Operator’s manual (EPA II)
445e TrioBrake
Please read the operator’s manual carefully and make sure you understand the instructions
before using the machine.
English
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CONTENTS
FEDERAL EMISSION CONTROL WARRANTY
STATEMENT
Contents
KEY TO SYMBOLS
YOUR WARRANTY RIGHTS AND OBLIGATIONS 40
Symbols on the machine: .....................................
Symbols in the operator’s manual: .......................
CONTENTS
AMERICAN STANDARD SAFETY
PRECAUTIONS
Safety precautions for chain saw users ................ 41
Contents ...............................................................
INTRODUCTION
5
Dear customer! .....................................................
WHAT IS WHAT?
What is what on the chain saw? ...........................
GENERAL SAFETY PRECAUTIONS
Before using a new chain saw ..............................
Important ..............................................................
Always use common sense ..................................
Personal protective equipment .............................
Machine′s safety equipment .................................
Cutting equipment ................................................ 10
ASSEMBLY
Fitting the bar and chain ....................................... 17
FUEL HANDLING
Fuel ...................................................................... 18
Fueling .................................................................. 19
Fuel safety ............................................................ 19
STARTING AND STOPPING
Starting and stopping ........................................... 20
WORKING TECHNIQUES
Before use: ........................................................... 22
General working instructions ................................ 22
How to avoid kickback .......................................... 28
MAINTENANCE
General ................................................................. 30
Carburetor adjustment .......................................... 30
Checking, maintaining and servicing chain saw
safety equipment .................................................. 30
Muffler .................................................................. 33
Starter .................................................................. 33
Air filter ................................................................. 35
Spark plug ............................................................ 35
Lubricating the bar tip sprocket ............................ 35
Needle bearing lubrication ................................... 36
Cooling system ..................................................... 36
”Air Injection” centrifugal cleaning ........................ 36
Winter use ............................................................ 36
Maintenance schedule ......................................... 37
TECHNICAL DATA
Technical data ...................................................... 38
Bar and chain combinations ................................. 39
Saw chain filing and file gauges ........................... 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 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.
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 dealer.
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
operator′s manual as a valuable document. By following its′ content (using, service, maintenance etc) the life span and
the second-hand value of the machine can be extended.If you ever lend or sell this machine, make sure that the borrower
or buyer gets the operator′s 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.
4 – English
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WHAT IS WHAT?
1
32
14
2
3
4
31
5
13
12
6
15 16
11
8
10
9
7
29
18 19
30
17
22
28
20
23
25 24
26
21
27
What is what on the chain saw?
1
2
3
4
5
6
7
8
9
Cylinder cover
17 Muffler
18 Chain
Decompression valve
Air purge
19 Bar tip sprocket
20 Bar
Start reminder
Combined start and stop switch
Rear handle
21 Knob
22 Bumper spike
23 Chain catcher
Information and warning decal
Fuel tank
24 Chain tensioner wheel
25 Clutch cover
Adjuster screws carburetor
10 Starter handle
26 Right hand guard
27 Throttle control
11 Starter
12 Chain oil tank
28 Throttle lockout
13 Product and serial number plate
14 Felling direction mark
15 Front handle
29 Right-hand brake trigger
30 Operator’s manual (EPA)
31 Bar guard
16 Front hand guard
32 Combination spanner
English – 5
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GENERAL SAFETY PRECAUTIONS
Before using a new chain saw
WARNING! Never allow children to use or
be in the vicinity of the machine. As the
machine is equipped with a spring-
loaded stop switch and can be started by
low speed and force on the starter
handle, even small children under some
circumstances can produce the force
necessary to start the machine.This can
mean a risk of serious personal injury.
Therefore remove the spark plug cap
when the machine is not under close
supervision.
•
Please read this manual carefully.
!
•
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
Stopping.
Do not use the chain saw until sufficient chain oil has
reached the chain.See instructions under the heading
Cutting equipment.
Long-term exposure to noise can result in permanent
hearing impairment. So always use approved hearing
protection.
Important
IMPORTANT!
The machine is only designed for cutting wood.
WARNING! Under no circumstances may
the design of the machine be modified
You should only use the saw with the bar and chain
combinations we recommend in the chapter Technical
data.
!
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.Your
warranty may not cover damage or
liability caused by the use of non-
authorized accessories or replacement
parts.
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.
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.
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.
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.
!
Never use any accessories other than those
recommended in this manual. See instructions under
the headings Cutting equipment and Technical data.
WARNING! The inside of the muffler
contain chemicals that may be
carcinogenic. Avoid contact with these
elements in the event of a damaged
muffler.
!
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! Long term inhalation of the
engine’s exhaust fumes, chain oil mist
and dust from sawdust can represent a
health risk.
!
WARNING! Running an engine in a
confined or badly ventilated area can
result in death due to asphyxiation or
carbon monoxide poisoning.
WARNING! The ignition system of this
machine produces an electromagnetic
!
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.
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 physician and the pacemaker
manufacturer before operating this
machine.
6 – English
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GENERAL SAFETY PRECAUTIONS
•
•
•
•
Protective goggles or a visor
Gloves with saw protection
Trousers with saw protection
Always use common sense
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 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.
Boots with saw protection, steel toe-cap and non-slip
sole
•
•
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.
′
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
carried out correctly and if service and/or repairs are not
carried out professionally. If you need further information
please contact your nearest servicing dealer.
WARNING! Never use a machine with
defective safety components. Safety
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.
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.
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.
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.
•
•
Approved protective helmet
Hearing protection
English – 7
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GENERAL SAFETY PRECAUTIONS
•
•
The chain brake (A) can either be activated manually
(by your left hand) or automatically by the inertia
release mechanism.
activated for long periods.The chain saw can become
very hot.
The brake is applied when the front hand guard (B) is
pushed forwards.
B
E
•
This movement activates a spring-loaded mechanism
that tightens the brake band (C) around the engine
drive system (D) (clutch drum).
•
To release the chain brake pull the front hand guard
backwards, towards the front handle.
•
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.
•
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.
•
•
The chain brake must be engaged when the chain
saw is started to prevent the saw chain from rotating.
•
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.
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.
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. Do not leave
the chain saw switched on with the chain brake
8 – English
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GENERAL SAFETY PRECAUTIONS
If the kickback is less violent or the kickback zone of
Will my chain brake always protect me
from injury in the event of a kickback?
the bar is closer to you the chain brake is designed to
be activated manually by the movement of your left
hand.
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.
•
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.
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.
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.
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).
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.
Will my inetria activated chain brake
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.
English – 9
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GENERAL SAFETY PRECAUTIONS
Right hand guard
Stop switch
Use the stop switch to switch off the engine.
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.
Muffler
The muffler is designed to keep noise levels to a minimum
and to direct exhaust fumes away from the user.
Vibration damping system
Your machine is equipped with a vibration damping
system that is designed to reduce vibration and make
operation easier.
WARNING! The exhaust fumes from the
engine are hot and may contain sparks
!
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
The machine′s vibration damping system reduces the
transfer of vibration between the engine unit/cutting
equipment and the machine′s handle unit.The body of the
chain saw, including the cutting equipment, is insulated
from the handles by vibration damping units.
equipped with an approved type of spark arrestor screen.
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.
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.
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
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
off the bar.
symptoms may be increased in cold
temperatures.
•
•
•
Obtain optimal cutting performance.
Extend the life of cutting equipment.
Avoid increasing vibration levels.
10 – English
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GENERAL SAFETY PRECAUTIONS
General rules
Cutting equipment designed to reduce
kickback
•
Only use cutting equipment recommended by us!
See instructions under the heading Technical data.
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.
!
•
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.
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.
Bar
•
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.
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.
IMPORTANT! No saw chain design eliminates the
danger of kickback.
•
•
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.
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.
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.
Bar
•
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.
English – 11
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GENERAL SAFETY PRECAUTIONS
•
Number of drive links. The number of drive links is
•
A sharp chain eats its way through the wood and
determined by the length of the bar, the chain pitch
and the number of teeth on the bar tip sprocket.
produces long, thick chips or shavings.
•
Bar groove width (inches/mm). The groove in the bar
must match the width of the chain drive links.
•
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).
When you sharpen a cutting tooth there are four important
factors to remember.
•
Chain oil hole and hole for chain tensioner. The bar
must be matched to the chain saw design.
1
Filing angle
Chain
2
Cutting angle
•
Chain pitch (inches)
3
4
File position
•
Drive link width (mm/inches)
Round file diameter
•
Number of drive links.
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.
Sharpening your chain and adjusting
depth gauge setting
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 shavings.
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.
!
12 – English
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GENERAL SAFETY PRECAUTIONS
Sharpening cutting teeth
Adjustment of depth gauge setting
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.
•
•
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.
•
•
Check that the chain is correctly tensioned. A slack
chain will move sideways, making it more difficult to
sharpen correctly.
•
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
tool.
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.
•
File all the teeth to the same length. When the length
of the cutting teeth is reduced to 0.16 inch (4 mm) the
chain is worn out and should be replaced.
Tensioning the chain
WARNING! A slack chain may jump off
the bar and cause serious or even fatal
injury.
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.
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 you cannot pull it round freely by hand.
WARNING! The risk of kickback is
increased if the depth gauge setting is
too large!
!
English – 13
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GENERAL SAFETY PRECAUTIONS
•
Release the knob by folding it out.
•
Fold the knob back in to lock the tensioning.
•
Turn the knob anti clockwise to loosen the bar cover.
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
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.
•
Adjust the tension on the chain by turning the wheel
down (+) for tighter tension and up (-) to loosen the
tension.
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
recommended.
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 jamming.
•
Tighten the bar clutch by turning the knob clockwise.
Filling with chain oil
•
All our chain saws have an automatic chain lubrication
system. On some models the oil flow is also
adjustable.
•
The saw chain oil tank and the fuel tank are designed
so that the fuel runs out before the saw chain oil.
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).
14 – English
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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.
Needle bearing lubrication
If the chain lubrication is not working:
•
•
•
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 only high quality bearing grease or
engine oil.
See instructions under the heading Maintenance, Needle
bearing lubrication.
Checking wear on cutting equipment
Check that the groove in the edge of the bar is clean.
Clean if necessary.
Check the chain daily for:
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.
•
•
•
Visible cracks in rivets and links.
Whether the chain is stiff.
Whether rivets and links are badly worn.
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.
If the chain lubrication system is still not working after
carrying out the above checks and associated measures
you should contact your servicing dealer.
English – 15
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GENERAL SAFETY PRECAUTIONS
Bar
•
To prolong the life of the bar you should turn it over
regularly.
Check regularly:
•
Whether there are burrs on the edges of the bar.
Remove these with a file if necessary.
WARNING! Most chain saw accidents
happen when the chain touches the
operator.
Wear personal protective equipment. See
instructions under the heading Personal
protective equipment.
•
•
Whether the groove in the bar has become badly
worn. Replace the bar 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 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.
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
precautions.
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ASSEMBLY
Tension the chain by turning the wheel down (+). The
chain should be tensioned until it does not sag from the
underside of the bar.
Fitting the bar and chain
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.
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 knob by
turning the knob clockwise.
Loosen the chain tensioner wheel and remove the clutch
cover (chain brake). Remove the transport guard.
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.
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.
Fit the clutch cover and locate the chain adjuster pin in the
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.
English – 17
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FUEL HANDLING
Mixing ratio
1:50 (2%) for all engines.
Fuel
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.
Gasoline, litre
Two-stroke oil, litre
2% (1:50)
0,10
5
10
0,43/0,20
0,30
15
20
0,40
WARNING! Always ensure there is
adequate ventilation when handling fuel.
US gallon
US fl. oz.
2 1/2
!
1
2 1/2
5
6 1/2
Gasoline
12 7/8
Mixing
•
•
Use good quality unleaded gasoline.
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 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 damage.
•
•
Always mix the gasoline and oil in a clean container
intended for fuel.
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.
Do not mix more than one month’s supply of fuel at a
time.
If the machine is not used for some time the fuel tank
should be emptied and cleaned.
•
•
•
When working with continuous high revs (e.g.limbing)
a higher octane is recommended.
Environment fuel
HUSQVARNA recommends the use of alkylate fuel or
environmental fuel for four-stroke engines blended with
two-stroke oil as set out below. Note that carburetor
adjustment may be necessary when changing the type of
fuel (see instructions under the heading Carburetor).
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 two-stroke oil intended for water-cooled
engines, sometimes referred to as outboard oil (rated
TCW).
•
•
•
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.
Never use oil intended for four-stroke engines.
•
Contact your service agent when choosing chain oil.
18 – English
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FUEL HANDLING
•
Move the machine at least 10 ft (3 m) from the
refuelling point before starting it.
Fueling
WARNING! Taking the following
precautions, will lessen the risk of fire:
!
Min. 3 m
(10 ft)
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.
•
Never start the machine:
1
If you have spilled fuel or chain oil on the machine.
Wipe off the spillage and allow remaining fuel to
evaporate.
When refuelling, open the fuel cap slowly
so that any excess pressure is released
gently.
2
3
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.
Tighten the fuel cap carefully after
refuelling.
If the machine is leaking fuel.Check regularly for leaks
from the fuel cap and fuel lines.
Always move the machine away from the
refuelling area before starting.
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.
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.
!
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 gas station.
•
•
Ensure the machine is cleaned and that a complete
service is carried out before long-term storage.
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.
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.
!
Fuel safety
•
Remove the spark plug cap from the spark plug.
Activate the chain brake.
•
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).
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.
English – 19
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STARTING AND STOPPING
Starting and stopping
WARNING! Note the following before
starting:
!
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 until the engine fires (4).
The chain brake must be engaged when
the chain saw is started to reduce the
chance of contact with the moving chain
during starting.
Push down the red choke control (5) as soon as the
engine fires which can be heard through a "puff" sound.
Keep on pulling the cord powerfully until the engine starts.
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.
Warm engine
When the chain saw is heated restart the saw only by
pulling the cord powerfully until the engine starts (6).
Place the machine on firm ground. Make
sure you have a secure footing and that
the chain cannot touch anything.
Never wrap the starter cord around your hand
Keep people and animals well away from
the working area.
Starting
The chain brake should be activated when starting the
chain saw. Activate the chain brake by pushing the front
hand guard forwards.
There is a simplified start reminder with illustrations to
describe each step on the rear edge of the saw (A).
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 disengaging the throttle lock. Disengagement is done
by gently touching on the throttle trigger. This prevents
unnecessary wear to the clutch, clutch drum and brake
band.
Cold engine
Start position (1): Set the start/stop switch in the choke
position by pulling the red control outward - upward (1).
Decompression valve (2): Press the valve to reduce the
pressure in the cylinder and make starting easier. Once
the machine has started the valve will automatically return
to its original setting.
Air purge (3): Press the air purge diaphragm repeatedly
until fuel fills the diaphragm (at least 6 times). The
diaphragm need not be completely filled.
Allow the machine to idle a few seconds before giving full
throttle.
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STARTING AND STOPPING
CAUTION! Do not pull the starter cord all the way out and
•
Observe your surroundings and make sure that there
do not let go of the starter handle when the cord is fully
extended. This can damage the machine.
is no risk of people or animals coming into contact with
the cutting equipment.
•
Always hold the saw with both hands. The right hand
should be on the rear handle, and the left hand on the
front handle. All people, whether right or left handed,
should use this grip. Use a firm grip with thumbs and
fingers encircling the chain saw handles.
Note! Pull the front hand guard towards the front
handle.The chain brake is now disengaged.Your saw
is ready for use.
WARNING! Long term inhalation of the
engine’s exhaust fumes, chain oil mist
and dust from sawdust can represent a
health risk.
!
•
Never start a chain saw unless the bar, chain and all
covers are fitted correctly. See instructions under the
heading Assembly. Without a bar and chain attached
to the chain saw the clutch can come loose and cause
serious injury.
Stopping
Stop the engine by pushing the start/stop switch down.
•
The chain brake should be activated when starting.Se
instructions under the heading Start and stop. Do not
drop start. This method is very dangerous because
you may lose control of the saw.
CAUTION! The start/stop switch automatically returns to
run position. To avoid involuntary start up, the spark plug
cap must always be removed from the spark plug when
the machine is unsupervised.
•
Never start the machine indoors. Exhaust fumes can
be dangerous if inhaled.
English – 21
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WORKING TECHNIQUES
Basic safety rules
Before use:
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.
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.
CAUTION! Follow the instructions above, but do not use a
chain saw in a situation where you cannot call for help in
case of an accident.
4
Check that the stop switch works correctly and is not
damaged.
2
3
4
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.
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.
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.
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.
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.
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 are not sure you can handle!
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.
5
Take great care when cutting a tree that is under
tension. A tree that is under 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.
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.
Wear personal protective equipment. See instructions
under the heading Personal protective equipment.
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WORKING TECHNIQUES
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.
6
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.
7
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.
4
Never use the chain saw above shoulder height
and avoid cutting with the tip of the bar. Never use
the chain saw one-handed!
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.
2
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 minimizes the
effect of kickback and lets you keep the chain saw
under control. Do not let go of the handles!
5
In order to keep control of your saw, always maintain
a firm foothold. Never work on a ladder, in a tree or on
any other insecure support.
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.
Lack of concentration can lead to kickback if the
kickback zone of the bar accidentally touches a
branch, nearby tree or some other object.
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 with a pushing chain. The
chain tries to push the chain saw back towards the
English – 23
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WORKING TECHNIQUES
user. If the saw chain is jamming, the saw may be
Terms
pushed back at you.
Cutting = General term for cutting through wood.
Limbing = Cutting branches off a felled tree.
Splitting = When the object you are cutting breaks off
before the cut is complete.
There are five important factors you should consider
before making a cut:
1
Make sure the cutting equipment will not jam in the
cut.
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 can lead to a kickback.
2
3
Make sure the object you are cutting will not split.
Cutting with the bottom edge of the bar, i.e. from the top
of the object downwards, is known as cutting with a
pulling chain. 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
with a pulling chain gives the operator better control over
the chain saw and the position of the kickback zone.
Make sure the chain will not strike the ground or any
other object during or after cutting.
4
Is there a risk of kickback?
9
Follow the instructions on sharpening and maintaining
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.
5
Do the conditions and surrounding terrain affect how
safely you can stand and move about?
Basic cutting technique
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.
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.
!
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.
General
•
•
Always use full throttle when cutting!
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.
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).
•
•
Cutting from above = Cutting with a pulling chain.
Cutting from below = Cutting with pushing chain.
The following instructions describe how to handle the
common situations you are likely to encounter when using
a chain saw.
Cutting with a pushing chain increases the risk of
kickback. See instructions under the heading How to
avoid kickback.
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WORKING TECHNIQUES
Limbing
Turn the log and finish the cut from the opposite side.
When limbing thick branches you should use the same
approach as for cutting.
Cut difficult branches piece by piece.
2
1
The log is supported at one end. There is a high risk
that it will split.
3
Cutting
Start by cutting from below (about 1/3 of the way through).
Finish by cutting from above so that the two cuts meet.
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.
The log is supported at both ends. There is a high risk
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.
that the chain will jam.
Remove the cut pieces from the cutting area. By leaving
them in the cutting area, you increase the risk for
inadvertently getting a kickback, as well as increasing the
risk of losing your balance while working.
Start by cutting from above (about 1/3 of the way through).
Finish by cutting from below so that the two cuts meet.
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.
Tree felling technique
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 beyond your experience level!
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.
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.
If it is possible (can you turn the log?) stop cutting about
2/3 of the way through the log.
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WORKING TECHNIQUES
Felling direction
Clearing the trunk and preparing your retreat
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.
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.
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:
•
•
•
•
•
•
Lean of the tree
Bend
Wind direction
Arrangement of branches
Weight of snow
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.
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.
D
a
n
g
e
r z
o
n
e
Felling direction
D
Retreat path
Danger zone
a
n
g
e
r z
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.
o
n
e
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.
Felling
WARNING! Unless you have special
training we advise you not to fell trees
with a diameter larger than the bar length
of your saw!
!
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.
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.
IMPORTANT! During critical felling operations, hearing
protectors should be lifted immediately when sawing is
completed so that sounds and warning signals can be
heard.
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WORKING TECHNIQUES
Next make the bottom cut so that it finishes exactly at the
end of the top cut.
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 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°.
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.
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.
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.
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.
Make the felling cut about 1.5-2 inches (3-5 cm) above the
bottom directional cut.
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.
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.
The felling hinge controls the direction that the tree falls in.
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WORKING TECHNIQUES
necessary to reduce the tension and make the tree or
branch break at the point of maximum tension.
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 cut straight through a tree or branch that is in
tension!
Never work in the risk zone of the hanging trapped tree.
If you must cut across tree/limb, make two to three cuts,
one inch apart, one to two inches deep.
Continue to cut deeper until tree/limb bends and tension
is released.
The safest method is to use a winch.
•
Tractor-mounted
Cut tree/limb from outside the bend, after tension has
been released.
•
Portable
How to avoid kickback
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.
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).
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.
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.
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
Make one or more cuts at or near the point of maximum
tension. Make as many cuts of sufficient depth as
28 – English
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WORKING TECHNIQUES
was being used when the kickback zone of the bar
touched the object.
Kickback only occurs if the kickback zone of the bar
touches an object.
Limbing
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.
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.
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.
English – 29
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MAINTENANCE
General
Checking, maintaining and
servicing chain saw safety
equipment
The user must only carry out the maintenance and
service work described in this manual. More extensive
work must be carried out by an authorised service
workshop.
Note! All servicing and repair work on the machine
requires special training. This is especially true of the
machine′s safety equipment.If your machine fails any of
the checks described below we recommend you to
contact our servicing dealer.
Carburetor adjustment
Your Husqvarna product has been designed and
manufactured to specifications that reduce harmful
emissions.
Function
Chain brake and front hand guard
•
•
The carburetor governs the engine’s speed via the
throttle control. Air and fuel are mixed in the
carburetor. The air/fuel mixture is adjustable. Correct
adjustment is essential to get the best performance
from the machine.
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.
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.
Basic settings and running in
The basic carburetor settings are adjusted during testing
at the factory. Fine adjustment should be carried out by a
skilled technician.
Rec. idle speed: See the Technical data section.
Fine adjustment of the idling speedT
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 counter-
clockwise until the chain stops. A correctly adjusted idle
speed setting occurs when the engine runs smoothly in
every position. It should also be good margin to the rpm
when the chain starts to rotate.
Regularly check that the brake band is at least 0.024 inch
(0.6 mm) thick at its thinnest point.
Checking the front hand guard
WARNING! Contact your servicing
dealer, if the idle speed setting cannot be
adjusted so that the chain stops at idle.
Do not use the chain saw until it has
been properly adjusted or repaired.
Make sure the front hand guard is not damaged and that
there are no visible defects such as cracks.
!
Correctly adjusted carburetor
When the carburetor is correctly adjusted the machine
accelerates without hesitation and the machine 4-cycles a
little at max.speed.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
Move the front hand guard forwards and back to make
sure it moves freely and that it is securely anchored to the
clutch cover.
acceleration and could suffer damage to the engine.
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MAINTENANCE
Checking the inertia brake release
Never carry or hang the saw by the trigger!This could
damage the mechanism and disable the chain brake.
With the engine turned off, hold the chain saw over a
stump or other firm object. Let go of the front handle so
that the bar drops towards the stump as the chain saw
rotates around the rear handle.
Checking the brake trigger
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.
When the bar hits the stump the brake should be
applied.
Grasp the chain saw firmly, wrapping your fingers and
thumbs around the handles.
Checking the right-hand brake trigger
Check that the right hand guard is not damaged and that
there are no visible defects, such as cracks.
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.
Push the trigger up and forwards to check that it moves
freely and is securely hinged to the clutch cover.
English – 31
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MAINTENANCE
Throttle lockout
Chain catcher
Check that the chain catcher is not damaged and is firmly
attached to the body of the chain saw.
•
•
•
•
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.
Right hand guard
Check that the right hand guard is not damaged and that
there are no visible defects, such as cracks.
Check that the throttle control and throttle lockout
move freely and that the return springs work properly.
Vibration damping system
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 carburetor idle adjustment.
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.
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MAINTENANCE
Note! The screen must be replaced if it is damaged. If the
Stop switch
screen 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 screen is missing
or defective.
Start the engine and make sure the engine stops when
you move the stop switch to the stop setting.
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.
CAUTION! The start/stop switch automatically returns to
run 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.
Starter
WARNING! When the recoil spring is
wound up in the starter housing it is
!
Muffler
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.
Never use a machine that has a faulty muffler.
Replacing the starter cord
•
Loosen the screws that hold the starter against the
crankcase and remove the starter.
Regularly check that the muffler is securely attached to
the machine.
•
Pull out the cord approx. 30 cm (12 inches) and hook
it into the notch in the rim of the pulley. Release the
Some mufflers are equipped with a special spark arrestor
screen. If your machine has this type of muffler, you
should clean the screen at least once a week.This is best
done with a wire brush. A blocked screen will cause the
engine to overheat and may lead to serious damage.
English – 33
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MAINTENANCE
recoil spring by letting the pulley rotate slowly
backwards.
Stretch the line with the handle. Move your thumb and
release the line. See the figure below.
2
1
•
Undo the bolt in the centre of the pulley and remove
the drive disc (A), drive disc spring (B) and the pulley
(C). Insert and secure a new starter cord in the starter
pulley. Wind approx. 3 turns of the starter cord on the
starter pulley. Fit the starter pulley so that the end of
the recoil spring (D) hooks into the starter pulley. Now
assemble the drive disc spring, drive disc and the bolt
in the centre of the pulley. Carry the starter cord
through the hole in the starter housing and the starter
handle. Tie a good knot on the starter cord.
Replacing the return and drive springs
Recoil spring (A)
•
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.
•
•
Remove the cassette with the recoil spring from the
starter.
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.
Drive disc spring (B)
•
Undo the bolt in the centre of the pulley and remove
the drive disc and the drive disc spring.
•
Replace the drive disc spring and fit the drive disc
above the spring.
Tensioning the recoil spring
•
Hook the starter cord in the notch in the pulley and
turn the starter pulley about 2 turns clockwise.
A
B
Note! Check that the pulley can be turned an
additional 1/2 turn when the starter cord is pulled all
the way out.
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MAINTENANCE
Fitting the starter
Spark plug
•
To fit 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.
The spark plug condition is influenced by:
•
Fit and tighten the screws that hold the starter.
•
•
Incorrect carburetor adjustment.
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 0.020 inch (0.5
mm). The spark plug should be replaced after about a
month in operation or earlier if necessary.
Air filter
The air filter must be regularly cleaned to remove dust and
dirt in order to avoid:
•
•
•
•
•
•
Carburettor malfunctions
Starting problems
Loss of engine power
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.
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.
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.
The filter can be cleaned more thoroughly by washing it in
water and detergent.
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 filters according to working conditions,
weather, season, etc. Contact your dealer for advice.
English – 35
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MAINTENANCE
Needle bearing lubrication
”Air Injection” centrifugal
cleaning
Centrifugal cleaning means the following: All air to the
carburetor passes through the starter. Dirt and dust is
pushed out by the cooling fan.
The clutch drum has a needle bearing on the output shaft.
This needle bearing must be lubricated regularly.
When lubricating, remove the clutch cover by loosening
the two bar nuts. Lay the saw on its side with the clutch
drum upwards.
Lubrication involves engine oil dripping into the centre of
the clutch drum as it rotates.
IMPORTANT! In order to maintain operation of the centrifugal
cleaning system it must be regularly maintained.Clean the air
intake to the starter, the fins on the flywheel, the space
around the flywheel, inlet pipe and carburetor compartment.
Winter use
Running problems can occur when using the machine in
the cold and snowy conditions caused by:
Cooling system
•
•
Too low engine temperature.
Icing of the air filter and carburetor.
Special measures are therefore often required:
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
•
Partly mask the air inlet on the starter to increase the
working temperature of the engine.
The cooling system consists of:
°
°
Temperature -5 C (23 F) or colder:
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).
For running the machine in cold weather or powder snow,
a special cover is available, which is mounted on the
starter housing. This reduces the intake of cold air and
prevents large amounts of snow from being sucked in.
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.
CAUTION! If the special winterising kit has been fitted or any
measures have been taken to increase the temperature
these changes must be reversed before the machine is used
in normal temperature conditions. Otherwise there is a risk
of overheating, resulting in severe damage to the engine.
IMPORTANT! Any maintenance other than that described
in this manual must be carried out by your servicing dealer
(retailer).
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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 0.024 inch (0.6 mm) 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 0.020 inch (0.5 mm).
chain catcher is undamaged, and
replace it if necessary.
elements are not damaged.
The bar should be turned regularly 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 carburetor.
Check that the bar and chain are
getting sufficient oil.
File off any burrs from the edges of
the bar.
Check fuel hose for cracks or other
damage. Change 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
screen 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.
Clean the carburetor compartment.
Empty the oil tank and clean the inside.
Check all cables and connections.
Clean the air filter. Replace if
necessary.
Clean the starter units air intake.
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.
English – 37
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TECHNICAL DATA
Technical data
445e TrioBrake
Engine
Cylinder displacement, cu.in/cm3
Cylinder bore, inch/mm
Stroke, inch/mm
2,79/45,7
1,65/42
1,30/33
Idle speed, rpm
2700
Power, kW/hp @ rpm
Ignition system
2,1 / 2,8 @ 9000
Manufacturer of ignition system
Type of ignition system
Spark plug
Walbro
MBU-16
NGK BPMR 7A/
Champion RCJ 7Y
Electrode gap, inch/mm
Fuel and lubrication system
Manufacturer of carburetor
Carburetor type
0,02/0,5
Zama
EL 37
Fuel tank capacity, US pint/litre
Oil pump capacity at 9,000 rpm, ml/min
Oil tank capacity, US pint/litre
Type of oil pump
0,99/0,47
13
0,55/0,26
Not adjustable
Weight
Chain saw without bar or chain, empty tanks, lb/kg 11,4/5,2
Chain/bar
Standard bar length, inch/cm
Recommended bar lengths, inch/cm
Usable cutting length, inches/cm
Pitch, inch/mm
15”/38
13-20/33-50
12-19/31-49
0,325/8,25
0,050/1,3
0,058/1,5
Spur/7
Thickness of drive links, inch/mm
Drive sprocket type/teeth
Chain speed at max. power, m/sec
20,0
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TECHNICAL DATA
Recommended original and replacement bar and chain combinations
Following is a list of recommended cutting equipment for the Husqvarna chain saw models 445e TrioBrake. The
combinations of power head, bar and chain have been tested and found to be in accordance with the kickback and
vibration requirements of ANSI B 175.1–2000.
The guide bar nose radius is determined by either the maximum number of teeth in the nose sprocket or the
corresponding maximum nose radius of a solid bar.
The following list is the chain saw manufacturers recommendations. There may be other combinations available, which
will also achieve kickback reduction.
As we are listing the maximum guide bar nose radius, you may use a guide bar with smaller nose radius than in our list.
For guide bars of the same length, all sprocket-nose guide bars of the same pitch and having the same number of
sprocket teeth may be considered to have equivalent kickback energy. A hard nose bar having the same length and nose
radius as a sprocket-nose bar may be considered to have equivalent or less kickback energy than the sprocket-nose bar.
Bar and chain combinations
Chain saw model Husqvarna 445e TrioBrake met the kickback performance requirements of ANSI B 175.1-2000 when
tested with the combinations of bars and saw chains listed below. The saw chain Husqvarna H30 is also classified as a
low kickback saw chain since it met the requirements for low kickback saw chain outlined in ANSI B 175.1-2000. We
recommend to use only the listed combinations of bars and chains for chain saw model Husqvarna 445eTrioBrake.Other
chain saw models may not meet the kickback requirements when equipped with the listed bar and chain combinations.
Bar
Chain
Drive link count
Thickness of drive
links, inch/mm
Length, inch
Pitch, inch
Max. nose radius
Type
13
15
16
18
20
13
15
16
18
20
0,325
0,325
0,325
0,325
0,325
0,325
0,325
0,325
0,325
0,325
10T
10T
10T
10T
10T
10T
10T
10T
10T
12T
56
64
66
72
78
56
64
66
72
78
1,3
1,5
Husqvarna H30
Husqvarna H21/
Husqvarna H25
Note: For the saw chains above (if available) you are free to choose between 0,050" or 0,058" gauge drive links for the
corresponding bar, see the table below.
0,050"/1,3 mm
0,058"/1,5 mm
H30
-
H22
H25
H23
H21
Saw chain filing and file gauges
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FEDERAL EMISSION CONTROL WARRANTY STATEMENT
Garden servicing dealer. If you have any questions
regarding your warranty rights and responsibilities, you
should contact your nearest authorized servicing dealer or
YOUR WARRANTY RIGHTS AND
OBLIGATIONS
call Husqvarna Forest & Garden at 1-800-487-5963.
WARRANTY PERIOD Any warranted part which is not
scheduled for replacement as required maintenance, or
which is scheduled only for regular inspection to the effect of
“repair or replace as necessary” shall be warranted for 2
years.Any warranted part which is scheduled for replacement
as required maintenance shall be warranted for the period of
time up to the first scheduled replacement point for that part.
DIAGNOSISThe owner shall not be charged for diagnostic
labor which leads to the determination that a warranted
part is defective, if the diagnostic work is performed at an
approved Husqvarna Forest & Garden servicing dealer.
CONSEQUENTIAL DAMAGES Husqvarna Forest &
Garden may be liable for damages to other engine
components caused by the failure of a warranted part still
under warranty.
The EPA (The US Environmental Protection Agency),
Environment Canada and Husqvarna Forest & Garden are
pleased to explain the emissions control system warranty
on your 2001 and later small nonroad engine. In U.S. and
Canada, new small nonroad engines must be designed,
built and equipped to meet the federal stringent anti-smog
standards. Husqvarna Forest & Garden must warrant the
emission control system on your small nonroad engine for
the period of time listed below provided there has been no
abuse, neglect or improper maintenance of your unit.Your
emission control system includes Parts such as the
carburetor and the ignition system. Where a warrantable
condition exists, Husqvarna Forest & Garden will repair
your small nonroad engine at no cost to you. Expenses
covered under warranty include diagnosis, parts and labor.
′
MANUFACTURER S WARRANTY
COVERAGE
WHAT IS NOT COVERED
All failures caused by abuse, neglect or improper
maintenance are not covered.
The 2001 and later small nonroad engines are warranted
for two years. If any emission related part on you engine
(as listed above) is defective, the part will be repaired or
replaced by Husqvarna Forest & Garden.
ADD -ON OR MODIFIED PARTS
The use of add-on or modified parts can be grounds for
disallowing a warranty claim. Husqvarna Forest & Garden
is not liable to cover failures of warranted parts caused by
the use of add-on or modified parts.
′
OWNER SWARRANTY RESPONSIBILITIES
As the small nonroad engine owner, you are responsible for
the performance of the required maintenance listed in your
Operator′s Manual. Husqvarna Forest & Garden
HOW TO FILE A CLAIM
recommends that you retain all receipts covering
maintenance on your small nonroad engine, but Husqvarna
Forest & Garden cannot deny warranty solely for the lack of
receipts or for your failure to ensure the performance of all
scheduled maintenance. As the small nonroad engine
owner, you should, however, be aware that Husqvarna Forest
& Garden may deny you warranty coverage if your small
nonroad engine or a part of it has failed due to abuse,
neglect, improper maintenance, unapproved modifications or
the use of parts not made or approved by the original
equipment manufacturer.You are responsible for presenting
your small nonroad engine to a Husqvarna Forest & Garden
authorized servicing dealer as soon as a problem exists.The
warranty repairs should be completed in a reasonable
amount of time, not to exceed 30 days. If you have any
questions regarding your warranty rights and responsibilities,
you should contact your nearest authorized servicing dealer
or call Husqvarna Forest & Garden at 1-800-487-5963.
If you have any questions regarding your warranty rights
and responsibilities, you should contact your nearest
authorized servicing dealer or call Husqvarna Forest &
Garden at 1-800-487-5963.
WHERE TO GET WARRANTY SERVICE
Warranty services or repairs shall be provided at all
Husqvarna Forest & Garden authorized servicing dealers.
MAINTENANCE, REPLACEMENT AND
REPAIR OF EMISSION-RELATED PARTS
Any Husqvarna Forest & Garden approved replacement
part used in the performance of any warranty maintenance
or repairs on emission-related parts, will be provided
without charge to the owner if the part is under warranty.
EMISSION CONTROL WARRANTY PARTS
LIST
WARRANTY COMMENCEMENT DATE
The warranty period begins on the date small nonroad
engine is delivered.
1
2
3
Carburetor and internal parts
Intake pipe, airfilter holder and carburetor bolts.
Airfilter and fuelfilter covered up to maintenance
schedule.
LENGTH OF COVERAGE
Husqvarna Forest & Garden warrants to the initial owner
and each subsequent purchaser that the engine is free
from defects in materials and workmanship which cause
the failure of a warranted part for a period of two years.
4
5
Spark Plug, covered up to maintenance schedule
Ignition Module
MAINTENANCE STATEMENT
The owner is responsible for the performance of all
WHAT IS COVERED
REPAIR OR REPLACEMENT OF PARTS Repair or
replacement of any warranted part will be performed at no
charge to the owner at an approved Husqvarna Forest &
required maintenance, as defined in the operator’s manual.
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AMERICAN STANDARD SAFETY PRECAUTIONS
Other safety precautions
Safety precautions for chain saw
users
(ANSI B 175.1-2000 Annex C)
WARNING! Do not operate a chain saw
with one hand! Serious injury to the
operator, helpers, bystanders or any
combination of these persons may result
from one-handed operation. A chain saw
is intended for two-handed use.
!
Kickback safety precautions
WARNING! Kickback may occur when the
nose or tip of the guide bar touches an
object, or when the wood closes in and
pinches the saw chain in the cut.
!
Do not operate a chain saw when you are fatigued.
Use safety footwear; snug-fitting clothing, protective
gloves, and eye, hearing and head protection devices.
Tip contact in some cases may cause a
lightning fast reverse reaction, kicking
the guide bar up and back towards the
operator.
Use caution when handling fuel. Move the chain saw at
least 10 feet (3 m) from the fueling point before starting
the engine.
Do not allow other persons to be near the chain saw when
starting or cutting with the chain saw. Keep bystanders
and animals out of the work area.
Pinching the saw chain along the top of
the guide bar may push the guide bar
rapidly back towards the operator.
Do not start cutting until you have a clear work area,
secure footing and a planned retreat path from the falling
tree.
Either of these reactions may cause you
to lose control of the saw which could
result in serious personal injury.
Keep all parts of your body away from the saw chain when
the engine is running.
Do not rely exclusively upon the safety
devices built into your saw. As a chain
saw user, you should take several steps
to keep your cutting jobs free from
accident or injury.
Before you start the engine, make sure that the saw chain
is not contacting anything.
Carry the chain saw with the engine stopped, the guide
bar and saw chain to the rear, and the muffler away from
your body.
Do not operate a chain saw that is damaged, improperly
adjusted, or not completely and securely assembled. Be
sure that the saw chain stops moving when the throttle
control trigger is released.
With a basic understanding of kickback, you can reduce
or eliminate the element of surprise. Sudden surprise
contributes to accidents.
Keep a good firm grip on the saw with both hands, the
right hand on the rear handle, and the left hand on the
front handle, when the engine is running. Use a firm grip
with thumbs and fingers encircling the chain saw handles.
A firm grip will help you reduce kickback and maintain
control of the saw. Don’t let go.
Shut off the engine before setting the chain saw down.
Use extreme caution when cutting small size brush and
saplings because slender material may catch the saw
chain and be whipped toward you or pull you off balance.
When cutting a limb that is under tension be alert for
springback so that you will not be struck when the tension
in the wood fibers is released.
Make sure that the area in which you are cutting is free
from obstacles. Do not let the nose of the guide bar
contact a log, branch, or any other obstacle which could
be hit while you are operating the saw.
Keep handles dry, clean and free of oil or fuel mixture.
Operate the chain saw only in well-ventilated areas.
Do not operate a chain saw in a tree unless you have
been specifically trained to do so.
Cut at high engine speeds.
Do not overreach or cut above shoulder height.
Do not operate a chain saw above shoulder height.
Follow manufacturer’s sharpening and maintenance
instructions for the saw chain.
All chain saw service, other than the items listed in the
operator’s/owner’s safety and maintenance instructions,
should be performed by competent chain saw service
personnel. (For example, if improper tools are used to
remove the flywheel or if an improper tool is used to hold
the flywheel in order to remove the clutch, structural
damage to the flywheel could occur and subsequently
cause the flywheel to burst.)
Only use replacement bars and chains specified by the
manufacturer or the equivalent.
When transporting your chain saw, use the appropriate
guide bar guard.
Note:This Annex is intended primarily for the consumer or
occasional user.
English – 41
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2008-06-04
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