER bang or hit grinding disc
or wheel onto work.
WARNING: Avoid bouncing and snagging the
wheel, especially when working corners, sharp edges
etc. This can cause loss of control and kickback.
WARNING: NEVER use tool with wood cutting
blades and other saw blades. Such blades when
used on a grinder frequently kick and cause loss of
control leading to personal injury.
CAUTION: Never switch on the tool when it
is in contact with the workpiece, it may cause an
injury to operator.
CAUTION: Always wear safety goggles or a
face shield during operation.
CAUTION: After operation, always switch off
the tool and wait until the wheel has come to a
complete stop before putting the tool down.
CAUTION: ALWAYS hold the tool rmly with one
hand on housing and the other on the side handle.
Grinding and sanding operation
► Fig.16
Turn the tool on and then apply the wheel or disc to the
workpiece.
In general, keep the edge of the wheel or disc at an
angle of about 15° to the workpiece surface.
During the break-in period with a new wheel, do not
work the grinder in forward direction or it may cut into
the workpiece. Once the edge of the wheel has been
rounded off by use, the wheel may be worked in both
forward and backward direction.
Operation with abrasive cut-off /
diamond wheel
Optional accessory
WARNING: 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.)
WARNING: NEVER use cut-off wheel for side
grinding.
WARNING: Do not "jam" the wheel or apply
excessive pressure. Do not attempt to make an
excessive depth of cut. Overstressing the wheel
increases the loading and susceptibility to twisting
or binding of the wheel in the cut and the possibility
of kickback, wheel breakage and overheating of the
motor may occur.
WARNING: Do not start the cutting operation
in the workpiece. Let the wheel reach full speed
and carefully enter into the cut moving the tool
forward over the workpiece surface. The wheel
may bind, walk up or kickback if the power tool is
started in the workpiece.
WARNING: During cutting operations, never
change the angle of the wheel. Placing side pressure on
the cut-off wheel (as in grinding) will cause the wheel to
crack and break, causing serious personal injury.
WARNING: A diamond wheel shall be oper-
ated perpendicular to the material being cut.
► Fig.17: 1. Lock nut 2. Abrasive cut-off wheel / dia-
mond wheel 3. Inner ange 4. Wheel guard
for abrasive cut-off wheel / diamond wheel
As for the installation, follow the instructions for
depressed center wheel.
The direction for mounting the lock nut and the
inner ange varies by wheel type and thickness.
Refer to the following gures.
For 100 mm (4″) model
When installing the abrasive cut-off wheel:
► Fig.18: 1. Lock nut 2. Abrasive cut-off wheel
(Thinner than 4mm (5/32")) 3. Abrasive cut-
off wheel (4mm (5/32") or thicker) 4. Inner
ange
When installing the diamond wheel:
► Fig.19: 1. Lock nut 2. Diamond wheel (Thinner
than 4mm (5/32″)) 3. Diamond wheel (4mm
(5/32″) or thicker) 4. Inner ange
For 115 mm (4 - 1/2″) / 125 mm (5″)
model
When installing the abrasive cut-off wheel:
► Fig.20: 1. Lock nut 2. Abrasive cut-off wheel
(Thinner than 4mm (5/32")) 3. Abrasive cut-
off wheel (4mm (5/32") or thicker) 4. Inner
ange

14 ENGLISH
When installing the diamond wheel:
► Fig.21: 1. Lock nut 2. Diamond wheel (Thinner
than 4mm (5/32″)) 3. Diamond wheel (4mm
(5/32″) or thicker) 4. Inner ange
Operation with wire cup brush
Optional accessory
CAUTION: Check operation of brush by run-
ning tool with no load, insuring that no one is in
front of or in line with brush.
CAUTION: Do not use brush that is damaged,
or which is out of balance. Use of damaged brush
could increase potential for injury from contact with
broken brush wires.
► Fig.22: 1. Wire cup brush
Remove the battery cartridge from the tool and place it
upside down allowing easy access to spindle.
Remove any accessories on spindle. Thread wire cup
brush onto spindle and tighten with supplied wrench.
NOTICE: Avoid applying too much pressure
which causes over bending of wires when using
brush. It may lead to premature breakage.
Operation with wire wheel brush
Optional accessory
CAUTION: Check operation of wire wheel
brush by running tool with no load, insuring that
no one is in front of or in line with the wire wheel
brush.
CAUTION: Do not use wire wheel brush that
is damaged, or which is out of balance. Use of
damaged wire wheel brush could increase potential
for injury from contact with broken wires.
CAUTION: ALWAYS use guard with wire
wheel brushes, assuring diameter of wheel ts
inside guard. Wheel can shatter during use and
guard helps to reduce chances of personal injury.
► Fig.23: 1. Wire wheel brush
Remove the battery cartridge from the tool and place it
upside down allowing easy access to spindle.
Remove any accessories on spindle. Thread wire wheel
brush onto spindle and tighten with the wrenches.
NOTICE: Avoid applying too much pressure
which causes over bending of wires when
using wire wheel brush. It may lead to premature
breakage.
MAINTENANCE
CAUTION: Always be sure that the tool is
switched off and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
NOTICE: Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
Air vent cleaning
The tool and its air vents have to be kept clean.
Regularly clean the tool's air vents or whenever the
vents start to become obstructed.
► Fig.24: 1. Exhaust vent 2. Inhalation vent
Remove the dust cover from inhalation vent and clean it
for smooth air circulation.
► Fig.25: 1. Dust cover
NOTE: Clean out the dust cover when it is clogged
with dust or foreign matters. Continuing operation
with a clogged dust cover may damage the tool.

15 ENGLISH
OPTIONAL ACCESSORIES
CAUTION: These accessories or attachments are recommended for use with your Makita tool spec-
ied in this manual. The use of any other accessories or attachments might present a risk of injury to persons.
Only use accessory or attachment for its stated purpose.
If you need any assistance for more details regarding these accessories, ask your local Makita Service Center.
• Makita genuine battery and charger
► Fig.26
-100 mm (4″) model 115 mm (4-1/2″) model 125 mm (5″) model
1Grip 36
2Wheel Guard (for grinding wheel)
3Inner ange
4Depressed center wheel / Flap disc
5Lock nut
6Back up pad
7Flex wheel
8Inner ange and rubber pad 76 Rubber pad 100 Rubber pad 115
9Abrasive disc
10 Sanding lock nut
11 Wire wheel brush
12 Wire cup brush
13 Wheel Guard (for cut-off wheel) *1
14 Abrasive cut-off wheel / Diamond wheel
-Lock nut wrench
NOTE: *1 In some European countries, when using a diamond wheel, the ordinary guard can be used instead of the
special guard covering the both side of the wheel. Follow the regulations in your country.
NOTE: Some items in the list may be included in the tool package as standard accessories. They may differ from
country to country.