Makita GA048G Používateľská príručka

GA048G

GA049G

GA050G

GA051G

EN Cordless Angle Grinder INSTRUCTION MANUAL 8

PL Akumulatorowa szlierka

kątowa INSTRUKCJA OBSŁUGI 22

HU Akkumulátoros sarokcsiszoló HASZNÁLATI KÉZIKÖNYV 37

SK Ručná uhlová brúska NÁVOD NA OBSLUHU 52

CS Akumulátorová úhlová

bruska NÁVOD K OBSLUZE 66

UK Бездротова кутова

шліфувальна машина ІНСТРУКЦІЯ З

ЕКСПЛУАТАЦІЇ 80

RO Polizor unghiular cu

acumulator MANUAL DE INSTRUCŢIUNI 96

DE Akku-Winkelschleifer BETRIEBSANLEITUNG 111

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16 mm (5/8″) 16 mm (5/8″)

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8ENGLISH

ENGLISH (Original instructions)

SPECIFICATIONS

Model: GA048G GA049G GA050G GA051G

Applicable grinding wheel Max. wheel diameter 100 mm 115 mm 125 mm 150 mm

Max. wheel thickness 6.4 mm 7.2 mm 6.4 mm

Applicable cut-o wheel Max. wheel diameter 105 mm 115 mm 125 mm 150 mm

Max. wheel thickness 3.2 mm 3.0 mm

Applicable wire wheel brush Max. wheel diameter 100 mm 115 mm 125 mm

Max. wheel thickness 20 mm

Spindle thread M10 M14 or 5/8″ (country specic)

Max. spindle length 18 mm 23 mm

No load speed (n0) / Rated speed (n) 11,000 min-1 9,000 min-1

Overall length (with BL4040) 410 mm

Net weight 2.8 - 5.2 kg 3.0 - 5.4 kg 3.1 - 4.7 kg

Rated voltage D.C. 36 V - 40 V max

• Due to our continuing program of research and development, the specications herein are subject to change

without notice.

• Specications may dier from country to country.

• The weight may dier depending on the attachment(s), including the battery cartridge. The lightest and heavi-

est combinations, according to EPTA-Procedure 01/2014, are shown in the table.

Applicable battery cartridge and charger

Battery cartridge BL4020 / BL4025* / BL4040* / BL4050F* / BL4080F

* : Recommended battery

Charger DC40RA / DC40RB / DC40RC

•

Some of the battery cartridges and chargers listed above may not be available depending on your region of residence.

WARNING: Only use the battery cartridges and chargers listed above. Use of any other battery cartridges

and chargers may cause injury and/or re.

Recommended cord connected power source

Portable power pack PDC01 / PDC1200

• The cord connected power source(s) listed above may not be available depending on your region of residence.

• Before using the cord connected power source, read instruction and cautionary markings on them.

Symbols

The followings show the symbols which may be used

for the equipment. Be sure that you understand their

meaning before use.

Read instruction manual.

Wear safety glasses.

Always operate with two hands.

Do not use the wheel guard for cut-o

operations.

Ni-MH

Li-ion

Only for EU countries

Due to the presence of hazardous com-

ponents in the equipment, waste electrical

and electronic equipment, accumulators

and batteries may have a negative impact

on the environment and human health.

Do not dispose of electrical and electronic

appliances or batteries with household waste!

In accordance with the European Directive

on waste electrical and electronic equip-

ment and on accumulators and batteries

and waste accumulators and batteries,

as well as their adaptation to national law,

waste electrical equipment, batteries and

accumulators should be stored separately

and delivered to a separate collection point

for municipal waste, operating in accor-

dance with the regulations on environmen-

tal protection.

This is indicated by the symbol of the

crossed-out wheeled bin placed on the

equipment.

9ENGLISH

Intended use

The tool is intended for grinding, sanding, wire brush-

ing, hole cutting and cutting of metal and stone materi-

als without the use of water.

Noise

The typical A-weighted noise level determined according to EN62841-2-3:

Model Sound pressure

level (LpA) : (dB(A)) Sound power level

(LWA) : (dB(A)) Uncertainty (K) :

(dB(A))

GA048G 84 92 3

GA049G 85 93 3

GA050G 85 93 3

GA051G 85 93 3

NOTE: The declared noise emission value(s) has been measured in accordance with a standard test method and

may be used for comparing one tool with another.

NOTE: The declared noise emission value(s) may also be used in a preliminary assessment of exposure.

WARNING: Wear ear protection.

WARNING: The noise emission during actual use of the power tool can dier from the declared val-

ue(s) depending on the ways in which the tool is used especially what kind of workpiece is processed.

WARNING: Be sure to identify safety measures to protect the operator that are based on an estimation

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 o and when it is running idle in addition to the trigger time).

WARNING: Grinding thin sheets of metal or other easily vibrating structures with a large surface can

result in a total noise emission much higher (up to 15 dB) than the declared noise emission values.

Set heavy exible damping mats or such to those workpieces to prevent them from emitting sound.

Take the increased noise emission into consideration for both the risk assessment of noise exposure and

selecting adequate hearing protection.

Vibration

The vibration total value (tri-axial vector sum) determined according to EN62841-2-3:

Work mode: surface grinding with normal side grip

Model

Vibration emission (ah, AG) : (m/s2)

Uncertainty (K) : (m/s2)

GA048G 8.2 1.5

GA049G 8.5 1.5

GA050G 8.9 2.2

GA051G 12.1 1.5

Work mode: surface grinding with anti vibration side grip

Model

Vibration emission (ah, AG) : (m/s2)

Uncertainty (K) : (m/s2)

GA048G 7.1 1.5

GA049G 7.7 1.5

GA050G 8.8 1.5

GA051G 12.7 1.6

Work mode: disc sanding with normal side grip

Model

Vibration emission (ah, DS) : (m/s2)

Uncertainty (K) : (m/s2)

GA048G 2.5 m/s2 or less 1.5

GA049G 2.8 1.5

GA050G 2.6 1.5

GA051G 3.1 1.5

10 ENGLISH

Work mode: disc sanding with anti vibration side grip

Model

Vibration emission (ah, DS) : (m/s2)

Uncertainty (K) : (m/s2)

GA048G 2.5 m/s2 or less 1.5

GA049G 2.8 1.5

GA050G 2.5 1.5

GA051G 3.5 1.5

NOTE: The declared vibration total value(s) has been measured in accordance with a standard test method and

may be used for comparing one tool with another.

NOTE: The declared vibration total value(s) may also be used in a preliminary assessment of exposure.

WARNING: The vibration emission during actual use of the power tool can dier from the declared

value(s) depending on the ways in which the tool is used especially what kind of workpiece is processed.

WARNING: Be sure to identify safety measures to protect the operator that are based on an estimation

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 o 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 applications, the vibration emission value may be dierent.

Declarations of Conformity

For European countries only

The Declarations of conformity are included in Annex A

to this instruction manual.

SAFETY WARNINGS

General power tool safety warnings

WARNING Read all safety warnings, instructions,

illustrations and specications provided with this

power tool. Failure to follow all instructions listed below

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 cutting-o operations:

1.

This power tool is intended to function as a grinder,

sander, wire brush, hole cutter or cut-o tool. Read

all safety warnings, instructions, illustrations and

specications 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 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 convert this power tool to operate in

a way which is not specically designed and

specied by the tool manufacturer. Such a con-

version may result in a loss of control and cause

serious personal injury.

4. Do not use accessories which are not spe-

cically designed and specied by the tool

manufacturer. Just because the accessory can

be attached to your power tool, it does not assure

safe operation.

5. 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.

6. 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.

7. The dimensions of the accessory mounting

must t the dimensions of the mounting hard-

ware of the power tool. 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.

8. 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.

9. 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 applications.

The dust mask or respirator must be capable

of ltrating particles generated by the particular

application. Prolonged exposure to high intensity

noise may cause hearing loss.

11 ENGLISH

10. 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.

11. 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.

12. 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.

13. 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.

14. 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.

15. Do not operate the power tool near ammable

materials. Sparks could ignite these materials.

16. 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 move-

ment 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 with both hands on the

power tool and position your body and arms

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 kickback 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,

segmented diamond wheel with a peripheral

gap greater than 10 mm or toothed saw blade.

Such blades create frequent kickback and loss of

control.

Safety warnings specic for grinding and cut-

ting-o operations:

1. Use only wheel types that are specied

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, acci-

dental contact with wheel and sparks that could

ignite clothing.

4.

Wheels must be used only for specied applica-

tions. For example: do not grind with the side of

cut-o wheel. Abrasive cut-o 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-o wheels may be dierent from

grinding wheel anges.

6. Do not use worn down wheels from larger

power tools. A wheel intended for larger power

tool is not suitable for the higher speed of a

smaller tool and may burst.

7. When using dual purpose wheels always use

the correct guard for the application being

performed. Failure to use the correct guard may

not provide the desired level of guarding, which

could lead to serious injury.

Additional safety warnings specic for cutting-o

operations:

1. Do not “jam” the cut-o 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 the wheel is binding or when interrupt-

ing a cut for any reason, switch o the power

tool and hold it motionless until the wheel

comes to a complete stop. Never attempt to

remove the cut-o wheel from the cut while

the wheel is in motion otherwise kickback may

occur. Investigate and take corrective action to

eliminate the cause of wheel binding.

12 ENGLISH

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.

7. Do not attempt to do curved cutting.

Overstressing the wheel increases the loading and

susceptibility to twisting or binding of the wheel

in the cut and the possibility of kickback or wheel

breakage, which can lead to serious injury.

8. Before using a segmented diamond wheel,

make sure that the diamond wheel has the

peripheral gap between segments of 10 mm or

less, only with a negative rake angle.

Safety warnings specic for sanding operations:

1. Use proper sized sanding disc paper. Follow

manufacturers recommendations, when

selecting sanding paper. Larger sanding paper

extending too far beyond the sanding pad pres-

ents 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

load to the brush. The wire bristles can easily

penetrate light clothing and/or skin.

2. If the use of a guard is specied 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. Do not touch accessories immediately after

operation; it may be extremely hot and could

burn your skin.

10. Observe the instructions of the manufacturer

for correct mounting and use of wheels and

accessories. Incorrect mounting and use may

result in personal injury.

11. Handle and store wheels with care.

12. Do not use separate reducing bushings or

adaptors to adapt large hole abrasive wheels.

13. Use only anges specied for this tool.

14. 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.

15. Check that the workpiece is properly

supported.

16. Pay attention that the wheel continues to

rotate after the tool is switched o.

17. 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.

18. Do not use the tool on any materials contain-

ing asbestos.

19. When use cut-o wheel, always work with

the dust collecting wheel guard if required by

domestic regulation.

20. Cutting discs must not be subjected to any

lateral pressure.

21. Do not use cloth work gloves during operation.

Fibers from cloth gloves may enter the tool, which

causes tool breakage.

22. Before operation, make sure that there is no

buried object such as electric pipe, water pipe

or gas pipe in the workpiece. Otherwise, it may

cause an electric shock, electrical leakage or gas

leak.

23. If a blotter is attached to the wheel, do not

remove it. The diameter of the blotter must be

larger than the lock nut, outer ange, and inner

ange.

24. Before installing a grinding wheel, always

check that the blotter part does not have any

abnormalities such as chips or cracks.

25. Tighten the lock nut properly. Overtightening

the wheel can cause breakage and insucient

tightening can cause uttering.

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.

13 ENGLISH

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 or tamper with the battery

cartridge. It may result in a re, excessive heat,

or explosion.

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 and use the tool and battery car-

tridge 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. Do not nail, cut, crush, throw, drop the battery

cartridge, or hit against a hard object to the

battery cartridge. Such conduct may result in a

re, excessive heat, or explosion.

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 o open contacts and pack up the

battery in such a manner that it cannot move

around in the packaging.

11. When disposing the battery cartridge, remove

it from the tool and dispose of it in a safe

place. Follow your local regulations relating to

disposal of battery.

12. Use the batteries only with the products

specied by Makita. Installing the batteries to

non-compliant products may result in a re, exces-

sive heat, explosion, or leak of electrolyte.

13. If the tool is not used for a long period of time,

the battery must be removed from the tool.

14. During and after use, the battery cartridge may

take on heat which can cause burns or low

temperature burns. Pay attention to the han-

dling of hot battery cartridges.

15. Do not touch the terminal of the tool imme-

diately after use as it may get hot enough to

cause burns.

16. Do not allow chips, dust, or soil stuck into the

terminals, holes, and grooves of the battery

cartridge. It may cause heating, catching re,

burst and malfunction of the tool or battery car-

tridge, resulting in burns or personal injury.

17. Unless the tool supports the use near

high-voltage electrical power lines, do not use

the battery cartridge near high-voltage electri-

cal power lines. It may result in a malfunction or

breakdown of the tool or battery cartridge.

18. Keep the battery away from children.

SAVE THESE INSTRUCTIONS.

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. When not using the battery cartridge, remove

it from the tool or the charger.

5. Charge the battery cartridge if you do not use

it for a long period (more than six months).

14 ENGLISH

FUNCTIONAL DESCRIPTION

WARNING: Always be sure that the tool is

switched o and the battery cartridge is removed

before adjusting or checking function on the tool.

Installing or removing battery cartridge

CAUTION: Always switch o 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 o 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 as

shown in the gure, 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

Press the check button on the battery cartridge to indi-

cate the remaining battery capacity. The indicator lamps

light up for a few seconds.

► Fig.2: 1. Indicator lamps 2. Check button

Indicator lamps Remaining

capacity

Lighted O 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 dier slightly

from the actual capacity.

NOTE: The rst (far left) indicator lamp will blink when

the battery protection system works.

Tool / battery protection system

The tool is equipped with a tool/battery protection sys-

tem. This system automatically cuts o power to the

motor to extend tool and battery life. The tool will auto-

matically stop during operation if the tool or battery is

placed under one of the following conditions:

Overload protection

When the tool/battery is operated in a manner that

causes it to draw an abnormally high current, the tool

automatically stops without any indication. In this sit-

uation, turn the tool o and stop the application that

caused the tool to become overloaded. Then turn the

tool on to restart.

Overheat protection

When the tool/battery is overheated, the tool stops

automatically. Let the tool cool down before turning the

tool on 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.

In this situation, the tool does not start even if turning

the tool o and on. To release the protection lock,

remove the battery, set it to the battery charger and wait

until the charging nishes.

Protections against other causes

Protection system is also designed for other causes

that could damage the tool and allows the tool to stop

automatically. Take all the following steps to clear the

causes, when the tool has been brought to a temporary

halt or stop in operation.

1.

Turn the tool o, and then turn it on again to restart.

2. Charge the battery(ies) or replace it/them with

recharged battery(ies).

3. Let the tool and battery(ies) cool down.

If no improvement can be found by restoring protection

system, then contact your local Makita Service Center.

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.

► Fig.3: 1. Shaft lock

15 ENGLISH

Switch action

CAUTION: Before installing the battery car-

tridge into the tool, always check to see that the

switch lever actuates properly and returns to the

"OFF" position when released.

CAUTION: For your safety, this tool is

equipped with lock-o lever which prevents the

tool from unintended starting. NEVER use the tool

if it runs when you simply pull the switch lever

without pulling the lock-o lever. Return the tool

to our authorized service center for proper repairs

BEFORE further usage.

CAUTION: Do not pull the switch lever hard

without pulling the lock-o lever. This can cause

switch breakage.

CAUTION: NEVER tape down or defeat pur-

pose and function of lock-o lever.

To prevent the switch lever from being accidentally

pulled, a lock-o lever is provided.

To start the tool, pull the lock-o lever toward the opera-

tor and then pull the switch lever.

To stop the tool, release the switch lever.

► Fig.4: 1. Lock-o lever 2. Switch lever

Accidental re-start preventive

function

When installing the battery cartridge while the switch is

ON, the tool does not start.

To start the tool, turn o the switch, and turn it on again.

Active Feedback sensing

Technology

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 o to prevent

further rotation of the spindle (it does not prevent

kickback).

To restart the tool, switch o 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 o.

The brake does not work when the power supply is shut

down, such as the battery is removed accidentally, with

the switch still on.

ASSEMBLY

WARNING: Always be sure that the tool is

switched o 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.5

Installing or removing wheel guard

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: Make sure that the wheel guard is

securely locked by the lock lever with one of the

holes on the wheel guard.

WARNING: When using an abrasive cut-o

/ diamond wheel, be sure to use only the special

wheel guard designed for use with cut-o wheels.

For depressed center wheel, ap disc,

ex wheel, wire wheel brush / abrasive

cut-o wheel, diamond wheel

1. While pushing the lock lever, mount the wheel

guard with the protrusions on the wheel guard aligned

with the notches on the bearing box.

► Fig.6: 1. Lock lever 2. Notch 3. Protrusion

2.

While pushing the lock lever toward A, hold down

the portions B of the wheel guard as shown in the gure.

► Fig.7: 1. Wheel guard 2. Hole

NOTE: Push down the wheel guard straight.

Otherwise, you cannot secure the wheel guard.

3.

While pushing the lock lever toward A, rotate the wheel

guard toward C, and then, change the angle of the wheel

guard according to the work so that the operator can be pro-

tected. Align the lock lever with one of the holes in the wheel

guard, and then release the lock lever to lock the wheel guard.

► Fig.8: 1. Wheel guard 2. Hole

To remove wheel guard, follow the installation proce-

dure in reverse.

Clip-on cutting wheel guard attachment

Optional accessory

NOTE: For cutting-o operations, a clip-on cutting

wheel guard attachment can be used with the wheel

guard (for grinding wheel).

Not available in some countries.

► Fig.9

16 ENGLISH

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.

WARNING: 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.10: 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.11: 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 the tool. Wheel can shatter during

use and guard helps to reduce chances of personal

injury.

► Fig.12: 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.

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.13: 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.

For model other than 100 mm (4″)

► Fig.14: 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.

Installing or removing Ezynut

Optional accessory

Only for tools with M14 spindle thread.

Mount inner ange, abrasive wheel and Ezynut onto the

spindle so that Makita Logo on Ezynut faces outside.

► Fig.15: 1. Ezynut 2. Abrasive wheel 3. Inner ange

4. Spindle

Press shaft lock rmly and tighten Ezynut by turning the

abrasive wheel clockwise as far as it turns.

► Fig.16: 1. Shaft lock

To loosen the Ezynut, turn the outside ring of Ezynut

counterclockwise.

NOTE: Ezynut can be loosened by hand as long

as the arrow points the notch. Otherwise a lock nut

wrench is required to loosen it. Insert one pin of the

wrench into a hole and turn Ezynut counterclockwise.

► Fig.17: 1. Arrow 2. Notch

► Fig.18

Installing abrasive cut-o / diamond

wheel

Optional accessory

WARNING: When using an abrasive cut-o

/ diamond wheel, be sure to use only the special

wheel guard designed for use with cut-o wheels.

WARNING: NEVER use cut-o wheel for side

grinding.

CAUTION: When installing the diamond

wheel, be sure to align the direction of the arrow

on the wheel with the arrow on the tool.

► Fig.19: 1. Lock nut 2. Abrasive cut-o wheel / dia-

mond wheel 3. Inner ange 4. Wheel guard

for abrasive cut-o 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.

17 ENGLISH

Refer to the following gures.

For 100 mm (4″) model

When installing the abrasive cut-o wheel:

► Fig.20: 1. Lock nut 2. Abrasive cut-o wheel

(Thinner than 4 mm (5/32")) 3. Abrasive cut-

o wheel (4 mm (5/32") or thicker) 4. Inner

ange

When installing the diamond wheel:

► Fig.21: 1. Lock nut 2. Diamond wheel (Thinner than

4 mm (5/32″)) 3. Diamond wheel (4 mm

(5/32″) or thicker) 4. Inner ange

For model other than 100 mm (4″)

When installing the abrasive cut-o wheel:

► Fig.22: 1. Lock nut 2. Abrasive cut-o wheel

(Thinner than 4 mm (5/32")) 3. Abrasive cut-

o wheel (4 mm (5/32") or thicker) 4. Inner

ange

When installing the diamond wheel:

► Fig.23: 1. Lock nut 2. Diamond wheel (Thinner than

4 mm (5/32″)) 3. Diamond wheel (4 mm

(5/32″) or thicker) 4. Inner ange

Installing wire cup brush

Optional accessory

CAUTION: Do not use wire cup brush that

is damaged, or which is out of balance. Use of

damaged wire cup brush could increase potential for

injury from contact with broken brush wires.

Place the tool upside down to allow easy access to the

spindle.

Remove any accessories on spindle. Thread wire cup

brush onto spindle and tighten with supplied wrench.

► Fig.24: 1. Wire cup brush

Installing wire wheel brush

Optional accessory

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.

Place the tool upside down to allow easy access to the

spindle.

Remove any accessories on spindle. Thread wire wheel

brush onto spindle and tighten with the wrenches.

► Fig.25: 1. Wire wheel brush

Installing hole cutter

Optional accessory

Place the tool upside down to allow easy access to the

spindle.

Remove any accessories on the spindle. Thread the

hole cutter onto the spindle, and tighten it with the sup-

plied wrench.

► Fig.26: 1. Hole cutter

Installing dust collecting wheel

guard for grinding

Only for model GA049G / GA050G

Optional accessory

With optional accessories, you can use this tool for

planing concrete surface.

CAUTION: Dust collecting wheel guard for

grinding is only for use in planing concrete sur-

face with a cup-type diamond wheel. Do not use

this guard with any other cutting accessory or for

any other purpose.

CAUTION: Before operation, make sure that

a vacuum cleaner is connected to the tool and

turned on.

Place the tool upside down and install the dust collect-

ing wheel guard.

Mount the inner ange onto the spindle.

Fit the cup-type diamond wheel on the inner ange and

tighten the lock nut onto the spindle.

► Fig.27: 1. Lock nut 2. Cup-type diamond wheel

3. Hubbed cup-type diamond wheel 4. Inner

ange 5. Dust collecting wheel guard

6. Bearing box

NOTE: For information how to install the dust col-

lecting wheel guard, refer to the manual of the dust

collecting wheel guard.

Installing dust collecting wheel

guard for cutting-o

Only for model GA048G / GA049G / GA050G

Optional accessory

With optional accessories, you can use this tool for

cutting stone materials.

► Fig.28

NOTE: For information how to install the dust col-

lecting wheel guard, refer to the manual of the dust

collecting wheel guard.

18 ENGLISH

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 hit the workpiece with the

wheel.

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 o

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

grip (handle).

NOTE: A dual purpose wheel can be used for both

grinding and cutting-o operations.

Refer to the "Grinding and sanding operation" for

grinding operation, and refer to the "Operation with

abrasive cut-o / diamond wheel" for cutting-o

operation.

Grinding and sanding operation

► Fig.29

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 o by use, the wheel may be worked in both

forward and backward direction.

Usage example: operation with cup-type diamond

wheel

► Fig.30

Keep the tool horizontally and apply the entire cup-type

diamond wheel to the workpiece surface.

Operation with abrasive cut-o /

diamond wheel

Optional accessory

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 pres-

sure on the cut-o wheel (as in grinding) will cause

the wheel to crack and break, causing serious per-

sonal injury.

WARNING: A diamond wheel shall be oper-

ated perpendicular to the material being cut.

Usage example: operation with abrasive cut-o

wheel

► Fig.31

Usage example: operation with diamond wheel

► Fig.32

Operation with wire cup brush

Optional accessory

CAUTION: Check operation of wire cup brush

by running tool with no load, insuring that no one

is in front of or in line with wire cup brush.

NOTICE: Avoid applying too much pressure

which causes over bending of wires when using

the wire cup brush. It may lead to premature

breakage.

Usage example: operation with wire cup brush

► Fig.33

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.

NOTICE: Avoid applying too much pressure

which causes over bending of wires when

using wire wheel brush. It may lead to premature

breakage.

Usage example: operation with wire wheel brush

► Fig.34

19 ENGLISH

Operation with hole cutter

Optional accessory

CAUTION: Check operation of the hole cutter

by running the tool with no load, insuring that no

one is in front of the hole cutter.

NOTICE: Do not tilt the tool during operation. It

may lead to premature breakage.

Usage example: operation with hole cutter

► Fig.35

MAINTENANCE

WARNING: Always be sure that the tool is

switched o 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.

To maintain product SAFETY and RELIABILITY,

repairs, any other maintenance or adjustment should

be performed by Makita Authorized or Factory Service

Centers, always using Makita replacement parts.

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.36: 1. Exhaust vent 2. Inhalation vent

Remove the dust cover from inhalation vent and clean it

for smooth air circulation.

► Fig.37: 1. Dust cover

NOTICE: 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.

20 ENGLISH

COMBINATION OF APPLICATIONS AND

ACCESSORIES

Optional accessory

CAUTION: Using the tool with incorrect guards can cause risks as follows.

• When using a cut-o wheel guard for facial grinding, the wheel guard may interfere with the work-

piece causing poor control.

• When using a grinding wheel guard for cutting-o operations with bonded abrasive wheels and dia-

mond wheels, there is an increased risk of exposure to rotating wheels, emitted sparks and particles,

as well as exposure to wheel fragments in the event of wheel burst.

• When using a cut-o wheel guard or grinding wheel guard for facial operations with cup-type dia-

mond wheels, the wheel guard may interfere with the workpiece causing poor control.

• When using a cut-o wheel guard or grinding wheel guard with a wheel-type wire brush with a thick-

ness greater than the maximum thickness as specied in "SPECIFICATIONS", the wires may catch on

the guard leading to breaking of wires.

• Use of dust collecting wheel guards for cutting-o and facial operations in concrete or masonry

reduces a risk of exposure to dust.

• When using dual purpose (combined grinding and cutting-o abrasive) ange mounted wheels, only

use a cut-o wheel guard.

1

2

5

22

11

12

4

3

7

9

10

13

33

14 2

17

3

16

15

16

17

19

20

3

21

3

18

22

6

5

56

5656

8

-Application 100 mm model 115 mm model 125 mm model 150 mm model

1 - Side grip

2 - Wheel guard (for grinding wheel)

3 - Inner ange

4Grinding / Sanding Depressed center wheel / Flap disc

5 - Lock nut

6 - - Ezynut *1

7 - Back up pad

8Grinding Flex wheel

9 - Inner ange and

rubber pad 76 Rubber pad 100 Rubber pad 115 Rubber pad 125

10 Sanding Abrasive disc

11 -Sanding lock nut

12 Wire brushing Wire wheel brush

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