Husqvarna Chainsaw 1153183 26 User Manual

Operators manual  
3120XP  
English  
Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.  
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CONTENTS  
Contents  
KEY TO SYMBOLS  
Symbols on the machine: .....................................  
Symbols in the operator’s manual: .......................  
CONTENTS  
Contents ...............................................................  
INTRODUCTION  
Dear Customer, ....................................................  
WHAT IS WHAT?  
What is what on the chain saw? ...........................  
GENERAL SAFETY PRECAUTIONS  
5
Before using a new chain saw ..............................  
Important ..............................................................  
Always use common sense ..................................  
Personal protective equipment .............................  
Machines safety equipment .................................  
Cutting equipment ................................................ 10  
ASSEMBLY  
Fitting the bar and chain ....................................... 16  
FUEL HANDLING  
Fuel ...................................................................... 17  
Fuelling ................................................................. 18  
Fuel safety ............................................................ 18  
STARTING AND STOPPING  
Starting and stopping ........................................... 20  
WORKING TECHNIQUES  
Before use: ........................................................... 22  
General working instructions ................................ 22  
How to avoid kickback .......................................... 28  
MAINTENANCE  
Carburettor ........................................................... 29  
Checking, maintaining and servicing chain saw  
safety equipment .................................................. 30  
Muffler .................................................................. 32  
Starter .................................................................. 32  
Air filter ................................................................. 34  
Spark plug ............................................................ 34  
Lubricating the bar tip sprocket ............................ 34  
Needle bearing lubrication ................................... 35  
Adjustment of the oil pump ................................... 35  
Cooling system ..................................................... 35  
Maintenance schedule ......................................... 36  
TECHNICAL DATA  
Technical data ...................................................... 37  
Bar and chain combinations ................................. 38  
Saw chain filing and file gauges ........................... 38  
EC-declaration of conformity ................................ 39  
English 3  
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INTRODUCTION  
Dear Customer,  
Congratulations on your choice to buy a Husqvarna product! Husqvarna is based on a tradition that dates back to 1689,  
when the Swedish King Karl XI ordered the construction of a factory on the banks of the Husqvarna River, for production  
of muskets. The location was logical, since water power was harnessed from the Huskvarna River to create the water-  
powered plant.During the more than 300 years of beeing, the Husqvarna factory has produced a lot of different products,  
from wood stoves to modern kitchen appliances, sewing machines, bicycles, motorcycles etc. In 1956, the first motor  
driven lawn mowers appeared, followed by chain saws in 1959, and it is within this area Husqvarna is working today.  
Today Husqvarna is one of the leading manufacturers in the world of forest and garden products, with quality as our  
highest priority. The business concept is to develop, manufacture and market motor driven products for forestry and  
gardening as well as for building and construction industry. Husqvarnas aim is also to be in the front edge according to  
ergonomics, usability, security and environmental protection.That is the reason why we have developed many different  
features to provide our products within these areas.  
We are convinced that you will appreciate with great satisfaction the quality and performance of our product for a very  
long time to come. The purchase of one of our products gives you access to professional help with repairs and service  
whenever this may be necessary. If the retailer who sells your machine is not one of our authorised dealers, ask for the  
address of your nearest service workshop.  
It is our wish that you will be satisfied with your product and that it will be your companion for a long time. Think of this  
operators manual as a valuable document. By following itscontent (using, service, maintenance etc) the life span and  
the second-hand value of the machine can be extended. If you will sell this machine, make sure that the buyer will get  
the operators manual.  
Thank you for using a Husqvarna product.  
Husqvarna AB has a policy of continuous product development and therefore reserves the right to modify the design and  
appearance of products without prior notice.  
4 – English  
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WHAT IS WHAT?  
What is what on the chain saw?  
1
2
3
4
5
6
7
8
9
Cylinder cover  
Front handle  
Front hand guard  
Starter  
Chain oil tank  
Starter handle  
Adjuster screws carburettor  
Choke control  
Rear handle  
17 Chain catcher (Catches chain if it jumps or breaks.)  
18 Clutch cover with built-in chain brake.  
19 Right hand guard (Protects right hand if chain breaks  
or jumps.)  
20 Throttle control  
21 Throttle lockout (Prevents accidental operation of  
throttle control.)  
22 Decompression valve  
23 Combination spanner  
24 Chain tensioning screw  
25 Operators manual  
26 Bar guard  
27 Air filter cover  
28 Lever for extra chain oil.  
29 Half throttle lock button.  
30 Product and serial number plate  
31 Information and warning decal  
10 Stop switch (Ignition on/off switch.)  
11 Fuel tank  
12 Muffler  
13 Bar tip sprocket  
14 Chain  
15 Bar  
16 Spike bumper  
English – 5  
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GENERAL SAFETY PRECAUTIONS  
Before using a new chain saw  
Important  
Please read this manual carefully.  
IMPORTANT!  
Check that the cutting equipment is correctly fitted  
and adjusted. See instructions under the heading  
Assembly.  
This chain saw for forest service is designed for forest  
work such as felling, delimbing and cutting.  
You should only use the saw with the bar and chain  
combinations we recommend in the chapter Technical  
data.  
Never use the machine if you are fatigued, while under  
the influence of alcohol or drugs, medication or anything  
that could affect your vision, alertness, coordination or  
judgement.  
Refuel and start the chain saw. See the instructions  
under the headings Fuel Handling and Starting and  
Stopping.  
Do not use the chain saw until sufficient chain oil has  
reached the chain. See instructions under the  
heading Lubricating cutting equipment.  
Long-term exposure to noise can result in permanent  
hearing impairment. So always use approved hearing  
protection.  
Wear personal protective equipment. See instructions  
under the heading ”Personal protective equipment”.  
Do not modify this product or use it if it appears to have  
been modified by others.  
Never use a machine that is faulty.Carry out the checks,  
maintenance and service instructions described in this  
manual. Some maintenance and service measures  
must be carried out by trained and qualified specialists.  
See instructions under the heading Maintenance.  
WARNING! Under no circumstances may  
the design of the machine be modified  
!
without the permission of the  
manufacturer. Always use genuine  
accessories. Non-authorized  
modifications and/or accessories can  
result in serious personal injury or the  
death of the operator or others.  
Never use any accessories other than those  
recommended in this manual. See instructions under  
the headings Cutting equipment and Technical data.  
CAUTION! Always wear protective glasses or a face  
visor to reduce the risk of injury from thrown objects. A  
chain saw is capable of throwing objects, such as wood  
chips, small pieces of wood, etc, at great force.This can  
result in serious injury, especially to the eyes.  
WARNING! A chain saw is a dangerous  
tool if used carelessly or incorrectly and  
!
can cause serious, even fatal injuries. It  
is very important that you read and  
understand the contents of this  
operator’s manual.  
WARNING! Running an engine in a  
confined or badly ventilated area can  
WARNING! The inside of the muffler  
!
result in death due to asphyxiation or  
carbon monoxide poisoning.  
contain chemicals that may be  
!
carcinogenic. Avoid contact with these  
elements in the event of a damaged  
muffler.  
WARNING! Faulty cutting equipment or  
the wrong combination of bar and saw  
!
chain increases the risk of kickback!  
Only use the bar/saw chain combinations  
we recommend, and follow the filing  
instructions. See instructions under the  
heading Technical data.  
WARNING! Long term inhalation of the  
engine’s exhaust fumes, chain oil mist  
!
and dust from sawdust can represent a  
health risk.  
WARNING! This machine produces an  
Always use common sense  
electromagnetic field during operation.  
!
It is not possible to cover every conceivable situation you  
can face when using a chain saw. Always exercise care  
and use your common sense. Avoid all situations which  
you consider to be beyond your capability. If you still feel  
uncertain about operating procedures after reading these  
instructions, you should consult an expert before  
This field may under some  
circumstances interfere with active or  
passive medical implants.To reduce the  
risk of serious or fatal injury, we  
recommend persons with medical  
implants to consult their physician and  
the medical implant manufacturer before  
operating this machine.  
continuing. Do not hesitate to contact your dealer or us if  
you have any questions about the use of the chain saw.  
We will willingly be of service and provide you with advice  
as well as help you to use your chain saw both efficiently  
and safely. Attend a training course in chain saw usage if  
possible.Your dealer, forestry school or your library can  
6 – English  
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GENERAL SAFETY PRECAUTIONS  
provide information about which training materials and  
carried out correctly and if service and/or repairs are not  
carried out professionally. If you need further information  
please contact your nearest service workshop.  
courses are available.  
WARNING! Never use a machine with  
defective safety components. Safety  
!
equipment must be inspected and  
maintained. See instructions under the  
heading Checking, maintaining and  
servicing chain saw safety equipment. If  
your machine does not pass all the  
checks, take the saw to a servicing  
dealer for repair.  
Work is constantly in progress to improve the design and  
technology - improvements that increase your safety and  
efficiency. Visit your dealer regularly to see whether you  
can benefit from new features that have been introduced.  
Chain brake and front hand guard  
Your chain saw is equipped with a chain brake that is  
designed to stop the chain if you get a kickback.The chain  
brake reduces the risk of accidents, but only you can  
prevent them.  
Personal protective equipment  
WARNING! Most chain saw accidents  
happen when the chain touches the  
!
operator.You must use approved  
personal protective equipment whenever  
you use the machine. Personal protective  
equipment cannot eliminate the risk of  
injury but it will reduce the degree of  
injury if an accident does happen. Ask  
your dealer for help in choosing the right  
equipment.  
Take care when using your saw and make sure the  
kickback zone of the bar never touches any object.  
Always wear:  
Approved protective helmet  
Hearing protection  
Protective goggles or a visor  
Gloves with saw protection  
Trousers with saw protection  
Boots with saw protection, steel toe-cap and non-slip  
sole  
The chain brake (A) can either be activated manually  
(by your left hand) or automatically by the inertia  
release mechanism.  
The brake is applied when the front hand guard (B) is  
pushed forwards.  
Always have a first aid kit nearby.  
Fire Extinguisher and Shovel  
Generally clothes should be close-fitting without  
restricting your freedom of movement.  
IMPORTANT! Sparks can come from the muffler, the bar  
and chain or other sources. Always have fire  
extinguishing tools available if you should need them.  
Help prevent forest fires.  
This movement activates a spring-loaded mechanism  
that tightens the brake band (C) around the engine  
drive system (D) (clutch drum).  
Machine s safety equipment  
In this section the machine’s safety features and their  
function are explained. For inspection and maintenance  
see instructions under the heading Checking, maintaining  
and servicing chain saw safety equipment. See  
instructions under the heading, What is what?, to find  
where these parts are located on your machine.  
The life span of the machine can be reduced and the risk  
of accidents can increase if machine maintenance is not  
English 7  
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GENERAL SAFETY PRECAUTIONS  
The front hand guard is not designed solely to activate  
of the chain saw in relation to the object that the  
the chain brake. Another important feature is that it  
reduces the risk of your left hand hitting the chain if  
you lose grip of the front handle.  
kickback zone of the bar strikes.  
If you get a violent kickback while the kickback zone of  
the bar is farthest away from you the chain brake is  
designed to be activated by the inertia in the kickback  
direction.  
The chain brake must be engaged when the chain  
saw is started to prevent the saw chain from rotating.  
If the kickback is less violent or the kickback zone of  
the bar is closer to you the chain brake will be  
activated manually by the movement of your left hand.  
Use the chain brake as a ”parking brake” when  
starting and when moving over short distances, to  
reduce the risk of moving chain accidentally hitting  
your leg or anyone or anything close by.  
In the felling position the left hand is in a position that  
makes manual activation of the chain brake  
impossible. With this type of grip, that is when the left  
hand is placed so that it cannot affect the movement  
of the front hand guard, the chain brake can only be  
activated by the inertia action.  
To release the chain brake pull the front hand guard  
backwards, towards the front handle.  
Will my hand always activate the chain  
brake during a kickback?  
No. It takes a certain force to move the hand guard  
forward. If your hand only lightly touches the front guard  
or slips over it, the force may not be enough to trigger the  
chain brake.You should also maintain a firm grip of the  
chain saw handles while working. If you do and  
experience a kickback, your hand may never leave the  
front handle and will not activate the chain brake, or the  
chain brake will only activate after the saw has swung  
around a considerable distance. In such instances, the  
chain brake might not have enough time to stop the saw  
chain before it touches you.  
Kickback can be very sudden and violent. Most  
kickbacks are minor and do not always activate the  
chain brake. If this happens you should hold the chain  
saw firmly and not let go.  
There are also certain positions in which your hand  
cannot reach the front hand guard to activate the chain  
brake; for example, when the saw chain is held in felling  
position.  
The way the chain brake is activated, either manually  
or automatically by the inertia release mechanism,  
depends on the force of the kickback and the position  
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GENERAL SAFETY PRECAUTIONS  
Will my inertia activated chain brake  
Right hand guard  
Apart from protecting your hand if the chain jumps or  
snaps, the right hand guard stops branches and twigs  
from interfering with your grip on the rear handle.  
always activate during kickback in the  
event of a kickback?  
No. First your brake must be in working order.Testing the  
brake is simple, see instructions under the heading  
Checking, maintaining and servicing chain saw safety  
equipment.We recommend you do before you begin each  
work session. Second the kickback must be strong  
enough to activate the chain brake. If the chain brake is  
too sensitive it would activate all the time which would be  
a nuisance.  
Will my chain brake always protect me  
from injury in the event of a kickback?  
Vibration damping system  
Your machine is equipped with a vibration damping  
system that is designed to minimize vibration and make  
operation easier.  
No. First, the chain brake must be in working order to  
provide the intended protection. Second, it must be  
activated during the kickback as described above to stop  
the saw chain.Third, the chain brake may be activated but  
if the bar is too close to you the brake might not have  
enough time to slow down and stop the chain before the  
chain saw hits you.  
Only you and proper working technique can eliminate  
kickback and its danger.  
The machines vibration damping system reduces the  
transfer of vibration between the engine unit/cutting  
equipment and the machines handle unit.The body of the  
chain saw, including the cutting equipment, is insulated  
from the handles by vibration damping units.  
Throttle lockout  
The throttle lockout is designed to prevent accidental  
operation of the throttle control. When you press the lock  
(A) (i.e.when you grasp the handle) it releases the throttle  
control (B). When you release the handle the throttle  
control and the throttle lockout both move back to their  
original positions. This arrangement means that the  
throttle control is automatically locked at the idle setting.  
Cutting hardwoods (most broadleaf trees) creates more  
vibration than cutting softwoods (most conifers). Cutting  
with cutting equipment that is blunt or faulty (wrong type  
or badly sharpened) will increase the vibration level.  
Chain catcher  
The chain catcher is designed to catch the chain if it  
snaps or jumps off.This should not happen if the chain is  
properly tensioned (see instructions under the heading  
Assembly) and if the bar and chain are properly serviced  
and maintained (see instructions under the heading  
General working instructions).  
WARNING! Overexposure to vibration  
can lead to circulatory damage or nerve  
!
damage in people who have impaired  
circulation. Contact your doctor if you  
experience symptoms of overexposure  
to vibration. Such symptoms include  
numbness, loss of feeling, tingling,  
pricking, pain, loss of strength, changes  
in skin colour or condition.These  
symptoms normally appear in the  
fingers, hands or wrists.These  
symptoms may be increased in cold  
temperatures.  
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GENERAL SAFETY PRECAUTIONS  
Stop switch  
General rules  
Use the stop switch to switch off the engine.  
Only use cutting equipment recommended by us!  
See instructions under the heading Technical data.  
Keep the chain’s cutting teeth properly  
sharpened! Follow our instructions and use the  
recommended file gauge. A damaged or badly  
sharpened chain increases the risk of accidents.  
Muffler  
The muffler is designed to keep noise levels to a minimum  
and to direct exhaust fumes away from the user.  
WARNING! The exhaust fumes from the  
engine are hot and may contain sparks  
Maintain the correct depth gauge setting! Follow  
our instructions and use the recommended depth  
gauge clearance. Too large a clearance increases  
the risk of kickback.  
!
which can start a fire. Never start the  
machine indoors or near combustible  
material!  
In areas with a hot, dry climate there is a high risk of fires.  
These areas are sometimes subject to government rules  
requiring among other things the muffler must be  
equipped with an approved type of spark arrestor mesh.  
Keep the chain properly tensioned! If the chain is  
slack it is more likely to jump off and lead to increased  
wear on the bar, chain and drive sprocket.  
Keep cutting equipment well lubricated and  
properly maintained! A poorly lubricated chain is  
more likely to break and lead to increased wear on the  
bar, chain and drive sprocket.  
CAUTION! The muffler gets very hot during and after  
use.This also applies during idling. Be aware of the fire  
hazard, especially when working near flammable  
substances and/or vapours.  
WARNING! Never use a saw without a  
muffler, or with a damaged muffler. A  
!
damaged muffler may substantially  
increase the noise level and the fire hazard.  
Keep fire fighting equipment handy. If a  
spark arrestor screen is required in your  
area, never use the saw without or with a  
broken spark arrestor screen.  
Cutting equipment designed to reduce  
kickback  
WARNING! Faulty cutting equipment or  
the wrong combination of bar and saw  
!
chain increases the risk of kickback!  
Only use the bar/saw chain combinations  
we recommend, and follow the filing  
instructions. See instructions under the  
heading Technical data.  
Cutting equipment  
This section describes how to choose and maintain your  
cutting equipment in order to:  
Reduce the risk of kickback.  
Reduce the risk of the saw chain breaking or jumping  
The only way to avoid kickback is to make sure that the  
kickback zone of the bar never touches anything.  
By using cutting equipment with ”built-in” kickback  
reduction and keeping the chain sharp and well-  
maintained you can reduce the effects of kickback.  
off the bar.  
Obtain optimal cutting performance.  
Extend the life of cutting equipment.  
Avoid increasing vibration levels.  
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GENERAL SAFETY PRECAUTIONS  
Bar  
Chain oil hole and hole for chain tensioner. The bar  
must be matched to the chain saw design.  
The smaller the tip radius the lower the chance of  
kickback.  
Chain  
A chain is made up of a number of links, which are  
available in standard and low-kickback versions.  
Chain  
Chain pitch (inches)  
IMPORTANT! No saw chain design eliminates the  
danger of kickback.  
Drive link width (mm/inches)  
Number of drive links.  
WARNING! Any contact with a rotating  
saw chain can cause extremely serious  
!
injuries.  
Some terms that describe the bar and chain  
To maintain the safety features of the cutting equipment,  
you should replace a worn or damaged bar or chain with  
a bar and chain combinations recommended by  
Husqvarna. See instructions under the heading Technical  
Data for a list of replacement bar and chain combinations  
we recommend.  
Sharpening your chain and adjusting  
depth gauge setting  
General information on sharpening cutting teeth  
Bar  
Length (inches/cm)  
Never use a blunt chain. When the chain is blunt you  
have to exert more pressure to force the bar through  
the wood and the chips will be very small. If the chain  
is very blunt it will produce wood powder and no chips  
or shavings.  
Number of teeth on bar tip sprocket (T).  
A sharp chain eats its way through the wood and  
produces long, thick chips or shavings.  
Chain pitch (inches). The spacing between the drive  
links of the chain must match the spacing of the teeth  
on the bar tip sprocket and drive sprocket.  
The cutting part of the chain is called the cutter and  
consists of a cutting tooth (A) and the depth gauge  
(B). The cutters cutting depth is determined by the  
difference in height between the two (depth gauge  
setting).  
Number of drive links. The number of drive links is  
determined by the length of the bar, the chain pitch  
and the number of teeth on the bar tip sprocket.  
Bar groove width (inches/mm). The groove in the bar  
must match the width of the chain drive links.  
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GENERAL SAFETY PRECAUTIONS  
When you sharpen a cutting tooth there are four important  
Check that the chain is correctly tensioned. A slack  
factors to remember.  
chain will move sideways, making it more difficult to  
sharpen correctly.  
1
2
Filing angle  
Always file cutting teeth from the inside face. Reduce  
the pressure on the return stroke. File all the teeth on  
one side first, then turn the chain saw over and file the  
teeth on the other side.  
Cutting angle  
3
4
File position  
File all the teeth to the same length. When the length  
of the cutting teeth is reduced to 4 mm (5/32") the  
chain is worn out and should be replaced.  
Round file diameter  
min 4 mm  
(5/32")  
It is very difficult to sharpen a chain correctly without the  
right equipment. We recommend that you use our file  
gauge. This will help you obtain the maximum kickback  
reduction and cutting performance from your chain.  
General advice on adjusting depth gauge setting  
When you sharpen the cutting tooth (A) the depth  
gauge setting (C) will decrease. To maintain optimal  
cutting performance the depth gauge (B) has to be  
filed down to achieve the recommended depth gauge  
setting. See instructions under the heading Technical  
data to find the correct depth gauge setting for your  
particular chain.  
See instructions under the heading Technical data for  
information about sharpening your chain.  
WARNING! Departure from the  
sharpening instructions considerably  
!
increases the risk of kickback.  
Sharpening cutting teeth  
WARNING! The risk of kickback is  
increased if the depth gauge setting is  
!
too large!  
To sharpen cutting teeth you will need a round file and a  
file gauge. See instructions under the heading Technical  
data for information on the size of file and gauge that are  
recommended for the chain fitted to your chain saw.  
Adjustment of depth gauge setting  
The cutting teeth should be newly sharpened before  
adjusting the depth gauge setting. We recommend  
that you adjust the depth gauge setting every third  
time you sharpen the cutting teeth. NOTE! This  
recommendation assumes that the length of the  
cutting teeth is not reduced excessively.  
You will need a flat file and a depth gauge tool. We  
recommend that you use our depth gauge tool to  
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GENERAL SAFETY PRECAUTIONS  
acheive the correct depth gauge setting and bevel for  
Use the combination spanner to tighten the bar nuts  
the depth gauge.  
while lifting the tip of the bar at the same time. Check  
that you can pull the chain round freely by hand and  
that it does not sag from the underside of the bar.  
The position of the chain tensioning screw on our chain  
saws varies from model to model. See instructions under  
the heading What is what? to find out where it is on your  
model.  
Place the depth gauge tool over the chain. Detailed  
information regarding the use of the depth gauge tool,  
will be found on the package for the depth gauge tool.  
Use the flat file to file off the tip of the depth gauge that  
protrudes through the depth gauge tool.The depth  
gauge setting is correct when you no longer feel resis-  
tance as you draw the file along the depth gauge tool.  
Lubricating cutting equipment  
WARNING! Poor lubrication of cutting  
equipment may cause the chain to snap,  
!
which could lead to serious, even fatal  
injuries.  
Chain oil  
Tensioning the chain  
Chain oil must demonstrate good adhesion to the chain  
and also maintain its flow characteristics regardless of  
whether it is warm summer or cold winter weather.  
As a chain saw manufacturer we have developed an  
optimal chain oil which, with its vegetable oil base, is also  
biodegradable. We recommend the use of our own oil for  
both maximum chain life and to minimise environmental  
damage. If our own chain oil is not available, standard  
chain oil is recommended.  
WARNING! A slack chain may jump off  
and cause serious or even fatal injury.  
!
The more you use a chain the longer it becomes. It is  
therefore important to adjust the chain regularly to take up  
the slack.  
Never use waste oil! Using waste oil can be dangerous  
to you and damage the machine and environment.  
Check the chain tension every time you refuel. NOTE! A  
new chain has a running-in period during which you  
should check the tension more frequently.  
Tension the chain as tightly as possible, but not so tight  
that you cannot pull it round freely by hand.  
IMPORTANT! When using vegetable based saw chain  
oil, dismantle and clean the groove in the bar and saw  
chain before long-term storage.Otherwise there is a risk  
of the saw chain oil oxidizing, which will result in the saw  
chain becoming stiff and the bar tip sprocket jamming.  
Filling with chain oil  
All our chain saws have an automatic chain lubrication  
system. On some models the oil flow is also  
adjustable.  
Undo the bar nuts that hold the clutch cover/chain  
brake. Use the combination spanner.Then tighten the  
bar nuts by hand as tight as you can.  
The saw chain oil tank and the fuel tank are designed  
so that the fuel runs out before the saw chain oil.  
Raise the tip of the bar and stretch the chain by  
tightening the chain tensioning screw using the  
combination spanner. Tighten the chain until it does  
not sag from the underside of the bar.  
However, this safety feature requires that you use the  
right sort of chain oil (if the oil is too thin it will run out  
before the fuel), and that you adjust the carburetor as  
recommended (a lean mixture may mean that the fuel  
lasts longer than the oil) and that you also use the  
recommended cutting equipment (a bar that is too  
long will use more chain oil).  
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GENERAL SAFETY PRECAUTIONS  
Checking chain lubrication  
Chain drive sprocket  
Check the chain lubrication each time you refuel. See  
instructions under the heading Lubricating the bar tip  
sprocket.  
Aim the tip of the bar at a light coloured surface about  
20 cm (8 inches) away. After 1 minute running at 3/4  
throttle you should see a distinct line of oil on the light  
surface.  
The clutch drum is fitted with one of the following drive  
sprockets:  
A
Spur sprocket (the chain sprocket is welded on the  
drum)  
B
Rim sprocket (replaceable)  
Regularly check the degree of wear on the drive sprocket.  
Replace if wear is excessive. Replace the drive sprocket  
whenever you replace the chain.  
If the chain lubrication is not working:  
Needle bearing lubrication  
Check that the oil channel in the bar is not obstructed.  
Clean if necessary.  
Both versions of sprockets have a needle bearing on the  
drive shaft, which has to be greased regularly (once a  
week). CAUTION! Use a high-quality bearing grease or  
engine oil.  
Check that the groove in the edge of the bar is clean.  
Clean if necessary.  
Checking wear on cutting equipment  
Check that the bar tip sprocket turns freely and that  
the lubricating hole in the tip sprocket is not blocked.  
Clean and lubricate if necessary.  
Check the chain daily for:  
Visible cracks in rivets and links.  
Whether the chain is stiff.  
Whether rivets and links are badly worn.  
If the chain lubrication system is still not working after  
carrying out the above checks and associated measures  
you should contact your service agent.  
Replace the saw chain if it exhibits any of the points  
above.  
We recommend you compare the existing chain with a  
new chain to decide how badly the existing chain is worn.  
When the length of the cutting teeth has worn down to  
only 4 mm the chain must be replaced.  
14 – English  
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GENERAL SAFETY PRECAUTIONS  
Bar  
WARNING! Most chain saw accidents  
happen when the chain touches the  
operator.  
!
Wear personal protective equipment. See  
instructions under the heading  
Check regularly:  
”Personal protective equipment”.  
Whether there are burrs on the edges of the bar.  
Remove these with a file if necessary.  
Do not tackle any job that you feel you  
are not adequately trained for. See  
instructions under the headings  
Personal protective equipment, How to  
avoid kickback, Cutting equipment and  
General working instructions.  
Whether the groove in the bar has become badly  
worn. Replace the bar if necessary.  
Avoid situations where there is a risk of  
kickback. See instructions under the  
heading Machine s safety equipment.  
Use the recommended protective  
equipment and check its condition. See  
instructions under the heading General  
working instructions.  
Whether the tip of the bar is uneven or badly worn. If  
a hollow forms on the underside of the bar tip this is  
due to running with a slack chain.  
Check that all the chain saw safety  
features are working. See instructions  
under the headings General working  
instructions and General safety  
precautions.  
To prolong the life of the bar you should turn it over  
daily.  
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ASSEMBLY  
Fit the clutch cover and locate the chain adjuster pin in the  
Fitting the bar and chain  
hole in the bar. Check that the drive links of the chain fit  
correctly over the drive sprocket and that the chain is  
correctly located in the groove in the bar. Tighten the bar  
nuts finger tight.  
WARNING! Always wear gloves, when  
working with the chain.  
!
Check that the chain brake is in disengaged position by  
moving the front hand guard towards the front handle.  
Tension the chain by turning the chain tensioning screw  
clockwise using the combination spanner. The chain  
should be tensioned until it does not sag from the  
underside of the bar.  
Remove the bar nuts and remove the clutch cover (chain  
brake). Take off the transportation ring (A).  
The chain is correctly tensioned when it does not sag from  
the underside of the bar, but can still be turned easily by  
hand. Hold up the bar tip and tighten the bar nuts with the  
combination spanner.  
Fit the bar over the bar bolts. Place the bar in its rearmost  
position. Place the chain over the drive sprocket locate it  
in the groove on the bar. Begin on the top edge of the bar.  
Make sure that the edges of the cutting links are facing  
forward on the top edge of the bar.  
When fitting a new chain, the chain tension has to be  
checked frequently until the chain is run-in. Check the  
chain tension regularly. A correctly tensioned chain  
ensures good cutting performance and long life.  
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FUEL HANDLING  
Mixing ratio  
Fuel  
1:50 (2%) with HUSQVARNA two-stroke oil.  
1:33 (3%) with oils class JASO FB or ISO EGB formulated  
for air-cooled, two-stroke engines.  
Note! The machine is equipped with a two-stroke engine  
and must always be run using a mixture of petrol and two-  
stroke oil. It is important to accurately measure the  
amount of oil to be mixed to ensure that the correct  
mixture is obtained. When mixing small amounts of fuel,  
even small inaccuracies can drastically affect the ratio of  
the mixture.  
Petrol, litre  
Two-stroke oil, litre  
2% (1:50)  
0,10  
3% (1:33)  
5
0,15  
0,30  
0,45  
0,60  
10  
15  
20  
0,20  
WARNING! Always ensure there is  
0,30  
adequate ventilation when handling fuel.  
!
0,40  
Petrol  
Mixing  
Use good quality unleaded or leaded petrol.  
CAUTION! Engines equipped with catalytic  
converters must be run on unleaded fuel  
mixtures.  
Leaded gasoline will destroy the catalytic converter  
and it will no longer serve its purpose. The green fuel  
cap on saws fitted with catalytic converters means  
that only unleaded gasoline can be used.  
The lowest recommended octane grade is 90 (RON).  
If you run the engine on a lower octane grade than 90  
so-called knocking can occur.This gives rise to a high  
engine temperature and increased bearing load,  
which can result in serious engine damage.  
Always mix the petrol and oil in a clean container  
intended for fuel.  
Always start by filling half the amount of the petrol to  
be used. Then add the entire amount of oil. Mix  
(shake) the fuel mixture. Add the remaining amount of  
petrol.  
Mix (shake) the fuel mixture thoroughly before filling  
the machine’s fuel tank.  
When working with continuous high revs (e.g.limbing)  
Do not mix more than one month’s supply of fuel at a  
time.  
a higher octane is recommended.  
Environment fuel  
If the machine is not used for some time the fuel tank  
should be emptied and cleaned.  
HUSQVARNA recommends the use of alkylate fuel,  
either Aspen two-stroke fuel or environmental fuel for  
four-stroke engines blended with two-stroke oil as set out  
below. Note that carburettor adjustment may be  
necessary when changing the type of fuel (see the  
instructions under the heading Carburettor).  
Chain oil  
We recommend the use of special oil (chain oil) with  
good adhesion characteristics.  
Running-in  
Avoid running at a too high speed for extended periods  
during the first 10 hours.  
Two-stroke oil  
For best results and performance use HUSQVARNA  
two-stroke engine oil, which is specially formulated for  
our air-cooled two-stroke engines.  
Never use waste oil. This results in damage to the oil  
pump, the bar and the chain.  
Never use two-stroke oil intended for water-cooled  
engines, sometimes referred to as outboard oil (rated  
TCW).  
It is important to use oil of the right grade (suitable  
viscosity range) to suit the air temperature.  
In temperatures below 0°C (32°F) some oils become  
too viscous.This can overload the oil pump and result  
in damage to the oil pump components.  
Never use oil intended for four-stroke engines.  
A poor oil quality and/or too high oil/fuel ratio may  
jeopardise function and decrease the life time of  
catalytic converters.  
Contact your service agent when choosing chain oil.  
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FUEL HANDLING  
Extra chain oil  
therefore always fill the chain oil tank and fuel tank at the  
same time.  
Under EXTREME conditions the chain and bar may  
require extra chain oil. The oil flow should only be  
increased when the engine is running and the chain  
rotating. Push the lever to the right, where it will  
automatically be held in the locked position. Press in the  
lever button to release it.  
ST  
ST  
OP  
OP  
WARNING! Fuel and fuel vapour are  
highly flammable.Take care when  
handling fuel and chain oil. Be aware of  
the risks of fire, explosion and those  
associated with inhalation.  
!
Note: It is not necessary to pump continuously. When the  
extra oil flow has been activated oil consumption  
increases by 40-80%, depending on the oil pump’s basic  
setting.  
Fuel safety  
Never refuel the machine while the engine is running.  
Fuelling  
Make sure there is plenty of ventilation when refuelling  
or mixing fuel (petrol and 2-stroke oil).  
Move the machine at least 3 m from the refuelling  
point before starting it.  
WARNING! Taking the following  
precautions, will lessen the risk of fire:  
!
Do not smoke and do not place any hot  
objects in the vicinity of fuel.  
Always stop the engine and let it cool for  
a few minutes before refuelling.  
When refuelling, open the fuel cap slowly  
so that any excess pressure is released  
gently.  
1
Never start the machine:  
If you have spilt fuel or chain oil on the machine.Wipe  
off the spillage and allow remaining fuel to evaporate.  
Tighten the fuel cap carefully after  
refuelling.  
2
3
If you have spilt fuel on yourself or your clothes,  
change your clothes.Wash any part of your body that  
has come in contact with fuel. Use soap and water.  
Always move the machine away from the  
refuelling area before starting.  
If the machine is leaking fuel. Check regularly for  
leaks from the fuel cap and fuel lines.  
Clean the area around the fuel cap. Clean the fuel and  
chain oil tanks regularly. The fuel filter must be replaced  
at least once a year. Contamination in the tanks causes  
malfunction. Make sure the fuel is well mixed by shaking  
the container before refuelling.The capacities of the chain  
oil tank and fuel tank are carefully matched.You should  
WARNING! Never use a machine with  
visible damage to the spark plug guard  
!
and ignition cable. A risk of sparking  
arises, which can cause a fire.  
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FUEL HANDLING  
Transport and storage  
Always store the chain saw and fuel so that there is no  
risk of leakages or fumes coming into contact with  
sparks or naked flames from electrical equipment,  
electric motors, relays/switches, boilers and the like.  
Always store fuel in an approved container designed  
for that purpose.  
For longer periods of storage or for transport of the  
chain saw, the fuel and chain oil tanks should be  
emptied.Ask where you can dispose of waste fuel and  
chain oil at your local petrol station.  
The bar guard must always be fitted to the cutting  
attachment when the machine is being transported or  
in storage, in order to prevent accident contact with  
the sharp chain. Even a non-moving chain can cause  
serious cuts to yourself or persons you bump into with  
an exposed chain.  
Secure the machine during transport.  
Long-term storage  
Empty the fuel/oil tanks in a well ventilated area.Store the  
fuel in approved cans in a safe place. Fit the bar guard.  
Clean the machine. See instructions under the heading  
Maintenance schedule.  
Ensure the machine is cleaned and that a complete  
service is carried out before long-term storage.  
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STARTING AND STOPPING  
If the machine is fitted with a decompression valve (A):  
Starting and stopping  
Press the valve to reduce the pressure in the cylinder and  
make starting easier.You should always use the  
decompression valve when starting the machine. Once  
the machine has started the valve will automatically return  
to its original setting.  
WARNING! Note the following before  
starting:  
!
Never start a chain saw unless the bar,  
chain and all covers are fitted correctly.  
Otherwise the clutch can come loose and  
cause personal injuries.  
Always move the machine away from the  
refuelling area before starting.  
Place the machine on firm ground. Make  
sure you have a secure footing and that  
the chain cannot touch anything.  
Warm engine  
Keep people and animals well away from  
the working area.  
Use the same starting procedure as for a cold engine but  
without setting the choke control in the choke position.  
Cold engine  
Starting  
Starting: The chain brake must be engaged when the  
chain saw is started. Activate the brake by moving the  
front hand guard forwards.  
Ignition: Slide the ignition switch to the left.  
Choke: Set the choke control in the choke position.  
Grip the front handle with your left hand. Hold the chain  
saw on the ground by placing your right foot through the  
rear handle. Pull the starter handle with your right hand  
and pull out the starter cord slowly until you feel a  
resistance (as the starter pawls engage) then pull firmly  
and rapidly. Never twist the starter cord around your  
hand.  
Start throttle: Press the throttle lockout (1). Open throttle  
fully (2). Press in button (3).  
CAUTION! Do not pull the starter cord all the way out and  
do not let go of the starter handle when the cord is fully  
extended. This can damage the machine.  
1
3
2
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STARTING AND STOPPING  
Push in the choke control as soon as the engine fires and  
keep pulling until the engine starts. When the engine  
starts, quickly apply full throttle; the throttle start lock will  
automatically disengage.  
As the chain brake is still engaged the speed of the  
engine must be set to idling as soon as possible, this is  
achieved by quickly disengaging the throttle lock. This  
prevents unnecessary wear to the clutch, clutch drum and  
brake band.  
Reactivate the chain brake by pushing the front hand  
guard back towards the front handle. The chain saw is  
now ready for use.  
Stopping  
Stop the engine by switching off the ignition. (Move the  
ignition switch to stop position.)  
English 21  
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WORKING TECHNIQUES  
CAUTION! Follow the instructions above, but do not use a  
Before use:  
chain saw in a situation where you cannot call for help in  
case of an accident.  
2
3
4
5
Do not use the machine in bad weather, such as  
dense fog, heavy rain, strong wind, intense cold, etc.  
Working in bad weather is tiring and often brings  
added risks, such as icy ground, unpredictable felling  
direction, etc.  
Take great care when removing small branches and  
avoid cutting bushes (i.e.cutting many small branches  
at the same time). Small branches can be grabbed by  
the chain and thrown back at you, causing serious  
injury.  
Make sure you can move and stand safely. Check the  
area around you for possible obstacles (roots, rocks,  
branches, ditches, etc.) in case you have to move  
suddenly. Take great care when working on sloping  
ground.  
Take great care when cutting a tree that is in tension.  
A tree that is in tension may spring back to its normal  
position before or after being cut. If you position  
yourself incorrectly or make the cut in the wrong place  
the tree may hit you or the machine and cause you to  
lose control. Both situations can cause serious  
personal injury.  
,
1
Check that the chain brake works correctly and is not  
damaged.  
2
3
Check that the rear right hand guard is not damaged.  
Check that the throttle lockout works correctly and is  
not damaged.  
4
Check that the stop switch works correctly and is not  
damaged.  
5
6
Check that all handles are free from oil.  
Check that the anti vibration system works and is not  
damaged.  
7
8
9
Check that the muffler is securely attached and not  
damaged.  
Check that all parts of the chain saw are tightened  
correctly and that they are not damaged or missing.  
Check that the chain catcher is in place and not  
damaged.  
6
7
Before moving your chain saw switch off the engine  
and lock the chain using the chain brake. Carry the  
chain saw with the bar and chain pointing backwards.  
Fit a guard to the bar before transporting the chain  
saw or carrying it for any distance.  
When you put the chain saw on the ground, lock the  
saw chain using the chain brake and ensure you have  
a constant view of the machine. Switch the engine off  
before leaving your chain saw for any length of time.  
10 Check the chain tension.  
General working instructions  
IMPORTANT!  
This section describes basic safety rules for using a  
chain saw. This information is never a substitute for  
professional skills and experience. If you get into a  
situation where you feel unsafe, stop and seek expert  
advice. Contact your chain saw dealer, service agent or  
an experienced chain saw user. Do not attempt any task  
that you feel unsure of!  
Before using a chain saw you must understand the  
effects of kickback and how to avoid them. See  
instructions under the heading How to avoid kickback.  
Before using a chain saw you must understand the  
difference between cutting with the top and bottom  
edges of the bar. See instructions under the headings  
How to avoid kickback and Machine’s safety equipment.  
WARNING! Sometimes chips get stuck in  
the clutch cover causing the chain to  
!
jam. Always stop the engine before  
cleaning.  
General rules  
1
If you understand what kickback is and how it happens  
then you can reduce or eliminate the element of  
surprise. By being prepared you reduce the risk.  
Kickback is usually quite mild, but it can sometimes be  
very sudden and violent.  
Always hold the chain saw firmly with your right hand  
on the rear handle and your left hand on the front  
handle. Wrap your fingers and thumbs around the  
handles.You should use this grip whether you are  
right-handed or left-handed. This grip minimises the  
Wear personal protective equipment. See instructions  
under the heading ”Personal protective equipment”.  
2
Basic safety rules  
1
Look around you:  
To ensure that people, animals or other things cannot  
affect your control of the machine.  
To make sure that none of the above might come  
within reach of your saw or be injured by falling trees.  
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WORKING TECHNIQUES  
effect of kickback and lets you keep the chain saw  
5
You must have a steady stance in order to have full  
under control. Do not let go of the handles!  
control over the chain saw. Never work standing on a  
ladder, in a tree or where you do not have firm ground  
to stand on.  
3
Most kickback accidents happen during limbing.Make  
sure you are standing firmly and that there is nothing  
in the way that might make you trip or lose your  
balance.  
6
7
Always use a fast cutting speed, i.e. full throttle.  
Take great care when you cut with the top edge of the  
bar, i.e. when cutting from the underside of the object.  
This is known as cutting on the push stroke.The chain  
tries to push the chain saw back towards the user. If  
the saw chain is jamming, the saw may be pushed  
back at you.  
Lack of concentration can lead to kickback if the  
kickback zone of the bar accidentally touches a  
branch, nearby tree or some other object.  
Have control over the workpiece. If the pieces you  
intend to cut are small and light, they can jam in the  
saw chain and be thrown towards you. Even if this  
does not need to be a danger, you may be surprised  
and lose control of the saw. Never saw stacked logs or  
branches without first separating them. Only saw one  
log or one piece at a time. Remove the cut pieces to  
keep your working area safe.  
8
Unless the user resists this pushing force there is a  
risk that the chain saw will move so far backwards that  
only the kickback zone of the bar is in contact with the  
tree, which will lead to a kickback.  
Cutting with the bottom edge of the bar, i.e. from the  
top of the object downwards, is known as cutting on  
the pull stroke. In this case the chain saw pulls itself  
towards the tree and the front edge of the chain saw  
body rests naturally on the trunk when cutting. Cutting  
on the pull stroke gives the operator better control  
over the chain saw and the position of the kickback  
zone.  
4
Never use the chain saw above shoulder height  
and try not to cut with the tip of the bar. Never use  
the chain saw one-handed!  
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WORKING TECHNIQUES  
9
Follow the instructions on sharpening and maintaining  
4
Is there a risk of kickback?  
your bar and chain. When you replace the bar and  
chain use only combinations that are recommended  
by us. See instructions under the headings Cutting  
equipment and Technical data.  
Basic cutting technique  
5
Do the conditions and surrounding terrain affect how  
safely you can stand and move about?  
WARNING! Never use a chain saw by  
holding it with one hand. A chain saw is  
not safely controlled with one hand.  
Always have a secure, firm grip around  
the handles with both hands.  
!
Two factors decide whether the chain will jam or the object  
that you are cutting will split: the first is how the object is  
supported before and after cutting, and the second is  
whether it is in tension.  
General  
In most cases you can avoid these problems by cutting in  
two stages; from the top and from the bottom.You need to  
support the object so that it will not trap the chain or split  
during cutting.  
Always use full throttle when cutting!  
Reduce the speed to idle after every cut (running the  
engine for too long at full throttle without any load, i.e.  
without any resistance from the chain during cutting,  
can lead to serious engine damage).  
IMPORTANT! If the chain jams in the cut: stop the  
engine! Don’t try to pull the chain saw free. If you do you  
may be injured by the chain when the chain saw  
suddenly breaks free.Use a lever to open up the cut and  
free the chain saw.  
Cutting from above = Cutting on the pull stroke.  
Cutting from below = Cutting on the push stroke.  
Cutting on the push stroke increases the risk of kickback.  
See instructions under the heading How to avoid  
kickback.  
The following instructions describe how to handle the  
commonest situations you are likely to encounter when  
using a chain saw.  
Terms  
Cutting = General term for cutting through wood.  
Limbing = Cutting branches off a felled tree.  
Limbing  
When limbing thick branches you should use the same  
Splitting = When the object you are cutting breaks off  
approach as for cutting.  
before the cut is complete.  
Cut difficult branches piece by piece.  
There are five important factors you should consider  
before making a cut:  
2
1
Make sure the cutting equipment will not jam in the  
cut.  
1
3
2
3
Make sure the object you are cutting will not split.  
Cutting  
WARNING! Never attempt to cut logs  
while they are in a pile or when a couple  
!
of logs are lying together. Such  
procedures drastically increase the risk  
of kickback which can result in a serious  
or fatal injury.  
Make sure the chain will not strike the ground or any  
other object during or after cutting.  
If you have a pile of logs, each log you attempt to cut  
should be removed from the pile, placed on a saw horse  
or runners and cut individually.  
Remove the cut pieces from the cutting area. By leaving  
them in the cutting area, you increase the risk for  
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WORKING TECHNIQUES  
inadvertently getting a kickback, as well as increasing the  
Start by cutting from above (about 1/3 of the way through).  
Finish by cutting from below so that the two cuts meet.  
risk of losing your balance while working.  
Tree felling technique  
The log is lying on the ground. There is little risk of the  
chain jamming or the object splitting. However there is a  
risk that the chain will touch the ground when you finish  
the cut.  
IMPORTANT! It takes a lot of experience to fell a tree.  
Inexperienced users of chain saws should not fell trees.  
Do not attempt any task that you feel unsure of!  
Safe distance  
The safe distance between a tree that is to be felled and  
anyone else working nearby is at least 2 1/2 tree lengths.  
Make sure that no-one else is in this ”risk zone” before or  
during felling.  
Cut all the way through the log from above. Avoid letting  
the chain touch the ground as you finish the cut. Maintain  
full throttle but be prepared for what might happen.  
If it is possible (can you turn the log?) stop cutting about  
2/3 of the way through the log.  
Turn the log and finish the cut from the opposite side.  
Felling direction  
The aim is to fell the tree in a position where you can limb  
and cross-cut the log as easily as possible.You want it to  
fall in a location where you can stand and move about  
safely.  
Once you have decided which way you want the tree to fall  
you must judge which way the tree would fall naturally.  
Several factors affect this:  
The log is supported at one end. There is a high risk  
Lean of the tree  
that it will split.  
Bend  
Wind direction  
Arrangement of branches  
Weight of snow  
Obstacles within the reach of the tree: for example,  
other trees, power lines, roads and buildings.  
Look for signs of damage and rot in the stem, this  
makes it more probably that the tree will break and  
start to fall before you expect it to.  
Start by cutting from below (about 1/3 of the way through).  
Finish by cutting from above so that the two cuts meet.  
You may find you are forced to let the tree fall in its natural  
direction because it is impossible or dangerous to try to  
make it fall in the direction you first intended.  
Another very important factor, which does not affect the  
felling direction but does affect your safety, is to make sure  
the tree has no damaged or dead branches that might  
break off and hit you during felling.  
The log is supported at both ends. There is a high risk  
that the chain will jam.  
The main point to avoid is letting the tree fall onto another  
tree. It is very dangerous to remove a trapped tree and  
there is high accident risk. See instructions under the  
heading Freeing a tree that has fallen badly.  
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WORKING TECHNIQUES  
Next make the bottom cut so that it finishes exactly at the  
IMPORTANT! During critical felling operations, hearing  
end of the top cut.  
protectors should be lifted immediately when sawing is  
completed so that sounds and warning signals can be  
heard.  
Clearing the trunk and preparing your retreat  
1
Delimb the stem up to shoulder height. It is safer to work  
from the top down and to have the tree between you and  
the saw.  
2
The directional cuts should run 1/4 of the diameter  
through the trunk and the angle between the top cut and  
bottom cut should be 45°.  
The line where the two cuts meet is called the directional  
cut line. This line should be perfectly horizontal and at  
right angles (90°) to the chosen felling direction.  
Remove any undergrowth from the base of the tree and  
check the area for obstacles (stones, branches, holes,  
etc.) so that you have a clear path of retreat when the tree  
starts to fall.Your path of retreat should be roughly 135  
degrees away from the intended felling direction.  
Felling cut  
The felling cut is made from the opposite side of the tree  
and it must be perfectly horizontal. Stand on the left side  
of the tree and cut on the pull stroke.  
1
3
1
Make the felling cut about 3-5 cm (1.5-2 inches) above the  
2
bottom directional cut.  
1
2
1
2
3
Danger zone  
Retreat path  
Felling direction  
Felling  
Set the spike bumper (if one is fitted) just behind the  
felling hinge. Use full throttle and advance the chain/bar  
slowly into the tree. Make sure the tree does not start to  
move in the opposite direction to your intended felling  
direction. Drive a wedge or breaking bar into the cut as  
soon as it is deep enough.  
WARNING! Unless you have special  
training we advise you not to fell trees  
with a diameter larger than the bar length  
of your saw!  
!
Felling is done using three cuts. First you make the  
directional cuts, which consist of the top cut and the  
bottom cut, then you finish with the felling cut. By placing  
these cuts correctly you can control the felling direction  
very accurately.  
Directional cuts  
To make the directional cut you begin with the top cut.Aim  
using to the saw’s felling direction mark (1) toward a goal  
further forward in the terrain, where you would like the tree  
to fall (2). Stand on the right-hand side of the tree, behind  
the saw, and cut with a pull stroke.  
Finish the felling cut parallel with the directional cut line so  
that the distance between them is at least 1/10 of the  
trunk diameter.The uncut section of the trunk is called the  
felling hinge.  
26 – English  
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WORKING TECHNIQUES  
The felling hinge controls the direction that the tree falls in.  
Freeing a tree that has fallen badly  
Freeing a ”trapped tree”  
It is very dangerous to remove a trapped tree and there is  
high accident risk.  
Never try to fell the tree that is trapped.  
Never work in the risk zone of the hanging trapped tree.  
All control over the felling direction is lost if the felling  
hinge is too narrow or non-existent, or if the directional  
cuts and felling cut are badly placed.  
The safest method is to use a winch.  
Tractor-mounted  
Portable  
When the felling cut and directional cut are complete the  
tree should start to fall by itself or with the aid of a felling  
wedge or breaking bar.  
Cutting trees and branches that are in tension  
Preparations:Work out which side is in tension and where  
the point of maximum tension is (i.e. where it would break  
if it was bent even more).  
Decide which is the safest way to release the tension and  
whether you are able to do it safely. In complicated  
situations the only safe method is to put aside your chain  
saw and use a winch.  
General advice:  
Position yourself so that you will be clear of the tree or  
branch when the tension is released.  
We recommend that you use a bar that is longer than the  
diameter of the tree, so that you can make the felling cut  
and directional cuts with single cutting strokes. See  
instructions under the heading Technical data section to  
find out which lengths of bar are recommended for your  
saw.  
Make one or more cuts at or near the point of maximum  
tension. Make as many cuts of sufficient depth as  
necessary to reduce the tension and make the tree or  
branch break at the point of maximum tension.  
There are methods for felling trees with a diameter larger  
than the bar length. However these methods involve a  
much greater risk that the kickback zone of the bar will  
come into contact with the tree.  
Never cut straight through a tree or branch that is in  
tension!  
If you must cut across tree/limb, make two to three cuts,  
one inch apart, one to two inches deep.  
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WORKING TECHNIQUES  
Continue to cut deeper until tree/limb bends and tension  
Kickback only occurs if the kickback zone of the bar  
is released.  
touches an object.  
Cut tree/limb from outside the bend, after tension has  
been released.  
Limbing  
How to avoid kickback  
WARNING! A majority of kickback  
accidents occur during limbing. Do not  
use the kickback zone of the guide bar.  
Be extremely cautious and avoid  
contacting the log, other limbs or objects  
with the nose of the guide bar. Be  
extremely cautious of limbs under  
tension.They can spring back toward  
you and cause loss of control resulting  
in injury.  
!
WARNING! Kickback can happen very  
suddenly and violently; kicking the chain  
!
saw, bar and chain back at the user. If  
this happens when the chain is moving it  
can cause very serious, even fatal  
injuries. It is vital you understand what  
causes kickback and that you can avoid  
it by taking care and using the right  
working technique.  
Make sure that you can stand and move about safely.  
Work on the left side of the trunk. Work as close as  
possible to the chain saw for maximum control.If possible,  
let the weight of the chain saw rest on the trunk.  
What is kickback?  
The word kickback is used to describe the sudden  
reaction that causes the chain saw and bar to jump off an  
object when the upper quadrant of the tip of the bar,  
known as the kickback zone, touches an object.  
Keep the trunk between you and the chain saw as you  
move along the trunk.  
Cutting the trunk into logs  
See instructions under the heading Basic cutting  
technique.  
Kickback always occurs in the cutting plane of the bar.  
Normally the chain saw and bar are thrown backwards  
and upwards towards the user. However, the chain saw  
may move in a different direction depending on the way it  
was being used when the kickback zone of the bar  
touched the object.  
28 – English  
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MAINTENANCE  
Fine adjustment  
Carburettor  
When the saw has been ”run-inthe carburettor should be  
finely adjusted.The fine adjustment should be carried out  
by qualified person. The L-needle is adjusted first, then  
the idling screw T.  
Your Husqvarna product has been designed and  
manufactured to specifications that reduce harmful  
emissions. After the engine has used 8-10 tanks of fuel  
the engine will be run-in.To ensure that it continues to run  
at peak performance and to minimise harmful exhaust  
emissions after the running-in period, ask your dealer/  
service workshop (who will have a rev counter at their  
disposal) to adjust your carburettor.  
The recommended engine speeds are as follows: Idle  
speed 2500 rpm  
Changing the type of fuel  
Fine tuning may be required if the chain saw, after  
changing the type of fuel, performs differently with regard  
to starting, acceleration, maximum speed, etc.  
Function, Basic settings, Fine adjustment  
WARNING! Do not start the chain saw  
unless the bar, chain and clutch cover  
Conditions  
!
(chain brake) are fitted, otherwise the  
clutch may come loose and cause  
personal injury.  
Before any adjustments are made the air filter should  
be clean and the cylinder cover fitted. Adjusting the  
carburettor while a dirty air filter is in use will result in  
a leaner mixture next time the filter is cleaned. This  
can give rise to serious engine damage.  
Function  
The carburettor governs the engine’s speed via the  
throttle control. Air and fuel are mixed in the  
carburettor.The air/fuel mixture is adjustable. Correct  
adjustment is essential to get the best performance  
from the machine.  
Turn the low speed jet carefully clockwise until it  
bottoms. Now turn it one turn anti-clockwise. The  
carburettor is now set to L = 1.  
Now start the machine according to the starting  
instructions and let it warm up for 10 minutes.  
CAUTION! If the chain rotates while idling the T-  
screw must be turned anti-clockwise until the  
chain stops.  
Adjusting the carburettor means that the engine is  
adapted to local operating conditions, e.g. climate,  
altitude, petrol and the type of 2-stroke oil.  
The carburettor has two adjustment controls:  
- L = Low speed jet  
Place the machine on a flat surface so that the bar  
points away from you and so that the bar and chain do  
not come into contact with the surface or other  
objects.  
- T = Idle adjustment screw (Maximum speed is  
controlled by a fixed jet/electronic speed governor).  
Low speed jet L  
Try to find the highest idle speed by turning the low speed  
jet L clockwise then anti-clockwise. When the highest  
speed has been found, turn the low speed jet L 1/4 turn  
anti-clockwise.  
CAUTION! If the chain rotates while idling theT-screw  
must be turned anti-clockwise until the chain stops.  
The amount of fuel that is mixed with the air admitted  
by the throttle opening is adjusted using the low speed  
jet. If this is turned clockwise it gives a leaner air/fuel  
mixture (less fuel) and if it is turned anti-clockwise it  
gives a richer air/fuel mixture (more fuel). A leaner  
mixture gives a higher engine speed, while a richer  
mixture gives a lower engine speed.  
The T-screw regulates the throttle setting at idle  
speed. If the T-screw is turned clockwise this gives a  
higher idle speed; turning it anti-clockwise gives a  
lower idle speed.  
Fine adjustment of the idle speed T  
Adjust the idle speed with the T-screw. If it is necessary to  
re-adjust, turn the T-screw clockwise while the engine is  
running, until the chain starts to rotate. Then turn anti-  
clockwise until the chain stops. When the idle speed is  
correctly adjusted the engine should run smoothly in  
every position and the engine speed should be safely  
below the speed at which the chain starts to rotate.  
WARNING! Contact your servicing  
dealer, if the idle speed setting cannot be  
!
adjusted so that the chain stops. Do not  
use the chain saw until it has been  
properly adjusted or repaired.  
Basic settings and running in  
The basic carburettor settings are adjusted during testing  
at the factory. The basic setting is: L = 1 turn.  
English 29  
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MAINTENANCE  
Checking the front hand guard  
High speed jet H  
This chain saw is equipped with a carburettor that has a  
built-in fixed high speed jet.  
CAUTION! There is an integrated speed governor in the  
ignition that limits the maximum speed to 12,000 rpm.  
Adjusting the jet therefore has no effect on the maximum  
speed. The high speed jet affects the chain saw’s power.  
Make sure the front hand guard is not damaged and that  
there are no visible defects such as cracks.  
CAUTION! Setting the high speed jet too lean reduces the  
engine’s power and causes overheating. This results in  
engine damage.  
Correctly adjusted carburettor  
When the carburettor is correctly adjusted the machine  
accelerates without hesitation and burbles a little at full  
throttle. It is also important that the chain does not rotate  
at idle. If the L-jet is set too lean it may cause starting  
difficulties and poor acceleration. If the H-jet is set too  
lean the machine will have less power, poor acceleration  
and could suffer damage to the engine. If the L and H-jets  
are set too rich it will lead to acceleration problems or too  
low a working speed.  
Move the front hand guard forwards and back to make  
sure it moves freely and that it is securely anchored to the  
clutch cover.  
Checking, maintaining and  
servicing chain saw safety  
equipment  
Checking the inertia brake release  
Note! All service and repair work on the machine  
demands special training. This is especially true of the  
machine’s safety equipment. If your machine fails any of  
the checks described below we recommend that you  
take it to your service workshop.  
Place the chain saw, with the engine switched off, on a  
stump or other stable surface. Release the front handle  
and let the saw fall by its own weight, rotating around the  
rear handle towards the stump.  
Chain brake and front hand guard  
Checking brake band wear  
Brush off any wood dust, resin and dirt from the chain  
brake and clutch drum. Dirt and wear can impair  
operation of the brake.  
When the bar hits the stump the brake should be  
applied.  
Regularly check that the brake band is at least 0.6 mm  
thick at its thinnest point.  
30 – English  
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MAINTENANCE  
Checking the brake trigger  
Check that the throttle control and throttle lockout  
move freely and that the return springs work properly.  
Place the chain saw on firm ground and start it.Make sure  
the chain does not touch the ground or any other object.  
See the instructions under the heading Start and stop.  
Start the chain saw and apply full throttle. Release the  
throttle control and check that the chain stops and  
remains stationary. If the chain rotates when the  
throttle control is in the idle position you should check  
the carburettor idle adjustment.  
Grasp the chain saw firmly, wrapping your fingers and  
thumbs around the handles.  
Chain catcher  
Check that the chain catcher is not damaged and is firmly  
attached to the body of the chain saw.  
Apply full throttle and activate the chain brake by tilting  
your left wrist forward onto the front hand guard. Do not  
let go of the front handle. The chain should stop  
immediately.  
Right hand guard  
Throttle lockout  
Check that the right hand guard is not damaged and that  
there are no visible defects, such as cracks.  
Make sure the throttle control is locked at the idle  
setting when the throttle lockout is released.  
Press the throttle lockout and make sure it returns to  
its original position when you release it.  
English 31  
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MAINTENANCE  
clean the mesh at least once a week. This is best done  
Vibration damping system  
with a wire brush. A blocked mesh will cause the engine  
to overheat and may lead to serious damage.  
Note! The mesh must be replaced if it is damaged. If the  
mesh is blocked the machine will overheat and this will  
cause damage to the cylinder and piston. Never use a  
machine with a muffler that is in poor condition. Never  
use a muffler if the spark arrestor mesh is missing or  
defective.  
Regularly check the vibration damping units for cracks or  
deformation.  
Make sure the vibration damping units are securely  
attached to the engine unit and handle unit.  
The muffler is designed to reduce the noise level and to  
direct the exhaust gases away from the operator. The  
exhaust gases are hot and can contain sparks, which may  
cause fire if directed against dry and combustible  
material.  
Stop switch  
Starter  
Start the engine and make sure the engine stops when  
you move the stop switch to the stop setting.  
WARNING! When the recoil spring is  
wound up in the starter housing it is  
!
under tension and can, if handled  
carelessly, pop out and cause personal  
injury.  
Care must be exercised when replacing  
the return spring or the starter cord.  
Wear protective glasses and protective  
gloves.  
Changing a broken or worn starter cord  
Muffler  
Length of starter cord: 1100 mm (43")  
Thickness of starter cord: 4.0 mm (5/32")  
Never use a machine that has a faulty muffler.  
Regularly check that the muffler is securely attached to  
Loosen the screws that hold the starter against the  
the machine.  
crankcase and remove the starter.  
Some mufflers are equipped with a special spark arrestor  
mesh. If your machine has this type of muffler, you should  
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MAINTENANCE  
Pull out the cord approx. 30 cm and hook it into the  
Changing a broken recoil spring  
notch in the rim of the pulley. Release the recoil spring  
by letting the pulley rotate slowly backwards.  
Lift up the starter pulley. See instructions under the  
heading Changing a broken or worn starter cord.  
Remember that the recoil spring is coiled under  
tension in the starter housing.  
Undo the screw in the centre of the pulley and remove  
the pulley. Insert and fasten a new starter cord to the  
pulley. Wind approx. 3 turns of the starter cord onto  
the pulley. Connect the pulley to the recoil spring so  
that the end of the spring engages in the pulley. Fit the  
screw in the centre of the pulley.Insert the starter cord  
through the hole in the starter housing and the starter  
handle. Make a secure knot in the end of the starter  
cord.  
Remove the recoil spring from inside the pulley by  
tapping the pulley lightly with its inside face  
downwards against a work bench or the like. If the  
spring pops out during fitting, wind it up again, working  
from the outside in towards centre.  
Tensioning the recoil spring  
Hook the starter cord in the notch in the pulley and  
Lubricate the recoil spring with light oil. Fit the  
cassette with recoil spring in the starter. Fit the starter  
pulley and tension the recoil spring.  
turn the starter pulley about 2 turns clockwise.  
Note! Check that the pulley can be turned at least a  
further 1/2 turn when the starter cord is pulled all the  
way out.  
Fitting the starter  
To t the starter, first pull out the starter cord and place  
the starter in position against the crankcase. Then  
slowly release the starter cord so that the pulley  
engages with the pawls.  
Fit and tighten the screws that hold the starter.  
English 33  
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MAINTENANCE  
Air filter  
Spark plug  
The air filter must be regularly cleaned to remove dust  
and dirt in order to avoid:  
The spark plug condition is influenced by:  
Incorrect carburettor adjustment.  
Carburettor malfunctions  
Starting problems  
Loss of engine power  
Unnecessary wear to engine parts.  
Excessive fuel consumption.  
Remove the air filter after taking off the air filter cover.  
When refitting make sure that the air filter seals tightly  
against the filter holder. Clean the filter by brushing or  
shaking it.  
An incorrect fuel mixture (too much or incorrect type  
of oil).  
A dirty air filter.  
These factors cause deposits on the spark plug  
electrodes, which may result in operating problems and  
starting difficulties.  
If the machine is low on power, difficult to start or runs  
poorly at idle speed: always check the spark plug first  
before taking any further action. If the spark plug is dirty,  
clean it and check that the electrode gap is 0.5 mm. The  
spark plug should be replaced after about a month in  
operation or earlier if necessary.  
Note! Always use the recommended spark plug type! Use  
of the wrong spark plug can damage the piston/cylinder.  
Check that the spark plug is fitted with a suppressor.  
The filter can be cleaned more thoroughly by washing it in  
water and detergent.  
Lubricating the bar tip sprocket  
Lubricate the bar tip sprocket each time you refuel. Use  
the special grease gun and a good quality bearing grease.  
An air filter that has been in use for a long time cannot be  
cleaned completely.The filter must therefore be replaced  
with a new one at regular intervals. A damaged air filter  
must always be replaced.  
A HUSQVARNA chain saw can be equipped with different  
types of air filter according to working conditions, weather,  
season, etc. Contact your dealer for advice.  
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MAINTENANCE  
Needle bearing lubrication  
Cooling system  
The clutch drum is fitted with one of the following drive  
sprockets:  
To keep the working temperature as low as possible the  
machine is equipped with a cooling system.  
The cooling system consists of:  
A
Spur sprocket (the chain sprocket is welded on the drum)  
•B Rim sprocket (replaceable)  
1
2
3
4
5
Air intake on the starter.  
Air guide plate.  
Fins on the flywheel.  
Cooling fins on the cylinder.  
Cylinder cover (directs cold air over the cylinder).  
• Both versions have a needle bearing on the drive shaft,  
which has to be greased regularly (once a week).  
NOTE! Use a high-quality bearing grease or engine oil.  
Adjustment of the oil pump  
Clean the cooling system with a brush once a week, more  
often in demanding conditions. A dirty or blocked cooling  
system results in the machine overheating which causes  
damage to the piston and cylinder.  
The oil pump is adjustable. Adjustments are made by  
turning the screw using a screwdriver or combination  
spanner. The machine is supplied from the factory set to  
1 turn open. Turning the screw clockwise will reduce the  
oil flow and turning the screw anti-clockwise will increase  
the oil flow.  
WARNING! The engine must not be  
running when making adjustments.  
!
Recommended settings:  
Bar 24"-28":  
Bar 28"-34":  
Bar 34"-42":  
0 turns from the closed position.  
3/4 turns from the closed position.  
1 1/2 turns from the closed position.  
Bar 42" and longer: 1 3/4 turns from the closed position.  
These recommendations apply to Husqvarna’s chain oil,  
for other chain oils increase the oil flow by one step.  
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MAINTENANCE  
Maintenance schedule  
The following is a list of the maintenance that must be performed on the machine. Most of the items are described in the  
Maintenance section.  
Daily maintenance  
Weekly maintenance  
Monthly maintenance  
Check the brake band on the chain  
brake for wear. Replace when less  
than 0.6 mm (0,024 inch) remains at  
the most worn point.  
On chain saws without a catalytic  
converter, check the cooling system  
weekly.  
Clean the outside of the machine.  
Check that the components of the  
throttle control work safely. (Throttle  
lockout and throttle control.)  
Check the starter, starter cord and  
return spring.  
Check the clutch centre, clutch drum  
and clutch spring for wear.  
Clean the chain brake and check that  
it operates safely. Make sure that the Check that the vibration damping  
Clean the spark plug. Check that the  
electrode gap is 0.5 mm.  
chain catcher is undamaged, and  
replace it if necessary.  
elements are not damaged.  
The bar should be turned daily for  
more even wear. Check the  
lubrication hole in the bar, to be sure it  
is not clogged. Clean the bar groove.  
If the bar has a sprocket tip, this  
should be lubricated.  
Lubricate the clutch drum bearing.  
Clean the outside of the carburettor.  
Check that the bar and chain are  
getting sufficient oil.  
File off any burrs from the edges of  
the bar.  
Check the fuel filter and the fuel hose.  
Replace if necessary.  
Check the saw chain with regard to  
visible cracks in the rivets and links,  
whether the saw chain is stiff or  
whether the rivets and links are  
abnormally worn. Replace if  
necessary.  
Clean or replace the spark arrestor  
mesh on the muffler.  
Empty the fuel tank and clean the  
inside.  
Sharpen the chain and check its  
tension and condition. Check the  
drive sprocket for excessive wear and  
replace if necessary.  
Empty the oil tank and clean the  
inside.  
Clean the carburettor compartment.  
Clean the air filter. Replace if  
necessary.  
Clean the starter units air intake.  
Check all cables and connections.  
Check that nuts and screws are tight.  
Check that the stop switch works  
correctly.  
Check that there are no fuel leaks  
from the engine, tank or fuel lines.  
On chain saws with a catalytic  
converter, check the cooling system  
daily.  
36 – English  
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TECHNICAL DATA  
Technical data  
3120XP  
Engine  
Cylinder displacement, cm3  
Cylinder bore, mm  
118,8  
60  
Stroke, mm  
42  
Idle speed, rpm  
Power, kW/ rpm  
2500  
6,2/9000  
Ignition system  
Spark plug  
Champion RCJ 7Y/ NGK BPMR 7A  
Electrode gap, mm  
0,5  
Fuel and lubrication system  
Fuel tank capacity, litre  
Oil pump capacity at 9,000 rpm, ml/min  
Oil tank capacity, litre  
Type of oil pump  
1,25  
30-54  
0,7  
Automatic/Manual for extra oil flow  
Weight  
Chain saw without bar or chain, empty tanks, kg  
Noise emissions (see note 1)  
Sound power level, measured dB(A)  
Sound power level, guaranteed LWA dB(A)  
Sound levels (see note 2)  
10,4  
115  
116  
Equivalent sound pressure level at the operator’s ear, dB(A) 102  
Equivalent vibration levels, a hveq (see note 3)  
Front handle, m/s2  
6,7  
7,8  
Rear handle, m/s2  
Chain/bar  
Standard bar length, inch/cm  
Recommended bar lengths, inch/cm  
Usable cutting length, inch/cm  
Pitch, inch/mm  
Thickness of drive links, inch/mm  
Type of drive sprocket/number of teeth  
Chain speed at max. power, m/sec  
24"/60  
24-42”/60-105  
23-42”/57-104  
0,404"/10,26  
1,6  
Rim/7  
21,5  
Note 1: Noise emissions in the environment measured as sound power (LWA) in conformity with EC directive 2000/14/  
EC.  
Note 2: Equivalent sound pressure level, according to ISO 22868, is calculated as the time-weighted energy total for  
different sound pressure levels under various working conditions. Typical statistical dispersion for equivalent sound  
pressure level is a standard deviation of 1 dB (A).  
Note 3: Equivalent vibration level, according to ISO 22867, is calculated as the time-weighted energy total for vibration  
levels under various working conditions. Reported data for equivalent vibration level has a typical statistical dispersion  
(standard deviation) of 1 m/s2.  
English – 37  
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TECHNICAL DATA  
Bar and chain combinations  
The following cutting attachments are approved for the model Husqvarna 3120XP.  
Bar  
Chain  
Length, drive links  
Length, inch Pitch, inch  
Gauge, mm  
Max. nose radius  
Type  
(no.)  
76  
24  
28  
84  
30  
36  
42  
0,404  
1,6  
42 mm  
Husqvarna H64  
92  
104  
124  
Saw chain filing and file gauges  
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TECHNICAL DATA  
EC-declaration of conformity  
(Applies to Europe only)  
Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel +46-36-146500, declares under sole responsibility that the chain  
saw for forest service Husqvarna 3120XP from 2009’s serial numbers and onwards (the year is clearly stated in plain  
text on the type plate with subsequent serial number), is in conformity with the requirements of the COUNCILS  
DIRECTIVES:  
- of May 17, 2006 "relating to machinery" 2006/42/EC  
- of December 15, 2004 ”relating to electromagnetic compatibility” 2004/108/EC.  
- of May 8, 2000 ”relating to the noise emissions in the environment” 2000/14/EC.  
For information relating to noise emissions, see the chapter Technical data.The following standards have been applied:  
EN ISO 12100-2:2003, CISPR 12:2005, EN ISO 11681-1:2004  
Notified body: 0404, SMP Svensk Maskinprovning AB, Fyrisborgsgatan 3, SE-754 50 Uppsala, Sweden, has carried  
out EC type examination in accordance with the machinery directive’s (2006/42/EC) article 12, point 3b.The certificates  
for EC type examination in accordance with annex IX, have the numbers:  
0404/09/2119.  
In addition, SMP, Svensk Maskinprovning AB, Fyrisborgsgatan 3, SE-754 50 Uppsala, Sweden, has certified conformity  
with annex V of the Council’s Directive of May 8, 2000 ”relating to the noise emissions in the environment” 2000/14/EC.  
The certificate has the number: 01/161/020.  
The supplied chain saw conforms to the example that underwent EC type examination.  
Huskvarna December 29, 2009  
Bengt Frögelius, Development director chainsaw R&D (Authorized representative for Husqvarna AB and responsible for  
technical documentation.)  
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Original instructions  
1153183-26  
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2010-04-01  
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