Makita DUC254SF User manual

INSTRUCTION MANUAL
Cordless Chain Saw
DUC204
DUC254
DUC254C
ENGLISH: Original instructions
Read before use.

2ENGLISH
SPECIFICATIONS
Model: DUC204 DUC254 DUC254C
Overall length (without guide bar) 256 mm
Rated voltage D.C. 18 V
Net weight 2.8 - 3.3 kg
Standard guide bar length 200 mm 250 mm
Recommended guide bar length with 90PX 200 - 250 mm -
with 91PX -250 mm -
with 25AP -250 mm
Applicable saw chain type
(refer to the table below)
90PX 90PX
91PX
25AP
Standard sprocket Number of teeth 6 9
Pitch 3/8″ 1/4″
Chain speed 0 - 24 m/s
(0 - 1,440 m/min)
0 - 22.5 m/s
(0 - 1,350 m/min)
Chain oil tank volume 140 cm3
• Duetoourcontinuingprogramofresearchanddevelopment,thespecicationshereinaresubjecttochange
without notice.
• Specicationsmaydifferfromcountrytocountry.
• The weight may differ 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
BL1815N / BL1820 / BL1820B / BL1830 / BL1830B / BL1840 / BL1840B / BL1850 / BL1850B / BL1860B
• Some of the battery cartridges listed above may not be available depending on your region of residence.
WARNING: Only use the battery cartridges listed above. Use of any other battery cartridges may cause
injuryand/orre.
Saw chain, guide bar, and sprocket combination
Saw chain type 90PX
Number of drive links 33 40
Guide bar Guide bar length 200 mm 250 mm
Cutting length 180 mm 244 mm
Pitch 3/8″
Gauge 1.1 mm
Type Sprocket nose bar
Sprocket Number of teeth 6
Pitch 3/8″
Saw chain type 91PX
Number of drive links 40
Guide bar Guide bar length 250 mm
Cutting length 244 mm
Pitch 3/8″
Gauge 1.3 mm
Type Sprocket nose bar
Sprocket Number of teeth 6
Pitch 3/8″

3ENGLISH
Saw chain type 25AP
Number of drive links 60
Guide bar Guide bar length 250 mm
Cutting length 250 mm
Pitch 1/4″
Gauge 1.3 mm
Type Carving bar
Sprocket Number of teeth 9
Pitch 1/4″
NOTICE: When using 25AP saw chain, use with Sprocket 9 (optional accessory).
WARNING:Useappropriatecombinationoftheguidebarandsawchain.Otherwisepersonalinjurymay
result.
Symbols
The following show the symbols used for the equipment.
Be sure that you understand their meaning before use.
Read instruction manual.
Wear safety glasses.
Wear ear protection.
Wear a helmet, goggles and ear protection.
Use appropriate protection for foot-leg and
hand-arm.
This saw is to be used by properly trained
operators only.
Do not expose to moisture.
Maximum permissible cut length
Always use two hands when operating the
chain saw.
Direction of chain travel
Sawchainoiladjustment
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 imple-
mentation in accordance with national laws,
electric equipment and batteries and battery
pack(s) that have reached the end of their life
must be collected separately and returned to an
environmentally compatible recycling facility.
Intended use
The tool is intended for cutting branches and pruning
trees. It is also suitable for tree service.
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.

4ENGLISH
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.
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 off-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 off. 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 chil-
dren 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,
breakage of parts and any other condition that
may affect the power tool’s operation. If dam-
aged, 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 different 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.

5ENGLISH
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 instructions. Charging improp-
erlyorattemperaturesoutsidethespeciedrangemay
damagethebatteryandincreasetheriskofre.
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 Chain saw safety warnings
1. Keep all parts of the body away from the saw
chain when the chain saw is operating. Before
you start the chain saw, make sure the saw chain
is not contacting anything. A moment of inatten-
tion while operating chain saws may cause entan-
glement of your clothing or body with the saw chain.
2. Always hold the chain saw with your right
hand on the top handle and your left hand on
the front handle. Holding the chain saw with a
reversedhandcongurationincreasestheriskof
personalinjuryandshouldneverbedone.
3.
Hold the power tool by insulated gripping sur-
faces only, because the saw chain may contact
hidden wiring. Saw chains contacting a "live" wire
may make exposed metal parts of the power tool
"live" and could give the operator an electric shock.
4. Wear safety glasses and hearing protection.
Further protective equipment for head, hands,
legs and feet is recommended. Adequate protec-
tiveclothingwillreducepersonalinjurybyying
debris or accidental contact with the saw chain.
5. Always keep proper footing.
6.
When cutting a limb that is under tension be alert
for spring back.Whenthetensioninthewoodbres
is released the spring loaded limb may strike the
operator and/or throw the chain saw out of control.
7. Use extreme caution when cutting brush and sap-
lings. The slender material may catch the saw chain
and be whipped toward you or pull you off balance.
8. Carry the chain saw by the front handle with
the chain saw switched off and away from your
body. When transporting or storing the chain
saw always t the guide bar cover. Proper
handling of the chain saw will reduce the likelihood
of accidental contact with the moving saw chain.
9. Follow instructions for lubricating, chain ten-
sioning and changing accessories. Improperly
tensioned or lubricated chain may either break or
increase the chance for kickback.
10. Keep handles dry, clean, and free from oil and
grease. Greasy, oily handles are slippery causing
loss of control.
11. Cut wood only. Do not use chain saw for pur-
poses not intended. For example: do not use
chain saw for cutting plastic, masonry or non-
wood building materials. Use of the chain saw for
operations different than intended could result in a
hazardous situation.
12. Causes and operator prevention of kickback:
Kickback may occur when the nose or tip of the
guidebartouchesanobject,orwhenthewood
closes in and pinches the saw chain in the cut.
Tip contact in some cases may cause a sudden
reverse reaction, kicking the guide bar up and
back towards the operator. Pinching the saw chain
along the top of the guide bar may push the guide
bar rapidly back towards the operator. Either of
these reactions may cause you to lose control of
the saw which could result in serious personal
injury.Donotrelyexclusivelyuponthesafety
devices built into your saw. As a chain saw user,
you should take several steps to keep your cutting
jobsfreefromaccidentorinjury.
Kickback is the result of tool misuse and/or incor-
rect operating procedures or conditions and can be
avoided by taking proper precautions as given below:
• Maintainarmgrip,withthumbsandngers
encircling the chain saw handles, with both hands
on the saw and position your body and arm to allow
you to resist kickback forces. Kickback forces can
be controlled by the operator, if proper precautions
are taken. Do not let go of the chain saw.

6ENGLISH
• Do not overreach and do not cut above
shoulder height. This helps prevent unin-
tended tip contact and enables better control
of the chain saw in unexpected situations.
• Only use replacement bars and chains spec-
iedbythemanufacturer.Incorrectreplace-
ment bars and chains may cause chain
breakage and/or kickback.
• Follow the manufacturer’s sharpening and
maintenance instructions for the saw chain.
Decreasing the depth gauge height can lead
to increased kickback.
13. Before starting work, check that the chain
saw is in proper working order and that its
condition complies with the safety regulations.
Check in particular that:
• The chain brake is working properly;
• The run-down brake is working properly;
• Thebarandthesprocketcoveraretted
correctly;
• The chain has been sharpened and ten-
sioned in accordance with the regulations.
14.
Do not start the chain saw with the chain cover
being installed on it. Starting the chain saw with the
chain cover being installed on it may cause the chain
covertothrownoutforwardresultinginpersonalinjury
anddamagetoobjectsaroundtheoperator.
Top handle chainsaw specic safety
warnings
1. This chain saw is designed especially for tree
care and surgery. The chain saw is intended
to be used by properly trained persons only.
Observe all instructions, procedures and rec-
ommendations from the relevant professional
organization. Otherwise fatal accidents may
occur. It is recommend that always using a
rising platform (cherry picker, lift) for sawing
in trees. Rappelling techniques are extremely
dangerous and require special training. The
operators must be trained to become familiar
with safety equipment usage and climbing
techniques. Always use the appropriate belts,
ropes and carabiners when working in trees.
Always use restraining equipment for both the
operator and the saw.
2. Perform cleaning and maintenance before
storage in accordance with the instruction
manual.
3.
Ensure safe positioning of the chain saw during
car transportation to avoid fuel or chain oil leak-
age, damage to the tool and personal injury.
4. Regularly check the functionality of chain
brake.
5. Do not ll the chain oil near re. Never smoke
when you ll the chain oil.
6. National regulation may restrict the use of the
chain saw.
7. If the equipment gets heavy impact or fall,
check the condition before continuing work.
Check the controls and safety devices for mal-
function. If there is any damage or doubt, ask
our authorized service center for the inspec-
tion and repair.
8. Always activate the chain brake before starting
the chain saw.
9.
Hold the saw rmly in place to avoid skating (skid move-
ment) or bouncing of the saw when starting a cut.
10. At the end of the cut, be careful to keep your
balance due to the “drop”.
11. Take into account the direction and speed of
the wind. Avoid sawdust and chain oil mist.
Protective equipment
1. In order to avoid head, eye, hand or foot
injuries as well as to protect your hearing the
following protective equipment must be used
during operation of the chain saw:
—
The kind of clothing should be appropriate, i. e.
itshouldbetight-ttingbutnotbeahindrance.
Donotwearjewelryorclothingwhichcould
become entangled with bushes or shrubs. If
you have long hair, always wear a hairnet!
— It is necessary to wear a protective helmet
whenever working with the chain saw. The
protective helmet is to be checked in regu-
lar intervals for damage and is to be replaced
after 5 years at the latest. Use only approved
protective helmets.
— The face shield of the protective helmet (or
the goggles) protects against sawdust and
wood chips. During operation of the chain
saw always wear a goggle or a face shield to
preventeyeinjuries.
— Wear adequate noise protection equip-
ment (ear muffs, ear plugs, etc.)
— The protective jacket consists of 22 layers
of nylon and protects the operator against
cuts. It is always to be worn when working
from elevated platforms (cherry pickers,
lifts), from platforms mounted on ladders or
when climbing with ropes.
—
The protective brace and bib overall is made
of a nylon fabric with 22 layers and protects
against cuts. We strongly recommend its use.
— Protective gloves made of thick leather are part
of the prescribed equipment and must always be
worn during operation of the chain saw.
— During operation of the chain saw safety
shoes or safety bootsttedwithantiskid
sole, steel toe caps and protection for the
leg must always to be worn. Safety shoes
equipped with a protective layer provide
protection against cuts and ensure a secure
footing. For working in trees the safety boots
must be suitable for climbing techniques.
Vibration
1.
Individuals with poor circulation who are exposed to
excessivevibrationmayexperienceinjurytoblood
vessels or the nervous system. Vibration may cause
thefollowingsymptomstooccurinthengers,hands
or wrists: “Falling asleep” (numbness), tingling, pain,
stabbing sensation, alteration of skin colour or of the
skin. If any of these symptoms occur, see a phy-
sician!Toreducetheriskof“whitengerdisease”,
keep your hands warm during operation and well
maintain the equipment and accessories.
SAVE THESE INSTRUCTIONS.

7ENGLISH
WARNING: DO NOT let comfort or familiarity
with product (gained from repeated use) replace
strict adherence to safety rules for the subject
product. MISUSE or failure to follow the safety
rules stated in this instruction manual may cause
serious personal injury.
Important safety instructions for
battery cartridge
1. Before using battery cartridge, read all instruc-
tions and cautionary markings on (1) battery
charger, (2) battery, and (3) product using
battery.
2. Do not disassemble battery cartridge.
3. If operating time has become excessively
shorter, stop operating immediately. It may
result in a risk of overheating, possible burns
and even an explosion.
4. If electrolyte gets into your eyes, rinse them
out with clear water and seek medical atten-
tion right away. It may result in loss of your
eyesight.
5. Do not short the battery cartridge:
(1) Do not touch the terminals with any con-
ductive material.
(2) Avoid storing battery cartridge in a con-
tainer with other metal objects such as
nails, coins, etc.
(3) Do not expose battery cartridge to water
or rain.
A battery short can cause a large current
ow, overheating, possible burns and even a
breakdown.
6. Do not store the tool and battery cartridge in
locations where the temperature may reach or
exceed 50 °C (122 °F).
7. Do not incinerate the battery cartridge even if
it is severely damaged or is completely worn
out. The battery cartridge can explode in a re.
8. Be careful not to drop or strike battery.
9. Do not use a damaged battery.
10. The contained lithium-ion batteries are subject
to the Dangerous Goods Legislation require-
ments.
For commercial transports e.g. by third parties,
forwarding agents, special requirement on pack-
aging and labeling must be observed.
For preparation of the item being shipped, consult-
ing an expert for hazardous material is required.
Please also observe possibly more detailed
national regulations.
Tape or mask off open contacts and pack up the
battery in such a manner that it cannot move
around in the packaging.
11. Follow your local regulations relating to dis-
posal of battery.
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.
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).

8ENGLISH
PARTS DESCRIPTION
12 34
5
6
12
13
14
7
8
10
9
11
16
17
18
15
1Switch trigger 2Top handle 3Lock-off lever
4Front hand guard 5Guide bar 6Saw chain
7Chain catcher 8Retaining nut 9Chainadjustingscrew
10 Chip guide 11 Battery cartridge 12 Main power lamp
13 Main power switch 14 Adjustingscrew(foroilpump) 15 Carabiner
16 Front handle 17 Oil tank cap 18 Guide bar cover

9ENGLISH
FUNCTIONAL
DESCRIPTION
CAUTION: Always be sure that the tool is
switched off and the battery cartridge is removed
before adjusting or checking function on the tool.
Installing or removing battery
cartridge
CAUTION: Always switch off the tool before
installing or removing of the battery cartridge.
CAUTION: Hold the tool and the battery car-
tridge rmly when installing or removing battery
cartridge. Failure to hold the tool and the battery
cartridgermlymaycausethemtoslipoffyourhands
and result in damage to the tool and battery cartridge
andapersonalinjury.
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.
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 Off Blinking
75% to 100%
50% to 75%
25% to 50%
0% to 25%
Charge the
battery.
The battery
may have
malfunctioned.
NOTE: Depending on the conditions of use and the
ambient temperature, the indication may differ slightly
from the actual capacity.
Tool / battery protection system
The tool is equipped with a tool/battery protection sys-
tem. This system automatically cuts off power to the
motor to extend tool and battery life. The tool will auto-
matically stop during operation if the tool or battery is
placed under one of the following conditions:
Overload protection
When the battery is operated in a manner that causes
it to draw an abnormally high current, the tool automati-
cally stops and the main power lamp blinks in green. 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.

10 ENGLISH
Overheat protection
When the tool or battery is overheated, the tool stops automat-
ically and the main power lamp lights up in red. In this case, let
the tool and battery cool before turning the tool on again.
NOTE: In high temperature environment, the over-
heat protection likely to work and the tool stops
automatically.
Overdischarge protection
When the battery capacity is not enough, the tool stops
automatically and the main power lamp blinks in red. In
this case, remove the battery from the tool and charge
the battery.
Main power switch
WARNING: Always turn off the main power
switch when not in use.
To turn on the tool, press the main power switch until
the main power lamp lights up in green. To turn off,
press the main power switch again.
1
2
►1. Main power lamp 2. Main power switch
NOTE: The main power lamp blinks in green if the
switch trigger is pulled under unoperatable conditions.
The lamp blinks in one of the following conditions.
• When you turn on the main power switch while
holding down the lock-off lever and the switch
trigger.
• When you pull the switch trigger while the chain
brake is applied.
• When you release the chain brake while holding
down the lock-off lever and pulling the switch
trigger.
NOTE: This chain saw employs the auto power-off
function. To avoid unintentional start up, the main
power switch will automatically shut down when the
switch trigger is not pulled for a certain period after
the main power switch is turned on.
You can use the tool in the Torque Boost mode for
cutting thick branches or hard branches. To use the tool
in the Torque Boost mode, when the tool is turned off,
press the main power switch for a few seconds until the
main power lamp lights up in yellow.
NOTE:
You can use the tool in the Torque Boost mode up
to 60 seconds. Depending on the usage conditions, this
mode shifts to the normal mode in less than 60 seconds.
NOTE: If the main power lamp blinks in yellow when you press
the main power switch for a few seconds, the Torque Boost
mode is not available. In this case, follow the steps below.
• The Torque Boost mode is not available right after
the cutting operation. Wait for more than 10 sec-
onds, and then press the main power switch again.
• If you use the Torque Boost mode several times,
the use of the Torque Boost mode is restricted to
protect the battery. If the Torque Boost mode is
not available after waiting for more than 10 sec-
onds, replace the battery cartridge with a fully
charged one, or recharge the battery cartridge.
NOTE: If the main power lamp lights up in red or
blinks in red or green, refer to the instructions for tool/
battery protection system.
NOTE:
The Torque Boost mode cannot be used when the
battery cartridge BL1815N, BL1820, or BL1820B is installed.
Switch action
WARNING: For your safety, this tool is
equipped with lock-off lever which prevents the
tool from unintended starting. NEVER use the tool
if it runs when you simply pull the switch trigger
without pressing the lock-off lever. Return the
tool to our authorized service center for proper
repairs BEFORE further usage.
WARNING: NEVER tape down or defeat pur-
pose and function of lock-off lever.
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.
NOTICE: Do not pull the switch trigger hard with-
out pressing the lock-off lever. This can cause
switch breakage.
To prevent the switch trigger from being accidentally
pulled, a lock-off lever is provided. To start the tool,
depress the lock-off lever and pull the switch trigger.
The tool speed increases by increasing pressure on the
switch trigger. Release the switch trigger to stop.
1
2
►1. Switch trigger 2. Lock-off lever

11 ENGLISH
Checking the chain brake
CAUTION: Hold the chain saw with both
hands when switching it on. Hold the top handle
with your right hand, the front handle with your
left. The bar and the chain must not be in contact
with any object.
CAUTION: Should the saw chain not stop
immediately when this test is performed, the
saw may not be used under any circumstances.
Consult our authorized service center.
1. Press the lock-off lever, then pull the switch trig-
ger. The saw chain starts immediately.
2. Push the front hand guard forwards with the back
of your hand. Make sure that the chain saw comes to an
immediate standstill.
1
23
23
►1. Front hand guard 2. Unlocked position 3. Locked
position
Checking the run-down brake
CAUTION: If the saw chain does not stop
within two seconds in this test, stop using the
chain saw and consult our authorized service
center.
Run the chain saw then release the switch trigger com-
pletely. The saw chain must come to a standstill within
two seconds.
Adjusting the chain lubrication
Youcanadjusttheoilpumpfeedratewiththeadjusting
screw using the universal wrench. The amount of oil
canbeadjustedin3steps.
1
►1.Adjustingscrew
Carabiner (rope attachment point)
You can hang the tool by attaching the rope to the cara-
biner. Pull up the carabiner, and then tie it with the rope.
Electronic function
The tool is equipped with the electronic functions for
easy operation.
• Soft start
The soft-start function minimizes start-up shock,
and makes the tool start smoothly.
ASSEMBLY
CAUTION: Always be sure that the tool is
switched off and the battery cartridge is removed
before carrying out any work on the tool.
CAUTION: Do not touch the saw chain with
bare hands. Always wear gloves when handling
the saw chain.
Removing or installing saw chain
CAUTION: The saw chain and the guide bar
are still hot just after the operation. Let them cool
down enough before carrying out any work on
the tool.
CAUTION: Carry out the procedure of install-
ing or removing saw chain in a clean place free
from sawdust and the like.
To remove the saw chain, perform the following steps:
1. Release the chain brake by pulling the front hand
guard.

12 ENGLISH
2. Loosenthechainadjustingscrew,thentheretain-
ing nut.
12
►1.Chainadjustingscrew2. Retaining nut
3. Remove the sprocket cover then remove the saw
chain and guide bar from the chain saw body.
To install the saw chain, perform the following steps:
1. Check the direction of the saw chain. Match the
direction of the saw chain with that of the mark on the
chain saw body.
2. Fit one end of the saw chain on the top of the
guide bar.
3. Fit the other end of the saw chain around the
sprocket, then attach the guide bar to the chain saw
body, aligning the hole on the guide bar with the pin on
the chain saw body.
1
2
►1. Sprocket 2. Hole
4. Insert the protrusion on the sprocket cover to the
chain saw body, and then close the cover so that the
bolt and pins on the chain saw body meet their counter-
parts on the cover.
2
3
4
1
►1. Protrusion 2. Sprocket cover 3. Bolt 4. Pin
5. Tighten the retaining nut to secure the sprocket
cover,thenloosenitabitfortensionadjustment.
1
►1. Retaining nut
Adjusting saw chain tension
CAUTION: Do not tighten the saw chain too
much. Excessively high tension of saw chain may
cause breakage of saw chain, wear of the guide bar
andbreakageoftheadjustingdial.
CAUTION: A chain which is too loose can
jump off the bar and it may cause an injury
accident.
The saw chain may become loose after many hours
of use. From time to time check the saw chain tension
before use.
1. Release the chain brake by pulling the front hand
guard.

13 ENGLISH
2. Loosen the retaining nut a bit to loosen the
sprocket cover lightly.
1
►1. Retaining nut
3. Liftuptheguidebartipslightlyandadjustthe
chaintension.Turnthechainadjustingscrewclockwise
to tighten, turn it counterclockwise to loosen.
For chain blade 90PX and 91PX:
Tighten the saw chain until the lower side of the saw
chaintsintheguidebarrailasillustrated.
1
2
3
►1. Guide bar 2. Saw chain 3.Chainadjustingscrew
For chain blade 25AP:
Tighten the saw chain so that the gap between the cen-
ter of the lower side of the guide bar and the saw chain
becomes approximately 1 mm to 2 mm.
4. Keep holding the guide bar lightly and tighten the
sprocket cover.
For chain blade 90PX and 91PX:
Make sure that the saw chain does not loose at the
lower side.
For chain blade 25AP:
Make sure that the gap between the center of the lower
side of the guide bar and the saw chain is approximately
1 mm to 2 mm.
5. Tighten the retaining nut to secure the sprocket
cover.
1
►1. Retaining nut
Makesurethesawchaintssnuglyagainstthelower
side of the bar.
Spike bumper
Optional accessory
When cutting thick branches, using the spike bumper is
recommended. To install the spike bumper, perform the
following steps:
1. Remove the sprocket cover, saw chain, and guide
bar.
2. Align the holes of the spike bumper with the holes
on the chain saw body, and then tighten the screws
rmly.
12
►1. Screw 2. Spike bumper

14 ENGLISH
OPERATION
Lubrication
Saw chain is automatically lubricated when the tool is in
operation. Check the amount of remaining oil in the oil
tank periodically through the oil inspection window.
Torellthetank,laythechainsawonitssideand
remove the oil tank cap. The proper amount of oil is 140
ml.Afterrellingthetank,makesurethattheoiltank
cap is tightened securely.
1
2
►1. Oil tank cap 2. Oil inspection window
Afterrelling,holdthechainsawawayfromthe
tree. Start it and wait until lubrication on saw chain is
adequate.
NOTICE: When lling the chain oil for the rst
time, or relling the tank after it has been com-
pletely emptied, add oil up to the bottom edge of
the ller neck. The oil delivery may otherwise be
impaired.
NOTICE: Use the saw chain oil exclusively for
Makita chain saws or equivalent oil available in
the market.
NOTICE: Never use oil including dust and parti-
cles or volatile oil.
NOTICE: When pruning trees, use botanical oil.
Mineral oil may harm trees.
NOTICE: Before the cutting operation, make sure
that the provided oil tank cap is screwed in place.
WORKING WITH THE CHAIN SAW
CAUTION: The rst time user should, as a mini-
mum practice, do cutting logs on a saw-horse or cradle.
CAUTION: When sawing precut timber, use a
safe support (saw horse or cradle). Do not steady
the workpiece with your foot, and do not allow
anyone else to hold or steady it.
CAUTION: Secure round pieces against rotation.
CAUTION: Keep all parts of the body away
from the saw chain when the motor is operating.
CAUTION: Hold the chain saw rmly with
both hands when the motor is running.
CAUTION: Do not overreach. Keep proper
footing and balance at all times.
NOTICE: Never toss or drop the tool.
NOTICE: Do not cover the vents of the tool.
Pruning trees
Bring the chain saw body into contact with the branch to
be cut before switching on. Otherwise it may cause the
guidebartowobble,resultingininjurytooperator.Saw
thewoodtobecutbyjustmovingitdownbyusingthe
weight of the chain saw.
If you cannot cut the timber right through with a single stroke:
Apply light pressure to the handle and continue sawing
and draw the chain saw back a little.

15 ENGLISH
Whencuttingthickbranches,rstmakeashallow
undercutandthenmakethenishcutfromthetop.
1
2
If you try to cut off thick branches from the bottom, the
branch may close in and pinch the saw chain in the cut.
If you try to cut off thick branches from the top without a
shallow undercut, the branch may splinter.
Bucking
1. Rest the chain saw body on the wood to be cut.
2. With the saw chain running, saw into the wood
while using the top handle to raise the saw and the front
one to guide it.
3. Continue the cut by applying slight pressure to the
top handle, easing the saw back slightly.
NOTICE: When making several cuts, switch the
chain saw off between cuts.
CAUTION: If the upper edge of the bar is used
for cutting, the chain saw may be deected in
your direction if the chain becomes trapped. For
this reason, cut with the lower edge, so that the
saw will be deected away from your body.
When you cut a wood under tension, cut the pressured
side(A)rst.Thenmakethenalcutfromthetensioned
side (B). This prevents the bar from becoming trapped.
A
B
A
B
Limbing
CAUTION: Limbing may only be performed by
trained persons. A hazard is presented by the risk
of kickback.
When limbing, support the chain saw on the trunk if
possible. Do not cut with the tip of the bar, as this pres-
ents a risk of kickback.
Pay particular attention to branches under tension. Do
not cut unsupported branches from below.
Do not stand on the felled trunk when limbing.

16 ENGLISH
Carrying tool
Before carrying the tool, always apply the chain brake
and remove the battery cartridges from the tool. Then
attach the guide bar cover. Also cover the battery car-
tridge with the battery cover.
1
2
►1. Guide bar cover 2. Battery cover
MAINTENANCE
CAUTION: Always be sure that the tool is
switched off and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
CAUTION: Always wear gloves when perform-
ing any 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.
Sharpening the saw chain
Sharpen the saw chain when:
• Mealy sawdust is produced when damp wood is
cut;
• Thechainpenetratesthewoodwithdifculty,even
when heavy pressure is applied;
• The cutting edge is obviously damaged;
• The saw pulls to the left or right in the wood.
(caused by uneven sharpening of the saw chain or
damage to one side only)
Sharpen the saw chain frequently but a little each time.
Twoorthreestrokeswithaleareusuallysufcientfor
routine resharpening. When the saw chain has been
resharpened several times, have it sharpened in our
authorized service center.
Sharpening criteria:
WARNING: An excessive distance between
the cutting edge and depth gauge increases the
risk of kickback.
22
11
31
►1. Cutter length 2. Distance between cutting edge
and depth gauge 3. Minimum cutter length (3 mm)
— All cutter length must be equal. Different cutter
lengths prevent the saw chain from running
smoothly and may cause the saw chain to break.
— Do not sharpen the chain when the cutter length
has reached 3 mm or shorter. The chain must be
replaced with new one.
— The chip thickness is determined by the distance
between the depth gauge (round nose) and the
cutting edge.
— The best cutting results are obtained with following
distance between cutting edge and depth gauge.
• Chain blade 90PX : 0.65 mm
• Chain blade 91PX : 0.65 mm
• Chain blade 25AP : 0.65 mm
30
30
55 55
— The sharpening angle of 30° must be the same on
all cutters. Different cutter angles cause the chain
to run roughly and unevenly, accelerate wear, and
lead to chain breaks.
— Useasuitableroundlesothatthepropersharp-
ening angle is kept against the teeth.
• Chain blade 90PX : 55°
• Chain blade 91PX : 55°
• Chain blade 25AP : 55°

17 ENGLISH
File and le guiding
— Useaspecialroundle(optionalaccessory)for
saw chains to sharpen the chain. Normal round
lesarenotsuitable.
— Diameteroftheroundleforeachsawchainisas
follows:
• Chain blade 90PX : 4.5 mm
• Chain blade 91PX : 4.0 mm
• Chain blade 25AP : 4.0 mm
— Theleshouldonlyengagethecutteronthefor-
wardstroke.Lifttheleoffthecutteronthereturn
stroke.
— Sharpentheshortestcutterrst.Thenthelength
of this shortest cutter becomes the standard for all
other cutters on the saw chain.
— Guidetheleasshowninthegure.
1
2
►1. File 2. Saw chain
— Thelecanbeguidedmoreeasilyifaleholder
(optionalaccessory)isemployed.Theleholder
has markings for the correct sharpening angle of
30° (align the markings parallel to the saw chain)
and limits the depth of penetration (to 4/5 of the
lediameter).
30
1/5
1
►1. File holder
— After sharpening the chain, check the height of the
depth gauge using the chain gauge tool (optional
accessory).
— Removeanyprojectingmaterial,howeversmall,
withaspecialatle(optionalaccessory).
— Round off the front of the depth gauge again.
Cleaning the guide bar
Chips and sawdust will build up in the guide bar groove.
Theymayclogthebargrooveandimpairtheoilow.
Clean out the chips and sawdust every time when you
sharpen or replace the saw chain.
Cleaning the sprocket cover
Chips and saw dust will accumulate inside of the
sprocket cover. Remove the sprocket cover and saw
chain from the tool then clean the chips and saw dust.

18 ENGLISH
Cleaning the oil discharge hole
Small dust or particles may be built up in the oil dis-
charge hole during operation. These dust or particles
mayimpairtheoiltoowandcauseaninsufcient
lubrication on the whole saw chain. When a poor chain
oil delivery occurs at the top of guide bar, clean the oil
discharge hole as follows.
1. Remove the sprocket cover and saw chain from
the tool.
2. Remove the small dust or particles using a slotted
screwdriver with a slender shaft or the like.
1
2
►1. Slotted screwdriver 2. Oil discharge hole
3. Insert the battery cartridge into the tool. Pull the
switchtriggertoowbuilt-updustorparticlesofftheoil
discharge hole by discharging chain oil.
4. Remove the battery cartridge from the tool.
Reinstall the sprocket cover and saw chain on the tool.
Replacing the sprocket
CAUTION: A worn sprocket will damage a
new saw chain. Have the sprocket replaced in this
case.
Beforettinganewsawchain,checktheconditionof
the sprocket.
1
2
►1. Sprocket 2. Areas to be worn out
Alwaystanewlockingringwhenreplacingthesprocket.
1
2
►1. Locking ring 2. Sprocket
NOTICE: Make sure that the sprocket is installed
as shown in the gure.
Storing the tool
1. Clean the tool before storing. Remove any chips and
sawdust from the tool after removing the sprocket cover.
2. After cleaning the tool, run it under no load to lubri-
cate the saw chain and guide bar.
3. Cover the guide bar with the guide bar cover.
4. Empty the oil tank.
Instructions for periodic maintenance
To ensure long life, prevent damage and ensure the full functioning of the safety features, the following maintenance must
be performed regularly. Warranty claims can be recognized only if this work is performed regularly and properly. Failure to
perform the prescribed maintenance work can lead to accidents! The user of the chain saw must not perform maintenance
work which is not described in the instruction manual. All such work must be carried out by our authorized service center.
Check item / Operating time Before
operation
Everyday Every week Every 3
month
Annually Before
storage
Chain saw Inspection. -----
Cleaning. -----
Check at
authorized
service center.
----

19 ENGLISH
Check item / Operating time Before
operation
Everyday Every week Every 3
month
Annually Before
storage
Saw chain Inspection. -----
Sharpening if
necessary.
-----
Guide bar Inspection. ----
Remove from
the chain saw.
-----
Chain brake Check the
function.
-----
Have it
inspected
regularly at
authorized
service center.
--- - -
Chain
lubrication
Check the oil
feed rate.
-----
Switch trigger Inspection. -----
Lock-off lever Inspection. -----
Oil tank cap Check
tightness.
-----
Chain catcher Inspection. - - ---
Screws and
nuts
Inspection. - - ---
TROUBLESHOOTING
Beforeaskingforrepairs,conductyourowninspectionrst.Ifyound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.
Malfunction status Cause Action
The chain saw does not start. Battery cartridge is not installed. Install a charged battery cartridge.
Battery problem (low voltage). Recharge the battery cartridges. If recharg-
ing is not effective, replace the battery
cartridge.
Main power switch is off. The chain saw is automatically turned off if
it is un-operated for a certain period. Turn
on the main power switch again.
The saw chain does not run. Chain brake activated. Release chain brake.
The motor stops running after a little use. Battery's charge level is low. Recharge the battery cartridges. If recharg-
ing is not effective, replace the battery
cartridge.
No oil on the chain. Oil tank is empty. Fill the oil tank.
Oil guide groove is dirty. Clean the groove.
Poor oil delivery. Adjusttheamountofoildeliverywiththe
adjustingscrew.
The chain saw does not reach maximum
RPM.
Battery cartridge is installed improperly. Install the battery cartridges as described
in this manual.
Battery power is dropping. Recharge the battery cartridge. If recharg-
ing is not effective, replace the battery
cartridge.
The drive system does not work correctly. Ask the authorized service center in your
region for repair.
The main power lamp is blinking in green. Switch trigger is pulled under an unoperat-
able condition.
Pull the switch trigger after the main power
switch is turned on and the chain brake is
released.

Malfunction status Cause Action
Chain does not stop even the chain brake
is activated:
Stop the machine immediately!
The brake band is worn down. Ask the authorized service center in your
region for repair.
Abnormal vibration:
Stop the machine immediately!
Loose guide bar or saw chain. Adjusttheguidebarandsawchain
tension.
Tool malfunction. Ask the authorized service center in your
region for repair.
The Torque Boost mode is not available
after replacing the battery cartridge with a
fully charged one.
Depending on the usage conditions, the
Torque Boost mode is not available after
replacing the battery cartridge.
Use the tool in the normal mode until the
installed battery cartridge becomes empty,
and then replace the battery cartridge with
a fully charged one, or recharge the battery
cartridge.
OPTIONAL ACCESSORIES
CAUTION: These accessories or attachments
are recommended for use with your Makita tool spec-
ied in this manual. The use of any other accessories
orattachmentsmightpresentariskofinjurytopersons.
Only use accessory or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Saw chain
• Guide bar
• Guide bar cover
• Sprocket
• Spike bumper
• File
• Tool bag
• Makita genuine battery and charger
WARNING :If you purchase a guide bar of dif-
ferent length from the standard guide bar, also pur-
chase a suitable guide bar cover together. It must t
and fully cover the guide bar on the chain saw.
NOTE: Some items in the list may be included in the
tool package as standard accessories. They may
differ from country to country.
Makita Corporation
www.makita.com
885630B6
EN
20171222