Makita EA3700T User guide

Petrol Chain Saw ORIGINAL INSTRUCTION MANUAL
Important:
Read this instruction manual carefully before putting the chain saw into operation and strictly observe the
safety regulations!
Keep this instruction manual!
EA3700T

2
English (Original instructions)
Table of Contents Page
Symbols ............................................................................................2
Safety precautions ............................................................................3
Technical data...................................................................................8
Designation of parts..........................................................................9
Chain saw’s safety function ............................................................10
Assembly ........................................................................................ 11
Before use ......................................................................................13
Starting and stopping engine ..........................................................15
Maintenance ...................................................................................17
Maintenance interval ......................................................................25
Troubleshooting ..............................................................................26
SYMBOLS
Read instruction manual and follow the
warning- and safety precautions!
Caution, kickback!
Particular care and caution!
Warning: This saw is to be used by properly
trained operators only. Chain brake
Forbidden! Hold the saw with both hands while working!
One-handed use is extremely hazardous!
Wear protective helmet, eye and ear
protection! Fuel and oil mixture
Wear protective gloves! Chain oil fill/oil pump
Use appropriate protection for foot-leg and
hand-arm. Saw chain oil adjustment screw
No smoking! Primer pump
No open fire! Chain direction
Stop engine! First aid
Start engine Normal / winter operation
Combination switch, Choke ON/STOP

3
WARNING:
This chain saw is designed especially for tree care and surgery. All work with
this chain saw is to be carried out by properly trained persons only. Observe
all literature, procedures and recommendations from the relevant professional
organisation. Failure to do so constitutes a high accident risk! We recommend
always using a rising platform (cherry picker, lift) for sawing in trees. Rappelling
techniques are extremely dangerous and require special training! The operator
must be trained in and familiar with the use of safety equipment and working 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!
General precautions
• To ensure correct operation the user has to read this instruction manual to
make himself familiar with the characteristics of the chain saw. Users insufficiently
informed will endanger themselves as well as others due to improper handling.
• Lend this chain saw only to persons with training and experience in the use of tree-
surgery saws. Always hand over the instruction manual.
• Children and young persons aged under 18 years must not be allowed to operate
the chain saw. Persons over the age of 16 years may, however, use the chain saw
for the purpose of being trained as long as they are under the supervision of a
qualified trainer.
• Use chain saws always with the utmost care and attention.
• Operate the chain saw only if you are in good physical condition. If you are tired,
your attention will be reduced. Be especially careful at the end of a working day.
Perform all work calmly and carefully. The user has to accept liability for others.
• Never work under the inuence of alcohol, drugs or medication.
• A fire extinguisher must be available in the immediate vicinity when working in easily
inammable vegetation or when it has not rained for a long time (danger of fire).
• National regulation can restrict the use of the machine. Follow your county’s
regulations relating to use of chain saw.
Protective equipment
• 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 (a) 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 (b) 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 (c), ear plugs, etc.). Octave
band analysis upon request.
• The protective jacket (d) 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 (e) is made of a nylon fabric with 22 layers
and protects against cuts. We strongly recommend its use.
• Protective gloves (f) 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 (g) 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.
Fuels/Refuelling
• Stop the engine before refuelling the chain saw.
• Do not smoke or work near open fires (5).
• Let the engine cool down before refuelling.
• Fuels can contain substances similar to solvents. Eyes and skin should not come
in contact with mineral oil products. Always wear protective gloves when refuelling.
Frequently clean and change protective clothes. Do not breathe in fuel vapors.
• Do not spill fuel or chain oil. When you have spilt fuel or oil immediately clean the
chain saw. Fuel should not come in contact with clothes. If your clothes have come
in contact with fuel, change them at once.
SAFETY PRECAUTIONS
2
1
a
b
c
3
5
d
ef
g
4

4
• Ensure that no fuel or chain oil oozes into the soil (environmental protection). Use
an appropriate base.
• Refuelling is not allowed in closed rooms. Fuel vapors will accumulate near the
oor (explosion hazard).
• Ensure to firmly tighten the screw caps of the fuel and oil tanks.
• Change the place before starting the engine (at least 3 m from the place of refuelling)
(6).
• Fuel cannot be stored for an unlimited period of time. Buy only as much as will be
consumed in the near future.
• Use only approved and marked containers for the transport and storage of fuel and
chain oil. Ensure children have no access to fuel or chain oil.
Putting into operation
• Do not work on your own. There must be someone around in case of an
emergency.
• Ensure that there are no children or other people within the working area. Pay
attention to any animals in the working area, as well (7).
Before starting work the chain saw must be checked for perfect function and
operating safety according to the prescriptions.
Check especially the function of the chain brake, the correct mounting of the guide
bar, the correct sharpening and tightening of the chain, the firm mounting of the
sprocket guard, the easy motion of the throttle lever and the function of the throttle
lever lock, the cleanliness and dryness of the handles, and the function of the ON/
OFF switch.
• Put the chain saw only into operation if it is completely assembled. Never use the
chain saw when it is not completely assembled.
• Before starting the chain saw ensure that you have a safe footing.
• Put the chain saw into operation only as described in this instruction manual (8).
Other starting methods are not allowed.
• When starting the chain saw it must be well supported and securely held. The guide
bar and chain must not be in contact with any object.
• When working with the chain saw always hold it with both hands. Take the
rear handle with the right hand and the tubular handle with the left hand. Hold the
handles tightly with your thumbs facing your fingers. It is extremely dangerous to
work with one hand, as the saw can fall through the completed cut uncontrolled
(high risk of injury). Furthermore, it is impossible to control kickback with one hand.
• CAUTION: When releasing the throttle lever the chain will keep on running for
a short period of time (freewheeling).
• Continuously ensure that you have a safe footing.
• Hold the chain saw such that you will not breathe in the exhaust gas. Do not work
in closed rooms (danger of poisoning).
• Switch off the chain saw immediately if you observe any changes in its
operating behavior.
• The engine must be switched off before checking the chain tension, tightening
the chain, replacing it or clearing malfunctions (9).
• When the sawing device is hit by stones, nails or other hard objects, switch off the
engine immediately and check the sawing device.
• When stopping work or leaving the working place switch off the chain saw (9) and
put it down such that nobody is endangered.
• Do not put the overheated power chain saw in dry grass or on any inammable
objects. The mufer is very hot (danger of fire).
• CAUTION: Oil dropping from the chain or guide bar after having stopped the saw
chain will pollute the soil.
Always use an appropriate base.
Kickback
• When working with the chain saw dangerous kickbacks may occur.
• Kickback occurs when the upper part of the end of the guide bar inadvertently
touches wood or other hard objects (10).
• Before the saw chain enters the cut, it can slip to the side or jump (caution: high
risk of kickback).
• This causes the saw to be thrown back toward the user with great force and out of
control. Risk of injury!
In order to prevent kickback, follow these rules:
• Only specially-trained persons should perform plunge cuts, i.e., piercing timber
or wood with the tip of the saw!
• Always observe the end of the guide bar. Be careful when continuing an already
started cut.
• When starting to cut the chain must be running.
6
3 Meter
9
Maintenance
Refuelling
Sharpening the chain
Stopping work
Transport
Putting out of function
7
8
10

5
• Ensure that the chain is always sharpened correctly. Pay special attention to the
height of the depth limiter.
• Never cut several branches at the same time. When cutting a branch ensure that
no other branch is touched.
• When crosscutting a trunk be aware of the trunks next to it.
Working behavior/Method of working
• Only use the chain saw during good light and visibility periods. Be aware of slippery
or wet areas, and of ice and snow (risk of slipping). The risk of slipping is extremely
high when working on recently peeled wood (bark).
• Never work on unstable surfaces. Make sure that there are no obstacles in the
working area, risk of stumbling. Always ensure that you have a safe footing.
• Never saw above your shoulder height (11).
• Never saw while standing on a ladder (11).
• Never climb a tree and work without the appropriate restraining systems for the
operator and the saw. We recommend always working from a rising platform (cherry
picker, lift).
• Do not work leaning too far over.
• Guide the chain saw in such a way that no part of your body is within the elongated
swivelling range of the saw (12).
• Use the chain saw for sawing wood only.
• Avoid touching the ground with the chain saw while it is still running.
• Never use the chain saw for lifting up or removing pieces of wood or other objects.
• Remove foreign objects such as sand, stones and nails found within the working area.
Foreign objects may damage the sawing device and can cause dangerous kickback.
• When sawing precut timber use a safe support (sawing jack, 13). Do not steady the
workpiece with your foot, and do not allow anyone else to hold or steady it.
• For cutting down trees or performing crosscuts, the spike bumper (Z) must be applied
to the wood to be cut (13).
• Secure round pieces against rotation.
• Hold the saw firmly in place to avoid skating (skid movement) or bouncing of the
saw when starting a cut.
• At the end of the cut, be careful to keep your balance due to the “drop”.
• Take into account the direction and speed of the wind. Avoid sawdust and chain
oil mist.
• Do not touch the saw chain just after cutting. It is very hot and may cause burn injury.
• Before performing a crosscut firmly apply the front of the body to the timber, only
then can the timber be cut with the chain running. For this the chain saw is lifted at
the rear handle and guided with the tubular handle. The front of the body serves
as a centre of rotation. Continue by slightly pressing down the tubular handle and
simultaneously pulling back the chain saw. Apply the front of the body a little bit
deeper and once again lift the rear handle.
• When the timber must be pierced for cutting or longitudinal cuts are to be
performed it is urgently recommended to have this carried out by specially
trained persons only (high risk of kickback).
• The saw must be running whenever you remove the chain saw from the wood.
• When performing several cuts the throttle lever must be released in between.
• Be careful when cutting splintery wood. Cut pieces of wood may be pulled along
(risk of injuries).
• When cutting with the upper edge of the guide bar, the chain saw may be pushed in
the direction of the user if the chain gets clamped. For this reason use the lower edge
of the bar whenever possible. The chain saw will then be pushed away from you (14).
11
12
13
14

6
• If the timber is under tension (15), first cut the pressure side (A). Then the crosscut
can be performed on the tension side (B). Thus clamping of the guide bar can be
avoided.
Technique for tree topping
CAUTION:
• People topping trees or cutting of branches must be specially trained. High
risk of injuries!
• When cutting of branches, the chain saw should be supported on the trunk. Do not
use the end of the bar for cutting (risk of kickback).
• Be aware of branches under tension. Do not cut free branches from below.
• Never perform detensioning cuts while standing on the trunk.
• Before topping tree
a) only those people are within the working area which are actually involved in topping
the tree.
b) every worker involved can withdraw without stumbling (the people should withdraw
backwards in a diagonal line, i. e. at a degree of 45°).
c) the bottom part of the trunk is free from foreign objects, underbrush and branches.
Make sure to have a safe footing (risk of stumbling).
d) the next working place is at least 2 1/2 tree lengths away (16). Before cutting down
the tree check the direction of fall and make sure that there are neither people
nor objects within a distance of 2 1/2 tree lengths.
• Judging the tree:
Direction of hanging – loose or dry branches – height of the tree – natural
overhang – is the tree rotten?
• Take into account the direction and speed of the wind. If strong gusts are occurring, do
not do any felling. Avoid sawdust (pay attention to the direction the wind is blowing)!
• Notching the trunk (17, A):
The notch determines the direction of fall and guides the tree. The trunk is notched
perpendicular to the direction of fall and penetrates 1/3 – 1/5 of the trunk diameter.
Perform the cut near the ground.
• When correcting the cut, always do so over the whole width of the notch.
• Cut down the tree (18, B) above the bottom edge of the notch (D). The cut must
be exactly horizontal. The distance between both cuts must be approx. 1/10 of the
trunk diameter.
• The material between both cuts (C) serves as a hinge. Never cut it through,
otherwise the tree will fall without any control. Insert felling wedges in time.
• Secure the cut only with wedges made of plastic or aluminium. Do not use iron
wedges. If the saw hits an iron wedge the chain can be seriously damaged or torn.
• When cutting down a tree always stay sidewards of the falling tree.
• When withdrawing after having performed the cut, be alert for falling branches.
• When working on sloping ground the user of the chain saw must stay above or
sidewards of the trunk to be cut or the tree already cut down.
• Be alert for trunks which may roll towards you.
Transport and storage
• When changing your location during work switch off the chain saw and actuate the
chain brake in order to prevent an inadvertent start of the chain.
• Never carry or transport the chain saw with the chain running.
• When transporting the chain saw over long distances the guide bar protection cover
(delivered with the chain saw) must be applied.
• Carry the chain saw with the tubular handle. The guide bar points backwards (19).
Avoid coming in contact with the mufer (danger of burns).
• Ensure safe positioning of the chain saw during car transportation to avoid fuel or
chain oil leakage.
• Store the chain saw safely in a dry place. It must not be stored outdoors. Keep the
chain saw away from children.
• Before storing the chain saw over a long period of time or shipping it the fuel and
oil tanks must be completely emptied.
• Perform cleaning and maintenance before storage.
B
A
B
15
17
18
19
= cutting down area
45o
21/2
45o
16

7
Maintenance
• Before performing maintenance work switch off the chain saw (20) and pull
out the plug cap.
• Before starting work always check the operating safety of the chain saw, in particular
the function of the chain brake. Make sure the saw chain is properly sharpened and
tensioned (21).
• Operate the chain saw only at a low noise and emission level. For this ensure the
carburetor is adjusted correctly.
• Regularly clean the chain saw.
• Regularly check the tank cap for tightness.
Observe the accident prevention instructions issued by trade associations and
insurance companies. Do not perform any modications on the chain saw. You
will put your safety at risk.
Perform only the maintenance and repair works described in the instruction manual.
All other work must be carried out by MAKITA Service.
Use only original MAKITA spare parts and accessories.
Using spare parts other than original MAKITA parts or accessories and guide bar/
chain combinations or lengths which are not approved bring a high risk of accidents.
We cannot accept any responsibility for accidents and damage resulting from using
sawing devices or accessories which have not been approved.
First aid
For the event of a possible accident, please make sure that a first aid kit is always
immediately available close by.
Immediately replace any items used from the first aid box.
When calling for help, give the following information:
• Place of the accident
• What happened
• Number of injured people
• Kind of injuries
• Your name!
Vibration
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.
21
22
20

8
TECHNICAL DATA
Model EA3700T
Overall length (without guide bar) mm 265
Net weight kg 3.7
Engine type Air cooled, two stroke, single cylinder
Stroke volume cm336.4
Bore mm 40
Stroke mm 29
Max. power at speed kW/min–1 1.7/10,000
Max. torque at speed N•m/min–1 1.7/7,000
Idling speed/max. engine speed with bar and chain min–1 3,000/14,000
Clutch engagement speed min–1 4,000
Carburetor Type Diaphragm
Spark plug Type NGK CMR6H
Electrode gap mm 0.6
Fuel tank capacity cm3290
Chain oil tank capacity cm3220
Mixture ratio (Gasoline: Makita two-stroke oil) 50:1
Chain brake Engages manually or in case of kickback.
Chain speed (at max. power) m/s 19
Sprocket pitch mm (inch) 0.95 (3/8")
Number of teeth Z 6
• Due to our continuing program of research and development, the specifications herein are subject to change without notice.
• Specifications may differ from country to country.
Guide bar and saw chain
Guide bar type Sprocket nose bar
Saw chain Type 91PX
Bar length 300 mm 350 mm 400 mm
Cutting length 290 mm 346 mm 380 mm
No. of drive links 46 52 56
Saw chain Type 91VXL
Bar length 300 mm 350 mm 400 mm
Cutting length 287 mm 342 mm 381 mm
No. of drive links 46 52 56
Saw chain Type 91PX, 91VXL
Pitch 0.95 mm (3/8")
Gauge 1.3 mm (0.05")
• Standard accessories may differ from country to country.
WARNING:
• Use appropriate combination of the guide bar and saw chain. Otherwise personal injury may result.

9
DESIGNATION OF PARTS
1
14
13
15
16
17 18
19
20
56
7
10 11
12
8
9
4
3
2
1. Top handle 2. Front handle 3. Throttle trigger 4. Front hand guard
5. Guide bar 6. Saw chain 7. Air cleaner cover 8. Hook (attachment point)
9. Mufer cover 10. Sprocket cover 11. Chain adjusting screw 12. Retaining nut
13. Combination switch 14. Throttle trigger lock-out 15. Starter grip 16. Oil tank cap
17. Starter case 18. Fuel level gauge 19. Fuel tank cap 20. Guide bar cover

10
CHAIN SAW’S SAFETY FUNCTION
WARNING:
• Following safety functions does NOT guarantee all time protection from injury.
Only proper usage and technique can reduce the risk of kickback and other
dangerous accidents.
• Always check the safety functions before use.
• If the chain saw fails any of the checking, switch off the engine immediately, and do
NOT use the chain saw. Contact Makita authorized service center.
Chain brake
The chain brake is designed to stop the chain to standstill within a fraction of a second.
It is activated when the kickback is sufficiently strong.
To engage the chain brake manually, push the front hand guard forward (forwards the
tip of the saw) with your left hand.
To release the chain brake, pull the front hand guard towards backward (towards you).
NOTICE:
• Do not accelerate the engine with the chain brake actuated (except for testing).
• Always release the chain brake before starting the operation.
Checking the chain brake
1. Run the engine at idle speed.
2. Hold the chain saw with both hands. Hold the top handle with your right hand,
the front handle with your left. Make sure that the guide bar and the chain do not
contact with any object.
3. Push the front hand guard using the back of your hand, until the chain brake
engages.
4. Accelerate till engine reaches full throttle for less than 3 seconds. Make sure that
the saw chain does not move at all.
5. Bring the engine back to idle and release the chain brake.
Checking the brake band
The brake band is at the back of the sprocket cover. Chain brake wears out in course
of time. Have it checked and serviced by Makita authorized service center at least
every 3 month.
Throttle trigger lock-out
Throttle trigger lock-out is designed to prevent accidental start. You can pull the throttle
trigger only when the throttle trigger lock-out is pressed (i.e. when you grasp the handle).
Checking throttle trigger lock-out
Check the throttle trigger lock-out returns its original position after releasing your hand
from the top handle.
Engine stop
Make sure that the engine stops when you intend to.
Checking the engine stop
Start the engine. Then release the throttle trigger, and press down the combination
switch to lower (O) position.
Chain catcher
Chain catcher is designed to catch the chain in case the saw chain jumps from the
guide bar. The saw chain should not jump if it is properly tensioned. Always check
and adjust the tension of the saw chain in accordance with this instruction manual.
Checking chain catcher
Check the chain catcher is not damaged and securely sits on the housing.

11
ASSEMBLY
WARNING:
• Before performing any work on the guide bar or saw chain, always switch off the
engine and make sure that the cutting tool is stopped.
• Always wear protective gloves.
CAUTION:
• Start the chain saw only after having assembled it completely and inspected.
Installing guide bar and saw chain
NOTICE:
• Installing or removing saw chain should be carried out in a clean place free from
sawdust or other foreign material.
Put the chain saw on a stable surface and carry out the following steps:
1. Release the chain brake by pulling the front hand guard.
2. Loosen chain tension fully.
3. Unscrew the retaining nut.
4. Remove the sprocket cover.
NOTICE:
• You can not remove the sprocket cover without releasing the chain brake.
5. Place the guide bar over the bar bolts.
6. Check the direction of the saw chain. The arrows on the saw chain must point the
same direction as the arrow on the saw housing.
7. Fit the saw chain at the sprocket first, then fit the saw chain on the guide bar tip.
8. Lift the saw chain over the chain catcher. And place the sprocket cover as the pin
on the sprocket cover meets its counterpart on the housing.
9. Tighten the retaining nut to secure the sprocket cover, then loosen it a bit for tension
adjustment.
10. Adjust the saw chain tension. (See the section “Adjusting saw chain tension” step
3 and after.)
NOTE:
• In order to gain uniform wear of the guide bar, turned it over when replacing the chain.

12
Adjusting saw chain tension
CAUTION:
• Excessively loose saw chain may jump off the bar, and therefore presents an accident
risk. If the saw chain is too loose, adjust it.
• Excessively high tension of saw chain may cause breakage of saw chain, wear of
the guide bar and breakage of the adjusting screw/dial.
The saw chain may become loose after many hours of use. When you change the
saw chain or after some hours of operation, check the saw chain tension before use.
Properly adjusted saw chain contributes good performance and tool’s long life.
The tension of the chain is correct if the chain rests against the bottom side of the
guide bar and can still be easily turned by hand.
Check the chain tension frequently, new chain tends to become longer during use.
To adjust tension of the saw chain, perform the following procedure:
1. Release the chain brake by pulling the front hand guard.
2. Unscrew the retaining nut a bit to loosen the sprocket cover.
3. Slightly lift and hold the tip of the guide bar.
4. Turn the chain adjusting screw to adjust the saw chain tension.
5. Adjust the chain tension until the lower side of the saw chain fits in the guide bar
rail (see circle in the figure).
During adjusting the chain tension, keep lifting up the tip of the guide bar.
6. Keep holding the guide bar lightly, and tighten the sprocket cover after adjusting
the chain tension.
Tighten the retaining nut to secure the sprocket cover.
7. Make sure that the saw chain does not loose at lower side but it fits snugly against
the lower side of the bar, and can still be easily turned by hand.

13
BEFORE USE
WARNING:
• AVOID SKIN AND EYE CONTACT. Mineral oil products degrease your skin. If your skin comes in contact with these substances repeatedly
and for an extended period of time, it may dry your skin. Various skin diseases may result. In addition, allergic reactions are known to occur.
Eyes can be irritated by contact with oil. If oil comes into your eyes, immediately wash them with clear water. If your eyes are still irritated, see
a doctor immediately.
Fuel
CAUTION:
• Be especially careful when handling gasoline.
• Do not smoke. Keep tool well away from open ames, spark, or fire (explosion hazard).
Fuel mixture
This tool is powered by a high-performance air-cooled two stroke engine. It runs on a mixture of gasoline and two-stroke engine oil.
The engine is designed for unleaded regular gasoline with a min. octane value of 90 RON (87 AKI), and ethanol contained no more than 10%. In
case no such fuel is available, you can use fuel with a higher octane value. This will not affect the engine.
In order to obtain an optimum engine output and to protect your health and the environment use unleaded fuel only.
Use only Makita two-stroke engine oil or equivalent high-quality two-stroke engine oil, as they are designed for air cooled two-stroke engines. Mix
engine oil with fuel.
CAUTION:
• Do not use ready-mixed fuel from petrol stations.
The correct mixture ratio: Mix 50 parts gasoline with 1 part Makita two-stroke engine oil.
NOTE:
• For preparing the fuel-oil mixture first mix the entire oil quantity with half of the fuel required, then add the remaining fuel. Thoroughly shake the
mixture before filling it into the chain saw tank.
Do not add more engine oil than specified. Incorrect mixture ratio of oil results in making more polluting combustion residues. It also causes clog
exhaust channel in the cylinder and mufer, and causes poor performance and excessive fuel consumption.
The Storage of Fuel
Fuels have a limited storage life. Fuel mixtures age through evaporation, especially at high temperatures. Aged fuel and fuel mixtures can cause
starting problems and damage the engine. Purchase only that amount of fuel, which will be consumed over the next few months. At high temperatures,
once fuel has been mixed it should be used up in 6-8 weeks.
Preserve fuel only in proper containers, in dry, cool, secure locations.
Chain oil
Use oil with adhesive additive for lubricating the chain and guide bar. The adhesive additive prevents the oil from being ung off the chain too quickly.
We recommend the use of Makita genuine chain oil or chain oil which is bio-degradable in order to protect the environment. The use of bio-degradable
oil may even be required by local regulations.
Bio-degradable oil is stable only for a limited period of time. Use it within 2 years from the date of manufacture (printed on the container).
Important note on bio-degradable chain oils
If you are not planning to use the saw again for an extended period of time, empty the oil tank and put in a small amount of regular engine oil (SAE
30), and then run the saw for a time. This is necessary to ush out all remaining bio-degradable oil from the oil tank, oil-feed system, chain and
guide bar, as many such oils tend to leave sticky residues over time, which can cause damage to the oil pump or other parts.
NEVER USE WASTE OIL
Waste oil is very dangerous for the environment.
Waste oil contains high amounts of carcinogenic substances.
Residues in waste oil result in extreme wear and scuff at the oil pump and the sawing device.
In case of damage caused by using waste oil or inappropriate chain oil the product warranty will be void.

14
Refuelling and relling chain oil
WARNING:
• FOLLOW THE SAFETY PRECAUTIONS. Be careful and cautious when handling
fuels.
• Switch off the engine.
CAUTION:
• Clean the tank cap and the area around the tank after refuelling.
Refuel or refill the chain oil as follows:
1. Thoroughly clean the area around the caps, to prevent dirt from getting into the
fuel or oil tank.
2. Unscrew the cap and fill the each tanks with fuel (fuel/oil mixture) and chain oil
respectively.
3. Fill up to the bottom edge of the filler neck. Be careful not to spill fuel or chain oil!
4. Tighten the tank caps by hand as far as it goes.
Lubricating the chain
WARNING:
• Check the chain oil tank only when the engine is switched off.
Make sure there is sufficient chain oil in the chain oil tank to provide good chain
lubrication during operation.
Before operation or refueling, check the chain oil level and refill if necessary.
Adjusting the chain lubrication
WARNING:
• Switch off the engine.
You can adjust the oil pump feed rate with adjusting screw. There are three degrees
of the oil pump feed rate, i.e. high, middle or low.
Adjusting screw locates at the top of the chain saw. Use a screwdriver and adjust the
amount of oil delivery appropriately.
Cleaning the oil guide
To ensure secure operation of the oil pump, clean the oil guide groove at the housing
and the oil feed hole in the guide bar regularly.
Checking the chain lubrication
CAUTION:
• Never work with the chain saw without sufficient chain lubrication. Otherwise the
service life of the saw chain and guide bar is reduced.
• Before starting work check the oil level in the tank and the oil feed.
• Pay attention to the direction of the wind and avoid unnecessary exposure to the
oil spray.
Check the oil feed rate as follows:
1. Start the chain saw.
2. Hold the running chain saw approx. 15 cm (6") above a trunk or the ground (use
an appropriate base).
3. If the lubrication is sufficient, you can see light oil trace because oil is scattered off
the chain.
NOTE:
• After turning off the chain saw, it is normal that residual chain oil drips from the oil
feed system, the guide bar and the chain for a while. This does not mean a defect.
Place the saw on a suitable surface.

15
STARTING AND STOPPING ENGINE
WARNING:
• Do not start the engine before the chain saw is completely assembled and checked.
CAUTION:
• Move at least 3 meters (10 ft.) away from the place where the chain saw is fuelled.
• Make sure you have a secure footing, and place the saw on the ground.
• Make sure the guide bar and saw chain does not touch anything.
• Do not forget to activate chain brake before starting the engine.
NOTICE:
• Never pull the rope to the full extension.
• Return the starter grip gently into the housing. Otherwise released starter grip may
hit your body or it may not rewind appropriately.
• The engine must be put in idle immediately after starting. If not, the clutch can be
damaged, ask Makita authorized service center.
Starting the engine
1. Activate the chain brake (lock).
2. Hold the front handle firmly with left hand and press the chain saw against the
ground.
3. Hold down air cleaner cover with your right knee.
4. Start the engine in accordance with engine circumstances as follows.
Cold start
When the engine is not used just before starting, perform the following steps:
1. Push the primer pump several times until fuel comes into the primer pump. (In
general, 7 to 10 pushes.)
2. Move the combination switch to the choke position. This also actuates the half-
throttle lock.
3. Pull the starter grip slowly until feeling compression. Then pull it strongly. It may
take two to four attempts until engine fires.
4. As soon as the engine fires, move the combination switch to the middle (I) position.
Then pull the starter grip strongly again until the engine starts running.
5. Grasp the top handle (the throttle trigger lock-out is released by the grasp) and
pull the throttle trigger for a little, and release it.
6. Release the chain brake.
Warm start
When the engine is used just before starting and still warm, you can restart the engine
by simply pulling the starter grip. If the engine does not start, perform the following steps:
1. Push the primer pump several times until fuel comes into the primer pump. (In
general, 7 to 10 pushes.)
2. Move the combination switch to the choke position, and then back to the middle
(I) position.
3. Pull the starter grip slowly until feeling compression. Then pull it strongly. It may
take two to four attempts until engine starts. If the engine does not start, perform
the steps of cold start (see the section “Cold start”).
As soon as the engine starts running, grasp the top handle (the throttle trigger lock-
out is released by the grasp) and pull the throttle trigger for a little then release it.
4. Release the chain brake.

16
Stopping the engine
Release the throttle trigger, and then press down the combination switch to (O) position.
NOTICE:
• Do not stop the engine by pressing the combination switch to choke position. It
makes difficult to restart the engine.
After being pressed down, the combination switch reverts to (I) position automatically.
The engine stops with this switch off, but is ready to start.
To cut off the ignition current, push the combination switch all the way down past the
resistance point to lock it at (O) position.
Adjusting idle speed
WARNING:
• Do not adjust idle speed before the chain saw is completely assembled and checked.
• If the saw chain still moves at idle speed even after adjustment, stop using the
chain saw immediately, and bring it to Makita authorized service center for repair.
CAUTION:
• Do not adjust the screws (H) and (L) in the illustration.
If the saw chain moves in idle without pulling throttle trigger, it is necessary to adjust
the idle speed.
Adjust the idle speed as follows:
1. Start and warm up the engine for two or three minutes, but do not drive the engine
at high speed.
2. To reduce the idle speed, turn the adjusting screw counterclockwise.
3. To increase the idle speed, turn the adjusting screw clockwise.
4. Make sure the saw chain does not move at idle speed.
Prevention from carburetor icing
NOTICE:
• When environmental temperature is higher than 5°C, always return the lever to
normal (sun mark) setting. Otherwise the engine may be damaged by overheating.
When the environmental temperature is low (0°C – 5°C) and humidity is high, water
vapor may freeze inside the carburetor and the engine drives unsteadily (carburetor
icing). Change the setting of the lever as follows if necessary.
1. Remove the mufer cover.
2. Pull the lever (snow mark direction).
3. Return the mufer cover and sprocket cover.

17
MAINTENANCE
WARNING:
• Make sure that the chain saw is switched off the engine and pull the plug cap off
the spark plug before performing maintenance or inspection.
• Wait until the engine cools down before performing any maintenance work.
• Always wear protective gloves.
• Start the chain saw only after having assembled and inspected it completely.
• Keep away from open ames and do not smoke.
CAUTION:
• To maintain product SAFETY and RELIABILITY, any repair, maintenance or
adjustment work that is not included in this manual should be performed by Makita
Authorized Service Centers. Always use Makita replacement parts.
Sharpening the saw chain
The chain needs sharpening when:
• Chips produced by cutting look like sawdust.
• The chain penetrates the wood only under great pressure.
• The cutting edge is visibly damaged.
• The saw is pulled to the left or right when sawing. This is caused by uneven
sharpening of the chain.
NOTICE:
• Sharpen frequently, but without removing too much. Generally, two or three strokes
of the file are enough.
• Have the chain resharpened at a service centre when you have already sharpened
it yourself several times.
Proper sharpening
CAUTION:
• Use only chains and guide bars designed for this saw.
• Excessive depth (3) increases the risk of kickback.
Sharpening criteria (for saw chain 91PX, 91VXL)
• Maintain all cutter parts (1) on the saw chain the same length. Cutter parts with
different lengths result in rough running of the chain and can cause cracks in the
chain.
• The minimum cutter length (2): 4 mm. Do not sharpen the chain when the cutter part
length becomes less than 4 mm. At this point, replace the saw chain.
• The depth of the cut (3) is determined by the difference in height between the depth
gauge (round nose) and the cutting edge.
• The best results are obtained with 0.64 mm (.025") of the depth.
• Maintain the same sharpening angle of 30° for all the cutter parts.
• Use a proper round file so that proper sharpening angle of 55° is kept against the
teeth.
• Sharpen the cutters with proper angle, otherwise it may cause rough and irregular
chain running, and result in increasing wear and breakage of the saw chain.
33
1
11
2
55 55

18
Files and le guiding
• Use a special round file (optional accessory) for saw chains sharpening. Normal
round files are not suitable.
• Use the round file of diameter 4.0 mm.
• The file should only engage the cutter part on the forward stroke. Lift the file off the
cutter part on the return stroke.
• Sharpen the shortest cutter first. Then the length of this shortest cutter becomes
the standard for all other cutters on the saw chain.
• Guide the file as shown in the figure.
• A file holder (optional accessory) makes file guidance easier. The file holder has
markings for the correct sharpening angle of 30°. When using the file holder, align the
markings parallel to the saw chain, and limit the filing depth to 4/5 of the file diameter.
• After sharpening the chain, check the depth of the cut using the chain gauge tool
(optional accessory).
• Remove the small excess with a special at file (optional accessory).
• Round off the front of the depth gauge.
Replacing the starter rope
In case the starter rope is cut, replace the rope as follows.
NOTE:
• In case you simply replace the rope, firstly untie the knot of the starter grip, remove
the starter grip and release tension of the spiral spring. Otherwise the tensioned
spiral spring may spring out from the housing.
1. Remove the screws and remove the starter case.

19
2. Remove the screw (1). Slowly remove the ratchet wheel (2), damper spring (3)
and reel (4).
3. Remove the old rope from the reel and starter grip.
4. Pass the new rope through the starter grip, and make a knot as illustrated.
5. Pass another end of the rope through the rope guide of the starter case.
6. Pass that end of the rope through the rope guide of the reel, and make a knot. Pull
the rope lightly to place the knot into the reel.
7. Place the reel onto the starter case as the hook on the back of the reel engages
with the hook of the spiral spring.
(1)
(3)
(2)
(4)

20
8. Return the damper spring and the ratchet wheel. Fit the end of the damper spring
to the hole of the ratchet wheel. And then tighten them with the screw.
9. Place the starter rope onto the dented part of the reel.
10. Rotate the ratchet wheel clockwise five turns while keep the starter rope onto the
dented part.
11. Remove the starter rope from the dented part. Slowly rewind the rope by the spring force.
If the starter rope is not wound enough and the starter grip hangs too loose, pull
the starter rope, place the rope on the dented part, and make two more turns to
increase the tension of the rope.
12. To check the tension, while pulling the starter rope fully and holding it, turn the
ratchet wheel. Make sure that the ratchet wheel still can make half turn at that
state. If it does not turn, rope tension is too tight. In that case, remove the starter
grip from the rope, and then release and rewind the starter rope again.
NOTICE:
• The tool may be broken if the rope tension is too tight.
13. Fit the starter case in position and tighten it with screws.
Cleaning the inside of the sprocket cover
Remove the sprocket cover, the saw chain and guide bar.
Clean the inside of the sprocket cover with a brush.
NOTICE:
• Make sure there are no residues or foreign matter remaining in the oil guide groove,
chain tension pin, and brake band.
Cleaning the guide bar
Check the running surfaces of the bar regularly for damage. Clean it with using a
suitable tool.