ENGLISH: Original instructions

INSTRUCTION MANUAL

Cordless Angle Grinder

DGA417
DGA418
DGA467
DGA468
DGA517
DGA518

Read before use.

 SPECIFICATIONS
Model: DGA417 DGA418 DGA467 DGA468 DGA517 DGA518
Applicable grinding wheel Max. wheel diameter 100 mm 115 mm 125 mm
Max. wheel thickness 6.4 mm 7.2 mm
Applicable cut-off wheel Max. wheel diameter 105 mm 115 mm 125 mm
Max. wheel thickness 3.2 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 specific)
Max. spindle length 18 mm 23 mm
No load speed (n0) / Rated speed (n) 8,500 min-1
Overall length with BL1840B 382 mm
Net weight 2.2 - 3.7 kg 2.4 - 3.9 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 heavi-
est 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.
Only for EU countries
Symbols Ni-MH
Li-ion Due to the presence of hazardous com-
ponents in the equipment, waste electrical
The followings show the symbols which may be used and electronic equipment, accumulators
for the equipment. Be sure that you understand their and batteries may have a negative impact
meaning before use. on the environment and human health.
Do not dispose of electrical and electronic
Read instruction manual. appliances or batteries with household
waste!
In accordance with the European Directive
on waste electrical and electronic equip-
Wear safety glasses. 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
Always operate with two hands. and delivered to a separate collection point
for municipal waste, operating in accor-
dance with the regulations on environmen-
tal protection.
Do not use the wheel guard for cut-off This is indicated by the symbol of the
operations. crossed-out wheeled bin placed on the
equipment.

2 ENGLISH
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 Sound power level Uncertainty (K) :
level (LpA) : (dB(A)) (LWA) : (dB(A)) (dB(A))
DGA417 83 91 3
DGA418 83 91 3
DGA467 83 91 3
DGA468 83 91 3
DGA517 83 91 3
DGA518 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 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 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 (ah, AG) : (m/s2) Uncertainty (K) : (m/s2)
DGA417 4.5 1.5
DGA418 4.5 1.5
DGA467 5.5 1.5
DGA468 5.5 1.5
DGA517 6.0 1.5
DGA518 6.0 1.5

Work mode: surface grinding with anti vibration side grip

Model Vibration emission (ah, AG) : (m/s2) Uncertainty (K) : (m/s2)
DGA417 4.5 1.5
DGA418 4.5 1.5
DGA467 5.0 1.5
DGA468 5.0 1.5
DGA517 5.5 1.5
DGA518 5.5 1.5

3 ENGLISH
Work mode: disc sanding with normal side grip
Model Vibration emission (ah, DS) : (m/s2) Uncertainty (K) : (m/s2)
DGA417 2.5 m/s2 or less 1.5
DGA418 2.5 m/s2 or less 1.5
DGA467 2.5 m/s2 or less 1.5
DGA468 2.5 m/s2 or less 1.5
DGA517 2.5 m/s2 or less 1.5
DGA518 2.5 m/s2 or less 1.5

Work mode: disc sanding with anti vibration side grip

Model Vibration emission (ah, DS) : (m/s2) Uncertainty (K) : (m/s2)
DGA417 2.5 m/s2 or less 1.5
DGA418 2.5 m/s2 or less 1.5
DGA467 2.5 m/s2 or less 1.5
DGA468 2.5 m/s2 or less 1.5
DGA517 2.5 m/s2 or less 1.5
DGA518 2.5 m/s2 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.

3. Keep children and bystanders away while operating

EC Declaration of Conformity a power tool. Distractions can cause you to lose control.
For European countries only Electrical safety
1. Power tool plugs must match the outlet. Never modify
The EC declaration of conformity is included as Annex A
the plug in any way. Do not use any adapter plugs with
to this instruction manual.
earthed (grounded) power tools. Unmodified plugs and
matching outlets will reduce risk of electric shock.
2. Avoid body contact with earthed or grounded
SAFETY WARNINGS surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of elec-
tric shock if your body is earthed or grounded.
General power tool safety warnings 3. Do not expose power tools to rain or wet con-
ditions. Water entering a power tool will increase
WARNING Read all safety warnings, instructions, the risk of electric shock.
illustrations and specifications provided with this 4. Do not abuse the cord. Never use the cord for
power tool. Failure to follow all instructions listed below carrying, pulling or unplugging the power tool.
may result in electric shock, fire and/or serious injury. Keep cord away from heat, oil, sharp edges
or moving parts. Damaged or entangled cords
Save all warnings and instruc- increase the risk of electric shock.
tions for future reference. 5. When operating a power tool outdoors, use an
The term "power tool" in the warnings refers to your mains-oper- extension cord suitable for outdoor use. Use of a cord
ated (corded) power tool or battery-operated (cordless) power tool. suitable for outdoor use reduces the risk of electric shock.
Work area safety 6. If operating a power tool in a damp location is unavoid-
able, use a residual current device (RCD) protected
1. Keep work area clean and well lit. Cluttered or supply. Use of an RCD reduces the risk of electric shock.
dark areas invite accidents.
7. Power tools can produce electromagnetic fields
2. Do not operate power tools in explosive atmo- (EMF) that are not harmful to the user. However,
spheres, such as in the presence of flammable users of pacemakers and other similar medical
liquids, gases or dust. Power tools create sparks devices should contact the maker of their device and/
which may ignite the dust or fumes. or doctor for advice before operating this power tool.
4 ENGLISH
Personal safety Power tool use and care
1. Stay alert, watch what you are doing and use 1. Do not force the power tool. Use the correct
common sense when operating a power tool. power tool for your application. The correct
Do not use a power tool while you are tired or power tool will do the job better and safer at the
under the influence of drugs, alcohol or med- rate for which it was designed.
ication. A moment of inattention while operating 2. Do not use the power tool if the switch does
power tools may result in serious personal injury. not turn it on and off. Any power tool that cannot
2. Use personal protective equipment. Always be controlled with the switch is dangerous and
wear eye protection. Protective equipment such must be repaired.
as a dust mask, non-skid safety shoes, hard hat or 3. Disconnect the plug from the power source
hearing protection used for appropriate conditions and/or remove the battery pack, if detachable,
will reduce personal injuries. from the power tool before making any adjust-
3. Prevent unintentional starting. Ensure the ments, changing accessories, or storing power
switch is in the off-position before connecting tools. Such preventive safety measures reduce
to power source and/or battery pack, picking the risk of starting the power tool accidentally.
up or carrying the tool. Carrying power tools with 4. Store idle power tools out of the reach of chil-
your finger on the switch or energising power tools dren and do not allow persons unfamiliar with
that have the switch on invites accidents. the power tool or these instructions to operate
4. Remove any adjusting key or wrench before the power tool. Power tools are dangerous in the
turning the power tool on. A wrench or a key left hands of untrained users.
attached to a rotating part of the power tool may 5. Maintain power tools and accessories. Check
result in personal injury. for misalignment or binding of moving parts,
5. Do not overreach. Keep proper footing and breakage of parts and any other condition that
balance at all times. This enables better control may affect the power tool’s operation. If dam-
of the power tool in unexpected situations. aged, have the power tool repaired before use.
6. Dress properly. Do not wear loose clothing or Many accidents are caused by poorly maintained
jewellery. Keep your hair and clothing away power tools.
from moving parts. Loose clothes, jewellery or 6. Keep cutting tools sharp and clean. Properly
long hair can be caught in moving parts. maintained cutting tools with sharp cutting edges
7. If devices are provided for the connection of are less likely to bind and are easier to control.
dust extraction and collection facilities, ensure 7. Use the power tool, accessories and tool bits
these are connected and properly used. Use of etc. in accordance with these instructions, tak-
dust collection can reduce dust-related hazards. ing into account the working conditions and
8. Do not let familiarity gained from frequent use the work to be performed. Use of the power tool
of tools allow you to become complacent and for operations different from those intended could
ignore tool safety principles. A careless action result in a hazardous situation.
can cause severe injury within a fraction of a 8. Keep handles and grasping surfaces dry,
second. clean and free from oil and grease. Slippery
9. Always wear protective goggles to protect handles and grasping surfaces do not allow for
your eyes from injury when using power tools. safe handling and control of the tool in unexpected
The goggles must comply with ANSI Z87.1 in situations.
the USA, EN 166 in Europe, or AS/NZS 1336 9. When using the tool, do not wear cloth work
in Australia/New Zealand. In Australia/New gloves which may be entangled. The entangle-
Zealand, it is legally required to wear a face ment of cloth work gloves in the moving parts may
shield to protect your face, too. result in personal injury.
Battery tool use and care
1. Recharge only with the charger specified by
the manufacturer. A charger that is suitable for
one type of battery pack may create a risk of fire
when used with another battery pack.
2. Use power tools only with specifically desig-
nated battery packs. Use of any other battery
packs may create a risk of injury and fire.
3. When battery pack is not in use, keep it away
from other metal objects, like paper clips,
coins, keys, nails, screws or other small metal
objects, that can make a connection from one
terminal to another. Shorting the battery termi-
nals together may cause burns or a fire.
It is an employer's responsibility to enforce 4. Under abusive conditions, liquid may be
the use of appropriate safety protective equip- ejected from the battery; avoid contact. If con-
ments by the tool operators and by other per- tact accidentally occurs, flush with water. If
sons in the immediate working area. liquid contacts eyes, additionally seek medical
help. Liquid ejected from the battery may cause
irritation or burns.
5 ENGLISH
5. Do not use a battery pack or tool that is dam- 8. Do not use a damaged accessory. Before each use
aged or modified. Damaged or modified batteries inspect the accessory such as abrasive wheels for
may exhibit unpredictable behaviour resulting in chips and cracks, backing pad for cracks, tear or
fire, explosion or risk of injury. excess wear, wire brush for loose or cracked wires.
6. Do not expose a battery pack or tool to fire or If power tool or accessory is dropped, inspect for
excessive temperature. Exposure to fire or tem- damage or install an undamaged accessory. After
perature above 130 °C may cause explosion. inspecting and installing an accessory, position
7. Follow all charging instructions and do not yourself and bystanders away from the plane of the
charge the battery pack or tool outside the rotating accessory and run the power tool at maxi-
temperature range specified in the instruc- mum no-load speed for one minute. Damaged acces-
tions. Charging improperly or at temperatures sories will normally break apart during this test time.
outside the specified range may damage the 9. Wear personal protective equipment. Depending on
battery and increase the risk of fire. application, use face shield, safety goggles or safety
glasses. As appropriate, wear dust mask, hearing
Service
protectors, gloves and workshop apron capable of
1. Have your power tool serviced by a qualified stopping small abrasive or workpiece fragments.
repair person using only identical replacement The eye protection must be capable of stopping flying
parts. This will ensure that the safety of the power debris generated by various applications. The dust mask
tool is maintained. or respirator must be capable of filtrating particles gener-
2. Never service damaged battery packs. Service ated by the particular application. Prolonged exposure to
of battery packs should only be performed by the high intensity noise may cause hearing loss.
manufacturer or authorized service providers. 10. Keep bystanders a safe distance away from work
3. Follow instruction for lubricating and chang- area. Anyone entering the work area must wear
ing accessories. personal protective equipment. Fragments of
workpiece or of a broken accessory may fly away and
Cordless grinder safety warnings cause injury beyond immediate area of operation.
11. Hold the power tool by insulated gripping
Safety warnings common for grinding, sanding, surfaces only, when performing an operation
wire brushing, or cutting-off operations: where the cutting tool may contact hidden
1. This power tool is intended to function as a wiring. Contact with a "live" wire will also make
grinder, sander, wire brush, hole cutter or cut- exposed metal parts of the power tool "live" and
off tool. Read all safety warnings, instructions, could give the operator an electric shock.
illustrations and specifications provided with 12. Never lay the power tool down until the acces-
this power tool. Failure to follow all instructions sory has come to a complete stop. The spinning
listed below may result in electric shock, fire and/ accessory may grab the surface and pull the
or serious injury. power tool out of your control.
2. Operations such as polishing are not to be 13. Do not run the power tool while carrying it at
performed with this power tool. Operations for your side. Accidental contact with the spinning
which the power tool was not designed may create accessory could snag your clothing, pulling the
a hazard and cause personal injury. accessory into your body.
3. Do not convert this power tool to operate in 14. Regularly clean the power tool’s air vents. The
a way which is not specifically designed and motor’s fan will draw the dust inside the housing
specified by the tool manufacturer. Such a con- and excessive accumulation of powdered metal
version may result in a loss of control and cause may cause electrical hazards.
serious personal injury.
15. Do not operate the power tool near flammable
4. Do not use accessories which are not spe- materials. Sparks could ignite these materials.
cifically designed and specified by the tool
16. Do not use accessories that require liquid
manufacturer. Just because the accessory can
coolants. Using water or other liquid coolants
be attached to your power tool, it does not assure
may result in electrocution or shock.
safe operation.
5. The rated speed of the accessory must be at Kickback and related warnings:
least equal to the maximum speed marked on Kickback is a sudden reaction to a pinched or snagged
the power tool. Accessories running faster than rotating wheel, backing pad, brush or any other acces-
their rated speed can break and fly apart. sory. Pinching or snagging causes rapid stalling of the
rotating accessory which in turn causes the uncon-
6. The outside diameter and the thickness of your
trolled power tool to be forced in the direction opposite
accessory must be within the capacity rating
of the accessory’s rotation at the point of the binding.
of your power tool. Incorrectly sized accessories
For example, if an abrasive wheel is snagged or pinched
cannot be adequately guarded or controlled.
by the workpiece, the edge of the wheel that is entering into
7. The dimensions of the accessory mounting the pinch point can dig into the surface of the material caus-
must fit the dimensions of the mounting hard- ing the wheel to climb out or kick out. The wheel may either
ware of the power tool. Accessories that do not jump toward or away from the operator, depending on
match the mounting hardware of the power tool direction of the wheel’s movement at the point of pinching.
will run out of balance, vibrate excessively and Abrasive wheels may also break under these conditions.
may cause loss of control. 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.
6 ENGLISH
1. Maintain a firm grip with both hands on the Additional safety warnings specific for cutting-off
power tool and position your body and arms operations:
to allow you to resist kickback forces. Always 1. Do not “jam” the cut-off wheel or apply exces-
use auxiliary handle, if provided, for maxi- sive pressure. Do not attempt to make an
mum control over kickback or torque reaction excessive depth of cut. Overstressing the wheel
during start-up. The operator can control torque increases the loading and susceptibility to twisting
reactions or kickback forces, if proper precautions or binding of the wheel in the cut and the possibil-
are taken. ity of kickback or wheel breakage.
2. Never place your hand near the rotating acces- 2. Do not position your body in line with and
sory. Accessory may kickback over your hand. behind the rotating wheel. When the wheel, at
3. Do not position your body in the area where the point of operation, is moving away from your
power tool will move if kickback occurs. body, the possible kickback may propel the spin-
Kickback will propel the tool in direction opposite ning wheel and the power tool directly at you.
to the wheel’s movement at the point of snagging. 3. When the wheel is binding or when interrupt-
4. Use special care when working corners, sharp ing a cut for any reason, switch off the power
edges, etc. Avoid bouncing and snagging the tool and hold it motionless until the wheel
accessory. Corners, sharp edges or bouncing comes to a complete stop. Never attempt to
have a tendency to snag the rotating accessory remove the cut-off wheel from the cut while
and cause loss of control or kickback. the wheel is in motion otherwise kickback may
5. Do not attach a saw chain woodcarving blade, occur. Investigate and take corrective action to
segmented diamond wheel with a peripheral eliminate the cause of wheel binding.
gap greater than 10 mm or toothed saw blade. 4. Do not restart the cutting operation in the
Such blades create frequent kickback and loss of workpiece. Let the wheel reach full speed and
control. carefully re-enter the cut. The wheel may bind,
Safety warnings specific for grinding and cutting-off walk up or kickback if the power tool is restarted in
operations: the workpiece.
1. Use only wheel types that are specified 5. Support panels or any oversized workpiece to
for your power tool and the specific guard minimize the risk of wheel pinching and kick-
designed for the selected wheel. Wheels for back. Large workpieces tend to sag under their
which the power tool was not designed cannot be own weight. Supports must be placed under the
adequately guarded and are unsafe. workpiece near the line of cut and near the edge
of the workpiece on both sides of the wheel.
2. The grinding surface of centre depressed
wheels must be mounted below the plane of 6. Use extra caution when making a “pocket cut”
the guard lip. An improperly mounted wheel that into existing walls or other blind areas. The
projects through the plane of the guard lip cannot protruding wheel may cut gas or water pipes, elec-
be adequately protected. trical wiring or objects that can cause kickback.
3. The guard must be securely attached to the 7. Do not attempt to do curved cutting.
power tool and positioned for maximum safety, Overstressing the wheel increases the loading and
so the least amount of wheel is exposed susceptibility to twisting or binding of the wheel
towards the operator. The guard helps to protect in the cut and the possibility of kickback or wheel
the operator from broken wheel fragments, acci- breakage, which can lead to serious injury.
dental contact with wheel and sparks that could 8. Before using a segmented diamond wheel,
ignite clothing. make sure that the diamond wheel has the
4. Wheels must be used only for specified appli- peripheral gap between segments of 10 mm or
cations. For example: do not grind with the less, only with a negative rake angle.
side of cut-off wheel. Abrasive cut-off wheels Safety warnings specific for sanding operations:
are intended for peripheral grinding, side forces 1. Use proper sized sanding disc paper. Follow
applied to these wheels may cause them to manufacturers recommendations, when
shatter. selecting sanding paper. Larger sanding paper
5. Always use undamaged wheel flanges that are extending too far beyond the sanding pad pres-
of correct size and shape for your selected ents a laceration hazard and may cause snagging,
wheel. Proper wheel flanges support the wheel tearing of the disc or kickback.
thus reducing the possibility of wheel breakage. Safety warnings specific for wire brushing
Flanges for cut-off wheels may be different from operations:
grinding wheel flanges.
1. Be aware that wire bristles are thrown by the
6. Do not use worn down wheels from larger brush even during ordinary operation. Do not
power tools. A wheel intended for larger power overstress the wires by applying excessive
tool is not suitable for the higher speed of a load to the brush. The wire bristles can easily
smaller tool and may burst. penetrate light clothing and/or skin.
7. When using dual purpose wheels always use 2. If the use of a guard is specified for wire
the correct guard for the application being brushing, do not allow any interference of the
performed. Failure to use the correct guard may wire wheel or brush with the guard. Wire wheel
not provide the desired level of guarding, which or brush may expand in diameter due to work load
could lead to serious injury. and centrifugal forces.

7 ENGLISH
Additional Safety Warnings: 23. Before installing a grinding wheel, always
1. When using depressed centre grinding wheels, check that the blotter part does not have any
be sure to use only fiberglass-reinforced abnormalities such as chips or cracks.
wheels. 24. Tighten the lock nut properly. Overtightening
2. NEVER USE Stone Cup type wheels with this the wheel can cause breakage and insufficient
grinder. This grinder is not designed for these tightening can cause fluttering.
types of wheels and the use of such a product
may result in serious personal injury. SAVE THESE INSTRUCTIONS.
3. Be careful not to damage the spindle, the
WARNING: DO NOT let comfort or familiarity
flange (especially the installing surface) or the
with product (gained from repeated use) replace
lock nut. Damage to these parts could result in
strict adherence to safety rules for the subject
wheel breakage.
product. MISUSE or failure to follow the safety
4. Make sure the wheel is not contacting the rules stated in this instruction manual may cause
workpiece before the switch is turned on. serious personal injury.
5. Before using the tool on an actual workpiece,
let it run for a while. Watch for vibration or Important safety instructions for
wobbling that could indicate poor installation
or a poorly balanced wheel. battery cartridge
6. Use the specified surface of the wheel to per-
1. Before using battery cartridge, read all instruc-
form the grinding.
tions and cautionary markings on (1) battery
7. Do not leave the tool running. Operate the tool charger, (2) battery, and (3) product using battery.
only when hand-held.
2. Do not disassemble or tamper with the battery
8. Do not touch the workpiece immediately after cartridge. It may result in a fire, excessive heat,
operation; it may be extremely hot and could or explosion.
burn your skin.
3. If operating time has become excessively
9. Do not touch accessories immediately after shorter, stop operating immediately. It may
operation; it may be extremely hot and could result in a risk of overheating, possible burns
burn your skin. and even an explosion.
10. Observe the instructions of the manufacturer 4. If electrolyte gets into your eyes, rinse them out
for correct mounting and use of wheels. with clear water and seek medical attention right
Handle and store wheels with care. away. It may result in loss of your eyesight.
11. Do not use separate reducing bushings or 5. Do not short the battery cartridge:
adaptors to adapt large hole abrasive wheels.
(1) Do not touch the terminals with any con-
12. Use only flanges specified for this tool. ductive material.
13. For tools intended to be fitted with threaded (2) Avoid storing battery cartridge in a con-
hole wheel, ensure that the thread in the wheel tainer with other metal objects such as
is long enough to accept the spindle length. nails, coins, etc.
14. Check that the workpiece is properly (3) Do not expose battery cartridge to water
supported. or rain.
15. Pay attention that the wheel continues to A battery short can cause a large current
rotate after the tool is switched off. flow, overheating, possible burns and even a
16. If working place is extremely hot and humid, breakdown.
or badly polluted by conductive dust, use a 6. Do not store and use the tool and battery car-
short-circuit breaker (30 mA) to assure opera- tridge in locations where the temperature may
tor safety. reach or exceed 50 °C (122 °F).
17. Do not use the tool on any materials contain- 7. Do not incinerate the battery cartridge even if
ing asbestos. it is severely damaged or is completely worn
18. When use cut-off wheel, always work with out. The battery cartridge can explode in a fire.
the dust collecting wheel guard if required by 8. Do not nail, cut, crush, throw, drop the battery
domestic regulation. cartridge, or hit against a hard object to the
19. Cutting discs must not be subjected to any battery cartridge. Such conduct may result in a
lateral pressure. fire, excessive heat, or explosion.
20. Do not use cloth work gloves during operation. 9. Do not use a damaged battery.
Fibers from cloth gloves may enter the tool, which 10. The contained lithium-ion batteries are subject to
causes tool breakage. the Dangerous Goods Legislation requirements.
21. Before operation, make sure that there is no For commercial transports e.g. by third parties,
buried object such as electric pipe, water pipe or forwarding agents, special requirement on pack-
gas pipe in the workpiece. Otherwise, it may cause aging and labeling must be observed.
an electric shock, electrical leakage or gas leak. For preparation of the item being shipped, consulting an
22. If a blotter is attached to the wheel, do not expert for hazardous material is required. Please also
remove it. The diameter of the blotter must be observe possibly more detailed national regulations.
larger than the lock nut, outer flange, and inner Tape or mask off open contacts and pack up the
flange. battery in such a manner that it cannot move
around in the packaging.
8 ENGLISH
11. When disposing the battery cartridge, remove it from 6. Do not operate the wireless unit in places
the tool and dispose of it in a safe place. Follow your where medical instruments, such as heart
local regulations relating to disposal of battery. pace makers are nearby.
12. Use the batteries only with the products 7. Do not operate the wireless unit in places
specified by Makita. Installing the batteries to where automated devices are nearby. If oper-
non-compliant products may result in a fire, exces- ated, automated devices may develop malfunction
sive heat, explosion, or leak of electrolyte. or error.
13. If the tool is not used for a long period of time, 8. Do not operate the wireless unit in places
the battery must be removed from the tool. under high temperature or places where
14. During and after use, the battery cartridge may static electricity or electrical noise could be
take on heat which can cause burns or low generated.
temperature burns. Pay attention to the han- 9. The wireless unit can produce electromagnetic
dling of hot battery cartridges. fields (EMF) but they are not harmful to the
15. Do not touch the terminal of the tool immediately user.
after use as it may get hot enough to cause burns. 10. The wireless unit is an accurate instrument. Be
16. Do not allow chips, dust, or soil stuck into the careful not to drop or strike the wireless unit.
terminals, holes, and grooves of the battery 11. Avoid touching the terminal of the wireless
cartridge. It may cause heating, catching fire, unit with bare hands or metallic materials.
burst and malfunction of the tool or battery car- 12. Always remove the battery on the product
tridge, resulting in burns or personal injury. when installing the wireless unit into it.
17. Unless the tool supports the use near 13. When opening the lid of the slot, avoid the
high-voltage electrical power lines, do not use place where dust and water may come into the
the battery cartridge near high-voltage electri- slot. Always keep the inlet of the slot clean.
cal power lines. It may result in a malfunction or 14. Always insert the wireless unit in the correct
breakdown of the tool or battery cartridge. direction.
18. Keep the battery away from children. 15. Do not press the wireless activation button
SAVE THESE INSTRUCTIONS. on the wireless unit too hard and/or press the
button with an object with a sharp edge.
CAUTION: Only use genuine Makita batteries. 16. Always close the lid of the slot when
Use of non-genuine Makita batteries, or batteries that operating.
have been altered, may result in the battery bursting 17. Do not remove the wireless unit from the slot
causing fires, personal injury and damage. It will also while the power is being supplied to the tool.
void the Makita warranty for the Makita tool and charger. Doing so may cause a malfunction of the wireless unit.
18. Do not remove the sticker on the wireless unit.
Tips for maintaining maximum 19. Do not put any sticker on the wireless unit.
battery life 20. Do not leave the wireless unit in a place where
1. Charge the battery cartridge before completely static electricity or electrical noise could be
discharged. Always stop tool operation and generated.
charge the battery cartridge when you notice 21. Do not leave the wireless unit in a place sub-
less tool power. ject to high heat, such as a car sitting in the
2. Never recharge a fully charged battery cartridge. sun.
Overcharging shortens the battery service life. 22. Do not leave the wireless unit in a dusty or
3. Charge the battery cartridge with room tempera- powdery place or in a place corrosive gas
ture at 10 °C - 40 °C (50 °F - 104 °F). Let a hot could be generated.
battery cartridge cool down before charging it. 23. Sudden change of the temperature may bedew
4. When not using the battery cartridge, remove the wireless unit. Do not use the wireless unit
it from the tool or the charger. until the dew is completely dried.
5. Charge the battery cartridge if you do not use 24. When cleaning the wireless unit, gently wipe
it for a long period (more than six months). with a dry soft cloth. Do not use benzine, thin-
ner, conductive grease or the like.
Important safety instructions for 25. When storing the wireless unit, keep it in the
supplied case or a static-free container.
wireless unit
26. Do not insert any devices other than Makita
1. Do not disassemble or tamper with the wire- wireless unit into the slot on the tool.
less unit. 27. Do not use the tool with the lid of the slot dam-
2. Keep the wireless unit away from young chil- aged. Water, dust, and dirt come into the slot may
dren. If accidentally swallowed, seek medical cause malfunction.
attention immediately. 28. Do not pull and/or twist the lid of the slot more
3. Use the wireless unit only with Makita tools. than necessary. Restore the lid if it comes off
4. Do not expose the wireless unit to rain or wet from the tool.
conditions. 29. Replace the lid of the slot if it is lost or
5. Do not use the wireless unit in places where damaged.
the temperature exceeds 50 °C (122 °F). SAVE THESE INSTRUCTIONS.
9 ENGLISH
FUNCTIONAL Indicating the remaining battery
capacity
DESCRIPTION
Only for battery cartridges with the indicator
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 1

cartridge

CAUTION: Always switch off the tool before 2

installing or removing of the battery cartridge.
CAUTION: Hold the tool and the battery car-
tridge firmly when installing or removing battery
cartridge. Failure to hold the tool and the battery Fig.2
cartridge firmly may cause them to slip off your hands ► 1.
‌ Indicator lamps 2. Check button
and result in damage to the tool and battery cartridge
and a personal injury. Press the check button on the battery cartridge to indi-
cate the remaining battery capacity. The indicator lamps
light up for a few seconds.
2
Indicator lamps Remaining
capacity
1
Lighted Off Blinking
75% to 100%

50% to 75%

3 25% to 50%

Fig.1 0% to 25%
► 1.
‌ Red indicator 2. Button 3. Battery cartridge
Charge the
To remove the battery cartridge, slide it from the tool battery.
while sliding the button on the front of the cartridge. The battery
To install the battery cartridge, align the tongue on the may have
battery cartridge with the groove in the housing and slip malfunctioned.
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.
NOTE: Depending on the conditions of use and the
CAUTION: Always install the battery cartridge ambient temperature, the indication may differ slightly
fully until the red indicator cannot be seen. If not, from the actual capacity.
it may accidentally fall out of the tool, causing injury to NOTE: The first (far left) indicator lamp will blink when
you or someone around you. the battery protection system works.
CAUTION: Do not install the battery cartridge
forcibly. If the cartridge does not slide in easily, it is
not being inserted correctly.

10 ENGLISH
Indicating the remaining battery Overheat protection
capacity When the tool is overheated, the tool stops automati-
cally and the battery indicator shows following state. In
Country specific this situation, let the tool cool before turning the tool on
again.
When you turn the tool on, the battery indicator shows
the remaining battery capacity.
On Blinking
1

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.
Fig.3
► 1.
‌ Battery indicator Releasing protection lock
The remaining battery capacity is shown as the follow- When the protection system works repeatedly, the tool
ing table. is locked and the battery indicator shows the following
state.
Battery indicator status Remaining
In this situation, the tool does not start even if turning
battery
capacity the tool off and on. To release the protection lock,
On Off Blinking remove the battery, set it to the battery charger and wait
until the charging finishes.
50% to 100%

On Off Blinking
20% to 50%

0% to 20%
Protections against other causes
Protection system is also designed for other causes
Charge the that could damage the tool and allows the tool to stop
battery
automatically. Take all the following steps to clear the
causes, when the tool has been brought to a temporary
halt or stop in operation.
Tool / battery protection system 1. Turn the tool off, and then turn it on again to
restart.
The tool is equipped with a tool/battery protection sys- 2. Charge the battery(ies) or replace it/them with
tem. This system automatically cuts off power to the recharged battery(ies).
motor to extend tool and battery life. The tool will auto- 3. Let the tool and battery(ies) cool down.
matically stop during operation if the tool or battery is
placed under one of the following conditions: If no improvement can be found by restoring protection
system, then contact your local Makita Service Center.
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.

11 ENGLISH
Shaft lock Speed adjusting dial
The rotation speed of the tool can be changed by turning
WARNING: Never actuate the shaft lock when the the speed adjusting dial. The table below shows the num-
spindle is moving. It may cause serious injury or the tool damage.
ber on the dial and the corresponding rotation speed.
Press the shaft lock to prevent spindle rotation when
installing or removing accessories.

Fig.6
► 1.
‌ Speed adjusting dial
Fig.4
► 1.
‌ Shaft lock Number Speed
1 3,000 min-1
Switch action 2 4,500 min-1
3 6,000 min-1
CAUTION: Before installing the battery car- 4 7,500 min-1
tridge into the tool, always check to see that the
5 8,500 min-1
switch lever actuates properly and returns to the
"OFF" position when released.
NOTICE: If the tool is operated continuously at
CAUTION: For your safety, this tool is low speed for a long time, the motor will get over-
equipped with lock-off lever which prevents the loaded, resulting in tool malfunction.
tool from unintended starting. NEVER use the tool
NOTICE: The speed adjusting dial can be turned
if it runs when you simply pull the switch lever
only as far as 5 and back to 1. Do not force it past
without pulling the lock-off lever. Return the tool
5 or 1, or the speed adjusting function may no
to our authorized service center for proper repairs
longer work.
BEFORE further usage.
CAUTION: Do not pull the switch lever hard Automatic speed change function
without pulling the lock-off lever. This can cause
switch breakage.
CAUTION: NEVER tape down or defeat pur-
pose and function of lock-off lever.
1

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 opera-
tor and then pull the switch lever.
To stop the tool, release the switch lever.

Fig.7
► 1.
‌ Mode indicator

Mode indicator status Operation mode

High speed mode

1
2 High torque mode
Fig.5
► 1.
‌ Lock-off lever 2. Switch lever

12 ENGLISH
This tool has "high speed mode" and "high torque
mode". It automatically changes operation mode
Installing or removing wheel guard
depending on the work load. When mode indicator (For depressed center wheel, flap disc,
lights up during operation, the tool is in high torque flex wheel, wire wheel brush / abrasive
mode.
cut-off wheel, diamond wheel)
Accidental re-start preventive function
WARNING: When using a depressed center
When installing the battery cartridge while the switch is wheel, flap disc, flex wheel or wire wheel brush,
ON, the tool does not start. the wheel guard must be fitted on the tool so that
To start the tool, turn off the switch, and turn it on again. the closed side of the guard always points toward
the operator.
Active Feedback sensing
Technology 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.
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 For tool with locking screw type
further rotation of the spindle (it does not prevent
kickback).
wheel guard
To restart the tool, switch off the tool first, remove the Mount the wheel guard with the protrusions on the
cause of sudden drop in the rotation speed, and then wheel guard band aligned with the notches on the bear-
turn the tool on. ing box. Then rotate the wheel guard to such an angle
that it can protect the operator according to work. Be
Soft start feature sure to tighten the screw securely.
To remove wheel guard, follow the installation proce-
Soft start feature reduces starting reaction. dure in reverse.

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.

1
ASSEMBLY
2
CAUTION: Always be sure that the tool is 3
switched off and the battery cartridge is removed Fig.9
before adjusting or checking function on the tool. ► 1.
‌ Wheel guard 2. Bearing box 3. Screw

Installing side grip (handle) For tool with clamp lever type wheel guard
Loosen the screw, and then pull the lever in the direction
CAUTION: Always be sure that the side grip is
of the arrow. Mount the wheel guard with the protrusions
installed securely before operation.
on the wheel guard band aligned with the notches on
Screw the side grip securely on the position of the tool the bearing box. Then rotate the wheel guard to such an
as shown in the figure. angle that it can protect the operator according to work.

1
3

2
Fig.10 4
Fig.8
► 1.
‌ Wheel guard 2. Bearing box 3. Screw 4. Lever

13 ENGLISH
Pull the lever in direction of the arrow. Then tighten the
wheel guard with fastening the screw. Be sure to tighten
Installing or removing depressed
the screw securely. The setting angle of the wheel center wheel or flap disc
guard can be adjusted with the lever.
Optional accessory
2
WARNING: When using a depressed center
1 wheel or flap disc, 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 mounting part
of the inner flange fits into the inner diameter of
the depressed center wheel / flap disc perfectly.
Mounting the inner flange on the wrong side may
result in the dangerous vibration.

Mount the inner flange onto the spindle.

Make sure to fit the dented part of the inner flange onto
Fig.11
the straight part at the bottom of the spindle.
► 1.
‌ Screw 2. Lever Fit the depressed center wheel / flap disc on the inner
flange and screw the lock nut onto the spindle.
To remove wheel guard, follow the installation proce-
dure in reverse.

Clip-on cutting wheel guard 1

attachment 4
Optional accessory 2
NOTE: For cutting-off operations, a clip-on cutting 3
wheel guard attachment can be used with the wheel
guard (for grinding wheel).
Not available in some countries.

Fig.13
► 1.
‌ Lock nut 2. Depressed center wheel 3. Inner
flange 4. Mounting part

To tighten the lock nut, press the shaft lock firmly so

that the spindle cannot revolve, then use the lock nut
wrench and securely tighten clockwise.

Fig.12

2
Fig.14
► 1.
‌ Lock nut wrench 2. Shaft lock

To remove the wheel, follow the installation procedure

in reverse.

14 ENGLISH
Installing or removing flex wheel For model other than 100 mm (4″)
Optional accessory

WARNING: Always use supplied guard when 1

flex wheel is on the tool. Wheel can shatter during
use and guard helps to reduce chances of personal 2
injury.
3
1

Fig.17
3
► 1.
‌ Sanding lock nut 2. Abrasive disc 3. Rubber pad
4
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.
Fig.15 3. Hold the spindle with the shaft lock, and securely tighten
the sanding lock nut clockwise with the lock nut wrench.
► 1.
‌ Lock nut 2. Flex wheel 3. Back up pad 4. Inner
flange To remove the disc, follow the installation procedure in reverse.

Follow instructions for depressed center wheel but also Installing or removing Ezynut
use back up pad over wheel.
Optional accessory
Installing or removing abrasive disc Only for tools with M14 spindle thread.
Mount inner flange, abrasive wheel and Ezynut onto the
Optional accessory spindle so that Makita Logo on Ezynut faces outside.
NOTE: Use sander accessories specified in this man-
ual. These must be purchased separately.
1
For 100 mm (4″) model 2

1
3

2 4

4
Fig.18
► ‌1. Ezynut 2. Abrasive wheel 3. Inner flange 4. Spindle

Press shaft lock firmly and tighten Ezynut by turning the

abrasive wheel clockwise as far as it turns.
Fig.16
► 1.
‌ Sanding lock nut 2. Abrasive disc 3. Rubber pad
4. Inner flange

1. Mount the inner flange 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 1
reverse. Fig.19
► 1.
‌ Shaft lock

15 ENGLISH
To loosen the Ezynut, turn the outside ring of Ezynut As for the installation, follow the instructions for
counterclockwise. depressed center wheel.
The direction for mounting the lock nut and the inner
NOTE: Ezynut can be loosened by hand as long
flange varies by wheel type and thickness.
as the arrow points the notch. Otherwise a lock nut
Refer to the following figures.
wrench is required to loosen it. Insert one pin of the
wrench into a hole and turn Ezynut counterclockwise.
For 100 mm (4″) model
When installing the abrasive cut-off wheel:
1 2
1 1

2 3

16 mm (5/8″) 16 mm (5/8″)
4 4
Fig.20
► 1.
‌ Arrow 2. Notch
Fig.23
► ‌1. Lock nut 2. Abrasive cut-off wheel (Thinner than 4 mm (5/32"))
3. Abrasive cut-off wheel (4 mm (5/32") or thicker) 4. Inner flange

When installing the diamond wheel:

1 1

2 3

Fig.21
4 4
Installing abrasive cut-off / diamond wheel
Optional accessory Fig.24
► 1.
‌ Lock nut 2. Diamond wheel (Thinner than 4 mm (5/32″))
WARNING: When using an abrasive cut-off 3. Diamond wheel (4 mm (5/32″) or thicker) 4. Inner flange
/ 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 For model other than 100 mm (4″)
grinding.
When installing the abrasive cut-off wheel:

1 1 1

2 3
2

4
4 4

Fig.22 Fig.25
► 1.
‌ Lock nut 2. Abrasive cut-off wheel / diamond ► 1.
‌ Lock nut 2. Abrasive cut-off wheel (Thinner than 4
wheel 3. Inner flange 4. Wheel guard for abrasive mm (5/32")) 3. Abrasive cut-off wheel (4 mm (5/32")
cut-off wheel / diamond wheel or thicker) 4. Inner flange

16 ENGLISH
When installing the diamond wheel:
Installing wire wheel brush
1 1 Optional accessory

CAUTION: Do not use wire wheel brush that

2 3 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
4 4
guard helps to reduce chances of personal injury.

Place the tool upside down to allow easy access to the

Fig.26 spindle.
► 1.
‌ Lock nut 2. Diamond wheel (Thinner than 4 mm Remove any accessories on spindle. Thread wire wheel
(5/32″)) 3. Diamond wheel (4 mm (5/32″) or thicker) brush onto spindle and tighten with the wrenches.
4. Inner flange

Installing wire cup brush

Optional accessory 1

CAUTION: Do not use brush that is damaged,

or which is out of balance. Use of damaged brush
could increase potential for injury from contact with
broken brush wires.

Place the tool upside down to allow easy access to the

spindle.
Remove any accessories on spindle. Thread wire cup Fig.28
brush onto spindle and tighten with supplied wrench. ► 1.
‌ Wire wheel brush

Installing hole cutter

Optional accessory
Place the tool upside down to allow easy access to the
1 spindle.
Remove any accessories on the spindle. Thread the
hole cutter onto the spindle, and tighten it with the sup-
plied wrench.

Fig.27
► 1.
‌ Wire cup brush
1

Fig.29
► 1.
‌ Hole cutter

17 ENGLISH
Installing dust collecting wheel Installing dust collecting wheel
guard for grinding guard for cutting-off
Only for model DGA467 / DGA468 / DGA517 / Optional accessory
DGA518 With optional accessories, you can use this tool for
Optional accessory cutting stone materials.
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. Fig.31
Mount the inner flange onto the spindle.
Fit the cup-type diamond wheel on the inner flange and NOTE: For information how to install the dust col-
tighten the lock nut onto the spindle. lecting wheel guard, refer to the manual of the dust
collecting wheel guard.

1 3 Connecting a vacuum cleaner

2
Optional accessory
4 WARNING: Never vacuum metal particles
created by grinding/cutting/sanding operation.
Metal particles created by such operation are so hot
that they ignite dust and the filter inside the vacuum
5 cleaner.

To avoid dusty environment caused by masonry cut-

ting, use a dust collecting wheel guard and a vacuum
6 cleaner.
Refer to the instruction manual attached to the dust
collecting wheel guard for assembling and using it.
Fig.30
► 1.
‌ Lock nut 2. Cup-type diamond wheel 3. Hubbed
cup-type diamond wheel 4. Inner flange 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. 2

1
Fig.32
► 1.
‌ Dust collecting wheel guard 2. Hose of the vac-
uum cleaner

18 ENGLISH
 Usage example: operation with cup-type diamond
OPERATION wheel

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 Fig.34
blades and other saw blades. Such blades when
used on a grinder frequently kick and cause loss of Keep the tool horizontally and apply the entire cup-type
control leading to personal injury. diamond wheel to the workpiece surface.

Operation with abrasive cut-off /

CAUTION: Never switch on the tool when it
is in contact with the workpiece, it may cause an diamond wheel
injury to operator.
Optional accessory
CAUTION: Always wear safety goggles or a
face shield during operation. WARNING: Do not "jam" the wheel or apply
CAUTION: After operation, always switch off excessive pressure. Do not attempt to make an
the tool and wait until the wheel has come to a excessive depth of cut. Overstressing the wheel
complete stop before putting the tool down. increases the loading and susceptibility to twisting
or binding of the wheel in the cut and the possibility
CAUTION: ALWAYS hold the tool firmly with of kickback, wheel breakage and overheating of the
one hand on housing and the other on the side motor may occur.
grip (handle).
WARNING: Do not start the cutting operation
NOTE: A dual purpose wheel can be used for both in the workpiece. Let the wheel reach full speed
grinding and cutting-off operations. and carefully enter into the cut moving the tool
forward over the workpiece surface. The wheel
Refer to the "Grinding and sanding operation" for grind- may bind, walk up or kickback if the power tool is
ing operation, and refer to the "Operation with abrasive started in the workpiece.
cut-off / diamond wheel" for cutting-off operation.
WARNING: During cutting operations, never
Grinding and sanding operation change the angle of the wheel. Placing side pres-
sure on the cut-off 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-off

wheel

15°

Fig.33

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
Fig.35
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.

19 ENGLISH
Usage example: operation with diamond wheel
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.

Fig.36 Usage example: operation with wire wheel brush

Operation with wire cup brush

Optional accessory

CAUTION: Check operation of brush by run-

ning tool with no load, insuring that no one is in
front of or in line with brush.

NOTICE: Avoid applying too much pressure

which causes over bending of wires when using
the wire cup brush. It may lead to premature
breakage.
Fig.38
Usage example: operation with wire cup brush
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.37

Fig.39

20 ENGLISH
 1. Open the lid on the tool as shown in the figure.
WIRELESS ACTIVATION
FUNCTION
Only for model DGA418 / DGA468 / DGA518
1

What you can do with the wireless

activation function
The wireless activation function enables clean and com-
fortable operation. By connecting a supported vacuum
cleaner to the tool, you can run the vacuum cleaner
automatically along with the switch operation of the tool.
Fig.41
► 1.
‌ Lid

2. Insert the wireless unit to the slot and then close

the lid.
When inserting the wireless unit, align the projections
with the recessed portions on the slot.

Fig.40

To use the wireless activation function, prepare follow-

ing items: 1
• A wireless unit (optional accessory)
• A vacuum cleaner which supports the wireless
activation function
The overview of the wireless activation function
setting is as follows. Refer to each section for detail
procedures. 3
1. Installing the wireless unit
2
2. Tool registration for the vacuum cleaner
3. Starting the wireless activation function

Installing the wireless unit Fig.42

► 1.
‌ Wireless unit 2. Projection 3. Lid 4. Recessed
Optional accessory portion

CAUTION: Place the tool on a flat and stable

surface when installing the wireless unit.

NOTICE: Clean the dust and dirt on the tool

before installing the wireless unit. Dust or dirt
may cause malfunction if it comes into the slot of the
wireless unit.
NOTICE: To prevent the malfunction caused by
static, touch a static discharging material, such
as a metal part of the tool, before picking up the
wireless unit.
NOTICE: When installing the wireless unit,
always be sure that the wireless unit is inserted
in the correct direction and the lid is completely
closed.

21 ENGLISH
When removing the wireless unit, open the lid slowly. 2. Set the stand-by switch on the vacuum cleaner to
The hooks on the back of the lid will lift the wireless unit "AUTO".
as you pull up the lid.

3 1

Fig.44
► 1.
‌ Stand-by switch

3. Press the wireless activation button on the vac-

Fig.43 uum cleaner for 3 seconds until the wireless activation
► 1.
‌ Wireless unit 2. Hook 3. Lid lamp blinks in green. And then press the wireless acti-
vation button on the tool in the same way.
After removing the wireless unit, keep it in the supplied
case or a static-free container.
NOTICE: Always use the hooks on the back of
the lid when removing the wireless unit. If the
hooks do not catch the wireless unit, close the lid
completely and open it slowly again. 1 2

Tool registration for the vacuum

cleaner
NOTE: A Makita vacuum cleaner supporting the
wireless activation function is required for the tool
registration.
NOTE: Finish installing the wireless unit to the tool 1
before starting the tool registration.
NOTE: During the tool registration, do not pull the
switch trigger or turn on the power switch on the 2
vacuum cleaner.
NOTE: Refer to the instruction manual of the vacuum
cleaner, too.

If you wish to activate the vacuum cleaner along with

the switch operation of the tool, finish the tool registra-
tion beforehand.
1. Install the batteries to the vacuum cleaner and the Fig.45
tool. ► 1.
‌ Wireless activation button 2. Wireless activation
lamp

If the vacuum cleaner and the tool are linked success-

fully, the wireless activation lamps will light up in green
for 2 seconds and start blinking in blue.

22 ENGLISH
 NOTE: The wireless activation lamps finish blinking 4. Push the wireless activation button on the tool
in green after 20 seconds elapsed. Press the wireless briefly. The wireless activation lamp will blink in blue.
activation button on the tool while the wireless acti-
vation lamp on the cleaner is blinking. If the wireless
activation lamp does not blink in green, push the wire-
less activation button briefly and hold it down again. 1
NOTE: When performing two or more tool registra-
tions for one vacuum cleaner, finish the tool registra- 2
tion one by one.

Starting the wireless activation

function
NOTE: Finish the tool registration for the vacuum
cleaner prior to the wireless activation.
NOTE: Refer to the instruction manual of the vacuum
cleaner, too.
Fig.48
After registering a tool to the vacuum cleaner, the
vacuum cleaner will automatically runs along with the ► 1.
‌ Wireless activation button 2. Wireless activation
switch operation of the tool. lamp

1. Install the wireless unit to the tool. 5. Turn on the tool. Check if the vacuum cleaner runs
2. Connect the hose of the vacuum cleaner with the while the tool is operating.
tool. To stop the wireless activation of the vacuum cleaner,
push the wireless activation button on the tool.
NOTE: The wireless activation lamp on the tool will
stop blinking in blue when there is no operation for
2 hours. In this case, set the stand-by switch on the
vacuum cleaner to "AUTO" and push the wireless
activation button on the tool again.
NOTE: The vacuum cleaner starts/stops with a delay.
There is a time lag when the vacuum cleaner detects
a switch operation of the tool.
NOTE: The transmission distance of the wireless unit
may vary depending on the location and surrounding
circumstances.
Fig.46 NOTE: When two or more tools are registered to
3. Set the stand-by switch on the vacuum cleaner to one vacuum cleaner, the vacuum cleaner may start
"AUTO". running even if you do not turn on your tool because
another user is using the wireless activation function.

Fig.47
► 1.
‌ Stand-by switch

23 ENGLISH
Description of the wireless activation lamp status

Fig.49
► 1.
‌ Wireless activation lamp

The wireless activation lamp shows the status of the wireless activation function. Refer to the table below for the
meaning of the lamp status.
Status Wireless activation lamp Description
Color Duration
On Blinking
Standby Blue 2 hours The wireless activation of the vacuum cleaner is available. The
lamp will automatically turn off when no operation is performed
for 2 hours.
When The wireless activation of the vacuum cleaner is available and the
the tool is tool is running.
running.
Tool Green 20 seconds Ready for the tool registration. Waiting for the registration by the
registration vacuum cleaner.
2 seconds The tool registration has been finished. The wireless activation
lamp will start blinking in blue.
Cancelling Red 20 seconds Ready for the cancellation of the tool registration. Waiting for the
tool cancellation by the vacuum cleaner.
registration
2 seconds The cancellation of the tool registration has been finished. The
wireless activation lamp will start blinking in blue.
Others Red 3 seconds The power is supplied to the wireless unit and the wireless activa-
tion function is starting up.
Off - - The wireless activation of the vacuum cleaner is stopped.

24 ENGLISH
 If the cancellation is performed successfully, the wire-
Cancelling tool registration for the less activation lamps will light up in red for 2 seconds
vacuum cleaner and start blinking in blue.
NOTE: The wireless activation lamps finish blinking in
Perform the following procedure when cancelling the
red after 20 seconds elapsed. Press the wireless acti-
tool registration for the vacuum cleaner.
vation button on the tool while the wireless activation
1. Install the batteries to the vacuum cleaner and the lamp on the cleaner is blinking. If the wireless acti-
tool. vation lamp does not blink in red, push the wireless
2. Set the stand-by switch on the vacuum cleaner to activation button briefly and hold it down again.
"AUTO".

Fig.50
► 1.
‌ Stand-by switch

3. Press the wireless activation button on the vac-

uum cleaner for 6 seconds. The wireless activation
lamp blinks in green and then become red. After that,
press the wireless activation button on the tool in the
same way.

1 2

Fig.51
► 1.
‌ Wireless activation button 2. Wireless activation
lamp

25 ENGLISH
Troubleshooting for wireless activation function
Before asking for repairs, conduct your own inspection first. If you find a problem that is not explained in the manual,
do not attempt to dismantle the tool. Instead, ask Makita Authorized Service Centers, always using Makita replace-
ment parts for repairs.
State of abnormality Probable cause (malfunction) Remedy
The wireless activation lamp does The wireless unit is not installed into the tool. Install the wireless unit correctly.
not light/blink. The wireless unit is improperly installed
into the tool.
The terminal of the wireless unit and/or Gently wipe off dust and dirt on the terminal of the
the slot is dirty. wireless unit and clean the slot.
The wireless activation button on the Push the wireless activation button on the tool
tool has not been pushed. briefly.
The stand-by switch on the vacuum Set the stand-by switch on the vacuum cleaner to
cleaner is not set to "AUTO". "AUTO".
No power supply Supply the power to the tool and the vacuum cleaner.
Cannot finish tool registration / can- The wireless unit is not installed into the tool. Install the wireless unit correctly.
celling tool registration successfully. The wireless unit is improperly installed
into the tool.
The terminal of the wireless unit and/or Gently wipe off dust and dirt on the terminal of the
the slot is dirty. wireless unit and clean the slot.
The stand-by switch on the vacuum Set the stand-by switch on the vacuum cleaner to
cleaner is not set to "AUTO". "AUTO".
No power supply Supply the power to the tool and the vacuum cleaner.
Incorrect operation Push the wireless activation button briefly and perform
the tool registration/cancellation procedures again.
The tool and vacuum cleaner are away Get the tool and vacuum cleaner closer to each other. The
from each other (out of the transmission maximum transmission distance is approximately 10 m
range). however it may vary according to the circumstances.
Before finishing the tool registration/cancellation; Push the wireless activation button briefly and
- the switch of the tool is turned on or; perform the tool registration/cancellation procedures
- the power button on the vacuum again.
cleaner is turned on.
The tool registration procedures for the Perform the tool registration procedures for both the
tool or vacuum cleaner have not finished. tool and the vacuum cleaner at the same timing.
Radio disturbance by other appliances Keep the tool and vacuum cleaner away from the
which generate high-intensity radio appliances such as Wi-Fi devices and microwave
waves. ovens.
The vacuum cleaner does not run The wireless unit is not installed into the tool. Install the wireless unit correctly.
along with the switch operation of The wireless unit is improperly installed
the tool. into the tool.
The terminal of the wireless unit and/or Gently wipe off dust and dirt on the terminal of the
the slot is dirty. wireless unit and clean the slot.
The wireless activation button on the Push the wireless activation button briefly and make
tool has not been pushed. sure that the wireless activation lamp is blinking in blue.
The stand-by switch on the vacuum Set the stand-by switch on the vacuum cleaner to
cleaner is not set to "AUTO". "AUTO".
More than 10 tools are registered to the Perform the tool registration again.
vacuum cleaner. If more than 10 tools are registered to the vacuum cleaner,
the tool registered earliest will be cancelled automatically.
The vacuum cleaner erased all tool Perform the tool registration again.
registrations.
No power supply Supply the power to the tool and the vacuum cleaner.
The tool and vacuum cleaner are away Get the tool and vacuum cleaner closer each other.
from each other (out of the transmission The maximum transmission distance is approxi-
range). mately 10 m however it may vary according to the
circumstances.
Radio disturbance by other appliances Keep the tool and vacuum cleaner away from the
which generate high-intensity radio appliances such as Wi-Fi devices and microwave
waves. ovens.
The vacuum cleaner runs while the Other users are using the wireless Turn off the wireless activation button of the other
tool is not operating. activation of the vacuum cleaner with tools or cancel the tool registration of the other
their tools. tools.

26 ENGLISH
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.52
► 1.
‌ Exhaust vent 2. Inhalation vent

Remove the dust cover from inhalation vent and clean it

for smooth air circulation.

Fig.53
► 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.

27 ENGLISH
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 work-
piece causing poor control.
• When using a grinding wheel guard for cutting-off 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-off 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-off wheel guard or grinding wheel guard with a wheel-type wire brush with a thick-
ness 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.
• When using dual purpose (combined grinding and cutting-off abrasive) flange mounted wheels, only
use a cut-off wheel guard.

2 2 9 2 14 15 2 19 21
13

3 3 12 3 18
10 3
7 16 17 3
4 3
11 16 17 20 22
5 8
6 5
6 5 5
6 6
5 5
6

- Application 100 mm model 115 mm model 125 mm model

1 - Side grip
2 - Wheel guard (for grinding wheel)
3 - Inner flange
4 Grinding / Sanding Depressed center wheel / Flap disc
5 - Lock nut
6 - - Ezynut *1
7 - Back up pad
8 Grinding Flex wheel
9 - Inner flange and rubber Rubber pad 100 Rubber pad 115
pad 76
10 Sanding Abrasive disc
11 - Sanding lock nut
12 Wire brushing Wire wheel brush

28 ENGLISH
 - Application 100 mm model 115 mm model 125 mm model
13 Wire brushing Wire cup brush
14 Hole cutting Hole cutter
15 - Wheel guard (for cut-off wheel)
16 Cutting-off Abrasive cut-off wheel / Diamond wheel
17 Grinding / Cutting-off Dual purpose wheel
18 - Clip-on cutting wheel guard attachment *2
19 - Dust collecting wheel guard for cutting-off *3
20 Cutting-off Diamond wheel
21 - - Dust collecting wheel guard for grinding *4
22 Grinding - Cup-type diamond wheel *4
- - Lock nut wrench

NOTE: *1 Only for tools with M14 spindle thread.

NOTE: *2 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: *3 For more details, refer to each instruction manual of the guard.
NOTE: *4 Only for model DGA467 / DGA468 / DGA517 / DGA518
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 regard-

ing these accessories, ask your local Makita Service
Center.
• Makita genuine battery and charger
• Accessories listed in "COMBINATION OF
APPLICATIONS AND ACCESSORIES"
• Wireless unit (For models with wireless activation
function)
NOTE: Some items in the list may be included in the
tool package as standard accessories. They may
differ from country to country.

29 ENGLISH
30
31
Makita Europe N.V. Jan-Baptist Vinkstraat 2,
3070 Kortenberg, Belgium

Makita Corporation 3-11-8, Sumiyoshi-cho,

Anjo, Aichi 446-8502 Japan

885616A226
EN
www.makita.com 20221004