Husqvarna Chainsaw 235 User Manual

Operator’s manual (EPA)  
Manuel d’utilisation (EPA)  
Manual de instrucciones (EPA)  
English (6-25)  
French (26-47)  
Spanish (48-67)  
Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.  
Lire attentivement et bien assimiler le manuel d’utilisation avant d’utiliser la machine.  
Lea detenidamente el manual de instrucciones y asegúrese de entender su contenido antes de utilizar la máquina.  
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13 14  
The engine exhaust from this product  
contains chemical known to the State  
of California to cause cancer, birth  
defects or other reproductive harm.  
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5451546-93 Rev.4 2008-04-16  
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5451546-93 Rev.4 2008-04-16  
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6, 8  
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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 Huskvarna  
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 over 300  
years of continuous operation, 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.  
Both of the operators hands must be  
used to operate the chain saw.  
Never operate a chain saw holding it  
with one hand only.  
Contact of the guide bar tip with any  
object must be avoided.  
Today Husqvarna is one of the leading manufacturers in  
the world of forest and garden products, with quality as our  
highest priority.We develop, manufacture and market high  
quality motor driven products for forestry and gardening as  
well as for building and construction industry.  
Your purchase 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 authorized  
dealers, ask for the address of your nearest servicing  
WARNING! Tip contact may cause the  
guide bar to move suddenly upward  
and backward (so-called kickback),  
which may cause serious injury.  
Measured maximum kickback value  
without chain brake for the bar and  
chain combination on the label.  
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  
Other symbols/decals on the machine refer to special  
certification requirements for certain markets.  
You will find the following labels on your chain saw:  
extended. If you ever lend or sell this machine, make sure  
that the borrower or buyer gets the operators manual, so  
they will also know how to properly maintain and use it.  
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.  
For customer assistance, contact us at our website:  
The Emissions Compliance Period referred to on the  
Emission Compliance label indicates the number of  
operating hours for which the engine has been shown to  
meet Federal emissions requirements. Category C = 50  
hours, B = 125 hours, and A = 300 hours.  
Symbols on the machine:  
WARNING! Chain saws can be  
dangerous! Careless or improper use  
can result in serious or fatal injury to  
the operator or others.  
Maintenance, replacement, or repair of the emission  
control devices and system may be performed by any  
nonroad engine repair establishment or individual.  
Please read the operator’s manual  
carefully and make sure you  
understand the instructions before  
using the machine.  
Always wear:  
Approved protective helmet  
Approved hearing protection  
Protective goggles or a visor  
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What is what on the chain saw? (1) Contents  
Product and serial number plate  
Dear customer! .......................................................... 6  
Symbols on the machine: ........................................... 6  
What is what on the chain saw? ................................. 7  
Contents ..................................................................... 7  
Before using a new chain saw .................................... 8  
Important .................................................................... 8  
Always use common sense ........................................ 9  
Personal protective equipment ................................... 9  
Machines safety equipment ...................................... 9  
Cutting equipment ...................................................... 10  
Throttle lockout (Prevents accidental operation of  
throttle control.)  
Front handle  
Cylinder cover  
Front hand guard  
Bumper spike  
Bar tip sprocket  
Rear handle with right hand guard  
10Throttle control  
11Clutch cover  
12Chain catcher  
13Guide bar  
14Saw chain  
Fitting the bar and chain ............................................ 13  
15Starter handle  
Fuel ............................................................................ 14  
Fueling ....................................................................... 14  
Fuel safety .................................................................. 14  
16Chain oil tank  
18Fuel tank  
19Choke control/Start throttle lock  
20Rear handle  
Starting and stopping ................................................. 15  
21Stop switch (Ignition on/off switch.)  
22Adjuster screws carburetor  
23Air purge  
24Information and warning decal  
25Chain tensioning screw  
26Guide bar cover  
27Combination spanner  
28Two-stroke oil  
Before use: ................................................................. 16  
General working instructions ...................................... 16  
How to avoid kickback ................................................ 19  
General ...................................................................... 19  
Carburetor adjustment ............................................... 19  
Checking, maintaining and servicing chain saw safety  
equipment .................................................................. 19  
29Operator’s manual (EPA)  
Muffler ........................................................................ 20  
Air filter ....................................................................... 20  
Spark plug .................................................................. 20  
Maintenance schedule ............................................... 21  
Technical data ............................................................ 22  
Safety precautions for chain saw users ...................... 25  
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For Canada:  
Before using a new chain saw  
Please read this manual carefully.  
WARNING! When using a chain saw, a  
fire extinguisher should be available.  
(1) - (51) refer to figures on p. 2-5.  
Check that the cutting equipment is correctly fitted and  
adjusted. See instructions under the heading Assembly.  
Refuel and start the chain saw. See the instructions  
under the headings Fuel Handling and Starting and  
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  
WARNING! Keep handles dry, clean and  
free of oil.  
WARNING! Beware of carbon monoxide  
poisoning. Operate the chainsaw in well  
ventilated areas only.  
WARNING! Do not attempt a pruning or  
limbing operation in a standing tree  
unless specifically trained to do so.  
WARNING! Under no circumstances may  
the design of the machine be modified  
without the permission of the manufac-  
turer. Always use genuine accessories.  
Non-authorized modifications and/or  
accessories can result in serious  
personal injury or the death of the  
operator or others.Your warranty may  
not cover damage or liability caused by  
the use of non-authorized accessories or  
replacement parts.  
The machine is only designed for cutting wood.  
You should only use the saw with the bar and chain  
combinations we recommend in the chapter Technical  
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.  
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.  
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! The inside of the muffler  
contain chemicals that may be carcino-  
genic. Avoid contact with these elements  
in the event of a damaged muffler.  
WARNING! Long term inhalation of the  
Never use any accessories other than those  
engine’s exhaust fumes, chain oil mist  
recommended in this manual. See instructions under  
and dust from sawdust can represent a  
the headings Cutting equipment and Technical data.  
health risk.  
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! The ignition system of this  
machine produces an electromagnetic  
field during operation.This field may  
under some circumstances interfere with  
pacemakers.To reduce the risk of serious  
or fatal injury, we recommend persons  
with pacemakers to consult their physi-  
cian and the pacemaker manufacturer  
before operating this machine.  
WARNING! Running an engine in a  
confined or badly ventilated area can  
result in death due to asphyxiation or  
carbon monoxide poisoning.  
WARNING! Faulty cutting equipment or  
the wrong combination of bar and saw  
chain increases the risk of kickback!  
Only use the bar/saw chain combi-  
nations we recommend, and follow the  
filing instructions. See instructions  
under the heading Technical data.  
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carried out professionally. If you need further information  
Always use common sense (2)  
please contact your nearest servicing dealer.  
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  
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.  
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  
provide information about which training materials and  
courses are available. 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.  
Take care when using your saw and make sure the  
kickback zone of the bar never touches any object.  
Personal protective equipment  
The chain brake (A) can either be activated manually  
(by your left hand) or automatically by the inertia release  
mechanism. (3)  
WARNING! Most chain saw accidents  
happen when the chain touches the  
The brake is applied when the front hand guard (B) is  
operator.You must use approved  
pushed forwards. (3)  
personal protective equipment whenever  
you use the machine. Personal  
This movement activates a spring-loaded mechanism  
that tightens the brake band (C) around the engine drive  
system (D) (clutch drum). (4)  
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.  
The front hand guard is not designed solely to activate  
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.  
Approved protective helmet  
Hearing protection  
Protective goggles or a visor  
Gloves with saw protection  
Trousers with saw protection  
The chain brake must be engaged when the chain saw  
is started to prevent the saw chain from rotating.  
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.  
To release the chain brake pull the front hand guard  
Boots with saw protection, steel toe-cap and non-slip  
backwards, towards the front handle.  
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.  
Always have a first aid kit nearby.  
Fire Extinguisher and Shovel  
Generally clothes should be close-fitting without restricting  
your freedom of movement.  
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 of  
the chain saw in relation to the object that the kickback  
zone of the bar strikes.  
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.  
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  
If the kickback is less violent or the kickback zone of the  
bar is closer to you the chain brake is designed to be  
activated manually by the movement of your left hand.  
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  
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.  
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  
carried out correctly and if service and/or repairs are not  
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The machines vibration damping system reduces the  
Will my hand always activate the chain  
brake during a kickback?  
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.  
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  
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.  
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.  
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.  
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  
Will my inetria activated chain brake  
always activate during kickback in the  
event of a kickback?  
symptoms normally appear in the fingers,  
hands or wrists.These symptoms may be  
increased in cold temperatures.  
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  
Stop switch  
Use the stop switch to switch off the engine.  
The muffler is designed to reduce noise levels and to direct  
exhaust fumes away from the user.  
Will my chain brake always protect me  
from injury in the event of a kickback?  
WARNING! The exhaust fumes from the  
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.  
engine are hot and may contain sparks  
which can start a fire. Never start the  
machine indoors or near combustible  
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 screen (A). (6)  
Only you and proper working technique can eliminate  
kickback and its danger.  
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. (5)  
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  
Chain catcher  
damaged muffler may substantially in-  
crease 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.  
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).  
Cutting equipment  
Right hand guard  
This section describes how to choose and maintain your  
cutting equipment in order to:  
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.  
Reduce the risk of kickback.  
Reduce the risk of the saw chain breaking or jumping off  
Vibration damping system  
the bar.  
Your machine is equipped with a vibration damping system  
that is designed to reduce vibration and make operation  
Obtain optimal cutting performance.  
Extend the life of cutting equipment.  
Avoid increasing vibration levels.  
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Number of drive links. The number of drive links is  
General rules  
determined by the length of the bar, the chain pitch and  
the number of teeth on the bar tip sprocket.  
Only use cutting equipment recommended by us!  
See instructions under the heading Technical data.  
Bar groove width (inches/mm). The groove in the bar  
must match the width of the chain drive links.  
Chain oil hole and hole for chain tensioner.The bar must  
be matched to the chain saw design.  
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.  
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.  
Chain pitch (inches)  
Drive link width (mm/inches)  
Number of drive links.  
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.  
Sharpening your chain and adjusting  
depth gauge setting  
WARNING! Always wear gloves, when  
working with the chain, in order to  
protect your hands from injury.  
Cutting equipment designed to reduce  
General information on sharpening cutting teeth  
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  
WARNING! Faulty cutting equipment or  
the wrong combination of bar and saw  
chain increases the risk of kickback!  
Only use the bar/saw chain combin-  
ations we recommend, and follow the  
filing instructions. See instructions  
under the heading Technical data.  
A sharp chain eats its way through the wood and  
produces long, thick chips or shavings.  
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). (7)  
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.  
When you sharpen a cutting tooth there are four important  
factors to remember.  
Filing angle  
Cutting angle  
File position  
The smaller the tip radius the lower the chance of kickback.  
Round file diameter  
A chain is made up of a number of links, which are  
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.  
See instructions under the heading Technical data for  
information about sharpening your chain.  
available in standard and low-kickback versions.  
IMPORTANT! No saw chain design eliminates the  
danger of kickback.  
WARNING! Any contact with a rotating  
saw chain can cause extremely serious  
WARNING! Departure from the  
sharpening instructions considerably  
increases the risk of kickback.  
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  
Sharpening cutting teeth  
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.  
Check that the chain is correctly tensioned. A slack  
chain will move sideways, making it more difficult to  
sharpen correctly.  
Length (inches/cm)  
Number of teeth on bar tip sprocket (T).  
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.  
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 and file the teeth  
on the other side.  
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File all the teeth to the same length.When the length of the  
Use the combination spanner to tighten the bar nuts  
cutting teeth is reduced to 0.16 inch (4 mm) the chain is  
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. (12)  
worn out and should be replaced. (8)  
General advice on adjusting depth gauge setting  
Lubricating cutting equipment  
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.  
WARNING! Poor lubrication of cutting  
equipment may cause the chain to snap,  
which could lead to serious, even fatal  
WARNING! The risk of kickback is  
Chain oil  
increased if the depth gauge setting is  
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 has a vegetable oil base. 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  
too large!  
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  
acheive the correct depth gauge setting and bevel for  
the depth gauge.  
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  
resistance as you draw the file along the depth gauge  
Never use waste oil! Using waste oil can be dangerous  
to you and damage the machine and environment.  
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  
Filling with chain oil  
All our chain saws have an automatic chain lubrication  
system. On some models the oil flow is also adjustable.  
Tensioning the chain  
The saw chain oil tank and the fuel tank are designed so  
that the fuel runs out before the saw chain oil.  
WARNING! A slack chain may jump off  
the bar and cause serious or even fatal  
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).  
WARNING! Always wear approved  
protective gloves. Even a non-moving  
chain can cause serious cuts to yourself  
or persons you bump into with an  
exposed chain.  
Checking chain lubrication  
Check the chain lubrication each time you refuel. See  
instructions under the heading Lubricating the bar tip  
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  
The more you use a chain the longer it becomes. It is  
therefore important to adjust the chain regularly to take up  
the slack.  
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  
If the chain lubrication is not working:  
you cannot pull it round freely by hand. (9)  
Check that the oil channel in the bar is not obstructed.  
Clean if necessary.  
Check that the groove in the edge of the bar is clean.  
Clean if necessary.  
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.  
Loosen 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. (10)  
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. (11)  
5451546-93 Rev.4 2008-04-16  
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If the chain lubrication system is still not working after  
Fitting the bar and chain  
carrying out the above checks and associated measures  
you should contact your servicing dealer.  
WARNING! Switch off the engine before  
Chain drive sprocket  
carrying out any checks or maintenance.  
The stop switch automatically returns to  
the start position. In order to prevent  
unintentional starting, the spark plug  
cap must be removed from the spark  
plug when assembling, checking and/or  
performing maintenance.  
The clutch drum is fitted with a Spur sprocket (the chain  
sprocket is welded on the drum).  
Regularly check the degree of wear on the drive sprocket.  
Replace if wear is excessive. Replace the drive sprocket  
whenever you replace the chain.  
Checking wear on cutting equipment  
Always wear gloves, when working with  
the chain, in order to protect your hands  
from injury.  
Check the chain daily for:  
Visible cracks in rivets and links.  
Whether the chain is stiff.  
Whether rivets and links are badly worn.  
Check that the chain brake is in disengaged position by  
moving the front hand guard towards the front handle.  
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  
0.16 inch (4 mm) the chain must be replaced.  
Remove the bar nuts and remove the clutch cover (chain  
brake). Take off the transportation ring. (A)(15)  
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.  
Check regularly:  
Whether there are burrs on the edges of the bar.  
Fit the clutch cover (chain brake) and locate the chain  
adjuster pin in the cut-out in the bar. Check that the drive  
links of the chain fit correctly on the drive sprocket and that  
the chain is in the groove on the bar. Tighten the bar nuts  
finger-tight. (17)  
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. See instructions under the heading  
Tensioning the chain. (18)  
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. (19)  
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. (20)  
Remove these with a file if necessary. (13)  
Whether the groove in the bar has become badly worn.  
Replace the bar if necessary. (14)  
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.  
To prolong the life of the bar you should turn it over daily.  
WARNING! Most chain saw accidents  
happen when the chain touches the  
Wear personal protective equipment.  
See instructions under the heading  
Personal protective equipment.  
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.  
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.  
Check that all the chain saw safety  
features are working. See instructions  
under the headings General working  
instructions and General safety  
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Chain oil  
We recommend the use of special oil (chain oil) with  
good adhesion characteristics.  
Note! The machine is equipped with a two-stroke engine  
and must always be run using a mixture of gasoline 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.  
Never use waste oil. This results in damage to the oil  
pump, the bar and the chain.  
It is important to use oil of the right grade (suitable  
viscosity range) to suit the air temperature.  
In temperatures below 32°F (0°C) some oils become too  
viscous. This can overload the oil pump and result in  
damage to the oil pump components.  
WARNING! Always ensure there is  
adequate ventilation when handling fuel.  
Contact your service agent when choosing chain oil.  
Use good quality unleaded gasoline.  
WARNING! Taking the following  
The lowest recommended octane grade is 87  
((RON+MON)/2). If you run the engine on a lower  
octane grade than 87 so-called knocking can occur.This  
gives rise to a high engine temperature and increased  
bearing load, which can result in serious engine  
precautions, will lessen the risk of fire:  
Do not smoke and do not place any hot  
objects in the vicinity of fuel.  
When working with continuous high revs (e.g. limbing) a  
Always stop the engine and let it cool for  
a few minutes before refuelling.  
higher octane is recommended.  
When refuelling, open the fuel cap  
slowly so that any excess pressure is  
released gently.  
Avoid running at a too high speed for extended periods  
during the first 10 hours.  
Two-stroke oil  
Tighten the fuel cap carefully after  
For best results and performance use HUSQVARNA  
two-stroke engine oil, which is specially formulated for  
our air-cooled two stroke-engines.  
Always move the machine away from the  
refuelling area before starting.  
Never use two-stroke oil intended for water-cooled  
engines, sometimes referred to as outboard oil (rated  
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  
therefore always fill the chain oil tank and fuel tank at the  
same time.  
Never use oil intended for four-stroke engines.  
Mixing ratio  
1:50 (2%) for all engines.  
Gasoline, litre  
Two-stroke oil, litre  
2% (1:50)  
US fl. oz.  
2 1/2  
6 1/2  
12 7/8  
WARNING! Fuel and fuel vapor are  
highly flammable.Take care when  
handling fuel and chain oil. Be aware of  
the risks of fire, explosion and those  
associated with inhalation.  
US gallon  
2 1/2  
Fuel safety  
Never refuel the machine while the engine is running.  
Make sure there is plenty of ventilation when refuelling  
or mixing fuel (gasoline and 2-stroke oil).  
Move the machine at least 10 ft (3 m) from the refuelling  
Always mix the gasoline and oil in a clean container  
point before starting it.  
intended for fuel.  
Never start the machine:  
Always start by filling half the amount of the gasoline to  
be used.Then add the entire amount of oil. Mix (shake)  
the fuel mixture. Add the remaining amount of gasoline.  
Mix (shake) the fuel mixture thoroughly before filling the  
machine’s fuel tank.  
If you have spilled fuel or chain oil on the machine.Wipe  
off the spillage and allow remaining fuel to evaporate.  
If you have spilled 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.  
If the machine is leaking fuel. Check regularly for leaks  
from the fuel cap and fuel lines.  
Do not mix more than one month’s supply of fuel at a  
If the machine is not used for some time the fuel tank  
should be emptied and cleaned.  
5451546-93 Rev.4 2008-04-16  
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