Makita BUC121 User manual

1
GB Cordless Chain Saw INSTRUCTION MANUAL
SBatteridriven kedjesåg BRUKSANVISNING
NBatteridrevet kjedesag BRUKSANVISNING
FIN Langaton ketjusaha KÄYTTÖOHJE
LV Bezvada motorzāģis LIETOŠANAS INSTRUKCIJA
LT Belaidis grandininis pjūklas NAUDOJIMO INSTRUKCIJA
EE Juhtmeta kettsaag KASUTUSJUHEND
RUS Цепная пила спитанием от
аккумуляторной батареи
РУКОВОДСТВО ПО ЭКСПЛУАТАЦИИ
BUC121
BUC122

2
1
23
1 012143
1
2 012128
12
3 008572
12
4 008566
1
2
3
5 008568
2
1
6 013715
12
7 013716
2
3
1
8 008569 9 008570

3
2
1
3
13 008571
1
14 008574
1
15 008575
1
2
16 008576 17 001742 18 008634
1
2
19 008573 20 008633 21 006927
12
10 008587 11 008570 12 014818

4
22 006929 23 008578
12
24 008579
1
25 008580 26 008581
1
27 008582
1
28 008635
1
2
29 008584
1
2
3
30 008586
1
31 001145
12
32 008585

5
ENGLISH (Original instructions)
Explanation of general view
1-1. Red indicator
1-2. Button
1-3. Battery cartridge
2-1. Star marking
3-1. Lock-off button
3-2. Switch trigger
4-1. Sprocket cover
4-2. Knob
5-1. Cutter
5-2. Guide bar
5-3. Arrow
6-1. Spring
6-2. Sprocket
7-1. Spring
7-2. Guide bar
8-1. Sprocket cover
8-2. Hook
8-3. Hole
13-1. Oil tank cap
13-2. Oil inspection window
13-3. Oil tank opening
14-1. Tip guide
15-1. Lower guide
19-1. Battery cartridge
19-2. Scabbard (chain cover)
24-1. Push nut
24-2. Slotted bit screwdriver
25-1. Filter
27-1. Filter
28-1. Push nut
29-1. Sprocket
29-2. Locking ring
30-1. Locking ring
30-2. Sprocket
30-3. Washer
31-1. Limit mark
32-1. Brush holder cap
32-2. Screwdriver
SPECIFICATIONS
Model BUC121 BUC122
Guidebar length 115 mm
Cutting length 11.5 cm
Standard guide bar
Type Carving bar
Type 25 AP
Pitch 6.35 mm (1/4")
Gauge 1.3 mm (0.05")
Standard saw chain
No. of drive links 42
Number of teeth 9
Sprocket Pitch 6.35 mm (1/4")
Overall length 422 mm
Net weight 2.5 kg 2.6 kg
Chain speed per minute (min-1) 4.8 m/s (290 m/min) 5.0 m/s (300 m/min)
Chain oil tank volume 80 cm3
Rated voltage D.C. 14.4 V D.C. 18 V
• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Specifications and battery cartridge may differ from country to country.
• Weight, with battery cartridge, according to EPTA-Procedure 01/2003
WARNING: Use appropriate combination of the guide bar and saw chain. Otherwise personal injury may result.
END313-1
Symbols
The following show the symbols used for the equipment.
Be sure that you understand their meaning before use.
･Read instruction manual.
･Wear eye protection.
･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 rain.
･Maximum permissible cut length
･Direction of chain travel
･Saw chain oil adjustment
･Only for EU countries
Do not dispose of electric equipment or
battery pack together with household
waste material!
In observance of the European Directives,
on Waste Electric and Electronic
Equipment and Batteries and
Accumulators and Waste Batteries and
Accumulators and their implementation in
accordance with national laws, electric
Cd
Ni-MH
Li-ion

6
equipment and batteries and battery
pack(s) that have reached the end of their
life must be collected separately and
returned to an environmentally compatible
recycling facility.
ENE090-1
Intended use
The tool is intended for cutting branches / pruning trees.
It is also suitable for tree service.
ENG905-1
Noise
The typical A-weighted noise level determined
according to EN60745:
Model BUC121
Sound pressure level (LpA) : 84 dB (A)
Sound power level (LWA) : 92 dB (A)
Uncertainty (K) : 2 dB (A)
Model BUC122
Sound pressure level (LpA) : 84.6 dB (A)
Sound power level (LWA) : 92.7 dB (A)
Uncertainty (K) : 2 dB (A)
Wear ear protection
ENG900-1
Vibration
The vibration total value (tri-axial vector sum)
determined according to EN60745:
Model BUC121
Work mode : cutting wood
Vibration emission (ah) : 4.2 m/s2
Uncertainty (K) : 1.5 m/s2
Model BUC122
Work mode : cutting wood
Vibration emission (ah) : 4.3 m/s2
Uncertainty (K) : 1.5 m/s2
ENG901-1
• The declared vibration emission value has been
measured in accordance with the standard test method
and may be used for comparing one tool with another.
• The declared vibration emission value may also be
used in a preliminary assessment of exposure.
WARNING:
• The vibration emission during actual use of the power
tool can differ from the declared emission value
depending on the ways in which the tool is used.
• Be sure to identify safety measures to protect the
operator that are based on an estimation of
exposure in the actual conditions of use (taking
account of all parts of the operating cycle such as
the times when the tool is switched off and when it
is running idle in addition to the trigger time).
ENH030-4
For European countries only
EC Declaration of Conformity
We Makita Corporation as the responsible
manufacturer declare that the following Makita
machine(s):
Designation of Machine:
Cordless Chain Saw
Model No./ Type: BUC122
Specifications: see "SPECIFICATIONS" table.
are of series production and
Conforms to the following European Directives:
2000/14/EC, 2006/42/EC
And are manufactured in accordance with the following
standards or standardised documents:
EN ISO 11681-2
The EC-Type Examination Certificate
No.4811004.13002
The EC-Type Examination per 2006/42/EC was
performed by:
DEKRA Testing and Certification GmbH
Enderstraße 92b
01277 Dresden
Germany
Identification No. 2140
The technical documentation is kept by:
Makita International Europe Ltd.
Technical Department,
Michigan Drive, Tongwell,
Milton Keynes, Bucks MK15 8JD, England
The conformity assessment procedure required by
Directive 2000/14/EC was in Accordance with annex V.
Measured Sound Power Level: 93.0 dB (A)
Guaranteed Sound Power Level: 95.0 dB (A)
5.11.2013
000230
Tomoyasu Kato
Director
Makita Corporation
3-11-8, Sumiyoshi-cho,
Anjo, Aichi, 446-8502, JAPAN
GEA010-1
General Power Tool Safety
Warnings
WARNING Read all safety warnings and all
instructions. Failure to follow the warnings and
instructions may result in electric shock, fire and/or
serious injury.
Save all warnings and instructions for
future reference.

7
GEB119-1
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. When holding with both hands, 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
configuration 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
contact hidden wiring. Saw chains contacting a
"live" wire may make exposed metal parts of the
power tool "live" and could give the operator an
electric shock.
4. Wear safety glasses and hearing protection.
Further protective equipment for head, hands,
legs and feet is recommended. Adequate
protective clothing will reduce personal injury by
flying debris or accidental contact with the saw
chain.
5. Always keep proper footing. Slippery or
unstable surfaces may cause a loss of balance or
control of the chain saw.
6. When cutting a limb that is under tension be
alert for spring back. When the tension in the
wood fibers 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
off balance.
8. Carry the chain saw by the front handle with
the chain saw switched off and away from
your body. When transporting or storing the
chain saw always fit 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
tensioning 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
purposes not intended. For example: do not
use chain saw for cutting plastic, masonry or
non-wood building materials. Use of the chain
saw for operations different than intended could
result in a hazardous situation.
12. Causes and Operator Prevention of Kickback:
Kickback may occur when the nose or tip of the
guide bar touches an object, or when the wood
closes in and pinches the saw chain in the cut.
Tip contact in some cases may cause a sudden
reverse reaction, kicking the guide bar up and
back towards the operator.
Pinching the saw chain along the top of the guide
bar may push the guide bar rapidly back towards
the operator.
Either of these reactions may cause you to lose
control of the saw which could result in serious
personal injury. Do not rely exclusively upon the
safety devices built into your saw. As a chain saw
user, you should take several steps to keep your
cutting jobs free from accident or injury.
Kickback is the result of tool misuse and/or
incorrect operating procedures or conditions and
can be avoided by taking proper precautions as
given below:
−Maintain a firm grip, with thumbs and
fingers 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.
014673
−Do not overreach and do not cut above
shoulder height. This helps prevent
unintended tip contact and enables better
control of the chain saw in unexpected
situations.
−Only use replacement bars and chains
specified by the manufacturer. Incorrect
replacement 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:

8
• The run-down brake is working properly;
• The bar and the sprocket cover are fitted
correctly;
• The chain has been sharpened and tensioned
in accordance with the regulations;
14. Do not start the chain saw with the chain
cover being installed on it. Starting the chain
saw with the chain cover being installed on it may
cause the chain cover to thrown out forward
resulting in personal injury and damage to objects
around the operator.
Top handle chainsaw specific 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 recommendations
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. Do not fill the chain oil near fire. Never smoke
when you fill the chain oil.
5. National regulation may restrict the use of the
chain saw.
6. If the equipment gets heavy impact or fall, check
the condition before continuing work. Check the
controls and safety devices for malfunction. If
there is any damage or doubt, ask our authorized
service center for the inspection and repair.
7. Hold the saw firmly in place to avoid skating (skid
movement) or bouncing of the saw when starting
a cut.
8. At the end of the cut, be careful to keep your
balance due to the “drop”.
9. Take into account the direction and speed of the
wind. Avoid sawdust and chain oil mist.
Protective equipment
1. In order to avoid head, eye, hand or foot
injuries as well as to protect your hearing the
following protective equipment must be used
during operation of the chain saw:
−The kind of clothing should be appropriate, i.
e. it should be tight-fitting 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
regular 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
equipment (ear muffs, ear plugs, etc.).
−The protective jacket consists of 22 layers
of nylon and protects the operator against
cuts. It is always to be worn when working
from elevated platforms (cherry pickers, lifts),
from platforms mounted on ladders or when
climbing with ropes.
−The protective brace and bib overall is
made of a nylon fabric with 22 layers and
protects against cuts. We strongly
recommend its use.
−Protective gloves made of thick leather are
part of the prescribed equipment and must
always be worn during operation of the chain
saw.
−During operation of the chain saw safety
shoes or safety boots fitted 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 fingers, hands or wrists: “Falling
asleep” (numbness), tingling, pain, stabbing
sensation, alteration of skin colour or of the skin.
If any of these symptoms occur, see a
physician!
To reduce the risk of “white finger disease”, keep
your hands warm during operation and well
maintain the equipment and accessories.
SAVE THESE INSTRUCTIONS.

9
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.
ENC007-8
IMPORTANT SAFETY
INSTRUCTIONS
FOR BATTERY CARTRIDGE
1. Before using battery cartridge, read all
instructions and cautionary markings on (1)
battery charger, (2) battery, and (3) product
using battery.
2. Do not disassemble battery cartridge.
3. If operating time has become excessively
shorter, stop operating immediately. It may
result in a risk of overheating, possible burns
and even an explosion.
4. If electrolyte gets into your eyes, rinse them
out with clear water and seek medical
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
conductive material.
(2) Avoid storing battery cartridge in a
container 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 flow,
overheating, possible burns and even a
breakdown.
6. Do not store the tool and battery cartridge in
locations where the temperature may reach or
exceed 50 ﾟC (122 ﾟ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 fire.
8. Be careful not to drop or strike battery.
9. Do not use a damaged battery.
10. Follow your local regulations relating to
disposal of battery.
SAVE THESE INSTRUCTIONS.
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
temperature at 10 ﾟC - 40 ﾟC (50 ﾟF - 104 ﾟF).
Let a hot battery cartridge cool down before
charging it.
4. Charge the battery cartridge once in every six
months if you do not use it for a long period
of time.

10
Parts supplied
1
2
3
4
56
7
8
9
10
11
12
13
008588
1
2
3
4
5
6
7
8
9
10
11
12
Top handle
Battery cartridge
Sprocket cover
Front hand guard
Guide bar
Tip guard
Saw chain
knob
Lock off button
Switch trigger
Front handle
Chain cover
13
Carabiner or rope
attachment point
008589

11
FUNCTIONAL DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before adjusting or
checking function on the tool.
Installing or removing battery cartridge
Fig.1
CAUTION:
• Always switch off the tool before installing or
removing of the battery cartridge.
• Hold the tool and the battery cartridge firmly when
installing or removing battery cartridge.
Failure to
hold the tool and the battery cartridge firmly may cause
them to slip off your hands and result in damage to the
tool and battery cartridge and a personal injury.
To remove the battery cartridge, slide it from the tool
while sliding the button on the front of the cartridge.
To install the battery cartridge, align the tongue on the
battery cartridge with the groove in the housing and slip
it into place. Insert it all the way until it locks in place
with a little click. If you can see the red indicator on the
upper side of the button, it is not locked completely.
CAUTION:
• Always install the battery cartridge fully until the
red indicator cannot be seen. If not, it may
accidentally fall out of the tool, causing injury to
you or someone around you.
• Do not install the battery cartridge forcibly. If the
cartridge does not slide in easily, it is not being
inserted correctly.
Battery protection system (Lithium-ion
battery with star marking)
Fig.2
Lithium-ion batteries with a star marking are equipped
with a protection system. This system automatically cuts
off power to the tool to extend battery life.
The tool will automatically stop during operation if the
tool and/or battery are placed under one of the following
conditions:
• Overloaded:
The tool is operated in a manner that causes
it to draw an abnormally high current.
In this situation, release the trigger switch on
the tool and stop the application that caused
the tool to become overloaded. Then pull the
trigger switch again to restart.
If the tool does not start, the battery is
overheated. In this situation, let the battery
cool before pulling the trigger switch again.
• Low battery voltage:
The remaining battery capacity is too low
and the tool will not operate. In this situation,
remove and recharge the battery.
Switch action
CAUTION:
• Before inserting the battery cartridge into the tool,
always check to see that the switch trigger
actuates properly and returns to the "OFF"
position when released.
Fig.3
To prevent the switch trigger from being accidentally
pulled, a lock-off button is provided.
To start the tool, depress the lock-off button and pull the
switch trigger. Release the switch trigger to stop.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before carrying out
any work on the tool.
Installing or removing saw chain
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before installing or
removing the saw chain.
• Always wear gloves when installing or removing
the saw chain.
• Use only saw chain and guide bar with bar tip
designed for this chain saw (see the Extract from
the spare parts list).
• In order to prevent kickback, do not remove the
bar tip or replace the guide bar with one without a
bar tip.
Fig.4
Loosen the screw by turning counterclockwise the knob
until the sprocket cover comes off.
Remove the sprocket cover.
Remove saw chain and guide bar from the tool.
Fig.5
Fit in one end of the saw chain on the top of guide bar.
At this time, fit the saw chain as shown in the figure
because it rotates in the direction of arrow.
Fig.6
Place the saw chain so that the spring is positioned
inside it and fit in the other end of saw chain around the
sprocket as shown in the figure.
Fig.7
While turning the guide bar counterclockwise, install it
so that the end of guide bar contacts the spring.
Fig.8
Insert the hook of sprocket cover into the hole in the tool
and then place the sprocket cover on the tool.
Fig.9
Turn the knob clockwise to tighten the screw firmly.

12
Adjusting saw chain tension
Fig.10
Just a slight loosening of the screw allows the saw
chain tension to be adjusted. After adjusting, retighten
the screw firmly.
Fig.11
CAUTION:
• For a while after a new saw chain is installed, it
tends to become loosened. From time to time
check the saw chain tension before use.
• Low tension of saw chain may cause coming out
of place.
• Installing or removing saw chain should be carried
out in a clean place free from sawdust and the like.
Spike bumper (optional accessory)
Fig.12
To install spike bumper, perform the following steps:
1. Remove the sprocket cover, saw chain and guide
bar as described in this instruction manual.
2. Fit the holes of spike bumper along with the holes
on the chainsaw.
3. Tighten them firmly with screws.
OPERATION
Lubrication
Fig.13
Saw chain is automatically lubricated when the tool is in
operation.
Check the amount of remaining oil in the oil tank
through the oil inspection window.
To refill the tank, remove the cap from the oil tank opening.
After refilling the tank, always screw the provided oil
tank cap on the chain saw.
CAUTION:
• When filling the chain saw with chain oil for the first
time, or refilling the tank after it has been completely
emptied, add oil up to the bottom edge of the filler
neck. The oil delivery may otherwise be impaired.
• As a saw chain oil, use oil exclusively for Makita
chain saws or oil available in market.
• Never use oil including dust and particles or
volatile oil.
• When pruning trees, use botanical oil. Mineral oil
may harm trees.
• Never force the chain saw when pruning trees.
• Before cutting out, make sure that the provided oil
tank cap is screwed in place.
Hold the chain saw away from the tree. Start it and wait until
lubrication on saw chain is adequate.
Bring the tip guide/lower guide into contact with the branch
to be cut before switching on. Cutting without bringing the tip
guide/lower guide into contact with the branch may cause
the guide bar to wobble, resulting in injury to operator.
Saw the wood to be cut by just moving it down.
Pruning trees
Fig.14
Fig.15
CAUTION:
• Keep all parts of the body away from the saw
chain when the motor is operating.
• Hold the chain saw firmly with both hands when
the motor is running.
• Do not overreach. Keep proper footing and
balance at all times.
Bring the tip guide/lower guide into contact with the
branch to be cut before switching on. Cutting without
bringing the tip guide/lower guide into contact with the
branch may cause the guide bar to wobble, resulting in
injury to operator.
When cutting thick branches, first make a shallow
undercut and then make the finish cut from the top.
Fig.16
If you try to cut off thick branches from the bottom, the
branch may close in and pinch the saw chain in the cut.
If you try to cut off thick branches from the top without a
shallow undercut, the branch may splinter.
Fig.17
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; then apply the
spike a little lower and finish the cut by raising the
handle.
Fig.18
Carrying tool
Fig.19
Always remove the battery cartridge from the tool and
overlap the guide bar with the scabbard before carrying
the tool. Also cover the battery cartridge with the battery
cover.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before attempting to
perform inspection or maintenance.
• Always wear gloves when performing any
inspection or maintenance.
• Never use gasoline, benzine, thinner, alcohol or
the like. Discoloration, deformation or cracks may
result.

13
Sharpening the saw chain
CAUTION:
• Always remove the battery cartridge and wear
safety gloves when performing work on the saw
chain.
Fig.20
Sharpen the saw chain when:
−Mealy sawdust is produced when damp wood is
cut;
−The chain penetrates the wood with difficulty, even
when heavy pressure is applied;
−The cutting edge is obviously damaged;
−The saw pulls to the left or right in the wood. The
reason for this behaviour is uneven sharpening of
the saw chain, or damage to one side only.
Sharpen the saw chain frequently, but remove only
a little material each time.
Two or three strokes with a file are usually sufficient for
routine resharpening. When the saw chain has been
resharpened several times, have it sharpened in a
MAKITA specialist repair shop.
File and file guiding
−Use a special round file (optional accessory) for
saw chains, with a diameter of 4 mm, to sharpen
the chain. Normal round files are not suitable.
Fig.21
−The file should only engage the material on the
forward stroke. Lift the file off the material on the
return stroke.
−Sharpen the shortest cutter first. The length of this
cutter is then the gauge dimension for all other
cutters on the saw chain.
−Guide the file as shown in the figure.
−The file can be guided more easily if a file holder
(accessory) is employed. The file 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 file
diameter).
Guide the file as shown in the figure.
−After sharpening the chain, check the height of the
depth gauge using the chain gauge tool (optional
accessory).
Fig.22
−Remove any projecting material, however small,
with a special flat file (optional accessory).
−Round off the front of the depth gauge again.
−Wash away dust and particles from saw chain
after adjusting the height of depth gauge.
Cleaning guide bar
Fig.23
Chips and sawdust will build up in the guide bar groove,
clogging it and impairing oil flow. Always clean out the
chips and sawdust when sharpening or replacing the
saw chain.
Cleaning the oil filter at the oil discharge hole
Small dust or particles may be built up in the oil filter at
the oil discharge hole during operation.
Small dust or particles built up in the oil filter may impair
the oil discharge flow and cause an insufficient
lubrication on the whole saw chain.
When a poor chain oil delivery occurs at the top of
guide bar, clean the filter as follows.
Remove the battery cartridge from the tool.
Remove the sprocket cover and saw chain from the tool.
(Refer to the section titled " Installing or removing saw
chain ".)
Fig.24
Remove the push nut using a slotted bit screwdriver
with a slender shaft or the like.
Fig.25
Take the filter out of the chain saw and remove small
dust or particles from it. When the filter is too dirty,
replace it with a new one.
Insert the battery cartridge into the tool.
Fig.26
Pull the switch trigger to flow built-up dust or particles
off the oil discharge hole by discharging chain oil.
Remove the battery cartridge from the tool.
Fig.27
Insert the cleaned oil filter into the oil discharge hole.
When the filter is too dirty, replace it with a new one.
Fig.28
Insert the push nut with its correct side facing up as
shown in the figure into the oil discharge hole to secure
the filter. When the filter cannot be secured with a
disfigured push nut, replace the push nut with a new
one.
Reinstall the sprocket cover and saw chain on the tool.
Replacing the sprocket
Before fitting a new saw chain, check the condition of
the sprocket.
Fig.29
CAUTION:
• A worn sprocket will damage a new saw chain.
Have the sprocket replaced in this case. The
sprocket need to be installed so that it always
faces as shown in the figure.
Fig.30
Always fit a new locking ring when replacing the
sprocket.

14
Replacing carbon brushes
Fig.31
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Use a screwdriver to remove the brush holder caps.
Take out the worn carbon brushes, insert the new ones
and secure the brush holder caps.
Fig.32
Storing tool
Clean the tool before storing. Remove any chips and
sawdust from the tool after removing the sprocket cover.
After cleaning the tool, run it under no load to lubricate
the saw chain and guide bar.
Cover the guide bar with the scabbard.
Remove oil from the oil tank to empty it and place the
chain saw with the tank cap facing upward.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be
performed by Makita Authorized Service Centers,
always using Makita replacement parts.
Instructions for periodic maintenance
To ensure long life, prevent damage and ensure the full
functioning of the safety features the following
maintenance must be performed regularly.
Warranty claims can be recognized only if this work is
performed regularly and properly. Failure to perform the
prescribed maintenance work can lead to accidents!
The user of the chain saw must not perform
maintenance work which is not described in the
instruction manual. All such work must be carried out by
authorized service centre.
Remove from the chain
saw.
Guide bar
Chainlubrication
Switch trigger
Lock-off button
Oil tank cap
Chaincatcher
Screws and nuts
Chainsaw
Saw chain
Before
storage
Annually
Every 3
month
Every
week
Everyday
Before
operation
Item
Operating
time
Inspection.
Cleaning.
Check at authorized service
center.
Inspection.
Inspection.
Inspection.
Inspection.
Inspection.
Inspection.
Sharpening ifnecessary.
Check the oil feed rate.
Check tightness.
014813

15
TROUBLE SHOOTING
Before asking for repairs, conduct your own inspection
first. If you find a problem that is not explained in the
manual, do not attempt to dismantle the tool. Instead,
ask Makita Authorized Service Centers, always using
Makita replacement parts for repairs.
Adjustthe guide bar and saw chain
tension.
Askyour local authorized service
center for repair.
Malfunction status Cause Action
Chainsaw does not start.
Motor stops running after alittleuse.
Nooil on the chain.
Itdoes not reach maximum RPM.
Chaindoes not stop:
Stop the machine immediately!
Abnormal vibration:
Stop the machine immediately!
Battery problem (under voltage).
Battery's charge level is low.
Oil tank is empty.
Oil guide groove is dirty.
Malfunction of oil pump.
Battery cartridge is installed improperly.
The drive system does not work
correctly.
Malfunction of switch.
Looseguide bar or saw chain.
Tool malfunction.
Recharge the battery cartridge. If
recharging is not effective, replace
battery cartridge.
Recharge the battery cartridge. If
recharging is not effective, replace
battery cartridge.
Fill the oil tank.
Clean the groove.
Install the battery cartridge as
described inthis manual.
Recharge the battery cartridge. If
recharging is not effective, replace
battery cartridge.
Askyour local authorized service
center for repair.
Askyour local authorized service
center for repair.
Askyour local authorized service
center for repair.
Battery cartridge is not installed.
Battery's charge level is low.
Install the charged battery cartridge.
014814
OPTIONAL ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments
might present a risk of injury to persons. Only use
accessory or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Various type of Makita genuine batteries and
chargers
• Saw chain
• Scabbard
• Guide bar complete
• File
NOTE:
• Some items in the list may be included in the tool
package as standard accessories. They may differ
from country to country.