Makita DTW300RFJ User manual

INSTRUCTION MANUAL
Cordless Impact Wrench
DTW300
DTW301
ENGLISH: Original instructions
Read before use.

2ENGLISH
SPECIFICATIONS
Model: DTW300 DTW301
Fastening capacities Standard bolt M10 - M20
High tensile bolt M10 - M16
Square drive 12.7 mm
No load speed (RPM) Max impact mode 0 - 3,200 min-1
Hard impact mode 0 - 2,600 min-1
Medium impact mode 0 - 1,800 min-1
Soft impact mode 0 - 1,000 min-1
Impacts per minute Max impact mode 0 - 4,000 min-1
Hard impact mode 0 - 3,400 min-1
Medium impact mode 0 - 2,600 min-1
Soft impact mode 0 - 1,800 min-1
Overall length 144 mm
Rated voltage D.C. 18 V
Net weight 1.5 - 1.8 kg
• Duetoourcontinuingprogramofresearchanddevelopment,thespecicationshereinaresubjecttochange
without notice.
• Specicationsmaydi󰀨erfromcountrytocountry.
• Theweightmaydi󰀨erdependingontheattachment(s),includingthebatterycartridge.Thelightestandheavi-
est combination, according to EPTA-Procedure 01/2014, are shown in the table.
Applicable battery cartridge and charger
Batterycartridge BL1815N / BL1820 / BL1820B / BL1830 / BL1830B / BL1840 /
BL1840B / BL1850 / BL1850B / BL1860B
Charger DC18RC / DC18RD / DC18RE / DC18SD / DC18SE / DC18SF /
DC18SH
• Someofthebatterycartridgesandchargerslistedabovemaynotbeavailabledependingonyourregionof
residence.
WARNING: Only use the battery cartridges and chargers listed above.Useofanyotherbatterycartridges
andchargersmaycauseinjuryand/orre.
Symbols
Thefollowingsshowthesymbolsusedfortheequip-
ment.Besurethatyouunderstandtheirmeaningbefore
use.
Read instruction manual.
Ni-MH
Li-ion
OnlyforEUcountries
Do not dispose of electric equipment or
batterypacktogetherwithhouseholdwaste
material!
In observance of the European Directives,
on Waste Electric and Electronic
Equipment and Batteries and Accumulators
and Waste Batteries and Accumulators
and their implementation in accordance
with national laws, electric equipment and
batteriesandbatterypack(s)thathave
reached the end of their life must be col-
lectedseparatelyandreturnedtoanenvi-
ronmentallycompatiblerecyclingfacility.
Intended use
The tool is intended for fastening bolts and nuts.
Noise
ThetypicalA-weightednoiseleveldeterminedaccord-
ing to EN62841-2-2:
Model DTW300
Sound pressure level (LpA) : 97 dB(A)
Sound power level (LWA) : 108 dB (A)
Uncertainty(K):3dB(A)
Model DTW301
Sound pressure level (LpA) : 97 dB(A)
Sound power level (LWA) : 108 dB (A)
Uncertainty(K):3dB(A)
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.

3ENGLISH
WARNING: Wear ear protection.
WARNING: The noise emission during actual
use of the power tool can di󰀨er from the declared
value(s) depending on the ways in which the
tool is used especially what kind of workpiece is
processed.
WARNING: Be sure to identify safety mea-
sures to protect the operator that are based on an
estimation of exposure in the actual conditions of
use (taking account of all parts of the operating
cycle such as the times when the tool is switched
o󰀨 and when it is running idle in addition to the
trigger time).
Vibration
The vibration total value (tri-axial vector sum) deter-
mined according to EN62841-2-2:
Model DTW300
Work mode: impact tightening of fasteners of the maxi-
mumcapacityofthetool
Vibration emission (ah) : 12.5 m/s2
Uncertainty(K):1.5m/s2
Model DTW301
Work mode: impact tightening of fasteners of the maxi-
mumcapacityofthetool
Vibration emission (ah) : 12.5 m/s2
Uncertainty(K):1.5m/s2
NOTE: The declared vibration total value(s) has been
measured in accordance with a standard test method
andmaybeusedforcomparingonetoolwithanother.
NOTE:Thedeclaredvibrationtotalvalue(s)mayalso
beusedinapreliminaryassessmentofexposure.
WARNING: The vibration emission during
actual use of the power tool can di󰀨er from the
declared value(s) depending on the ways in which
the tool is used especially what kind of workpiece
is processed.
WARNING: Be sure to identify safety mea-
sures to protect the operator that are based on an
estimation of exposure in the actual conditions of
use (taking account of all parts of the operating
cycle such as the times when the tool is switched
o󰀨 and when it is running idle in addition to the
trigger time).
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, instruc-
tions, illustrations and specications provided with this
power tool. Failure to follow all instructions listed below
mayresultinelectricshock,reand/orseriousinjury.
Save all warnings and instruc-
tions for future reference.
Theterm"powertool"inthewarningsreferstoyour
mains-operated(corded)powertoolorbattery-operated
(cordless) power tool.
Work area safety
1. Keep work area clean and well lit. Cluttered or
dark areas invite accidents.
2. Do not operate power tools in explosive atmo-
spheres, such as in the presence of ammable
liquids, gases or dust. Power tools create sparks
whichmayignitethedustorfumes.
3. Keep children and bystanders away while
operating a power tool. Distractions can cause
youtolosecontrol.
Electrical safety
1. Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any
adapter plugs with earthed (grounded) power
tools. Unmodiedplugsandmatchingoutletswill
reduce risk of electric shock.
2. Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of elec-
tricshockifyourbodyisearthedorgrounded.
3. Do not expose power tools to rain or wet con-
ditions. Water entering a power tool will increase
the risk of electric shock.
4. Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges
or moving parts. Damaged or entangled cords
increase the risk of electric shock.
5.
When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of a cord
suitable for outdoor use reduces the risk of electric shock.
6. If operating a power tool in a damp location
is unavoidable, use a residual current device
(RCD) protected supply. Use of an RCD reduces
the risk of electric shock.
7.
Power tools can produce electromagnetic elds
(EMF) that are not harmful to the user. However,
users of pacemakers and other similar medical
devices should contact the maker of their device and/
or doctor for advice before operating this power tool.
Personal safety
1. Stay alert, watch what you are doing and use
common sense when operating a power tool.
Do not use a power tool while you are tired or
under the inuence of drugs, alcohol or med-
ication. A moment of inattention while operating
powertoolsmayresultinseriouspersonalinjury.

4ENGLISH
2. Use personal protective equipment. Always
wear eye protection. Protective equipment such
asadustmask,non-skidsafetyshoes,hardhator
hearing protection used for appropriate conditions
willreducepersonalinjuries.
3. Prevent unintentional starting. Ensure the
switch is in the o󰀨-position before connecting
to power source and/or battery pack, picking
up or carrying the tool.Carryingpowertoolswith
yourngerontheswitchorenergisingpowertools
that have the switch on invites accidents.
4. Remove any adjusting key or wrench before
turning the power tool on.Awrenchorakeyleft
attachedtoarotatingpartofthepowertoolmay
resultinpersonalinjury.
5. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.
6. Dress properly. Do not wear loose clothing or
jewellery. Keep your hair and clothing away
from moving parts.Looseclothes,jewelleryor
long hair can be caught in moving parts.
7. If devices are provided for the connection of
dust extraction and collection facilities, ensure
these are connected and properly used. Use of
dust collection can reduce dust-related hazards.
8.
Do not let familiarity gained from frequent use
of tools allow you to become complacent and
ignore tool safety principles. A careless action can
causesevereinjurywithinafractionofasecond.
9. Always wear protective goggles to protect
your eyes from injury when using power tools.
The goggles must comply with ANSI Z87.1 in
the USA, EN 166 in Europe, or AS/NZS 1336
in Australia/New Zealand. In Australia/New
Zealand, it is legally required to wear a face
shield to protect your face, too.
It is an employer's responsibility to enforce
the use of appropriate safety protective equip-
ments by the tool operators and by other per-
sons in the immediate working area.
Power tool use and care
1. Do not force the power tool. Use the correct
power tool for your application. The correct
powertoolwilldothejobbetterandsaferatthe
rate for which it was designed.
2. Do not use the power tool if the switch does
not turn it on and o󰀨.Anypowertoolthatcannot
be controlled with the switch is dangerous and
must be repaired.
3. Disconnect the plug from the power source
and/or remove the battery pack, if detachable,
from the power tool before making any adjust-
ments, changing accessories, or storing power
tools.Suchpreventivesafetymeasuresreduce
theriskofstartingthepowertoolaccidentally.
4.
Store idle power tools out of the reach of children and
do not allow persons unfamiliar with the power tool
or these instructions to operate the power tool. Power
tools are dangerous in the hands of untrained users.
5. Maintain power tools and accessories. Check for
misalignment or binding of moving parts, break-
age of parts and any other condition that may
a󰀨ect the power tool’s operation. If damaged, have
the power tool repaired before use.Manyaccidents
arecausedbypoorlymaintainedpowertools.
6. Keep cutting tools sharp and clean.Properly
maintained cutting tools with sharp cutting edges
arelesslikelytobindandareeasiertocontrol.
7. Use the power tool, accessories and tool bits
etc. in accordance with these instructions, tak-
ing into account the working conditions and
the work to be performed. Use of the power tool
foroperationsdi󰀨erentfromthoseintendedcould
result in a hazardous situation.
8.
Keep handles and grasping surfaces dry, clean
and free from oil and grease.Slipperyhandlesand
grasping surfaces do not allow for safe handling and
control of the tool in unexpected situations.
9. When using the tool, do not wear cloth work
gloves which may be entangled. The entangle-
mentofclothworkglovesinthemovingpartsmay
resultinpersonalinjury.
Battery tool use and care
1. Recharge only with the charger specied by
the manufacturer. A charger that is suitable for
onetypeofbatterypackmaycreateariskofre
whenusedwithanotherbatterypack.
2. Use power tools only with specically desig-
nated battery packs.Useofanyotherbattery
packsmaycreateariskofinjuryandre.
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re.
4.
Under abusive conditions, liquid may be ejected
from the battery; avoid contact. If contact acci-
dentally occurs, ush with water. If liquid con-
tacts eyes, additionally seek medical help. Liquid
ejectedfromthebatterymaycauseirritationorburns.
5. Do not use a battery pack or tool that is dam-
aged or modied.Damagedormodiedbatteries
mayexhibitunpredictablebehaviourresultingin
re,explosionorriskofinjury.
6. Do not expose a battery pack or tool to re or
excessive temperature.Exposuretoreortem-
peratureabove130°Cmaycauseexplosion.
7. Follow all charging instructions and do not
charge the battery pack or tool outside the
temperature range specied in the instruc-
tions.Chargingimproperlyorattemperatures
outsidethespeciedrangemaydamagethe
batteryandincreasetheriskofre.

5ENGLISH
Service
1. Have your power tool serviced by a qualied
repair person using only identical replacement
parts.Thiswillensurethatthesafetyofthepower
tool is maintained.
2. Never service damaged battery packs. Service
ofbatterypacksshouldonlybeperformedbythe
manufacturer or authorized service providers.
3. Follow instruction for lubricating and chang-
ing accessories.
Cordless impact wrench safety
warnings
1. Hold the power tool by insulated gripping
surfaces, when performing an operation
where the fastener may contact hidden wiring.
Fastenerscontactinga"live"wiremaymake
exposed metal parts of the power tool "live" and
could give the operator an electric shock.
2. Wear ear protectors.
3. Check the impact socket carefully for wear,
cracks or damage before installation.
4. Hold the tool rmly.
5. Keep hands away from rotating parts.
6. Do not touch the impact socket, bolt, nut or the
workpiece immediately after operation.They
maybeextremelyhotandcouldburnyourskin.
7. Always be sure you have a rm footing.
Be sure no one is below when using the tool in
high locations.
8. The proper fastening torque may di󰀨er
depending upon the kind or size of the bolt.
Check the torque with a torque wrench.
SAVE THESE INSTRUCTIONS.
WARNING: DO NOT let comfort or familiarity
with product (gained from repeated use) replace
strict adherence to safety rules for the subject
product.
MISUSE or failure to follow the safety rules stated
in this instruction manual may cause serious
personal injury.
Important safety instructions for
battery cartridge
1. Before using battery cartridge, read all instruc-
tions and cautionary markings on (1) battery
charger, (2) battery, and (3) product using
battery.
2. Do not disassemble battery cartridge.
3. If operating time has become excessively
shorter, stop operating immediately. It may
result in a risk of overheating, possible burns
and even an explosion.
4. If electrolyte gets into your eyes, rinse them
out with clear water and seek medical atten-
tion right away. It may result in loss of your
eyesight.
5. Do not short the battery cartridge:
(1) Do not touch the terminals with any con-
ductive material.
(2) Avoid storing battery cartridge in a con-
tainer with other metal objects such as
nails, coins, etc.
(3) Do not expose battery cartridge to water
or rain.
A battery short can cause a large current
ow, overheating, possible burns and even a
breakdown.
6. Do not store the tool and battery cartridge in
locations where the temperature may reach or
exceed 50 °C (122 °F).
7. Do not incinerate the battery cartridge even if
it is severely damaged or is completely worn
out. The battery cartridge can explode in a re.
8. Be careful not to drop or strike battery.
9. Do not use a damaged battery.
10. The contained lithium-ion batteries are subject
to the Dangerous Goods Legislation require-
ments.
Forcommercialtransportse.g.bythirdparties,
forwarding agents, special requirement on pack-
aging and labeling must be observed.
For preparation of the item being shipped, consult-
ing an expert for hazardous material is required.
Pleasealsoobservepossiblymoredetailed
national regulations.
Tapeormasko󰀨opencontactsandpackupthe
batteryinsuchamannerthatitcannotmove
around in the packaging.
11. When disposing the battery cartridge, remove
it from the tool and dispose of it in a safe
place. Follow your local regulations relating to
disposal of battery.
12. Use the batteries only with the products
specied by Makita. Installing the batteries to
non-compliantproductsmayresultinare,exces-
siveheat,explosion,orleakofelectrolyte.
13. If the tool is not used for a long period of time,
the battery must be removed from the tool.
SAVE THESE INSTRUCTIONS.
CAUTION: Only use genuine Makita batteries.
Use of non-genuine Makita batteries, or batteries that
havebeenaltered,mayresultinthebatterybursting
causingres,personalinjuryanddamage.Itwill
alsovoidtheMakitawarrantyfortheMakitatooland
charger.
Tips for maintaining maximum
battery life
1. Charge the battery cartridge before completely
discharged. Always stop tool operation and
charge the battery cartridge when you notice
less tool power.
2. Never recharge a fully charged battery car-
tridge. Overcharging shortens the battery
service life.
3. Charge the battery cartridge with room tem-
perature at 10 °C - 40 °C (50 °F - 104 °F). Let
a hot battery cartridge cool down before
charging it.
4. Charge the battery cartridge if you do not use
it for a long period (more than six months).

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FUNCTIONAL
DESCRIPTION
CAUTION: Always be sure that the tool is
switched o󰀨 and the battery cartridge is removed
before adjusting or checking function on the tool.
Installing or removing battery
cartridge
CAUTION: Always switch o󰀨 the tool before
installing or removing of the battery cartridge.
CAUTION: Hold the tool and the battery car-
tridge rmly when installing or removing battery
cartridge.Failuretoholdthetoolandthebattery
cartridgermlymaycausethemtoslipo󰀨yourhands
andresultindamagetothetoolandbatterycartridge
andapersonalinjury.
1
2
3
►1. Red indicator 2. Button 3.Batterycartridge
Toremovethebatterycartridge,slideitfromthetool
while sliding the button on the front of the cartridge.
Toinstallthebatterycartridge,alignthetongueonthe
batterycartridgewiththegrooveinthehousingandslip
itintoplace.Insertitallthewayuntilitlocksinplace
withalittleclick.Ifyoucanseetheredindicatoronthe
uppersideofthebutton,itisnotlockedcompletely.
CAUTION: Always install the battery cartridge
fully until the red indicator cannot be seen. If not,
itmayaccidentallyfalloutofthetool,causinginjuryto
youorsomeonearoundyou.
CAUTION: Do not install the battery cartridge
forcibly.Ifthecartridgedoesnotslideineasily,itis
notbeinginsertedcorrectly.
Tool / battery protection system
Thetoolisequippedwithatool/batteryprotectionsys-
tem.Thissystemautomaticallycutso󰀨thepower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
This protection works when the tool is operated in a
mannerthatcausesittodrawanabnormallyhighcur-
rent.Inthissituation,turnthetoolo󰀨andstoptheappli-
cation that caused the tool to become overloaded. Then
turn the tool on to restart.
Overheat protection
Thisprotectionworkswhenthetoolorbatteryisover-
heated.Inthissituation,letthetoolandbatterycool
before turning the tool on again.
Overdischarge protection
Thisprotectionworkswhentheremainingbattery
capacitygetslow.Inthissituation,removethebattery
fromthetoolandchargethebattery.
Indicating the remaining battery capacity
Only for battery cartridges with the indicator
1
2
►1. Indicator lamps 2. Check button
Pressthecheckbuttononthebatterycartridgetoindi-
catetheremainingbatterycapacity.Theindicatorlamps
light up for a few seconds.
Indicator lamps Remaining
capacity
Lighted O󰀨 Blinking
75% to 100%
50% to 75%
25% to 50%
0% to 25%
Charge the
battery.
Thebattery
mayhave
malfunctioned.
NOTE: Depending on the conditions of use and the
ambienttemperature,theindicationmaydi󰀨erslightly
fromtheactualcapacity.

7ENGLISH
Switch action
1
►1. Switch trigger
CAUTION: Before installing the battery car-
tridge into the tool, always check to see that the
switch trigger actuates properly and returns to
the "OFF" position when released.
Tostartthetool,simplypulltheswitchtrigger.Tool
speedisincreasedbyincreasingpressureontheswitch
trigger. Release the switch trigger to stop.
NOTE:Thetoolautomaticallystopswhenyoukeep
pulling the switch trigger for 6 minutes.
NOTE: When full speed mode is turned on, the rota-
tionspeedbecomesfastestevenifyoudonotpullthe
switchtriggerfully.
For detail information, refer to the section of full speed
mode.
Lighting up the front lamp
CAUTION: Do not look in the light or see the
source of light directly.
1
►1. Lamp
1
►1. Button
To turn on the lamp status, press the button for one second. To
turno󰀨thelampstatus,pressthebutton for one second again.
With the lamp status ON, pull the switch trigger to turn on
thelamp.Toturno󰀨,releaseit.Thelampgoesoutapprox-
imately10secondsafterreleasingtheswitchtrigger.
With the lamp status OFF, the lamp does not turn on
even if pulling the trigger.
NOTE: Toconrmthelampstatus,pullthetrigger.Whenthe
lamplightsupbypullingtheswitchtrigger,thelampstatusis
ON. When the lamp does not come on, the lamp status is OFF.
NOTE:Whenthetoolisoverheated,thelightashes
foroneminute,andthentheLEDdisplaygoeso󰀨.In
this case, cool down the tool before operating again.
NOTE:Useadryclothtowipethedirto󰀨thelensof
the lamp. Be careful not to scratch the lens of lamp, or
itmaylowertheillumination.
NOTE: While pulling the switch trigger, the lamp
status cannot be changed.
NOTE:Forapproximately10secondsafterreleasing
the switch trigger, the lamp status can be changed.
Reversing switch action
1
A
B
►1. Reversing switch lever
CAUTION: Always check the direction of
rotation before operation.
CAUTION: Use the reversing switch only after
the tool comes to a complete stop. Changing the direc-
tionofrotationbeforethetoolstopsmaydamagethetool.
CAUTION: When not operating the tool, always
set the reversing switch lever to the neutral position.

8ENGLISH
This tool has a reversing switch to change the direction of rota-
tion. Depress the reversing switch lever from the A side for clock-
wise rotation or from the B side for counterclockwise rotation.
When the reversing switch lever is in the neutral posi-
tion, the switch trigger cannot be pulled.
Changing the application mode
Changing the impact force
You can change the impact force in four steps: 4 (max), 3 (hard), 2 (medium), and 1 (soft).
This allows a tightening suitable to the work.
Theleveloftheimpactforcechangeseverytimeyoupressthebutton .
Youcanchangetheimpactforcewithinapproximatelyoneminuteafterreleasingtheswitchtrigger.
NOTE:
Youcanextendthetimetochangetheimpactforceapproximatelyoneminuteifyoupressthebutton or .
Application mode
(Impact force grade
displayed on panel)
Maximum blows Purpose Example of application
4 (Max) 4,000 min-1 (/min) Tightening with the maximum force
and speed.
Assembling steel frames and tighten-
ing long screws or bolts.
3 (Hard) 3,400 min-1 (/min) Tightening with less force and speed
than Max mode (easier to control than
Max mode).
Assembling steel frames.
2 (Medium) 2,600 min-1 (/min) Tighteningwhenagoodnishingis
needed.
Assembling or disassembling scaf-
folds and frameworks.
1 (Soft) 1,800 min-1 (/min) Tightening with less force to avoid
screw thread breakage.
Assembling furniture.
: The lamp is on.

9ENGLISH
NOTE: When none of the lamp on the panel is lit, pull the switch trigger once before pressing the button .
NOTE:Alllampsontheswitchpanelgooutwhenthetoolisturnedo󰀨tosavethebatterypower.Theimpactforce
gradecanbecheckedbypullingtheswitchtriggertotheextentthatthetooldoesnotoperate.
Changing the application mode
Thistoolemploysseveraleasy-to-useapplicationmodesfordrivingboltswithgoodcontrol.
Thetypeoftheapplicationmodechangeseverytimeyoupressthebutton .
NOTE:
Youcanextendthetimetochangetheapplicationmodeapproximatelyoneminuteifyoupressthebutton or .
Application mode
(Assist type displayed on panel)
Feature Purpose
Bolt mode Clockwise
This mode helps to repeat screwdriving
continuouslywithequaltorque.Thismode
also helps to reduce the risk of breakage
of bolts/nuts due to overtightening.
Counterclockwise
This mode helps to prevent a bolt from
fallingo󰀨.Whenlooseningaboltwith
the tool driving in counterclockwise
rotation,thetoolautomaticallystops
or slows down after the bolt/nut gets
enough loosened.
NOTE:
The timing to stop the driving varies
depending on the type of the bolt/nut
and material to be driven. Make a test
driving before using this mode.
Clockwise
Preventing over tightening of bolts.
Counterclockwise
Loosening bolts.
Bolt mode (1) Clockwise
Thetoolstopsautomaticallyassoonas
it has started impact blows.
Counterclockwise
The impact force is 4. The tool stops
automaticallyassoonasithasloos-
ened the bolt/nut.
–
Bolt mode (2) Clockwise
Thetoolstopsautomaticallyapprox-
imately0.5secondlaterfromthe
moment that the tool has started impact
blows.
Counterclockwise
The impact force is 4. The tool stops
automaticallyassoonasithasloos-
ened the bolt/nut.
–

10 ENGLISH
Application mode
(Assist type displayed on panel)
Feature Purpose
Bolt mode (3) Clockwise
Thetoolstopsautomaticallyapproxi-
mately1secondlaterfromthemoment
that the tool has started impact blows.
Counterclockwise
The tool slows down the rotation after it
has loosened the bolt/nut.
–
: The lamp is on.
NOTE: When none of the lamp on the panel is lit, pull the switch trigger once before pressing the button .
NOTE:Alllampsontheswitchpanelgooutwhenthetoolisturnedo󰀨tosavethebatterypower.Thetypeofthe
applicationmodecanbecheckedbypullingtheswitchtriggertotheextentthatthetooldoesnotoperate.
Full speed mode
12
►1. Button 2. Lamp
When full speed mode is turned on, the tool speed
becomesfastestevenifyoudonotpulltheswitchtrig-
gerfully.Whenfullspeedmodeisturnedo󰀨,thetool
speedincreasesasyouincreasethepressureonthe
switch trigger.
To turn on full speed mode, press and hold the but-
ton .Toturno󰀨fullspeedmode,pressandholdthe
button again.
The lamp turns on while full speed mode is on.
NOTE: Full speed mode continues even after switch-
ing the impact force mode/auto stop mode.
ASSEMBLY
CAUTION: Always be sure that the tool is
switched o󰀨 and the battery cartridge is removed
before carrying out any work on the tool.
Selecting correct impact socket
Alwaysusethecorrectsizeimpactsocketforboltsand
nuts. An incorrect size impact socket will result in inac-
curate and inconsistent fastening torque and/or damage
to the bolt or nut.
Installing or removing impact socket
Optional accessory
CAUTION: Make sure that the impact socket
and the mounting portion are not damaged before
installing the impact socket.
CAUTION: After inserting the impact socket,
make sure that it is rmly secured. If it comes out,
do not use it.
NOTE:Thewayofimpactsocketinstallationvaries
dependingonthetypeofthesquaredriveonthetool.
Tool with the ring spring
Model DTW300
For impact socket without O-ring and pin
1
2
3
►1. Impact socket 2. Square drive 3. Ring spring
Push the impact socket onto the square drive until it
locks into place.
Toremovetheimpactsocket,simplypullito󰀨.

11 ENGLISH
For impact socket with O-ring and pin
1
2
3
►1. Impact socket 2. O-ring 3. Pin
Move the O-ring out of the groove in the impact socket
and remove the pin from the impact socket. Fit the
impact socket onto the square drive so that the hole in
the impact socket is aligned with the hole in the square
drive.
Insert the pin through the hole in the impact socket and
square drive. Then return the O-ring to the original posi-
tion in the impact socket groove to retain the pin.
To remove the impact socket, follow the installation
procedures in reverse.
Tool with the detent pin
Model DTW301
1
2
3
4
►1. Impact socket 2. Hole 3. Square drive 4. Detent
pin
Align the hole in the side of the impact socket with the
detent pin on the square drive and push the impact
socket onto the square drive until it locks into place. Tap
itlightlyifrequired.
Toremovetheimpactsocket,simplypullito󰀨.Ifitis
hard to remove, depress the detent pin while pulling the
impact socket.
Installing hook
CAUTION: When installing the hook, always
secure it with the screw rmly. If not, the hook
maycomeo󰀨fromthetoolandresultinthepersonal
injury.
2
3
1
►1. Groove 2. Hook 3. Screw
Thehookisconvenientfortemporarilyhangingthetool.
This can be installed on either side of the tool. To install
the hook, insert it into a groove in the tool housing on
either side and then secure it with a screw. To remove,
loosen the screw and then take it out.
OPERATION
CAUTION: Always insert the battery cartridge
all the way until it locks in place.Ifyoucanseethe
red indicator on the upper side of the button, it is not
lockedcompletely.Insertit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.
Holdthetoolrmlyandplacetheimpactsocketover
the bolt or nut. Turn the tool on and fasten for the proper
fastening time.
Theproperfasteningtorquemaydi󰀨erdependingupon
the kind or size of the bolt, the material of the workpiece
to be fastened, etc. The relation between fastening
torqueandfasteningtimeisshowninthegures.

12 ENGLISH
Proper fastening torque for standard bolt
0
(2447)
(2039)
(1631)
(1223)
(815)
(407)
240
200
160
120
80
40
2
(kgf•cm)
N•m
12
1
M20
M16
M16
M20
M12
M12
1. Fastening time (second) 2. Fastening torque
Proper fastening torque for high tensile bolt
(kgf•cm)
N•m
0
23
1
M12
M14
M16
M12
M14
M16
1
2
(2855)
280
(2447)
(2039)
(1631)
(1223)
(815)
(407)
240
200
160
120
80
40
1. Fastening time (second) 2. Fastening torque
NOTE: Hold the tool pointed straight at the bolt or nut.
NOTE:Excessivefasteningtorquemaydamagethe
bolt/nutorimpactsocket.Beforestartingyourjob,
alwaysperformatestoperationtodeterminethe
properfasteningtimeforyourboltornut.
NOTE:Ifthetoolisoperatedcontinuouslyuntilthe
batterycartridgehasdischarged,allowthetooltorest
for15minutesbeforeproceedingwithafreshbattery
cartridge.
Thefasteningtorqueisa󰀨ectedbyawidevarietyof
factorsincludingthefollowing.Afterfastening,always
check the torque with a torque wrench.
1. Whenthebatterycartridgeisdischargedalmost
completely,voltagewilldropandthefastening
torque will be reduced.
2. Impact socket
• Failure to use the correct size impact socket
will cause a reduction in the fastening torque.
• A worn impact socket (wear on the hex end
or square end) will cause a reduction in the
fastening torque.
3. Bolt
• Eventhoughthetorquecoe󰀩cientandthe
class of bolt are the same, the proper fasten-
ingtorquewilldi󰀨eraccordingtothediame-
ter of bolt.
• Even though the diameters of bolts are the
same,theproperfasteningtorquewilldi󰀨er
accordingtothetorquecoe󰀩cient,theclass
of bolt and the bolt length.
4. Theuseoftheuniversaljointortheextension
bar somewhat reduces the fastening force of the
impactwrench.Compensatebyfasteningfora
longer period of time.
5. The manner of holding the tool or the material
ofdrivingpositiontobefastenedwilla󰀨ectthe
torque.
6. Operating the tool at low speed will cause a reduc-
tion in the fastening torque.
MAINTENANCE
CAUTION: Always be sure that the tool is
switched o󰀨 and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
NOTICE: Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
To maintain product SAFETY and RELIABILITY,
repairs,anyothermaintenanceoradjustmentshould
beperformedbyMakitaAuthorizedorFactoryService
Centers,alwaysusingMakitareplacementparts.
OPTIONAL
ACCESSORIES
CAUTION: These accessories or attachments
are recommended for use with your Makita tool
specied in this manual.Theuseofanyother
accessories or attachments might present a risk of
injurytopersons.Onlyuseaccessoryorattachment
for its stated purpose.
Ifyouneedanyassistanceformoredetailsregard-
ingtheseaccessories,askyourlocalMakitaService
Center.
• Impact socket
• Extension bar
• Universaljoint
• Socket bit adapter
• Tool hanger
• Makitagenuinebatteryandcharger
NOTE:Someitemsinthelistmaybeincludedinthe
toolpackageasstandardaccessories.Theymay
di󰀨erfromcountrytocountry.

13

14

15

www.makita.com
Makita Europe N.V.
Makita Corporation
3-11-8, Sumiyoshi-cho,
Anjo, Aichi 446-8502 Japa
n
Jan-Baptist Vinkstraat 2,
3070 Kortenberg, Belgium
885778-220
EN
20191128