Makita UC003G User manual

INSTRUCTION MANUAL
Cordless Chain Saw
UC002G
UC003G
UC004G
UC006G
ENGLISH: Original instructions
Read before use.

2ENGLISH
SPECIFICATIONS
Model: UC002G UC003G UC004G UC006G
Overall length
(without guide bar and battery)
266 mm
Rated voltage D.C. 36 V - 40 V max
Net weight *1 2.6 kg
*2 3.8 - 4.5 kg 3.9 - 4.6 kg 4.0 - 4.7 kg 3.9 - 4.5 kg
Standard guide bar length 250 mm 300 mm 350 mm 250 mm
Recommended guide bar
length
with 90PX 250 - 350 mm -
with 91PX 250 - 350 mm -
with 25AP -250 mm
Applicable saw chain type
(refer to the table below)
90PX
91PX
25AP
Standard sprocket Number of teeth 6 9
Pitch 3/8″ 1/4″
Chain speed 0 - 24.8 m/s
(0 - 1,490 m/min)
Chain oil tank volume 200 cm3
Protection degree IPX4
• 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.
*1: Weight, without the saw chain, guide bar, guide bar cover, oil and battery cartridge(s).
*2:Thelightestandheaviestcombinationofweight,accordingtoEPTA-Procedure01/2014.Theweightmaydi󰀨er
depending on the attachment(s), including the battery cartridge(s).
Applicable battery cartridge and charger
Battery cartridge BL4020 / BL4025* / BL4040* / BL4050F
* : Recommended battery
Charger DC40RA / DC40RB / DC40RC
• Some of the battery cartridges and chargers listed above may not be available depending on your region of
residence.
WARNING: Only use the battery cartridges and chargers listed above. Use of any other battery cartridges
andchargersmaycauseinjuryand/orre.
NOTE: We recommend using the recommended batteries to fully obtain the performance of this tool.
Saw chain, guide bar, and sprocket combination
Saw chain type 90PX
Number of drive links 40 46 52
Guide bar Guide bar length 250 mm 300 mm 350 mm
Cutting length 225 mm 281 mm 337 mm
Pitch 3/8″
Gauge 1.1 mm
Type Sprocket nose bar
Sprocket Number of teeth 6
Pitch 3/8″

3ENGLISH
Saw chain type 91PX
Number of drive links 40 46 52
Guide bar Guide bar length 250 mm 300 mm 350 mm
Cutting length 225 mm 281 mm 337 mm
Pitch 3/8″
Gauge 1.3 mm
Type Sprocket nose bar
Sprocket Number of teeth 6
Pitch 3/8″
Saw chain type 25AP
Number of drive links 60
Guide bar Guide bar length 250 mm
Cutting length 239 mm
Pitch 1/4″
Gauge 1.3 mm
Type Carving bar
Sprocket Number of teeth 9
Pitch 1/4″
WARNING:Useappropriatecombinationoftheguidebarandsawchain.Otherwisepersonalinjurymay
result.
Symbols
The followings show the symbols which may be used
for the equipment. Be sure that you understand their
meaning before use.
Read instruction manual.
Wear safety glasses.
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.
Beware of chain saw kickback and avoid
contact with bar tip.
Direction of chain travel
Sawchainoiladjustment
Ni-MH
Li-ion
Only for EU countries
Due to the presence of hazardous com-
ponents in the equipment, waste electrical
and electronic equipment, accumulators
and batteries may have a negative impact
on the environment and human health.
Do not dispose of electrical and electronic
appliances or batteries with household
waste!
In accordance with the European Directive
on waste electrical and electronic equip-
ment and on accumulators and batteries
and waste accumulators and batteries,
as well as their adaptation to national law,
waste electrical equipment, batteries and
accumulators should be stored separately
and delivered to a separate collection point
for municipal waste, operating in accor-
dance with the regulations on environmen-
tal protection.
This is indicated by the symbol of the
crossed-out wheeled bin placed on the
equipment.
Guaranteed sound power level according
to EU Outdoor Noise Directive.
Sound power level according to Australia
NSW Noise Control Regulation.
Intended use
The tool is intended for cutting branches and pruning
trees. It is also suitable for tree service.

4ENGLISH
Noise
The typical A-weighted noise level determined accord-
ing to EN62841-1 and EN ISO 11681-2 as applicable:
Model UC002G
Sound pressure level (LpA) : 90 dB(A)
Sound power level (LWA) : 101 dB (A)
Uncertainty (K) : 3 dB(A)
Model UC003G
Sound pressure level (LpA) : 90 dB(A)
Sound power level (LWA) : 101 dB (A)
Uncertainty (K) : 3 dB(A)
Model UC004G
Sound pressure level (LpA) : 90 dB(A)
Sound power level (LWA) : 101 dB (A)
Uncertainty (K) : 3 dB(A)
Model UC006G
Sound pressure level (LpA) : 88 dB(A)
Sound power level (LWA) : 99 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.
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 EN62841-1 and EN ISO 11681-2 as
applicable:
Model UC002G
Work mode: cutting wood
Vibration emission (ah,W) : 5.0 m/s2
Uncertainty (K) : 1.5 m/s2
Model UC003G
Work mode: cutting wood
Vibration emission (ah,W) : 5.0 m/s2
Uncertainty (K) : 1.5 m/s2
Model UC004G
Work mode: cutting wood
Vibration emission (ah,W) : 5.0 m/s2
Uncertainty (K) : 1.5 m/s2
Model UC006G
Work mode: cutting wood
Vibration emission (ah,W) : 2.8 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.

5ENGLISH
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.
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 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 a󰀨ect 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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.

6ENGLISH
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 con-
tact accidentally occurs, ush with water. If
liquid contacts 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.
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
inattention while operating chain saws may cause
entanglement 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
surfaces only, because the saw chain may con-
tact 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
saplings. The slender material may catch the saw
chainandbewhippedtowardyouorpullyouo󰀨
balance.
8. Carry the chain saw by the front handle with
the chain saw switched o󰀨 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di󰀨erent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.

7ENGLISH
Fig.1
• 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.
Additional Safety Instructions
Operation
1. When you use the tool on muddy ground, wet
slope, or slippery place, pay attention to your
footing.
2. Do not submerge the tool into a puddle.
3. Do not leave the tool unattended outdoors in
the rain.
Electrical and battery safety
1. Avoid dangerous environment. Don't use the
tool in dump or wet locations or expose it to
rain. Water entering the tool will increase the risk
of electric shock.
2. Do not dispose of the battery(ies) in a re.
The cell may explode. Check with local codes for
possible special disposal instructions.
3. Do not open or mutilate the battery(ies).
Released electrolyte is corrosive and may cause
damage to the eyes or skin. It may be toxic if
swallowed.
4. Do not charge battery in rain, or in wet
locations.
5. Do not charge the battery outdoors.
6. Do not handle charger, including charger plug,
and charger terminals with wet hands.
7. Do not replace the battery in the rain.
Maintenance and storage
1. When storing the tool, avoid direct sunlight
and rain, and store it in a place where it does
not get hot or humid.
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 leakage, 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 movement) 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.

8ENGLISH
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mu󰀨s,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 recom-
mend 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”(numb-
ness), tingling, pain, stabbing sensation, alteration
of skin colour or of the skin. If any of these symp-
toms occur, see a physician! To reduce the risk
of“whitengerdisease”,keepyourhandswarm
during operation and well maintain the equipment
and accessories.
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 char-
ger, (2) battery, and (3) product using battery.
2. Do not disassemble or tamper with the battery car-
tridge.Itmayresultinare,excessiveheat,orexplosion.
3. If operating time has become excessively
shorter, stop operating immediately. It may
result in a risk of overheating, possible burns
and even an explosion.
4.
If electrolyte gets into your eyes, rinse them out
with clear water and seek medical attention right
away. It may result in loss of your eyesight.
5. Do not short the battery cartridge:
(1) Do not touch the terminals with any 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, over-
heating, possible burns and even a breakdown.
6. Do not store and use the tool and battery car-
tridge in locations where the temperature may
reach or exceed 50 °C (122 °F).
7. Do not incinerate the battery cartridge even if
it is severely damaged or is completely worn
out. The battery cartridge can explode in a re.
8. Do not nail, cut, crush, throw, drop the battery
cartridge, or hit against a hard object to the
battery cartridge. Such conduct may result in a
re,excessiveheat,orexplosion.
9. Do not use a damaged battery.
10.
The contained lithium-ion batteries are subject to
the Dangerous Goods Legislation requirements.
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, consulting an
expert for hazardous material is required. Please also
observe possibly more detailed national regulations.
Tapeormasko󰀨opencontactsandpackupthe
battery in such a manner that it cannot move
around in the packaging.
11. When disposing the battery cartridge, remove
it from the tool and dispose of it in a safe
place. Follow your local regulations relating to
disposal of battery.
12. Use the batteries only with the products
specied by Makita. Installing the batteries to
non-compliantproductsmayresultinare,exces-
sive heat, explosion, or leak of electrolyte.
13. If the tool is not used for a long period of time,
the battery must be removed from the tool.
14. During and after use, the battery cartridge may
take on heat which can cause burns or low
temperature burns. Pay attention to the han-
dling of hot battery cartridges.
15. Do not touch the terminal of the tool imme-
diately after use as it may get hot enough to
cause burns.

9ENGLISH
16. Do not allow chips, dust, or soil stuck into the
terminals, holes, and grooves of the battery
cartridge.Itmaycauseheating,catchingre,
burst and malfunction of the tool or battery car-
tridge,resultinginburnsorpersonalinjury.
17.
Unless the tool supports the use near high-voltage elec-
trical power lines, do not use the battery cartridge near a
high-voltage electrical power lines. It may result in a mal-
function or breakdown of the tool or battery cartridge.
18. Keep the battery away from children.
SAVE THESE INSTRUCTIONS.
CAUTION: Only use genuine Makita batteries.
Use of non-genuine Makita batteries, or batteries that
have been altered, may result in the battery bursting
causingres,personalinjuryanddamage.Itwillalso
void the Makita warranty for the Makita tool and charger.
Tips for maintaining maximum
battery life
1. Charge the battery cartridge before completely
discharged. Always stop tool operation and
charge the battery cartridge when you notice
less tool power.
2.
Never recharge a fully charged battery cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room tempera-
ture at 10 °C - 40 °C (50 °F - 104 °F). Let a hot
battery cartridge cool down before charging it.
4. When not using the battery cartridge, remove
it from the tool or the charger.
5. Charge the battery cartridge if you do not use
it for a long period (more than six months).
PARTS DESCRIPTION
312
56
11
12
14
7
89
10
1617
19
15
13
4
18
Fig.2
1Top handle 2Lock-o󰀨lever 3Switch trigger
4Front hand guard 5Guide bar 6Saw chain
7Chain catcher 8Retaining nut 9Chainadjustingscrew
10 Battery cartridge 11 Main power lamp 12 Main power switch
13 Cap 14 Adjustingscrew(foroilpump) 15 Carabiner
16 Front handle 17 Oil tank cap 18 Spike bumper
19 Guide bar cover ----

10 ENGLISH
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
1
2
3
Fig.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 as
showninthegure,itisnotlockedcompletely.
CAUTION: Always install the battery cartridge
fully until the red indicator cannot be seen. If not,
itmayaccidentallyfalloutofthetool,causinginjuryto
you or someone around you.
CAUTION: Do not install the battery cartridge
forcibly. If the cartridge does not slide in easily, it is
not being inserted correctly.
Indicating the remaining battery capacity
Press the check button on the battery cartridge to indi-
cate the remaining battery capacity. The indicator lamps
light up for a few seconds.
1
2
Fig.4
►1. Indicator lamps 2. Check button
Indicator lamps Remaining
capacity
Lighted O󰀨 Blinking
75% to 100%
50% to 75%
25% to 50%
0% to 25%
Charge the
battery.
The battery
may have
malfunctioned.
NOTE: Depending on the conditions of use and the
ambienttemperature,theindicationmaydi󰀨erslightly
from the actual capacity.
NOTE:Therst(farleft)indicatorlampwillblinkwhen
the battery protection system works.
Tool / battery protection system
The tool is equipped with a tool/battery protection sys-
tem.Thissystemautomaticallycutso󰀨powertothe
motor to extend tool and battery life. The tool will auto-
matically stop during operation if the tool or battery is
placed under one of the following conditions:
Overload protection
When the 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o󰀨andstoptheapplication
that caused the tool to become overloaded. Then turn
the tool on to restart.

11 ENGLISH
Overheat protection
When the tool or battery is overheated, the tool stops
automatically 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.
Protections against other causes
Protection system is also designed for other causes
that could damage the tool and allows the tool to stop
automatically. Take all the following steps to clear the
causes, when the tool has been brought to a temporary
halt or stop in operation.
1. Turnthetoolo󰀨,andthenturnitonagainto
restart.
2. Charge the battery(ies) or replace it/them with
recharged battery(ies).
3. Let the machine and battery(ies) cool down.
If no improvement can be found by restoring protection
system, then contact your local Makita Service Center.
NOTICE: If the tool stops due to a cause
not described above, refer to the section for
troubleshooting.
Main power switch
WARNING: Always turn o󰀨 the main power
switch when not in use.
To turn on the tool, press the main power switch. The
mainpowerlamplightsupingreen.Toturno󰀨,press
the main power switch again.
1
2
Fig.5
►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 hold-
ingdownthelock-o󰀨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-o󰀨leverandpullingtheswitchtrigger.
NOTE:Thistoolemploystheautopower-o󰀨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.
Switch action
WARNING: For your safety, this tool is
equipped with lock-o󰀨 lever which prevents the
tool from unintended starting. NEVER use the tool
if it runs when you simply pull the switch trigger
without pressing the lock-o󰀨 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-o󰀨 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-o󰀨 lever. This can cause
switch breakage.
NOTE: When you keep pulling the switch trigger while
the tool is under almost no load, the rotation speed of
the tool decreases and the main power lamp blinks
in green. In this case, release the switch trigger, and
then pull the switch trigger again.
To prevent the switch trigger from being accidentally
pulled,alock-o󰀨leverisprovided.Tostartthetool,
depressthelock-o󰀨leverandpulltheswitchtrigger.
The tool speed increases by increasing pressure on the
switch trigger. Release the switch trigger to stop.
2
1
Fig.6
►1. Switch trigger 2.Lock-o󰀨lever

12 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 guide bar and the saw chain must not be
in contact with any object.
CAUTION: Should the saw chain not stop
immediately when this test is performed, the
chain saw may not be used under any circum-
stances. Consult our authorized service center.
1. Pressthelock-o󰀨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.
32
1
23
Fig.7
►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.Openthecaptoadjustthe
adjustingscrew.
2
1
Fig.8
►1. Cap 2.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.
1
Fig.9
►1. Carabiner
Spike bumper
The tool is equipped with the spike bumper as stan-
dard. For replacement of the spike bumper, ask Makita
Authorized Service Centers.
When you perform the cutting operation, engage the
spike bumper with the trunk and use it as a lever.
Electronic function
The tool is equipped with the electronic functions for
easy operation.
• Electric brake
This tool is equipped with an electric brake. If
the tool consistently fails to quickly stop after the
switch trigger is released, have the tool serviced at
a Makita service center.

13 ENGLISH
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.
CAUTION: Do not touch the saw chain with
bare hands. Always wear gloves when handling
the saw chain.
Installing or removing 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.
Installing the saw chain
To install the saw chain, perform the following steps:
1.
Release the chain brake by pulling the front hand guard.
2. Loosenthechainadjustingscrew,thentheretainingnut.
231
Fig.10
►
1. Sprocket cover 2.Chainadjustingscrew3. Retaining nut
3. Remove the sprocket cover.
4. Check the direction of the saw chain. Match the
direction of the saw chain with that of the mark on the
chain saw body.
1
Fig.11
►1. Mark on chain saw body
5.
Fit one end of the saw chain on the top of the guide bar.
6. 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.
21
Fig.12
►1. Sprocket 2. Hole
7. Insert the protrusion and the pin on the sprocket
cover to the chain saw body, and then close the cover
so that the bolt and pin on the chain saw body meet
their counterparts on the cover.
1
4
2
3
4
Fig.13
►1. Protrusion 2. Sprocket cover 3. Bolt 4. Pin
8. Tighten the retaining nut to secure the sprocket
cover,thenloosenitabitfortensionadjustment.
1
Fig.14
►1. Retaining nut

14 ENGLISH
Afterinstallingthesawchain,adjustthesawchain
tensionbyreferringtothesectionforadjustingsaw
chain tension.
Removing the saw chain
To remove the saw chain, perform the following steps:
1. Release the chain brake by pulling the front hand
guard.
2. Loosenthechainadjustingscrew,thentheretain-
ing nut.
12
Fig.15
►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.
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 and wear of the guide
bar.
CAUTION: A chain which is too loose can
jump o󰀨 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.
2. Loosen the retaining nut a bit to loosen the
sprocket cover lightly.
1
Fig.16
►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.
3
2
1
Fig.17
►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
Fig.18
►1. Retaining nut

15 ENGLISH
OPERATION
Lubrication
NOTICE: When lling the chain oil for the rst time,
or relling the tank after it has been completely emp-
tied, 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.
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.
1
2
Fig.19
►1. Oil tank cap 2. Oil inspection window
Torellthetank,laythechainsawonitsside,thenpushthe
button on the oil tank cap so that the button on the other side
stands up, and then remove the oil tank cap by turning it.
Theproperamountofoilis200ml.Afterrellingthetank,
make sure that the oil tank cap is tightened securely.
1
23
Fig.20
►1. Oil tank cap 2. Tighten 3. Loosen
NOTE:Ifitisdi󰀩culttoremovetheoiltankcap,
insert the box wrench into the slot of the oil tank
cap, and then remove the oil tank cap by turning it
counterclockwise.
1
2
Fig.21
►1. Slot 2. Box wrench
Afterrelling,holdthechainsawawayfromthe
tree. Start it and wait until lubrication on saw chain is
adequate.
Fig.22
Working with the chain saw
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.

16 ENGLISH
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.
Fig.23
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.
Fig.24
Whencuttingthickbranches,rstmakeashallow
undercutandthenmakethenishcutfromthetop.
1
2
Fig.25
Ifyoutrytocuto󰀨thickbranchesfromthebottom,the
branch may close in and pinch the saw chain in the cut.
Ifyoutrytocuto󰀨thickbranchesfromthetopwithouta
shallow undercut, the branch may splinter.
Fig.26
Carrying tool
Before carrying the tool, always apply the chain brake
and remove the battery cartridge from the tool. Then
attach the guide bar cover. Also cover the battery car-
tridge with the battery cover.
2
1
Fig.27
►1. Guide bar cover 2. Battery cover
MAINTENANCE
CAUTION: Always be sure that the tool is
switched o󰀨 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.

17 ENGLISH
Sharpening the saw chain
Sharpen the saw chain when:
•
Mealy sawdust is produced when damp wood is cut;
• Thechainpenetratesthewoodwithdi󰀩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su󰀩cientforroutine
resharpening. When the saw chain has been resharpened sev-
eral 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
Fig.28
►1. Cutter length 2. Distance between cutting edge
and depth gauge 3. Minimum cutter length (3 mm)
— Allcutterlengthmustbeequal.Di󰀨erent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
Fig.29
— The sharpening angle of 30° must be the same on
allcutters.Di󰀨erent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°
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o󰀨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
Fig.30
►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
Fig.31
►1. File holder

18 ENGLISH
— After sharpening the chain, check the height of the
depth gauge using the chain gauge tool (optional
accessory).
Fig.32
— Removeanyprojectingmaterial,howeversmall,
withaspecialatle(optionalaccessory).
— Roundo󰀨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.
Fig.33
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.
Fig.34
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insu󰀩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 or the like.
1
2
Fig.35
►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o󰀨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
Fig.36
►1. Sprocket 2. Areas to be worn out

19 ENGLISH
Alwaystanewlockingringwhenreplacingthe
sprocket.
1
2
Fig.37
►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 prop-
erly. 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.
----
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-o󰀨lever Inspection. -----
Oil tank cap Check
tightness.
-----
Chain catcher Inspection. - - ---
Screws and
nuts
Inspection. - - ---

20 ENGLISH
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 cartridge. If recharg-
ingisnote󰀨ective,replacethebattery
cartridge.
Mainpowerswitchiso󰀨. Thechainsawisautomaticallyturnedo󰀨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 cartridge. If recharg-
ingisnote󰀨ective,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 cartridge as described in
this manual.
Battery power is dropping. Recharge the battery cartridge. If recharg-
ingisnote󰀨ective,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.
Chain does not stop even the chain brake
is activated:
Stop the tool immediately!
The brake band is worn down. Ask the authorized service center in your
region for repair.
Abnormal vibration:
Stop the tool 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 saw chain cannot be installed. The combination of saw chain and
sprocket is not correct.
Use the correct combination of saw chain
and sprocket by referring to the section for
specications.