DGA519Z - Grinder MAKITA - Free user manual and instructions

Product Type	Cordless Angle Grinder
Brand	Makita
Model	DGA519Z
Disc Diameter	125 mm
Battery Type	Lithium-ion 18 V LXT
Motor	Brushless
No Load Speed	8500 rpm
Variable Speed	Yes, adjustment wheel
Soft Start	Yes (Soft start)
Electric Brake	Yes
Anti-Restart Protection	Yes
Shaft Lock	Yes
Slide Switch	With lock
Shaft Thread Capacity	M14
Weight (without battery)	Approx. 2.3 kg
Overall Length	358 mm
Height	140 mm
Vibration Level (grinding)	7.0 m/s² (uncertainty K=1.5 m/s²)
Sound Pressure Level	78 dB(A), uncertainty 3 dB(A)
Power Supply	18 V battery (not included)
Maintenance and Cleaning	Regularly clean ventilation slots and replace carbon brushes (if present)
Safety	Switch lock, protective guard, emergency stop
Spare Parts and Repairability	Discs, batteries, chargers, carbon brushes, switch available
Warranty	1 year (according to local legislation)

Frequently Asked Questions - DGA519Z MAKITA

Which battery to use with the Makita DGA519Z?

Use a Makita 18 V LXT Li-ion battery (e.g., BL1815, BL1820, BL1850, etc.). The battery is not included in the Z version.

Which disc can I mount on this grinder?

The DGA519Z accepts discs with a diameter of 125 mm, a bore of 22.2 mm, and an arbor thread of M14. Use suitable grinding, cutting, or sanding discs.

How to adjust the speed?

Turn the adjustment wheel located on the grinder body. The positions range from 1 (minimum speed) to 6 (maximum speed). Adjust the speed according to the material and application.

Does the grinder have a brake?

Yes, it is equipped with an electric brake that quickly stops the disc after power cutoff for enhanced safety.

Can I use this grinder for cutting metal?

Yes, with a suitable 125 mm cutting disc. Ensure you use the protective guard and follow safety instructions.

How to change the disc?

Use the supplied wrench to lock the shaft using the lock button, then loosen the retaining nut. Replace the disc and tighten the nut firmly.

Is the grinder supplied with a battery and charger?

No, the DGA519Z model is sold as bare tool (tool only). The battery and charger are purchased separately.

What to do if the grinder does not start?

Check that the battery is charged and properly inserted, that the switch lock is disengaged, and that the anti-restart function is not active. Consult the manual for more details.

How to maintain the grinder?

Clean the ventilation slots regularly with a soft brush or compressed air. Check the condition of the carbon brushes (if brushed model) and replace them if necessary.

Which accessories are compatible?

Many Makita and third-party accessories: diamond discs, wire brushes, sanding pads, etc. Only use accessories with 125 mm diameter and M14 thread.

USER MANUAL DGA519Z MAKITA

Line drawing of a mechanical power tool with a central blade and surrounding components (no text or symbols)

Technical illustration of two mechanical components with rotating parts, showing assembly and disassembly (no text or symbols)

Fig.10

Diagram of a mechanical component with an arrow indicating direction, labeled Fig.13 (no text or symbols on the diagram itself)

Line drawing of a hand using a cutting tool to cut a circular object on a flat surface (no text or symbols)

Line drawing of a mechanical device with two protruding rods and a handle (no text or symbols)

Illustration of a hand using a power tool to clean or brush the surface (no text or symbols)

Line drawing of a hand using a tool to cut or adjust a mechanical component, labeled 'Fig.25' (no text on diagram)

Illustration of two hands operating a cutting tool with a no-smoking symbol, labeled Fig.22 (no text or symbols on the diagrams)

Technical line drawing of a mechanical component with labeled parts (no text or symbols present)

SPECIFICATIONS

Model: DGA419 DGA469 DGA519
Applicable grinding wheel Max. w	wheel diameter 100 mm 115 mm 125 mm
	Max. wheel thickness 6 mm
Applicable cut-off wheel Max. whe	heel diameter 100 mm 115 mm 125 mm
	Max. wheel thickness 1.6 mm
Applicable wire wheel brush Max.	wheel diameter - 115 mm
	Max. wheel thickness - 16 mm
No load speed (n0) / Rated speed (n)		8,500 min-1
Overall length	with BL1840B	396 mm
Net weight		2.4 - 3.0 kg	2.5 - 3.1 kg
Rated voltage		D.C. 18 V

• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Specifications may differ from country to country.
- The weight may differ depending on the attachment(s), including the battery cartridge. The lightest and heaviest combinations, according to EPTA-Procedure 01/2014, are shown in the table.

Applicable battery cartridge and charger

Battery cartridge	BL1815N / BL1820B / BL1830B / BL1840B / BL1850B / BL1860B
Charger	DC18RC / DC18RD / DC18RE / DC18SD / DC18SE / DC18SF / DC18SH / DC18WC

• 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 fire.

Recommended cord connected power source

Portable power pack

PDC01

• 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.

Ni-MH Li-ion

Only for EU countries

Due to the presence of hazardous components 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 equipment 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 accordance with the regulations on environmental protection.

This is indicated by the symbol of the crossed-out wheeled bin placed on the equipment.

Intended use

The tool is intended for grinding, sanding, wire brushing and cutting of metal and stone materials 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))
DGA419 83 91 3
DGA469 83 91 3
DGA519 83 91 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 differ 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 off 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 flexible 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 ( a_n, AG ) : (m/s2)	Uncertainty (K) : (m/s2)
DGA419 4.5 1.5
DGA469 5.0 1.5
DGA519 5.5 1.5

Work mode: surface grinding with anti vibration side grip

Model	Vibration emission ( a_1 , a_2 ) : (m/s ^2 )	Uncertainty (K) : (m/s ^2 )
DGA419 6.0 1.5
DGA469 5.5 1.5
DGA519 7.0 1.5

Work mode: disc sanding with normal side grip

Model	Vibration emission ( a_h, DS ) : (m/s2)	Uncertainty (K) : (m/s2)
DGA469 2.5 m/s	^2 or less 1.5
DGA519 2.5 m/s	^2 or less 1.5

Work mode: disc sanding with anti vibration side grip

Model	Vibration emission ( a_1, DS ) : (m/s2)	Uncertainty (K) : (m/s2)
DGA469 2.5 m/s	^2 or less 1.5
DGA519 2.5 m/s	^2 or less 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 differ 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 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 applications, the vibration emission value may be different.

EC Declaration of Conformity

For European countries only

The EC declaration of conformity is included as Annex A to this instruction manual.

SAFETY WARNINGS

General power tool safety warnings

WARNING Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.

Save all warnings and instructions 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-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 specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.

2. Operations such as polishing or hole cutting 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 specifically designed and specified by the tool manufacturer. Such a conversion may result in a loss of control and cause serious personal injury.

4. Do not use accessories which are not specifically designed and specified 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 fly 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 fit the dimensions of the mounting hardware 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 accessory 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 accessories 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 appropriate, wear dust mask, hearing protectors, gloves and workshop apron capable of stopping small abrasive or workpiece fragments. The eye protection must be capable of stopping flying debris generated by various applications. The dust mask or respirator must be capable of filtrating particles generated by the particular application. Prolonged exposure to high intensity noise may cause hearing loss.

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 fly 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 accessory 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 flammable 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 accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled 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 firm 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 accessory. 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 specific for grinding and cutting-off operations:

1. Use only wheel types that are specified for your power tool and the specific 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 specified 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 flanges that are of correct size and shape for your selected wheel. Proper wheel flanges support the wheel thus reducing the possibility of wheel breakage. Flanges for cut-off wheels may be different from grinding wheel flanges.
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 specific for cutting-off operations:

1. Do not "jam" the cut-off 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 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 spinning wheel and the power tool directly at you.
3. When the wheel is binding or when interrupting a cut for any reason, switch off the power tool and hold it 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 corrective 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, electrical 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 specific 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 presents a laceration hazard and may cause snagging, tearing of the disc or kickback.

Safety warnings specific 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 specified 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 fiberglass-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 X-LOCK holder. Damage to the 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 specified surface of the wheel to perform 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. Handle and store wheels with care.

11. Do not use separate reducing bushings or adaptors to adapt large hole abrasive wheels.

12. Check that the workpiece is properly supported.
13. Pay attention that the wheel continues to rotate after the tool is switched off.
14. If working place is extremely hot and humid, or badly polluted by conductive dust, use a short-circuit breaker (30 mA) to assure operator safety.
15. Do not use the tool on any materials containing asbestos.
16. When use cut-off wheel, always work with the dust collecting wheel guard if required by domestic regulation.
17. Cutting discs must not be subjected to any lateral pressure.
18. Do not use cloth work gloves during operation. Fibers from cloth gloves may enter the tool, which causes tool breakage.
19. 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.

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 instructions 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 fire, 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 attention 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 conductive material.
(2) Avoid storing battery cartridge in a container 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 flow, overheating, possible burns and even a breakdown.

1. Do not store and use the tool and battery cartridge in locations where the temperature may reach or exceed 50 °C (122 °F).
2. Do not incinerate the battery cartridge even if it is severely damaged or is completely worn out. The battery cartridge can explode in a fire.
3. 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 fire, excessive heat, or explosion.
4. Do not use a damaged battery.
5. The contained lithium-ion batteries are subject to the Dangerous Goods Legislation requirements.
   For commercial transports e.g. by third parties, forwarding agents, special requirement on packaging and labeling must be observed.
   For preparation of the item being shipped, consulting 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.
6. 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.
7. Use the batteries only with the products specified by Makita. Installing the batteries to non-compliant products may result in a fire, excessive heat, explosion, or leak of electrolyte.
8. If the tool is not used for a long period of time, the battery must be removed from the tool.
9. During and after use, the battery cartridge may take on heat which can cause burns or low temperature burns. Pay attention to the handling of hot battery cartridges.
10. Do not touch the terminal of the tool immediately after use as it may get hot enough to cause burns.
11. Do not allow chips, dust, or soil stuck into the terminals, holes, and grooves of the battery cartridge. It may cause heating, catching fire, burst and malfunction of the tool or battery cartridge, resulting in burns or personal injury.

12. Unless the tool supports the use near high-voltage electrical power lines, do not use the battery cartridge near high-voltage electrical power lines. It may result in a malfunction or breakdown of the tool or battery cartridge.

13. 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 fires, 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 cartridge. Overcharging shortens the battery service life.
3. Charge the battery cartridge with room temperature 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).

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 cartridge firmly when installing or removing battery cartridge. Failure to hold the tool and the battery cartridge firmly 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 as shown in the figure, 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 the indicator

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

Press the check button on the battery cartridge to indicate the remaining battery capacity. The indicator lamps light up for a 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.

NOTE: The first (far left) indicator lamp will blink when the battery protection system works.

Indicating the remaining battery capacity

Country specific

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 following table.

Battery indicator status Remaining			battery capacity
On Off		Blinking
			50% to 100%
			20% to 50%
			0% to 20%
			Charge the battery

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:

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 automatically 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 finishes.

On Off		Blinking

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 off, 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.

Switch action

⚠️CAUTION: Before installing the battery cartridge 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-off 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-off 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-off lever. This can cause switch breakage.
⚠️CAUTION: NEVER tape down or defeat purpose and function of lock-off lever.

To prevent the switch lever from being accidentally pulled, a lock-off lever is provided.

To start the tool, pull the lock-off lever toward the operator and then pull the switch lever.

To stop the tool, release the switch lever.

▶ Fig.4: 1. Lock-off lever 2. Switch lever

Speed adjusting dial

The rotation speed of the tool can be changed by turning the speed adjusting dial. The table below shows the number on the dial and the corresponding rotation speed.

▶ Fig.5: 1. Speed adjusting dial

Number Speed
1 3,000 min	-1
2 4,500 min	-1
3 6,000 min	-1
4 7,500 min	-1
5 8,500 min	-1

NOTICE: If the tool is operated continuously at low speed for a long time, the motor will get overloaded, resulting in tool malfunction.

NOTICE: 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.

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

When installing the battery cartridge while the switch is ON, the tool does not start.

To start the tool, turn off 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 off to prevent further rotation of the spindle (it does not prevent kickback).

To restart the tool, switch off the tool first, remove the cause of sudden drop in the rotation speed, and then turn the tool on.

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.

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 figure.

▶ Fig.7

Installing or removing wheel guard

WARNING: When using a depressed center wheel, flap disc or wire wheel brush, the wheel guard must be fitted 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-off / diamond wheel, be sure to use only the special wheel guard designed for use with cut-off wheels.

For depressed center wheel, flap disc, wire wheel brush / abrasive cut-off 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.8: 1. Lock lever 2. Notch 3. Protrusion

1. While pushing the lock lever toward A, push in the wheel guard by holding down the portions B as shown in the figure.

▶ Fig.9: 1. Wheel guard 2. Hole

NOTE: Push down the wheel guard straight. Otherwise, you cannot push the wheel guard completely.

1. While keeping the lock lever and wheel guard position as described in step 2, rotate the wheel guard toward C, and then, change the angle of the wheel guard according to the work.

▶ Fig.10: 1. Wheel guard 2. Hole

NOTE: Push the wheel guard completely. Otherwise, you cannot rotate the wheel guard.

To remove wheel guard, follow the installation procedure in reverse.

Installing depressed center wheel or flap disc

Optional accessory

⚠ WARNING: When using a depressed center wheel or a flap disc, the wheel guard must be fitted on the tool so that the closed side of the guard always points toward the operator.

▶ Fig.11: 1. Depressed center wheel 2. Wheel guard

Installing 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.

⚠ WARNING: NEVER use cut-off wheel for side grinding.

▶ Fig.12: 1. Abrasive cut-off wheel / diamond wheel
2. Wheel guard for abrasive cut-off wheel / diamond wheel

Clip-on cutting wheel guard attachment

Optional accessory

NOTE: For cutting-off operations, a clip-on cutting wheel guard attachment can be used with the wheel guard (for grinding wheel).

Not available in some countries.

▶ Fig.13

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 brush could increase potential for injury from contact with broken brush wires.

▶ Fig.14: 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 fits inside guard. Wheel can shatter during use and guard helps to reduce chances of personal injury.

▶ Fig.15: 1. Wire wheel brush 2. Wheel guard

Installing or removing X-LOCK wheel

Optional accessory

WARNING: Never actuate the release lever of the X-LOCK holder during operation. Make sure that the X-LOCK wheel has stopped completely when removing it. Otherwise, the X-LOCK wheel comes off from the tool and may cause serious injury.

CAUTION: Use only original X-LOCK wheels with the X-LOCK logo. This tool is dedicated to X-LOCK.

The maximum clamping gauge of 1.6 mm can only be guaranteed with original X-LOCK wheels.

Use of any other wheels may lead to insecure clamping, and cause the clamp tool to come loose.

CAUTION: Do not touch the X-LOCK wheel immediately after operation. It may be extremely hot and could burn your skin.

CAUTION: Make sure that the X-LOCK wheel and holder of the tool are not deformed and are free from dust or foreign matters.

CAUTION: Do not put your finger near the holder while installing or removing the X-LOCK wheel. It may pinch your finger.

⚠️ CAUTION: Do not put your finger near the release lever while installing the X-LOCK wheel. It may pinch your finger.

NOTE: No additional parts such as inner flanges or lock nuts are required to install or remove the X-LOCK wheels.

1. To install the X-LOCK wheel, make sure that both catches are in the unlocked position. If not, push the release lever from A side to lift B side, then pull the release lever from B side as illustrated. The catches are set in the unlocked position.

▶ Fig.16: 1. Catch 2. Release lever

1. Place a central position of the X-LOCK wheel on the holder. Make sure the X-LOCK wheel is parallel to the flange surface and with the correct side facing up.
2. Push the X-LOCK wheel into the holder. The catches snap into the lock position with a click and fix the X-LOCK wheel.

▶ Fig.17: 1. X-LOCK wheel 2. Holder 3. Flange surface 4. Catch
4. Make sure the X-LOCK wheel is fixed correctly. The surface of the X-LOCK wheel is no higher than the surface of the holder as shown in the figure. If not, the holder must be cleaned or the X-LOCK wheel must not be used.
▶ Fig.18: 1. Surface of the holder 2. Surface of the X-LOCK wheel

To remove the X-LOCK wheel, push the release lever from A side to lift B side, then pull the release lever from B side as illustrated.

The X-LOCK wheel is released and can be removed.

▶ Fig.19: 1. Release lever

Installing dust collecting wheel guard for cutting-off

Optional accessory

With optional accessories, you can use this tool for cutting stone materials.

▶ Fig.20

NOTE: For information how to install the dust collecting wheel guard, refer to the manual of the dust collecting wheel guard.

OPERATION

⚠ WARNING: It should never be necessary to force the tool. The weight of the tool applies adequate 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.
WARNING: Never actuate the release lever of the X-LOCK holder during operation. The X-LOCK wheel comes off from the tool and may cause serious injury.
WARNING: Make sure that the X-LOCK wheel is fixed firmly.

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 firmly with one hand on housing and the other on the side grip (handle).

Grinding and sanding operation

▶ Fig.21

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: 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 operated perpendicular to the material being cut.

Usage example: operation with abrasive cut-off wheel

▶ Fig.22

Usage example: operation with diamond wheel

▶ Fig.23

Operation with wire cup brush

Optional accessory

⚠️CAUTION: Check operation of brush by running tool with no load, insuring that no one is in front of or in line with 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.24

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.25

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.

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.26: 1. Exhaust vent 2. Inhalation vent

Remove the dust cover from inhalation vent and clean it for smooth air circulation.

▶ Fig.27: 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.

COMBINATION OF APPLICATIONS AND ACCESSORIES

Optional accessory

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

• When using a cut-off wheel guard for facial grinding, the wheel guard may interfere with the workpiece causing poor control.
• When using a grinding wheel guard for cutting-off operations with bonded abrasive wheels and diamond 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-off wheel guard or grinding wheel guard with a wheel-type wire brush with a thickness greater than the maximum thickness as specified in "SPECIFICATIONS", the wires may catch on the guard leading to breaking of wires.
  • Use of dust collecting wheel guards for cutting-off and facial operations in concrete or masonry reduces a risk of exposure to dust.

- Application	100 mm model 115 mm model	model 125 mm model
1 - Side grip
2 - Wheel guard (for grinding wheel)
3 Grinding / Sanding Depressed center wheel Depressed center wheel / Flap disc
4 Wire brushing - Wire wheel brush
5 Wire brushing Wire cup brush
6 - Wheel guard (for cut-off wheel)
7	Cutting-off	Abrasive cut-off wheel / Diamond wheel
8 -	Clip-on cutting wheel guard attachment *1
9 -	Dust collecting wheel guard for cutting-off *2
10 Cutting-off		Diamond wheel

NOTE: *1 Clip-on cutting wheel guard attachment is not available in some countries. For more details, refer to the instruction manual of the clip-on cutting wheel guard attachment.
NOTE: *2 For more details, refer to each instruction manual of the guard.

OPTIONAL ACCESSORIES

CAUTION: These accessories or attachments are recommended for use with your Makita tool specified 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
• Accessories listed in "COMBINATION OF APPLICATIONS AND ACCESSORIES"

NOTE: Some items in the list may be included in the tool package as standard accessories. They may differ from country to country.

SPÉCIFICATIONS

▶ Fig.27: 1. Pare-poussière

⚠ WAARSCHUWING: Draag gehoorbescherming.

VEILIGHEIDSWAAR- SCHUWINGEN

▶ Fig.27: 1. Stofrooster

OPTIONELE ACCESSOIRES