Makita GCU05 User manual

INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
Cordless Chain Saw
Electrosierra Inalámbrica
GCU05
GCU06
IMPORTANT: Read Before Using.
IMPORTANTE: Lea antes de usar.

2ENGLISH
ENGLISH (Original instructions)
SPECIFICATIONS
Model: GCU05 GCU06
Overall length
(without guide bar)
445 mm (17-1/2″)
Rated voltage D.C. 36 V - 40 V max
Net weight *1 4.5 kg (9.9 lbs)
*2 6.3 - 7.4 kg (13.9 - 16.3 lbs)
Standard guide bar length 400 mm (16″) 450 mm (18″)
Recommended guide bar length 400 - 450 mm
(16″ - 18")
Applicable saw chain type
(refer to the table below)
91PX
80TXL
Sprocket
(91PX)
Number of teeth 6
Pitch 3/8″
Sprocket
(80TXL)
Number of teeth 7
Pitch 0.325″
Chain speed 0 - 25.5 m/s
(0 - 1,530 m/min)
(0 - 5,020 ft/min)
Chain oil tank volume 260 cm3 (8.8  oz)
• 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).
Saw chain, guide bar, and sprocket combination
Saw chain type 91PX
Number of drive links 56 62
Guide bar Guide bar length 400 mm (16″) 450 mm (18″)
Cutting length 361 mm (14-1/4″) 418 mm (16-1/2″)
Part No. 165202-6 165390-9
Pitch 3/8″
Gauge 1.3 mm (0.050″)
Type Sprocket nose bar
Sprocket Number of teeth 6
Pitch 3/8″
Saw chain type 80TXL
Number of drive links 64 70
Guide bar Guide bar length 400 mm (16″) 450 mm (18″)
Cutting length 366 mm (14-3/8″) 416 mm (16-3/8″)
Part No. 162A03-9 162B42-5
Pitch 0.325″
Gauge 1.1 mm (0.043″)
Type Sprocket nose bar
Sprocket Number of teeth 7
Pitch 0.325″
WARNING: Use appropriate combination of the guide bar and saw chain. Otherwise personal injury may result.

3ENGLISH
Applicable battery cartridge and charger
Battery cartridge BL4040 / BL4050F* / BL4080F*
* : 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.
Recommended cord connected power source
Portable power pack PDC01
• The cord connected power source(s) listed above may not be available depending on your region of residence.
• Before using the cord connected power source, read instruction and cautionary markings on them.
SAFETY WARNINGS
General power tool safety warnings
WARNING: Read all safety warnings, instruc-
tions, illustrations and specications provided with this
power tool. Failure to follow all instructions listed below
may result in electric shock, re and/or serious injury.
Save all warnings and instruc-
tions for future reference.
The term "power tool" in the warnings refers to your
mains-operated (corded) power tool or battery-operated
(cordless) power tool.
Work area safety
1. Keep work area clean and well lit. Cluttered or
dark areas invite accidents.
2. Do not operate power tools in explosive atmo-
spheres, such as in the presence of ammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
3. Keep children and bystanders away while
operating a power tool. Distractions can cause
you to lose control.
Electrical Safety
1. Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any
adapter plugs with earthed (grounded) power
tools. Unmodied plugs and matching outlets will
reduce risk of electric shock.
2. Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of elec-
tric shock if your body is earthed or grounded.
3. Do not expose power tools to rain or wet con-
ditions. Water entering a power tool will increase
the risk of electric shock.
4. Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges
or moving parts. Damaged or entangled cords
increase the risk of electric shock.
5. When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of
a cord suitable for outdoor use reduces the risk of
electric shock.
6. If operating a power tool in a damp location is
unavoidable, use a ground fault circuit inter-
rupter (GFCI) protected supply. Use of a GFCI
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 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, clothing and gloves
away from moving parts. Loose clothes, jewel-
lery 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.

4ENGLISH
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.
It is an employer's responsibility to enforce the
use of appropriate safety protective equipment
by the tool operators and by other persons 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.
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.
4. Do not modify or attempt to repair the appli-
ance or the battery pack except as indicated in
the instructions for use and care.
General 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 rear 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 chain saw 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 chain
saw "live" and could give the operator an electric
shock.
4. Wear eye protection. Further protective equip-
ment for hearing, head, hands, legs and feet is
recommended. Adequate protective equipment
will reduce personal injury from ying debris or
accidental contact with the saw chain.

5ENGLISH
5. Do not operate a chain saw in a tree, on a lad-
der, from a rooftop, or any unstable support.
Operation of a chain saw in this manner could
result in serious personal injury.
6. Always keep proper footing and operate the
chain saw only when standing on xed, secure
and level surface. Slippery or unstable surfaces
may cause a loss of balance or control of the
chain saw.
7. 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.
8. 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.
9. 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.
10. Follow instructions for lubricating, chain
tensioning and changing the bar and chain.
Improperly tensioned or lubricated chain may
either break or increase the chance for kickback.
11. Cut wood only. Do not use chain saw for pur-
poses not intended. For example: do not use
chain saw for cutting metal, 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. Do not attempt to fell a tree until you have an
understanding of the risks and how to avoid
them. Serious injury could occur to the operator or
bystanders while felling a tree.
13. 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 chain saw misuse and/or
incorrect 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 precau-
tions are taken. Do not let go of the chain
saw.
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 guide bars and saw
chains specied by the manufacturer.
Incorrect replacement guide bars and saw
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.
14. Follow all instructions when clearing jammed
material, storing or servicing the chain saw.
Make sure the switch is o󰀨 and the battery
pack is removed. Unexpected actuation of the
chain saw while clearing jammed material or
servicing may result in serious personal injury.
Additional Safety Instructions
Operation
1. 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.
2. 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.
3. Keep handles dry, clean, and free from oil and
grease. Greasy, oily handles are slippery causing
loss of control.
4. When you use the tool on muddy ground, wet
slope, or slippery place, pay attention to your
footing.
5. Do not submerge the tool into a puddle.
6. Do not leave the tool unattended outdoors in
the rain.

6ENGLISH
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.
8. Do not replace the battery with wet hands.
9.
Do not leave the battery in the rain, nor charge,
use, or store the battery in a damp or wet place.
10. Do not wet the terminal of battery with liquid
such as water, or submerge the battery. If the
terminal gets wet or liquid enters inside of battery,
the battery may be short circuited and there is a
risk of overheat, re, or explosion.
11. After removing the battery from the machine or
charger, be sure to attach the battery cover to
the battery and store it in a dry place.
12. If the battery cartridge gets wet, drain the
water inside and then wipe it with a dry cloth.
Dry the battery cartridge completely in a dry
place before use.
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.
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.
Symbols
The followings show the symbols used for tool.
volts
direct current
meter per second
feet per minute
parts number of applicable saw chain and
guide bar
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 or tamper with the battery
cartridge. 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, overheating, 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, consult-
ing an expert for hazardous material is required.
Please also observe possibly more detailed
national regulations.
Tape or mask o󰀨 open contacts and pack up the
battery in such a manner that it cannot move
around in the packaging.
11. When disposing the battery cartridge, remove
it from the tool and dispose of it in a safe
place. Follow your local regulations relating to
disposal of battery.
12. Use the batteries only with the products
specied by Makita. Installing the batteries to
non-compliant products may result in a re, exces-
sive heat, explosion, or leak of electrolyte.
13. If the tool is not used for a long period of time,
the battery must be removed from the tool.
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.

7ENGLISH
15.
Do not touch the terminal of the tool immediately
after use as it may get hot enough to cause burns.
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 electrical power lines, do not use
the battery cartridge near a high-voltage elec-
trical power lines. It may result in a malfunction
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 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. 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
12
3
45
6
11
13
15
12
9
14
16
7
8
10
Fig.2
1Battery cartridge 2Front hand guard 3Lever
4Guide bar 5Saw chain 6Adjusting dial
7Main power lamp 8Main power switch 9Lock-o󰀨 lever
10 Rear handle 11 Switch trigger 12 Front handle
13 Oil tank cap 14 Guide bar cover 15 Adjusting screw (for oil pump)
16 Chain catcher ----

8ENGLISH
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.

9ENGLISH
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
holding 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.
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.
Tool speed is increased by increasing pressure on the
switch trigger. Release the switch trigger to stop.
1
2
Fig.6
► 1. Switch trigger 2. Lock-o󰀨 lever

10 ENGLISH
Checking the chain brake
CAUTION: Hold the chain saw with both
hands when switching it on. Hold the rear 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-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.
23
1
23
1
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 one second 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
one second.
Adjusting the chain lubrication
You can adjust the oil pump feed rate with the adjusting
screw. The amount of oil can be adjusted using the
universal wrench.
1
Fig.8
► 1. Adjusting screw
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. Pull the lever up while pressing its edge.
1
Fig.9
► 1. Lever

11 ENGLISH
3. Turn the lever counterclockwise until the sprocket
cover comes o󰀨.
1 2
Fig.10
► 1. Lever 2. Sprocket cover
4. Remove the sprocket cover.
5. 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
6. Fit one end of the saw chain on the top of the
guide bar.
7. Fit the other end of the saw chain around the
sprocket, then attach the guide bar to the chain saw
body.
1
Fig.12
► 1. Sprocket
8. Turn the adjusting dial to "-" direction to slide the
adjusting pin in the direction of arrow.
2
1
Fig.13
► 1. Adjusting dial 2. Adjusting pin
9. Place the sprocket cover on the chain saw so that
the adjusting pin is positioned in a small hole on the
guide bar.
2
1
3
Fig.14
► 1. Sprocket cover 2. Guide bar 3. Hole
10. Turn the lever clockwise fully and turn back the
lever a little to keep looseness for adjusting the chain
tension.
11. Adjust the chain tension. Refer to the section for
adjusting saw chain tension for procedure.

12 ENGLISH
12. Turn the lever clockwise until the sprocket cover is
secured then return it to the original position.
1
2
Fig.15
► 1. Lever 2. Sprocket cover
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. Turn the adjusting dial to "-" direction to release
the saw chain tension.
1
Fig.16
► 1. Adjusting dial
3. Pull the lever up while pressing its edge.
1
Fig.17
► 1. Lever
4. Turn the lever counterclockwise until the sprocket
cover comes o󰀨.
1 2
Fig.18
► 1. Lever 2. Sprocket cover
5. Remove the sprocket cover then remove the saw
chain and guide bar from the chain saw body.
Adjusting saw chain tension
CAUTION: Carry out the procedure of install-
ing or removing saw chain in a clean place free
from sawdust and the like.
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 o󰀨 the bar and it may cause an injury
accident.

13 ENGLISH
The saw chain may become loose after many hours of use.
From time to time check the saw chain tension before use.
1. Pull the lever up while pressing its edge.
1
Fig.19
► 1. Lever
2. Turn the lever counterclockwise a little to loosen
the sprocket cover lightly.
1 2
Fig.20
► 1. Lever 2. Sprocket cover
3. Lift up the guide bar tip slightly and adjust the
chain tension. Turn the adjusting dial to the "-" direction
to loosen, turn to the "+" direction to tighten. Tighten the
saw chain until the lower side of the saw chain ts in the
guide bar rail as illustrated.
2
3
1
Fig.21
► 1. Adjusting dial 2. Guide bar 3. Saw chain
4. Keep holding the guide bar lightly and tighten the
sprocket cover. Make sure that the saw chain does not
loose at the lower side.
5. Return the lever to the original position.
Make sure the saw chain ts snugly against the lower
side of the bar.
OPERATION
Lubrication
CAUTION: Do not operate the chain saw when
the tank is empty. Replenish the oil in due time
before the tank is empty.
CAUTION: Prevent the oil from coming into
contact with the skin and eyes. Contact with the
eyes causes irritation. In the event of eye contact,
ush the a󰀨ected eye immediately with clear
water, then consult a doctor at once.
CAUTION: Never use waste oil. Waste oil con-
tains carcinogenic substances. The contaminants
in waste oil cause accelerated wear of the oil
pump, the bar and the chain. Waste oil is harmful
to the environment.
NOTICE: When the chain saw is used for the rst
time, it may take up to two minutes for the saw chain
oil to begin its lubricating e󰀨ect upon the saw mech-
anism. Run the saw without load until it does so.
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.
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.22
► 1. Oil tank cap 2. Oil inspection window
To ll the oil, perform the following steps:
1. Clean the area around the oil tank cap thoroughly
to prevent any dirt from entering the oil tank.
2. Lay the chain saw on its side.

14 ENGLISH
3. 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.
1
23
Fig.23
► 1. Oil tank cap 2. Tighten 3. Loosen
4. Fill the oil tank with the oil. The proper amount of
oil is 260 ml (8.8  oz).
5. Screw the oil tank cap rmly back in place.
6. Wipe away any spilt chain oil carefully.
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.24
► 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.25
Working with the chain saw
CAUTION: The rst time user should, as a
minimum 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.
CAUTION: When you use the upper side of
the guide bar for cutting, be careful since the
chain saw may be pushed in your direction if the
saw chain is trapped.
NOTICE: Never toss or drop the tool.
NOTICE: Do not cover the vents of the tool.
NOTICE: When making several cuts, switch the
chain saw o󰀨 between cuts.
Felling a tree
CAUTION: Felling work may only be per-
formed by trained persons. The work is hazardous.
When cross-cutting/bucking and felling operations are
being performed by two or more persons at the same
time, the felling operations should be separated from
the crosscutting/bucking operation by a distance of at
least twice the height of the tree being felled. Trees
should not be felled in a manner that would endanger
any person, strike any utility line or cause any property
damage. If the tree does make contact with any utility
line, the company should be notied immediately.
The chain saw operator should keep on the uphill side
of the terrain as the tree is likely to roll or slide downhill
after it is felled.

15 ENGLISH
An escape path should be planned and cleared as nec-
essary before cuts are started. The escape path should
extend back and diagonally to the rear of the expected
line of fall as illustrated.
1
2
2
33
Fig.26
► 1. Felling direction 2. Danger zone 3. Escape route
Before felling is started, consider the natural lean of the
tree, the location of larger branches and the wind direc-
tion to judge which way the tree will fall.
Remove dirt, stones, loose bark, nails, staples and wire
from the tree.
Notching undercut and felling back cut
CAUTION: Do not cut the hinge under any
circumstances. The tree may fall unexpectedly.
NOTICE: Use plastic or aluminum wedges to
keep the back cut open. Do not use iron wedges.
1
1
2
3
4
5
Fig.27
► 1. 50 mm (2″) 2. Felling back cut 3. Hinge 4. Notch
5. Direction of fall
Make the notch 1/3 the diameter of the tree, perpen-
dicular to the direction of falls as illustrated. Make the
lower horizontal notching cut rst. This will help to avoid
pinching either the saw chain or the guide bar when the
second notch is being made.
Make the felling back cut at least 50 mm (2″) higher
than the horizontal notching cut as illustrated. Keep the
felling back cut parallel to the horizontal notching cut.
Make the felling back cut so enough wood is left to act
as a hinge. The hinge wood keeps the tree from twisting
and falling in the wrong direction. Do not cut through
the hinge.
As the felling gets close to the hinge, the tree should
begin to fall. If there is any chance that the tree may
not fall in desired direction or it may rock back and bind
the saw chain, stop cutting before the felling back cut is
complete and use wedges of wood, plastic or aluminium
to open the cut and drop the tree along the desired line
of fall.
When the tree begins to fall, remove the chain saw
from the cut, stop the motor, put the chain saw down,
then use the retreat path planned. Be alert for overhead
limbs falling and watch your footing.
Limbing a tree
CAUTION: Limbing may only be performed by
trained persons. A hazard is presented by the risk
of kickback.
Limbing is removing the branches from a fallen tree.
When limbing leave larger lower limbs to support the
log o󰀨 the ground. Remove the small limbs in one cut as
illustrated. Branches under tension should be cut from
the bottom up to avoid binding the chain saw.
1
Fig.28
► 1. Limb cut
Cross-cutting/bucking a log
Cross-cutting/bucking is cutting a log into lengths. It
is important to make sure your footing is rm and your
weight is evenly distributed on both feet. When possi-
ble, the log should be raised and supported by the use
of limbs, logs or chocks. Follow the simple directions for
easy cutting.
When the log is supported along its entire length as
illustrated, it is cut from the top (overbuck).
Fig.29

16 ENGLISH
When the log is supported on one end, as illustrated,
cut 1/3 the diameter from the underside (underbuck).
Then make the nished cut by overbucking to meet the
rst cut.
1
2
Fig.30
► 1. Second cut 2. First cut
When the log is supported on both ends, as illustrated,
cut 1/3 the diameter from the top (overbuck). Then
make the nished cut by underbucking the lower 2/3 to
meet the rst cut.
1
2
Fig.31
► 1. First cut 2. Second cut
When cross-cutting/bucking on a slope always stand on
the uphill side of the log, as illustrated. When “cutting
through”, to maintain complete control, release the
cutting pressure near the end of the cut without relaxing
your grip on the chain saw handles. Don’t let the chain
contact the ground. After completing the cut, wait for
the saw chain to stop before you move the chain saw.
Always stop the motor before moving from tree to tree.
Fig.32
Parallel-to-grain cut
CAUTION: Parallel-to-grain cut may only be
performed by trained persons. The possibility of
kickback presents a risk of injury.
Perform the parallel-to-grain cut at as shallow an angle
as possible.
Fig.33
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.34
► 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 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
Fig.35
► 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 91PX : 0.65 mm (0.025″)
Chain blade 80TXL : 0.65 mm (0.025″)
30
30
55 55
Fig.36
— 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 91PX : 55°
Chain blade 80TXL : 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 91PX : 4.0 mm (5/32″)
Chain blade 80TXL : 4.0 mm (5/32″)
— 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.37
► 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.38
► 1. File holder

18 ENGLISH
— After sharpening the chain, check the height of the
depth gauge using the chain gauge tool (optional
accessory).
Fig.39
— 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.40
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.41
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.
12
Fig.42
► 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.43
► 1. Sprocket 2. Areas to be worn out

19 ENGLISH
Always t a new locking ring when replacing the
sprocket.
12
Fig.44
► 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 recharging
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 recharging
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.
OPTIONAL ACCESSORIES
CAUTION: These accessories or attachments
are recommended for use with your Makita tool
specied in this manual. The use of any other
accessories or attachments might present a risk of
injury to persons. Only use accessory or attachment
for its stated purpose.
If you need any assistance for more details regard-
ing these accessories, ask your local Makita Service
Center.
• Saw chain
• Guide bar
• Guide bar cover
• File
• Tool bag
• Makita genuine battery and charger
WARNING: If you purchase a guide bar of
di󰀨erent length from the standard guide bar, also
purchase 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
di󰀨er from country to country.
MAKITA LIMITED WARRANTY
Please refer to the annexed warranty sheet for the
most current warranty terms applicable to this product.
If annexed warranty sheet is not available, refer to the
warranty details set forth at below website for your
respective country.
United States of America: www.makitatools.com
Canada: www.makita.ca
Other countries: www.makita.com