Page 1
ENGLISH
Chain Saw
MODEL UC3020A
MODEL UC3520A
MODEL UC4020A
DOUBLE
INSULATION
INSTRUCTION MANUAL
WARNING:
For your personal safety, READ and UNDERSTAND before using.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
006906
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SPECIFICATIONS
Model UC3020A UC3520A UC4020A
Max. chain speed (m/s) 13.3
Cutting length 300 mm 350 mm 400 mm
Saw chain
Acoustic power level L WA av dB (A)
to EN 50144 -1 1)
Sound pressure level L pA av dB (A)
at the workplace to EN 50144 -1 1)
Vibration acceleration a h,w av to ISO 50144-2-13 1)
1) The data assign equal weight to the full-load and maximum speed operating conditions.
- Front handle m/s
- Rear handle m/s
Oil pump Automatic
Oil tank capacity (l) 0.20
Power transmission Direct
Chain brake Manual
Run-down brake Mechanical
Overall length (without guide bar) 436 mm
Net weight 3.8 kg
Extension cable (optional)
• Due to our continuing programme of research and development, the specifications herein are subject to change
without notice.
• Note: Specifications may differ from country to country.
Symbols
The following show the symbols used for the tool. Be
sure that you understand their meaning before use.
...................Read instruction manual and follow
the warnings and safety instructions.
Type 90SG
Pitch 3/8”
2
2
END218-1
3.4 3.9
4.0 4.5
DIN 57282/HO 7RN -F L=30 m max.,3x1.5 mm
....................Wear a helmet, goggles and ear pro-
....................Wear safety gloves!
....................Withdraw the mains plug!
105.3
92.3
2
tection!
...................DOUBLE INSULATION
....................Caution: particular care and attention
required!
....................Caution: withdraw the mains plug
immediately if the cable is damaged!
....................Caution: kickback!
....................Protect against rain and damp!
2
....................First aid
RE Y
...........Recycling
....................CE marking
............Maximum permissible length of cut
............Direction of chain travel
....................Chain oil
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............Chain brake released/applied
....................Prohibited!
..................Only for EU countries
Do not dispose of electric equipment
together with household waste material!
In observance of European Directive
2002/96/EC on waste electric and
electronic equipment and its implementation in accordance with
national law, electric equipment that
have reached the end of their life
must be collected separately and
returned to an environmentally compatible recycling facility.
Intended use
The tool is intended for cutting lumbers and logs.
Power supply
The tool should be connected only to a power supply of
the same voltage as indicated on the nameplate, and
can only be operated on single-phase AC supply. They
are double-insulated in accordance with European
Standard and can, therefore, also be used from sockets
without earth wire.
For public low-voltage distribution systems of
between 220 V and 250 V.
Switching operations of electric apparatus cause voltage
fluctuations. The operation of this device under unfavorable mains conditions can have adverse effects to the
operation of other equipment. With a mains impedance
equal or less than 0.35 Ohms it can be presumed that
there will be no negative effects. The mains socket used
for this device must be protected with a fuse or protective circuit breaker having slow tripping characteristics.
ENH016-4
EC-DECLARATION OF CONFORMITY
The undersigned, Kato, as authorized by, declare that
the MAKITA machines,
Type:
211
EU model identification No.:
UC3020A, UC3520A, UC4020A: M6 05 10 24243 064
complies with the standard safety and health require-
ments of the pertinent EU guidelines:
EU machinery guideline 98/37/EC, EU EMC guideline
2004/108/EC, Noise emission 2000/14/EG.
The requirements of the above EU guidelines were
implemented chiefly on the basis of the following standards: EN60745-2-13, EN55014-1, EN55014-2,
EN61000-3-2, EN61000-3-3. The conformity assessment procedure 2000/14/EG was performed per Annex
V. The measured sound power level (Lwa) is 100 dB(A).
The guaranteed sound power level (Ld) is 101 dB(A).
The EU Type-Examination per 98/37/EG was performed
by: TUV Product Service GmbH, Zertifizierungsstelle,
Ridlerstra e 31, D-80339 M nchen.
CE2007
To m o y a s u K at o
Responsible Manufacturer:
Makita Corporation
3-11-8, Sumiyoshi-cho, Anjo, Aichi, JAPAN
Authorized Representative in Europe:
Makita International Europe Ltd.
Michigan Drive, Tongwell, Milton Keynes, Bucks MK15
8JD, ENGLAND
Director
SAFETY INSTRUCTIONS ENA001-2
WARNING:
When using electric tools, basic safety precautions, including the following,
should always be followed to reduce the risk of fire, electric shock and
personal injury. Read all these instructions before operating this product
and save these instructions.
For safe operations:
1. Keep work area clean.
Cluttered areas and benches invite injuries.
2. Consider work area environment.
Do not expose power tools to rain. Do not use
power tools in damp or wet locations. Keep work
area well lit. Do not use power tools where there is
risk to cause fire or explosion.
3. Guard against electric shock.
Avoid body contact with earthed or grounded surfaces (e.g. pipes, radiators, ranges, refrigerators).
3
Page 4
4. Keep children away.
Do not let visitors touch the tool or extension cord.
All visitors should be kept away from work area.
5. Store idle tools.
When not in use, tools should be stored in a dry,
high or locked up place, out of reach of children.
6. Do not force the tool.
It will do the job better and safer at the rate for which
it was intended.
7. Use the right tool.
Do not force small tools or attachments to do the job
of a heavy duty tool. Do not use tools for purposes
not intended; for example, do not use circular saws
to cut tree limbs or logs.
8. Dress properly.
Do not wear loose clothing or jewellery, they can be
caught in moving parts. Rubber gloves and non-skid
footwear are recommended when working outdoors.
Wear protecting hair covering to contain long hair.
9. Use safety glasses and hearing protection.
Also use face or dust mask if the cutting operation is
dusty.
10. Connect dust extraction equipment.
If devices are provided for the connection of dust
extraction and collection facilities ensure these are
connected and properly used.
11. Do not abuse the cord.
Never carry the tool by the cord or yank it to disconnect it from the socket. Keep the cord away from
heat, oil and sharp edges.
12. Secure work.
Use clamps or a vice to hold the work. It is safer
than using your hand and it frees both hands to
operate the tool.
13. Do not overreach.
Keep proper footing and balance at all times.
14. Maintain tools with care.
Keep cutting tools sharp and clean for better and
safer performance. Follow instructions for lubrication and changing accessories. Inspect tool cord
periodically and if damaged have it repaired by an
authorized service facility. Inspect extension cords
periodically and replace, if damaged. Keep handles
dry, clean and free from oil and grease.
15. Disconnect tools.
When not in use, before servicing and when changing accessories such as blades, bits and cutters.
16. Remove adjusting keys and wrenches.
Form the habit of checking to see that keys and
adjusting wrenches are removed from the tool
before turning it on.
17. Avoid unintentional starting.
Do not carry a plugged-in tool with a finger on the
switch. Ensure switch is off when plugging in.
18. Use outdoor extension leads.
When tool is used outdoors, use only extension
cords intended for outdoor use.
19. Stay alert.
Watch what you are doing. Use common sense. Do
not operate tool when you are tired.
20. Check damaged parts.
Before further use of the tool, a guard or other part
that is damaged should be carefully checked to
determine that it will operate properly and perform
its intended function. Check for alignment of moving
parts, free running of moving parts, breakage of
parts, mounting and any other conditions that may
affect its operation. A guard or other part that is
damaged should be properly repaired or replaced
by an authorized service center unless otherwise
indicated in this instruction manual. Have defective
switches replaced by an authorized service facility.
Do not use the tool if the switch does not turn it on
and off.
21. Warning.
The use of any accessory or attachment, other than
those recommended in this instruction manual or
the catalog, may present a risk of personal injury.
22. Have your tool repaired by a qualified person.
This electric tool is in accordance with the relevant
safety requirements. Repairs should only be carried
out by qualified persons using original spare parts,
otherwise this may result in considerable danger to
the user.
ENB098-1
ADDITIONAL SAFETY RULES
1. Read the instruction manual in order to familiarize
yourself with operation of the chain saw.
2. Before using the chain saw for the first time,
arrange to have instruction in its operation. If this is
not possible, at least practice cutting round timber
on a trestle before beginning work.
3. The chain saw must not be used by children or
young persons under 18 years of age. Young persons over 16 years of age may be exempted from
this restriction if they are undergoing training under
the supervision of an expert.
4. Working with the chain saw requires a high level of
concentration. Do not work with the saw if you are
not feeling fit and well. Carry out all work calmly
and carefully.
5. Never work under the influence of alcohol, drugs or
medication.
Proper use
1. The chain saw is intended solely for cutting wood.
Do not use it for example to cut plastic or porous
concrete.
2. Only use the chain saw for operations described in
this instruction manual. Do not, for example, use it
to trim hedges or for similar purposes.
3. The chain saw must not be used for forestry work,
i.e. for felling and limbing standing timber. The
chain saw cable does not provide the operator with
the mobility and safety required for such work.
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4. The chain saw is not intended for commercial use.
5. Do not overload the chain saw.
Personal protective equipment
1. Clothing must be close-fitting, but must not
obstruct mobility.
2. Wear the following protective clothing during work:
• A tested safety helmet, if a hazard is presented
by falling branches or similar;
• A face mask or goggles;
• Suitable ear protection (ear muffs, custom or
mouldable ear plugs). Octave brand analysis
upon request.
• Firm leather safety gloves;
• Long trousers manufactured from strong fabric;
• Protective dungarees of cut-resistant fabric;
• Safety shoes or boots with non-slip soles, steel
toes, and cut-resistant fabric lining;
• A breathing mask, when carrying out work
which produces dust (e.g. sawing dry wood).
Protection against electric shock
...................The chain saw must not be used in
1. Only plug the saw into earthed sockets in tested
electrical circuits. Check that the system voltage
matches that on the rating plate. Ensure that a 16
A line fuse is fitted. Saws used in the open air must
be connected to a residual current-operated circuitbreaker with an operating current no higher than 30
mA.
...................Should the connecting cable be dam-
wet weather or damp environments,
as the electric motor is not waterproof.
aged, withdraw the mains plug immediately.
Safe working practices
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 fitted
correctly;
• The chain has been sharpened and tensioned
in accordance with the regulations;
• The mains cable and mains plug are
undamaged;
Refer to the “CHECKS “ section.
2. Always ensure in particular that the extension
cable used is of adequate cross-section (see
“SPECIFICATIONS”). When using a cable reel,
wind the cable completely off the reel. When using
the saw in the open air, ensure that the cable
employed is intended for open-air use and is rated
accordingly.
3. Do not operate the chain saw in the vicinity of flammable dust or gases, as the motor generates
sparks and presents a risk of explosion.
4. Work only on firm ground and with a good footing.
Pay particular attention to obstacles (e.g. the
cable) in the working area. Take particular care
where moisture, ice, snow, freshly cut wood or bark
may make surfaces slippery. Do not stand on ladders or trees when using the saw.
5. Take particular care when working on sloping
ground; rolling trunks and branches pose a potential hazard.
6. Never cut above shoulder height.
7. Hold the chain saw with both hands when
switching it on and using it. Hold the rear handle
with your right hand and the front handle with your
left. Hold the handles firmly with your thumbs. The
bar and the chain must not be in contact with any
objects when the saw is switched on.
8. Clean the area to be cut of foreign objects such as
sand, stones, nails, wire, etc. Foreign objects damage the bar and chain, and can lead to dangerous
kickback.
9. Take particular care when cutting in the vicinity of
wire fences. Do nut cut into the fence, as the saw
may kick back.
10. Do not cut into the ground.
11. Cut pieces of wood singly, not in bunches or
stacks.
12. Avoid using the saw to cut thin branches and roots,
as these can become entangled in the chain saw.
Loss of balance presents a hazard.
13. Use a secure support (trestle) when cutting sawn
timber.
14. Do not use the chain saw to prise off or brush away
pieces of wood and other objects.
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15. Guide the chain saw such that no part of your body
is within the extended path of the saw chain (see
figure).
16. When moving around between sawing operations,
apply the chain brake in order to prevent the chain
from being operated unintentionally. Hold the chain
saw by the front handle when carrying it, and do
not keep your finger on the switch. Withdraw the
mains plug when taking breaks or leaving the chain
saw unattended. Leave the chain saw where it cannot present a hazard.
17. Withdraw the mains plug when taking breaks or
leaving the chain saw unattended. Leave the chain
saw where it cannot present a hazard.
Kickback
1. Hazardous kickback may arise during work with the
chain saw. Kickback arises when the tip of the bar
(in particular the upper quarter) comes into contact
with wood or another solid object. This causes the
chainsaw to be deflected in the direction of the
operator.
• When bucking, keep clear of adjacent trunks.
Always observe the bar tip.
• Use a trestle.
Safety features
1. Always check that that the safety features are in
working order before starting work. Do not use the
chain saw if the safety features are not working
properly.
- Chain brake:
The chain saw is fitted with a chain brake which
brings the saw chain to a standstill within a fraction
of a second. It is activated when the hand guard is
pushed forwards. The saw chain then stops within
0.15 s, and the power supply to the motor is interrupted.
- Run-down brake:
12
The chain saw is equipped with an run down brake
which brings the saw chain to an immediate stop
when the ON/OFF switch is released. This prevents the saw chain from running on when
switched off, and thus presenting a hazard.
-The front and rear hand guards protect the
user against in jury from pieces of wood which
may be thrown backwards, or a broken saw
chain.
-The trigger lockout prevents the chain saw
from being switched on accidentally.
-The chain catcher protects the user against
injury should the chain jump or break.
2. In order to avoid kickback, observe the following:
• Never begin the cut with the tip of the bar.
• Never use the tip of the bar for cutting. Take
particular care when resuming cuts which have
already been started.
• Start the cut with the chain running.
• Always sharpen the chain correctly. In
particular, set the depth gauge to the correct
height (refer to “Sharpening the chain “ for
details).
• Never saw through several branches at a time.
• When limbing, take care to prevent the bar
from coming into contact with other branches.
6
Transport and storage
...................When the chain saw is not in use or
1. Carry the chain saw by the front handle only, with
the bar pointing backwards.
2. Keep the chain saw in a secure, dry and locked
room out of the reach of children. Do not store the
chain saw outdoors.
is being transported, withdraw the
mains plug and fit the scabbard supplied with the saw. Never carry or
transport the saw with the saw chain
running.
Page 7
Maintenance
1. Withdraw the plug from the socket before carrying
out any adjustments or maintenance.
2. Check the power cable regularly for damage to the
insulation.
3. Clean the chain saw regularly.
4. Have any damage to the plastic housing repaired
properly and immediately.
5. Do not use the saw if the switch trigger is not working properly. Have it properly prepared.
6. Under no circumstances should any modifications
be made to the chain saw. Your safety is at risk.
7. Do not carry out maintenance or repair work other
than that described in this instruction manual. Any
other work must be carried out by MAKITA Service.
8. Only use original MAKITA replacement parts and
accessories intended for your model of saw. The
use of other parts increases the risk of accident.
9. MAKITA accepts no responsibility for accidents or
damage should non-approved bars, saw chains or
other replacement parts or accessories be used.
Refer to the “Extract from the spare parts list “ for
approved saw bars and chains.
First aid
...................Do not work alone. Always work
1. Always keep a first-aid box to hand. Replace any
items taken from it immediately.
2. Should you request assistance in the event of an
accident, state the following:
• Where did the accident happen?
• What happened?
• How many persons are injured?
• What injuries do they have?
• Who is reporting the accident?
NOTE:
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!
within shouting distance of a second
person.
SAVE THESE INSTRUCTIONS.
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Parts supplied
006907
4
3
2
1
5
7
6
8
11
9
10
13
12
15
14
006996
1
Rear handle
Switch trigger
2
Oil filter cap
3
Front handle
4
Front hand guard
5
6
Guide bar
Saw chain
7
Lever
8
Sprocket cover
9
Oil level sight
10
Rear hand guard
11
Serrated rail
12
(claw stop)
Lock-off button
13
14
Chain catcher
Scabbard
15
8
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FUNCTIONAL
DESCRIPTION
1. Lock-off button
2. Switch trigger
1
CAUTION:
• Always be sure that the tool is switched off and unplugged before
adjusting or checking function on the tool.
006910
Switch action
2
CAUTION:
• Before plugging in the tool, always check to see that the switch trigger
actuates properly and returns to the “OFF” position when released.
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
3
4
1. Press in
2. Loosen
3. Sprocket
4. Adjusting dial
CAUTION:
• Always be sure that the tool is switched off and unplugged before
carrying out any work on the tool.
Installing or removing saw chain
CAUTION:
• Always be sure that the tool is switched off and unplugged before
installing or removing the saw chain.
• Always wear gloves when installing or removing the saw chain.
006938
1
2
006939
1. To remove the saw chain, move the lever in the upright position.
2. Press the lever and with the lever pressed in, turn it counterclockwise to
loosen the nut until sprocket cover comes off. (Pressing in the lever leads
to the fitting of lever into the nut.)
3. Turn the adjusting dial counterclockwise to release the saw chain tension.
4. Remove the sprocket cover.
5. Remove the saw chain and guide bar from the chain saw.
6. To install the saw chain, fit in one end of the saw chain on the top of the
guide bar and the other end of it around the sprocket.
At this time, fit the saw chain as shown in the figure because it rotates in the
direction of arrow.
7. Rest the guide bar in place on the chain saw
1. Sprocket
1
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1. Adjusting pin
1. Hook
2. Hole
3. Small hole
006940
8. Turn the adjusting dial counterclockwise to slide the adjusting pin in the
direction of arrow.
1
006941
9. Place the sprocket cover on the chain saw so that the hook at its back
cover is inserted into a hole in the chain saw and the adjusting pin is
positioned in a small hole in the guide bar.
1
3
2
006942
1
2
3
10. Press in the lever and with the lever depressed turn it fully clockwise to
tighten the nut. Then make it about a quarter turn counterclockwise to
loosen the nut lightly.
1. Press in
2. Tighten
3. Loosen
1. Lever
10
1
006933
Adjusting saw chain tension
The saw chain may become loose after many hours of use. From time to time
check the saw chain tension before use.
Move the lever in the upright position.
Page 11
1. Press in.
2. Loosen
1
Press in the lever. With the lever depressed, make a quarter turn on it counter-
006934
1
clockwise to loosen the nut lightly. (Pressing in the lever leads to the fitting of
lever into the nut.)
2
006935
Turn the adjusting dial to adjust saw chain tension. Grasp the saw chain in the
2-4mm
2
middle of the guide bar and lift up. The gap between the guide bar and the tie
strap of the saw chain should be approx. 2 - 4 mm. If the gap is not approx. 2 4 mm, slightly turn the adjusting dial which secures the guide bar. At this time,
adjust with the tip of guide bar slightly pointing up.
5
1. Low
2. High
3. Adjusting dial
4. Guide bar
5. Saw chain
1. Press in
2. Tighten
3
4
With the lever depressed, turn it fully clockwise to tighten the nut firmly.
006936
1
2
006937
Return the lever to its original position.
CAUTION:
• Excessively high tension of saw chain may cause breakage of saw chain,
wear of the guide bar and breakage of the adjusting dial.
• Installing or removing saw chain should be carried out in a clean place
free from sawdust and the like.
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OPERATION
Reclaimend
oil
1. Oil filler cap
006921
006922
1
Lubrication
CAUTION:
• Always be sure that the tool is switched off and unplugged before
lubricating the saw chain.
Lubricate the saw chain and bar using a biologically degradable saw chain oil
with an adhesion agent. The adhesion agent in the saw chain oil prevents the
oil from being thrown off the saw excessively quickly. Mineral oils must not be
used, as they are harmful to the environment.
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, flush the
affected eye immediately with clear water, then consult a doctor at once.
• Never use waste oil. Waste oil contains 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.
• 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.
Clean the area around the oil filler cap shown in the figure thoroughly to prevent any dirt from entering the oil tank.
Unscrew the oil filler cap and add oil up to the lower edge of the filler neck.
Screw the oil filler cap firmly back in place.
Wipe away any spilt chain oil carefully.
When the chain saw is used for the first time, it may take up to two minutes for
the saw chain oil to begin its lubricating effect upon the saw mechanism. Run
the saw without load until it does so (see “CHECKS “).
1
2
1. Low
2. High
3. Adjusting dial
4. Guide bar
5. Saw chain
12
CHECKS
Before starting work, carry out the following checks:
006935
Checking the chain tension
2-4mm
5
3
4
WAR NI NG:
• Always withdraw the mains plug before checking the chain tension, and
wear safety gloves.
The saw chain is correctly tensioned when it is in contact with the underside of
the bar and can be raised approximately 2 - 4 mm from the bar by light finger
pressure.
Check the chain tension frequently, as new chains are subject to elongation. A
chain which is too slack can jump off the bar, and therefore presents an accident risk.
If the chain is too slack: Refer to the section titled “ Adjusting saw chain tension
“ and adjust the saw chain tension again.
Page 13
1. Lock-off button
2. Switch trigger
23
1. Hand guard
2. Lock
3. Unlock
1. Sight glass
1
1
Checking the switch action
006910
CAUTION:
Always unplug the tool before testing the switch trigger. Locking the switch
2
trigger in the ON position is prohibited.
It must not be possible to depress the switch trigger unless the lock-off button
is first depressed.
The switch trigger must not jam in the depressed position. When released, the
switch trigger must return automatically to the OFF position, and the lock-off
button must return to its original position.
Checking the chain brake
NOTE:
• If the chain saw fails to start, the chain brake must be released. Pull the
hand guard backwards firmly until you feel it engage.
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.
First press the lock-off button, then the switch trigger. The saw chain starts
immediately.
006911
Press the hand guard forwards using the back of your hand. The saw chain
must come to an immediate standstill.
1
CAUTION:
• Should the saw chain not stop immediately when this test is performed,
the saw may not be used under any circumstances. Consult a MAKITA
specialist repair shop.
Checking the run-down brake
Switch on the chain saw.
Release the switch trigger completely. The saw chain must come to a standstill
within one second.
CAUTION:
• Should the saw chain not come to a stop within one second when this
test is performed, the saw must not be used. Consult a MAKITA
specialist repair shop.
Checking the chain oiler
Before starting work, check the oil level in the tank, and the oil delivery.
006912
The oil level can be seen in the sight glass shown in the figure.
Check the oil delivery as follows:
Start the chain saw.
With the saw running, hold the saw chain approximately 15 cm above a tree
trunk or the ground. If lubrication is adequate, the oil spray will produce a light
oil trace. Observe the wind direction, and do not expose yourself to the oil
spray unnecessarily.
CAUTION:
• If an oil trace is not formed, do not use the saw. The lifespan of the chain
will otherwise be reduced. Check the oil level. Clean the oil feed groove
and the oil feed hole in the bar (refer to “MAINTENANCE “).
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Page 14
1. Serrated rail
WORKING WITH THE CHAIN SAW
006913
Bucking
For bucking cuts, rest the serrated rail shown in the figure on the wood to be
cut.
With the saw chain running, saw into the wood, using the rear handle to raise
the saw and the front one to guide it. Use the serrated rail as a pivot.
Continue the cut by applying slight pressure to the front handle, easing the
saw back slightly. Move the serrated rail further down the timber and raise the
1
A
B
B
A
front handle again.
When making several cuts, switch the chain saw off between cuts.
006914
CAUTION:
• If the upper edge of the bar is used for cutting, the chain saw may be
deflected in your direction if the chain becomes trapped. For this reason,
cut with the lower edge, so that the saw will be deflected away from your
body.
006915
Cut wood under tension on the pressure side (A )first. Then make the final cut
on the tension side (B ). This prevents the bar from becoming trapped.
Limbing
CAUTION:
• Limbing may only be performed by trained persons. A hazard is
presented by the risk of kick-back.
When limbing, support the chain saw on the trunk if possible. Do not cut with
the tip of the bar, as this presents a risk of kickback.
Pay particular attention to branches under tension. Do not cut unsupported
branches from below.
Do not stand on the felled trunk when limbing.
Burrowing and parallel-to-grain cuts
006916
CAUTION:
• Burrowing and parallel-to-grain cuts may only be carried out by persons
with special training. The possibility of kickback presents a risk of injury.
Perform parallel-to-grain cuts at as shallow an angle as possible. Carry out the
cut as carefully as possible, as the serrated rail cannot be used.
Felling
14
CAUTION:
• Felling work may only be performed by trained persons. The work is
hazardous.
Page 15
2 1/2
1. Felling area
Observe local regulations if you wish to fell a tree.
006917
o
45
- Before starting felling work, ensure that:
(1) Only persons involved in the felling operation are in the vicinity;
(2) Any person involved has an unhindered path of retreat through a
range of approximately 45 ° either side of the felling axis. Consider
o
45
1
the additional risk of tripping over electrical cables;
(3) The base of the trunk is free of foreign objects, roots and ranches;
(4) No persons or objects are present over a distance of 2 1/2 tree
lengths in the direction in which the tree will fall.
- Consider the following with respect to each tree:
• Direction of lean;
• Loose or dry branches;
• Height of the tree;
• Natural overhang;
• Whether or not the tree is rotten.
- Consider the wind speed and direction. Do not carry out felling work if
the wind is gusting strongly.
006918
- Trimming of root swellings: Begin with the largest swellings. Make the
vertical cut first, then the horizontal cut.
- Cut a scarf: The scarf determines the direction in which the tree will fall,
and guides it. It is made on the side towards which the tree is to fall. Cut
the scarf as close to the ground as possible. First make the horizontal cut
to a depth of 1/5 -1/3 of the trunk diameter. Do not make the scarf too
large. Then make the diagonal cut.
MAINTENANCE
006923
- Cut any corrections to the scarf across its entire width.
- Make the back cut a little higher than the base cut of the scarf. The back
cut must be exactly horizontal. Leave approximately 1/10 of the trunk
diameter between the back cut and the scarf.
The wood fibers in the uncut trunk portion act as a hinge. Do not cut right
through the fibers under any circumstances, as the tree will otherwise fall
unchecked. Insert wedges into the scarf in time.
- Only plastic or aluminum wedges may be used to keep the scarf open.
The use of iron wedges is prohibited.
- Stand to the side of the falling tree. Keep an area clear to the rear of the
falling tree up to an angle of 45 ° either side of the tree axis (refer to the “
felling area “ figure). Pay attention to falling branches.
CAUTION:
• Always be sure that the tool is switched off and unplugged before
attempting to perform inspection or maintenance.
• Always wear gloves when performing any inspection or maintenance.
Carry out the maintenance work described below at regular intervals. Warranty claims will be accepted only if these operations have been performed
regularly and properly.
Only maintenance work described in this instruction manual may be performed
by the user. Any other work must be carried out by a MAKITA specialist repair
shop.
15
Page 16
a
min.
3 mm
0.5 mm
Cleaning the chain saw
Clean the saw regularly with a clean rag. The handles, in particular, must be
kept free of oil.
Checking the plastic housing
Carry out regular visual inspections of all parts of the housing. Should any
parts be damaged, have them repaired immediately and properly in a MAKITA
specialist repair shop.
Sharpening the saw chain
006924
006925
0.5 mm
a
a
CAUTION:
• Always withdraw the mains plug and wear safety gloves when performing
work on the saw chain.
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.
Sharpening criteria:
- All cutters must be of equal length (dimension a). Cutters of differing
length prevent the chain from running smoothly, and may cause the chain
to break.
- Do not sharpen the chain once a minimum cutter length of 3 mm has
been reached. A new chain must then be fitted.
- 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 a distance of 0.5 mm between cutting edge and depth
gauge.
WAR NI NG:
• An excessive distance increases the risk of kick-back.
16
006926
- The sharpening angle of 30 ° distance must be the same on all cutters.
Differences in angle cause the chain to run roughly and unevenly,
accelerate wear, and lead to chain breaks.
- The side plate angle of the cutter of 80 ° is determined by the depth of
penetration of the round file. If the specified file is used properly, the
80
80
correct side plate angle is produced automatically.
Page 17
File and file guiding
006927
- Use a special round file (optional accessory) for saw chains, with a
diameter of 4.5 mm, to sharpen the chain. Normal round files are not
suitable.
- 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.
006928
- The file can be guided more easily if a file holder (optional 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).
30
006929
- After sharpening the chain, check the height of the depth gauge using
the chain gauge tool (optional accessory).
- Remove any projecting material, however small, with a special flat file
(optional accessory).
- Round off the front of the depth gauge again.
Cleaning the guide bar and lubricating the return sprocket
006930
006931
1
CAUTION:
• Always wear safety gloves for this task. Burrs present a risk of injury.
Check the running surfaces of the bar regularly for damage. Clean using a
suitable tool, and remove burrs if necessary.
If the chain saw receives frequent use, lubricate the return sprocket bearing at
least once a week. Before adding new fresh grease, carefully clean the 2 mm
hole on the tip of the guide bar, then force a small quantity of multi-purpose
grease (optional accessory) into the hole.
Cleaning the oil guide
- Clean the oil guide groove and the oil feed hole in the bar at regular
intervals.
1. Oil guide groove
2. Oil feed hole
2
17
Page 18
1
1. Push nut
2. Slotted bit screwdriver
1
1. Filter
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.
Unplug the tool from the mains.
Remove the sprocket cover and saw chain from the tool. (Refer to the section
titled “ Installing or removing saw chain “.)
007057
Remove the push nut using a slotted bit screwdriver with a slender shaft or the
like.
2
007058
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.
Plug in the tool.
007059
Pull the switch trigger to flow built-up dust or particles off the oil discharge hole
by discharging chain oil.
Unplug the tool from the mains.
1. Filter
18
007060
Insert the cleaned oil filter into the oil discharge hole. When the filter is too
1
dirty, replace it with a new one.
Page 19
1. Push nut
1. Sprocket
Insert the push nut with its correct side facing up as shown in the figure into
007061
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.
1
New saw chains
Use two or three saw chains alternately, so that the saw chain, sprocket and
running surfaces of the bar wear evenly.
Turn the bar over when changing the chain so that the bar groove wears
evenly.
006932
1
CAUTION:
• Only use chains and bars which are approved for this model of saw (refer
to “ SPECIFICATIONS “).
Before fitting a new saw chain, check the condition of the sprocket.
CAUTION:
• A worn sprocket will damage a new saw chain. Have the sprocket
replaced in this case.
Always fit a new locking ring when replacing the sprocket.
Maintaining the chain and run-down brakes
The braking systems are very important safety features. Like any other component of the chain saw, they are subject to a certain degree of wear. They must
be inspected regularly by a MAKITA specialist repair shop. This measure is for
your own safety.
Storing tool
Biologically degradable saw chain oil can only be kept for a limited period.
Beyond two years after manufacture, biological oils begin to acquire an adhesive quality, and cause damage to the oil pump and components in the lubricating system.
- Before taking the chain saw out of service for a longer period, empty the
oil tank and fill it with a small quantity of engine oil (SAE 30).
- Run the chain saw briefly to flush all residue of the biological oil out of the
tank, lubricating system and saw mechanism.
When the chain saw is taken out of service, small quantities of chain oil
will leak from it for some time afterwards. This is normal, and is not a
sign of a fault.
Store the chain saw on a suitable surface.
Before returning the chain saw to service, fill up with fresh BIOTOP saw chain
oil.
To maintain product SAFETY and RELIABILITY, repairs, any other mainte-
nance or adjustment should be performed by Makita Authorized Service Centers, always using Makita replacement parts.
19
Page 20
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.
• Saw chain
• Scabbard
• Guide bar complete
• Chain gauge
• Round file 4.5 mm
• Flat file
• File holder with 4.5 mm file
• File handle
• 1 I BIOTOP chainsaw oil
• 5 I BIOTOP chainsaw oil
• Multi-purpose grease
• Grease gun
20
Page 21
Memo
21
Page 22
Memo
22
Page 23
Memo
23
Page 24
884647A222
Makita Corporation Anjo, Aichi, Japan
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