Operator’s manual (EPA)
346XP EPA II 353 EPA I
Please read the operator’s manual carefully and make sure you
understand the instructions before using the machine.
English
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CONTENTS
Contents
KEY TO SYMBOLS
Key to symbols ..............................................................
CONTENTS
Contents .......................................................................
Before using a new chain saw ......................................
SAFETY INSTRUCTIONS
Personal protective equipment ......................................
Machine′s safety equipment .........................................
Checking, maintaining and servicing the machine′s
safety equipment ...........................................................
Cutting equipment ......................................................... 10
How to avoid kickback ................................................... 15
General safety precautions ........................................... 16
General working instructions ........................................ 18
WHAT IS WHAT?
What is what on the chain saw? ................................... 23
ASSEMBLY
Fitting the bar and chain ............................................... 24
FUEL HANDLING
Fuel ............................................................................... 25
The following applies to chain saws with catalytic
converters: .................................................................... 25
Chain oil ........................................................................ 26
Fuelling ......................................................................... 26
STARTING AND STOPPING
Starting and stopping .................................................... 28
MAINTENANCE
Carburettor .................................................................... 30
Starter ........................................................................... 31
Air filter .......................................................................... 32
Spark plug ..................................................................... 32
Muffler ........................................................................... 32
Needle bearing lubrication ............................................ 33
Adjustment of the oil pump ........................................... 33
Cooling system ............................................................. 33
”Air Injection” centrifugal cleaning ................................. 33
Heated handles ............................................................. 34
Electrical carburettor heating ........................................ 34
Winter use ..................................................................... 34
Daily maintenance ........................................................ 35
Weekly maintenance ..................................................... 35
Monthly maintenance .................................................... 35
TECHNICAL DATA
Technical data ............................................................... 36
FEDERAL EMISSION CONTROL WARRANTY
STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS ...... 38
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CONTENTS
You will find the following labels on your machine:
Before using a new chain saw
•
Please read the operator’s manual carefully.
•
Check that the cutting equipment is correctly fitted and
adjusted. See instructions under the heading Assembly.
•
•
Refuel, start the chain saw and check the carburettor
settings. See the instructions under the headings Fuel
Handling, Starting and Stopping, and Carburettor.
Do not use the chain saw until sufficient chain oil has
reached the chain. See instructions under the heading
Lubricating cutting equipment.
IMPORTANT! If the carburettor mixture is too lean it greatly
increases the risk of engine failure. Poor maintenance of the
air filter will cause carbon build-up on the spark plug and lead
to starting difficulties. If the chain is improperly adjusted it will
cause increased wear or damage to the bar, drive sprocket
and chain.
EPA I
Maintenance, replacement, or repair of the emission control
devices and system may be performed by any nonroad
engine repair establishment or individual.
EPA II
WARNING! Under no circumstances may the
design of the machine be modified without
the permission of the manufacturer. Always
!
use genuine accessories. Non-authorized
modifications and/or accessories can result
in serious personal injury or the death of the
operator or others.Your warranty may not
cover damage or liability caused by the use
of non-authorized accessories or
replacement parts.
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.
!
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.
WARNING! The inside of muffler contain
chemicals that may be carcinogenic. Avoid
contact with these elements in the event of a
damaged muffler.
!
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.
WARNING! Long term inhalation of the
engine’s exhaust fumes, chain oil mist and
dust from sawdust can represent a health
For customer assistance call: 704-921-7000 or contact us at
!
risk.
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SAFETY INSTRUCTIONS
′
Personal protective equipment
Machine s safety equipment
This section describes the machine′s safety equipment, its
purpose, and how checks and maintenance should be carried
out to ensure that it operates correctly. See the ”What is
what?” section to locate where this equipment is positioned
on your machine.
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.
WARNING! Never use a machine that has
faulty safety equipment! Carry out the
inspection, maintenance and service
routines listed in this section.
!
•
•
Chain brake and front hand guard
WARNING! Long or continuous exposure to
high noise levels may cause permanent
hearing impairment. Always wear approved
hearing protection when operating a chain
saw.
!
Throttle lock
•
•
•
Protective helmet
Hearing protection
Protective goggles or a visor
•
•
Chain catcher
•
•
Gloves with saw protection
Right hand guard
Protective trousers with saw protection
•
•
Vibration damping system
•
Boots with saw protection, steel toe-cap and non-slip sole
Stop switch
Generally clothes should be close-fitting without restricting
your freedom of movement.
•
•
Muffler
•
Always have a first aid kit nearby.
Cutting equipment. See instructions under the heading
Cutting equipment.
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SAFETY INSTRUCTIONS
due to kickback, you should also apply the chain brake
manually if there is a risk of the chain accidentally hitting
anyone or anything close by.
Chain brake and front hand guard
Your chain saw is equipped with a chain brake that is
designed to stop the chain immediately 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.
•
•
To release the chain brake pull the front hand guard
backwards, towards the front handle.
•
The chain brake (A) can either be activated manually (by
your left hand) or automatically by the inertia release
mechanism (a pendulum that swings independently of the
chain saw. On most of our models the front hand guard
acts as a counterweight in case of kickback).
The brake is applied when the front hand guard (B) is
pushed forwards.
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.
This movement activates a spring-loaded mechanism that
tightens the brake band (C) around the engine drive
system (D) (clutch drum).
•
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 will be
activated by the movement of the counterweight (inertia
activated) in the kickback direction.
•
The front hand guard is not designed solely to activate the
chain brake. Another important feature is that it reduces
the risk of the chain hitting your left hand if you lose grip of
the front handle.
•
•
The chain brake must be engaged when the chain saw is
started.
If the kickback is less violent or the kickback zone of the
bar is closer to you the chain brake will be activated
manually by the movement of your left hand.
You can also use the chain brake as a temporary brake
when you change position or if you put the chain saw
down for a short time! Apart from the fact that a chain saw
with a chain brake greatly reduces the risk of accidents
•
During felling your left hand grasps the front handle in
such a way that it cannot activate the chain brake. In this
position, i.e. when your left hand is in such a position that
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SAFETY INSTRUCTIONS
it cannot affect the movement of the front hand guard, the
chain brake can only be activated by the inertia of the
counterweight.
Vibration damping system
Your machine is equipped with a vibration damping system
that is designed to minimise vibration and make operation
easier.
When you use a chain saw, vibration is generated by the
uneven contact between the chain and the wood you are
cutting.
•
The inertia activated chain brake is a valuable feature but
there are certain factors to remember (see point above).
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. See instructions
under the heading Cutting equipment.
Throttle lock
The throttle lock 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 lock
both move back to their original positions. This movement is
controlled by two independent return springs. This
arrangement means that the throttle control is automatically
locked at the idle setting.
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.
Chain catcher
The chain catcher is designed to catch the chain if it snaps or
jumps off. This should not happen if the chain is properly
tensioned (see instructions under the heading Assembly) and
if the bar and chain are properly serviced and maintained (see
instructions under the heading General working instructions).
WARNING! Overexposure to vibration can
lead to circulatory damage or nerve damage
in people who have impaired circulation.
!
Contact your doctor if you experience
symptoms of overexposure to vibration.
Such symptoms include numbness, loss of
feeling, tingling, pricking, pain, loss of
strength, changes in skin colour or
condition.These symptoms normally appear
in the fingers, hands or wrists.The risk
increases at low temperatures.
Right hand guard
Apart from protecting your hand if the chain jumps or snaps,
the right hand guard stops branches and twigs from
interfering with your grip on the rear handle.
Stop switch
Use the stop switch to switch off the engine.
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SAFETY INSTRUCTIONS
Regularly check that the brake band is at least 0.6 mm thick
at its thinnest point.
Muffler
The muffler is designed to keep noise levels to a minimum and
to direct exhaust fumes away from the user.
Checking the front hand guard
Make sure the front hand guard is not damaged and that there
are no visible defects such as cracks.
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!
!
Move the front hand guard forwards and back to make sure it
moves freely and that it is securely anchored to the clutch
cover.
In areas with a hot, dry climate there is a high risk of fires.
These areas are sometimes controlled by legislation and
requirements that among other things the muffler must be
equipped with an approved type of spark arrestor mesh.
For mufflers it is very important that you follow the instructions
on checking, maintaining and servicing your machine. See
instructions under the heading Checking, maintaining and
servicing the machine’s safety equipment.
WARNING! The muffler gets very hot in use
and remains so for a short time afterwards.
Checking the inertia brake release
!
Do not touch the muffler if it is hot!
WARNING! The catalytic converter 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.
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,maintaining and servicing
′
the machine s safety equipment
WARNING! 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 you must contact
your service agent.When you buy any of our
products we guarantee the availability of
professional repairs and service. If the
retailer who sells your machine is not a
servicing dealer, ask him for the address of
your nearest service agent.
When the bar hits the stump the brake should be applied.
Chain brake and front hand guard
Checking brake band wear
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.
Brush off any wood dust, resin and dirt from the chain brake
and clutch drum. Dirt and wear can impair operation of the
brake.
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SAFETY INSTRUCTIONS
Grasp the chain saw firmly, wrapping your fingers and thumbs
around the handles.
Right hand guard
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.
Vibration damping system
Throttle lock
Regularly check the vibration damping units for cracks or
deformation.
•
Make sure the throttle control is locked at the idle setting
when the throttle lock is released.
Make sure the vibration damping units are securely attached
to the engine unit and handle unit.
•
•
•
Press the throttle lock and make sure it returns to its
original position when you release it.
Stop switch
Check that the throttle control and throttle lock move freely
and that the return springs work properly.
Start the engine and make sure the engine stops when you
move the stop switch to the stop setting.
Start the chain saw and apply full throttle. Release the
throttle control and check that the chain stops and
remains stationary. If the chain rotates when the throttle
control is in the idle position you should check the
carburettor idle adjustment.
Muffler
Never use a machine that has a faulty muffler.
Chain catcher
Check that the chain catcher is not damaged and is firmly
attached to the body of the chain saw.
Regularly check that the muffler is securely attached to the
machine.
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SAFETY INSTRUCTIONS
If the muffler on your machine is fitted with a spark arrestor
•
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.
mesh this must be cleaned regularly. A blocked mesh will
cause the engine to overheat and may lead to serious
damage.
Cutting equipment designed to minimise
kickback
Never use a muffler if the spark arrestor mesh is missing
or defective.
WARNING! Faulty cutting equipment or the
wrong combination of bar and chain
increases the risk of kickback! Use only the
bar and chain combinations that we
!
WARNING! Never use a machine with faulty
safety equipment.The machine’s safety
!
equipment must be checked and maintained
recommend. See the Technical data section.
as described in this section. If your machine
fails any of these checks contact your
service agent to get it repaired.
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.
Cutting equipment
This section describes how to choose and maintain your
cutting equipment in order to:
Bar
The smaller the tip radius the smaller the kickback zone and
the lower the chance of kickback.
•
•
•
•
Reduce the risk of kickback.
Reduce the risk of the chain breaking or jumping.
Obtain maximum cutting performance.
Extend the life of cutting equipment.
General rules
•
Only use cutting equipment recommended by us!
See the Technical data section.
Chain
A chain is made up of a number of links, which are available
in standard and low-kickback versions.
None
Standard
Low-kickback
Cutting link
Drive link
Side link
•
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 raker clearance! Follow our
instructions and use the recommended raker gauge.
Too large a clearance increases the risk of kickback.
Combining these links in different ways gives different
degrees of kickback reduction. In terms of kickback reduction
alone, four different types of link are available.
Level of
kickback
reduction
Cutting link Drive link
Side link
Low
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.
Standard
High
Extra high
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SAFETY INSTRUCTIONS
•
Level of kickback reduction. The level of kickback
reduction offered by a chain is only indicated by its model
number. See the Technical data section to find the model
numbers of chains that are recommended for use with
your model of chain saw.
Some terms that describe the bar and chain
When the cutting equipment supplied with your saw becomes
worn or damaged you must replace it with one of the bars and
chains recommended by us. See the Technical data section.
Bar
•
Length (inches/cm)
Sharpening your chain and adjusting raker
clearance
•
Number of teeth on bar tip sprocket (T). Small number =
small tip radius = low risk of kickback.
WARNING! The risk of kickback is increased
with a badly sharpened chain!
!
General information on sharpening cutting teeth
•
•
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.
•
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 cuttings will be very small.If the chain is very blunt
it will not produce any cuttings at all. Wood powder would
be the only result.
•
A sharp chain eats its way through the wood and produces
long, thick cuttings.
Number of drive links. The number of drive links is
determined by the length of the bar, the chain pitch and
the number of teeth on the bar tip sprocket.
•
•
Bar groove width (inches/mm).The groove in the bar must
match the width of the chain drive links.
•
The cutting part of the chain is called the cutting link and
this consists of a cutting tooth (A) and the raker lip (B).The
cutting depth is determined by the difference in height
between the two.
Chain oil hole and hole for chain tensioner. The bar must
be matched to the chain saw design.
When you sharpen a cutting tooth there are five important
factors to remember.
Chain
1
Filing angle
•
Chain pitch (inches)
•
Drive link width (mm/inches)
Number of drive links.
2
3
Cutting angle
File position
•
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SAFETY INSTRUCTIONS
4
5
Round file diameter
File depth
•
Always file cutting teeth from the inside face. Reduce the
pressure on the return stroke.File all the teeth on one side
first, then turn the chain saw over and file the teeth on the
other side.
•
File all the teeth to the same length. When the length of
the cutting teeth is reduced to 4 mm (0.16") the chain is
worn out and should be replaced.
It is very difficult to sharpen a chain correctly without the right
equipment. We recommend that you use our file gauge. This
will help you obtain the maximum kickback reduction and
cutting performance from your chain.
General advice on setting raker clearance
•
When you sharpen the cutting teeth you reduce the raker
clearance (=cutting depth). To maintain optimal cutting
performance you must file back the raker lip to the
recommended height.
See the Technical data section for information about
sharpening your chain.
See the Technical data section to find the raker clearance
for your particular chain.
WARNING! The following faults will increase
the risk of kickback considerably:
!
File angle too large
Cutting angle too small
File diameter too small
•
On a low-kickback cutting link the front edge of the raker
lip is rounded. It is very important that you maintain this
radius or bevel when you adjust the raker clearance.
•
We recommend that you use our raker gauge to achieve
the correct clearance and bevel on the raker lip.
Sharpening cutting teeth
To sharpen cutting teeth you will need a round file and a file
gauge. See the Technical data section for information on the
size of file and gauge that are recommended for the chain
fitted to your chain saw.
WARNING! The risk of kickback is increased
if the raker clearance is too large!
!
Setting the raker clearance
•
Before setting the raker clearance the cutting teeth should
be newly sharpened. We recommend that you adjust the
raker clearance every third time you sharpen the chain.
NOTE! This recommendation assumes that the length of
the cutting teeth is not reduced excessively.
•
Check that the chain is correctly tensioned. A slack chain
will move sideways, making it more difficult to sharpen
correctly.
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SAFETY INSTRUCTIONS
•
To adjust the raker clearance you will need a flat file and a
•
Raise the tip of the bar and stretch the chain by tightening
raker gauge.
the chain tensioning screw using the combination
spanner. Tighten the chain until it does not sag from the
underside of the bar.
•
•
Place the gauge over the raker lip.
•
Use the combination spanner to tighten the bar nuts 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.
Place the file over the part of the lip that protrudes through
the gauge and file off the excess.The clearance is correct
when you no longer feel any resistance as you draw the
file over the gauge.
Lubricating cutting equipment
WARNING! Poor lubrication of cutting
equipment may cause the chain to snap,
which could lead to serious, even fatal
injuries.
Tensioning the chain
!
Chain oil
WARNING! A slack chain may jump off and
cause serious or even fatal injury.
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.
!
The more you use a chain the longer it becomes. It is
therefore important to adjust the chain regularly to take up the
slack.
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.
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.
In areas where oil specifically for lubrication of saw chains is
unavailable, ordinary EP 90 transmission oil may be used.
The position of the chain tensioning screw on our chain saws
varies from model to model. See the What is what? section to
find out where it is on your model.
Never use waste oil! This is dangerous for yourself, the
machine and the environment.
Filling with chain oil
Tension the chain as tightly as possible, but not so tight that
you cannot pull it round freely by hand.
•
All our chain saws have an automatic chain lubrication
system. On some models the oil flow is also adjustable.
•
The sizes of the chain oil tank and fuel tank have been
chosen so that the engine will run out of fuel before
running out of oil. This means that you should never run
with a dry chain.
•
Undo the bar nuts that hold the clutch cover/chain brake.
Use the combination spanner. Then tighten the bar nuts
by hand as tight as you can.
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 carburettor as recommended
(a weak 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).
The above conditions also apply to chain saw models with
an adjustable oil pump.
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SAFETY INSTRUCTIONS
Checking chain lubrication
Needle bearing lubrication
•
Check the chain lubrication each time you refuel.
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)
Both versions 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.
If the chain lubrication is not working:
•
Check that the oil channel in the bar is not obstructed.
Clean if necessary.
Checking wear on cutting equipment
Check the chain daily for:
•
Check that the groove in the edge of the bar is clean.
Clean if necessary.
•
•
•
Visible cracks in rivets and links.
Whether the chain is stiff.
Whether rivets and links are badly worn.
We recommend you compare the existing chain with a new
chain to decide how badly the existing chain is worn.
•
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.
When the length of the cutting teeth has worn down to only 4
mm the chain must be replaced.
Chain drive sprocket
If the chain lubrication system is still not working after carrying
out the above checks and associated measures you should
contact your service agent.
The clutch drum is fitted with one of the following drive
sprockets:
Lubricating the bar tip sprocket
A Spur sprocket (the chain sprocket is welded on the drum)
B Rim sprocket (replaceable)
Lubricate the bar tip sprocket each time you refuel. Use the
special grease gun and a good quality bearing grease.
Regularly check the degree of wear on the drive sprocket.
Replace if wear is excessive. Replace the drive sprocket
whenever you replace the chain.
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SAFETY INSTRUCTIONS
Bar
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.
!
Check regularly:
•
Whether there are burrs on the edges of the bar. Remove
these with a file if necessary.
What is kickback?
•
•
Whether the groove in the bar has become badly worn.
Replace the bar if necessary.
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.
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.
Kickback always occurs in the cutting plane of the bar.
Normally the chain saw and bar are thrown backwards and
upwards towards the user. However, the chain saw may move
in a different direction depending on the way it was being used
when the kickback zone of the bar touched the object.
•
To prolong the life of the bar you should turn it over daily.
WARNING! Most chain saw accidents
happen when the chain touches the
operator.
Kickback only occurs if the kickback zone of the bar touches
an object.
!
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
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.
instructions.
Avoid situations where there is a risk of
kickback. See instructions under the
′
heading Machine s safety equipment.
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 minimises the effect of kickback and lets
you keep the chain saw under control.
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.
Do not let go of the handles!
English – 15
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SAFETY INSTRUCTIONS
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.
Cutting with the bottom edge of the bar, i.e. from the top of
the object downwards, is known as cutting on the pull
stroke. In this case the chain saw pulls itself towards the
tree and the front edge of the chain saw body rests
naturally on the trunk when cutting. Cutting on the pull
stroke gives the operator better control over the chain saw
and the position of the kickback zone.
Lack of concentration can lead to kickback if the kickback
zone of the bar accidentally touches a branch, nearby tree
or some other object.
8
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.
4
Never use the chain saw above shoulder height and try
not to cut with the tip of the bar.Never use the chain saw
one-handed!
WARNING! The risk of kickback is increased
if you use the wrong cutting equipment or a
chain that is not sharpened correctly.The
wrong combination of bar and chain can
increase the risk of kickback!
!
General safety precautions
•
Chain saws are designed solely for cutting wood.The only
accessories you may use with this engine unit are the
combinations of bars and chains we recommend in the
Technical data section.
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.
•
Never use the machine if you are tired, if you have drunk
alcohol, or if you are taking medication that could affect
your vision, your judgement or your co-ordination.
6
7
Always use a fast cutting speed, i.e. full throttle.
Take great care when you cut with the top edge of the bar,
i.e. when cutting from the underside of the object. This is
known as cutting on the push stroke. The chain tries to
push the chain saw back towards the user.
•
•
•
Wear personal protective equipment. See instructions
under the heading Personal protective equipment.
Never use a machine that has been modified in any way
from its original specification.
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.
Unless the user resists this pushing force there is a risk
that the chain saw will move so far backwards that only the
kickback zone of the bar is in contact with the tree, which
will lead to a kickback.
•
Never use any accessories other than those
recommended in this manual. See instructions under the
headings Cutting equipment and Technical data.
WARNING! The risk of accident is increased
if you use the wrong cutting equipment or a
chain that is not sharpened correctly. Using
the wrong combination of bar and chain can
increase the risk of accidents.
!
16 – English
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SAFETY INSTRUCTIONS
Starting
Fuel safety
WARNING! Long term inhalation of the
WARNING! The catalytic converter 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.
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.
WARNING! Fuel and fuel vapour are highly
flammable.Take care when handling fuel and
chain oil. Be aware of the risks of fire,
explosion and those associated with
inhalation.
The chain brake should be activated when starting (see
section on “Starting”). Do not drop start. This method is
very dangerous because you may lose control of the saw
(see section on “Starting”).
•
•
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 3 m from the refuelling point
before starting it.
•
•
Never start a chain saw unless the bar, chain and clutch
cover are fitted correctly. See instructions under the
heading Assembly.
Never start the machine indoors. Exhaust fumes can be
dangerous if inhaled.
•
Observe your surroundings and make sure that there is no
risk of people or animals coming into contact with the
cutting equipment.
•
Never start the machine:
1
If you have spilt fuel or chain oil on the machine.Wipe
off the spillage and allow remaining fuel to evaporate.
2
If you have spilt fuel on yourself or your clothes,
change your clothes. Wash any part of your body that
has come in contact with fuel. Use soap and water.
3
If the machine is leaking fuel.Check regularly for leaks
from the fuel cap and fuel lines.
Transport and storage
•
Place the chain saw on the ground and hold the rear
handle down with your right foot. Grasp the front handle
firmly using your left hand. Make sure the chain saw is
steady and the chain is not touching the ground or other
objects.Then grasp the starter handle with your right hand
and pull the starter cord. Never wrap the starter cord
around your hand
•
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.
The transport guard must always be fitted to the cutting
attachment when the machine is being transported or in
storage.
English – 17
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SAFETY INSTRUCTIONS
•
Take the utmost care when cutting through branches or
General working instructions
logs that are in tension. A log or branch that is in tension
can suddenly spring back into its natural position before or
after you cut it. If you stand on the wrong side or start
cutting in the wrong place it may strike you or your chain
saw, so that you lose control. Both situations could cause
serious injury.
WARNING! This section describes basic
safety rules for using a chain saw.This
information is never a substitute for
!
professional skills and experience. If you get
into a situation where you feel unsafe, stop
and seek expert advice. Contact your chain
saw dealer, service agent or an experienced
chain saw user. Do not attempt any task that
you feel unsure of!
Before using a chain saw you must understand the effects of
kickback and how to avoid them. See instructions under the
heading How to avoid kickback.
Before using a chain saw you must understand the difference
between cutting with the top and bottom edges of the bar.See
instructions under the heading How to avoid kickback.
•
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.
Basic safety rules
•
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.
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.
•
Never put a chain saw down while the engine is running
unless you have it in clear view and the chain brake is on.
Switch the engine off before leaving your chain saw for
any length of time.
•
Do not use the machine in bad weather, such as dense
fog, heavy rain, strong wind, intense cold, etc. Working in
bad weather is tiring and often brings added risks, such as
icy ground, unpredictable felling direction, etc.
•
Take great care when removing small branches and avoid
cutting bushes (i.e. cutting many small branches at the
same time). Small branches can be grabbed by the chain
and thrown back at you, causing serious injury.
Basic cutting technique
General
•
•
Always use full throttle when cutting!
Reduce the speed to idle after every cut (running the
engine for too long at full throttle without any load, i.e.
without any resistance from the chain during cutting, can
lead to serious engine damage).
•
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.
•
•
Cutting from above = Cutting on the pull stroke.
Cutting from below = Cutting on the push stroke.
Cutting on the push stroke increases the risk of kickback. See
instructions under the heading How to avoid kickback.
Terms
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.
18 – English
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SAFETY INSTRUCTIONS
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.
There are five important factors you should
consider before making a cut:
1
Make sure the cutting equipment will not jam in the cut.
2
Make sure the object you are cutting will not split.
If it is possible (can you turn the log?) stop cutting about 2/3
of the way through the log.
3
Make sure the chain will not strike the ground or any other
object during or after cutting.
Turn the log and finish the cut from the opposite side.
4
5
Is there a risk of kickback?
The log is supported at one end. There is a high risk that it
will split.
Do the conditions and surrounding terrain affect how
safely you can stand and move about?
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.
Start by cutting from below (about 1/3 of the way through).
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.
Finish by cutting from above so that the two cuts meet.
WARNING! 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.
!
The following instructions describe how to handle the
commonest situations you are likely to encounter when using
a chain saw.
The log is supported at both ends. There is a high risk that
the chain will jam.
Cutting
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.
English – 19
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SAFETY INSTRUCTIONS
Start by cutting from above (about 1/3 of the way through).
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
Finish by cutting from below so that the two cuts meet.
Limbing
When limbing thick branches you should use the same
approach as for cutting.
Cut difficult branches piece by piece.
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.
2
1
3
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.
WARNING! During critical felling operations,
hearing protectors should be lifted
immediately when sawing is completed so
that sounds and warning signals can be
heard.
Tree felling technique
!
WARNING! It takes a lot of experience to fell
a tree. Inexperienced users of chain saws
should not fell trees. Do not attempt any task
that you feel unsure of!
!
Clearing the trunk and preparing your retreat
Remove any branches that are in the way.To do this it is best
to work from the top down and keep the trunk between you
and the chain saw. Never limb above shoulder height.
Safe distance
The safe distance between a tree that is to be felled and
anyone else working nearby is at least 21/2 tree lengths.
Make sure that no-one else is in this ”risk zone” before or
during felling.
Remove any undergrowth from the base of the tree and check
the area for obstacles (stones, branches, holes, etc.) so that
you have a clear path of retreat when the tree starts to fall.
Your path of retreat should be roughly 135 degrees away from
the intended felling direction.
Felling direction
The aim is to fell the tree in a position where you can limb and
cross-cut the log as easily as possible.You want it to fall on
ground where you can stand and move about safely.The main
point to avoid is letting the tree fall onto another tree. See
instructions under the heading Freeing a tree that has fallen
badly.
20 – English
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SAFETY INSTRUCTIONS
Finish the felling cut parallel with the directional cut line so that
Felling
the distance between them is at least 1/10 of the trunk
diameter. The uncut section of the trunk is called the felling
hinge.
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 cuts you begin with the top cut. Stand
to the right of the tree and cut on the pull stroke.
The felling hinge controls the direction that the tree falls in.
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 the 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 3-5 cm (1.5-2 inches) 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.
Use full throttle and bring the bar and chain slowly into the
tree.Make sure the tree does not start to move in the opposite
direction to your intended felling direction. Drive a wedge or
breaking bar into the cut as soon as it is deep enough.
WARNING! Unless you have special training
we advise you not to fell trees with a
diameter larger than the bar length of your
saw!
!
English – 21
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SAFETY INSTRUCTIONS
Limbing
Freeing a tree that has fallen badly
Freeing a ”trapped tree”
WARNING! Most kickback accidents happen
during limbing! Pay close attention to the
position of the kickback zone of the bar
when you are limbing branches that are in
tension!
It is very dangerous to remove a trapped tree and there is high
accident risk.
!
The safest method is to use a winch.
•
•
Tractor-mounted
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.
Portable
Cutting trees and branches that are in tension
Preparations:
Keep the trunk between you and the chain saw as you move
along the trunk.
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).
Cutting the trunk into logs
See instructions under the heading Basic cutting technique.
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.
Make one or more cuts at or near the point of maximum
tension. Make as many cuts of sufficient depth as necessary
to reduce the tension and make the tree or branch break at
the point of maximum tension.
Never cut straight through a tree or branch that is in
tension!
22 – English
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WHAT IS WHAT?
Husqvarna 346XP/353
XXXX
XXXXXXX
Husqvarna AB
Huskvarna, SWEDEN
25
23
26
What is what on the chain saw?
1
2
3
4
5
6
7
8
9
Cylinder cover
16 Spike bumper
Front handle
17 Chain catcher (Catches chain if it jumps or breaks.)
18 Clutch cover
Front hand guard
Starter
19 Right hand guard (Protects right hand if chain breaks or
jumps.)
Chain oil tank
20 Throttle control
Starter handle
21 Throttle lock (Prevents accidental operation of throttle
control.)
Adjuster screws, carburettor
Choke control/Start throttle lock
Rear handle
22 Decompression valve (353)
23 Combination spanner
24 Chain tensioning screw
25 Operator’s manual (EPA)
26 Bar guard
10 Stop switch (Ignition on/off switch.)
11 Fuel tank
12 Muffler
13 Bar tip sprocket
14 Chain
27 Oil pump adjustment screw
28 Switch for heated handle (346XPG, 353G)
29 Warning decal
15 Bar
English – 23
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ASSEMBLY
Tension the chain by turning the chain tensioning screw
Fitting the bar and chain
clockwise using the combination spanner. The chain should
be tensioned until it does not sag from the underside of the
bar.
WARNING! Always wear gloves, when
working with the chain, in order to protect
your hands from injury.
!
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 nuts with the
combination spanner.
Remove the bar nuts and remove the clutch cover (chain
brake). Take off the transportation ring (A).
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.
NOTE!
Note: If clutch cover is difficult to remove, replace bar nuts,
engage brake and rerelease (an audible click will be heard if
released properly).
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. Tighten the bar nuts finger
tight.
24 – English
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FUEL HANDLING
Mixing
Fuel
•
Always mix the gasoline and oil in a clean container
intended for fuel.
CAUTION!The machine is equipped with a two-stroke engine
and must always been run using a mixture of gasoline and
two-stroke engine 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.
•
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.
WARNING! Always ensure there is adequate
ventilation when handling fuel.
!
Gasoline
•
This engine is certified to operate on unleaded
gasoline.
•
Use good quality unleaded gasoline.
•
•
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.
•
This engine is certified to operate on unleaded
gasoline.
•
•
The lowest octane recommended is 87. If you run the
engine on a lower octane than 87 it can result in knocking.
This gives rise to a high engine temperature, which can
result in serious engine damage.
The following applies to chain saws
with catalytic converters:
When working with continuous high revs (e.g. limbing) a
higher octane is recommended.
Gasoline
Two-stroke oil
Always use high grade unleaded gasoline (minimum 95
ROZ). 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.
•
For best results and performance use HUSQVARNA two-
stroke oil, which is specially formulated for our two-stroke
engines. Mixture 1:50 (2%).
•
•
Never use two-stroke oil intended for water-cooled
outboard engines, sometimes referred to as outboard oil.
Two-stroke oil
Never use oil intended for four-stroke engines.
For best results and performance use HUSQVARNA two-
stroke oil, which is specially formulated for our two-stroke
engines. Mixture 1:50 (2%).
Two-stroke
Gasoline,
litre
oil, litre
2% (1:50)
0,10
WARNING! The catalytic converter muffler
5
gets very hot during and after use.This also
applies during idling. Be aware of the fire
hazard, especially when working near
10
0,20
!
15
0,30
flammable substances and/or vapours.
20
0,40
US gallon
US fl. oz.
2 1/2
For additional information about fuels, see above.
1
2 1/2
5
6 1/2
12 7/8
English – 25
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FUEL HANDLING
Chain oil
Fuelling
•
The chain lubrication system is automatic and we
recommend the use of special oil (chain oil) with good
adhesion characteristics.
WARNING!Taking the following precautions,
will lessen the risk of fire:
!
Do not smoke or place hot objects near fuel.
Always shut off the engine before refuelling.
When refuelling, open the fuel cap slowly so
that any excess pressure is released gently.
Tighten the fuel cap carefully after refuelling.
Always move the machine away from the
refuelling area before starting.
WARNING! The catalytic converter 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.
•
•
•
•
In countries where no special chain oil is available, EP90
transmission oil can be used.
!
Never use waste oil. This results in damage to the oil
pump, the bar and the chain.
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.
It is important to use oil of the right grade (suitable
viscosity range) to suit the air temperature.
In temperatures below 0°C (32°F) some oils become too
viscous. This can overload the oil pump and result in
damage to the oil pump components.
•
Contact your service agent when choosing chain oil.
Min 3 m
(10ft)
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FUEL HANDLING
English – 27
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STARTING AND STOPPING
Warm engine
Starting and stopping
WARNING! Note the following before
starting:
!
Never start a chain saw unless the bar, chain
and all covers are fitted correctly. Otherwise
the clutch can come loose and cause
personal injuries.
Always move the machine away from the
refuelling area before starting.
Use the same procedure as for starting a cold engine but
without setting the choke control in the choke position. The
correct choke/start throttle setting is obtained by moving the
choke control to the choke position and then pushing it in
again.
Place the machine on firm ground. Make
sure you have a secure footing and that the
chain cannot touch anything.
Keep people and animals well away from the
working area.
Starting
Cold engine
Grip the front handle with your left hand. Hold the chain saw
on the ground by placing your right foot through the rear
handle. Pull the starter handle with your right hand and pull
out the starter cord slowly until you feel a resistance (as the
starter pawls engage) then pull firmly and rapidly.Never wrap
the starter cord around your hand
Starting: The chain brake should be activated when starting
the chain saw. Activate the chain brake by pushing the front
hand guard forwards.
Ignition; choke: Set the choke control in the choke position.
This should automatically set the stop switch to the start
position.
As the chain brake is still activated the engine must return to
idling speed as soon as possible by disengaging the throttel
latch in order to avoid unnecessery wear on the clutch
assembly.
Start throttle: The correct choke/start throttle setting is
obtained by moving the control to the choke position.
Push in the choke control as soon as the engine fire and make
repeated starting attempts. Immediately press and release
the throttle when the engine starts. That will disengage the
throttle latch.
If the machine is fitted with a decompression valve (A): Press
the valve to reduce the pressure in the cylinder and make
starting easier.You should always use the decompression
valve when starting the machine. Once the machine has
started the valve will automatically return to its original setting.
CAUTION! Do not pull the starter cord all the way out and do
not let go of the starter handle when the cord is fully extended.
This can damage the machine.
A
28 – English
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STARTING AND STOPPING
Pull the front hand guard towards the front handle.The chain
brake is now disengaged.Your saw is ready for use.
Stopping
Stop the engine by switching off the ignition.
English – 29
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MAINTENANCE
CAUTION! If the chain rotates while idling the T-screw
must be turned anti-clockwise until the chain stops.
Carburettor
Your Husqvarna product has been designed and
manufactured to specifications that reduce harmful
emissions. After the engine has used 8-10 tanks of fuel the
engine will be run-in.To ensure that it continues to run at peak
performance and to minimise harmful exhaust emissions after
the running-in period, ask your dealer/service workshop (who
will have a rev counter at their disposal) to adjust your
carburettor.
Rec. idle speed: 2700 rpm
WARNING! Contact your servicing dealer, if
the idle speed setting cannot be adjusted so
that the chain stops. Do not use the chain
saw until it has been properly adjusted or
repaired.
!
Fine adjustment
Function, Basic settings, Fine adjustment
When the machine has been ”run-in” the carburettor should
be finely adjusted. The fine adjustment should be carried
out by a qualified person. First adjust the L-jet, then the
idling screw T and then the H-jet.
WARNING! Do not start the chain saw unless
the bar, chain and clutch cover (chain brake)
are fitted, otherwise the clutch may come
loose and cause personal injury.
!
Conditions
•
Before any adjustments are made the air filter should be
clean and the cylinder cover fitted. Adjusting the
carburettor while a dirty air filter is in use will result in a
leaner mixture next time the filter is cleaned.This can give
rise to serious engine damage.
Function
•
The carburettor governs the engine’s speed via the
throttle control. Air and fuel are mixed in the carburettor.
The air/fuel mixture is adjustable. Correct adjustment is
essential to get the best performance from the machine.
•
•
Carefully turn the L and H needle to the mid point.
•
•
The setting of the carburetor means that the engine is
adepted to local conditions, for example, the climate,
altitude, fuel and the type of 2-stroke oil.
Do not attempt to adjust the L and H jets beyond
either stop as this could cause damage.
•
Now start the machine according to the starting
instructions and let it warm up for 10 minutes. CAUTION!
If the chain rotates while idling the T-screw must be
turned anti-clockwise until the chain stops.
The carburettor has three adjustment controls:
-
-
-
L = Low speed jet
H = High speed jet
•
Place the machine on a flat surface so that the bar points
away from you and so that the bar and chain do not come
into contact with the surface or other objects.
T = Idle adjustment screw
H
L
Low speed jet L
Turn the low speed jet L clockwise until it stops. If the engine
accelerates poorly or idles unevenly, turn the low speed jet L
anticlockwise until good acceleration and idling are achieved.
CAUTION! If the chain rotates while idling the T-screw
must be turned anti-clockwise until the chain stops.
Final setting of the idling speed T
Adjust the idle speed with the T-screw. If it is necessary to re-
adjust, turn theT-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
occors when the engine runs smoothly in every position. It
should also be good margin to the rpm when the chain starts
to rotate.
T
•
•
The L and H-jets are used to adjust the supply of fuel to
match the rate that air is admitted, which is controlled with
the throttle. If they are screwed clockwise the air/fuel ratio
becomes leaner (less fuel) and if they are turned anti-
clockwise the ratio becomes richer (more fuel). A lean
mixture gives a higher engine speed and a rich mixture
gives a lower engine speed.
WARNING! Contact your servicing dealer, if
the idle speed setting cannot be adjusted so
that the chain stops. Do not use the chain
saw until it has been properly adjusted or
repaired.
!
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.
High speed jet H
WARNING! The catalytic converter muffler
gets very hot during and after use.This also
applies during idling. Be aware of the fire
hazard, especially when working near
The high speed needle H influence the power of the machine.
A too lean adjusted high speed (high speed needle H turn too
much clockwise) gives overrevs and damages the engine. Do
not allow the engine to run at full speed for more than 10
seconds. Turn the high speed needle H counter-
!
flammable substances and/or vapours.
clockwiseuntil the stop. If the engine runs roughly, turn the
high speed needle slowly the minimum amount clockwise
until the engine runs smoothly. The high speed needle H is
correctly set when the saw “4-cycles” a little. If the machine
“whistles“ the setting is too lean. If there is too much exhaust
Basic settings and running in
The carburettor is set to its basic setting when test run at the
factory. The basic setting is richer than the optimum setting
and should be maintained for the first hours that the machine
is in use.The carburettor should then be finely adjusted. Fine
adjustment should be carried out by a suitably trained person.
30 – English
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MAINTENANCE
gas at the same time as the machine “4-cycles” much, the
•
Undo the screw in the centre of the pulley and remove the
setting is too rich. Turn the high speed needle H until the
setting sounds correct.
pulley. Insert and fasten a new starter cord to the pulley.
Wind approx. 3 turns of the starter cord onto the pulley.
Connect the pulley to the recoil spring so that the end of
the spring engages in the pulley.Fit the screw in the centre
of the pulley. Insert the starter cord through the hole in the
starter housing and the starter handle. Make a secure
knot in the end of the starter cord.
H
For optimum setting of the carburetor, contact a qualified
servicing dealer who has a revolution counter at his
disposal.
Correctly adjusted carburettor
When the carburettor 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 acceleration and could
suffer damage to the engine. If the L and H-jets are set too
rich it will lead to acceleration problems or too low a working
speed.
Tensioning the recoil spring
•
Hook the starter cord in the notch in the pulley and turn the
starter pulley about 2 turns clockwise.
Starter
CAUTION! Check that the pulley can be turned at least a
further 1/2 turn when the starter cord is pulled all the way
out.
WARNING! When the recoil spring is wound
up in the starter housing it is under tension
and can, if handled carelessly, pop out and
cause personal injury. Always be careful
when changing the recoil spring or the
starter cord. Always wear protective
goggles.
!
Changing a broken recoil spring
•
•
Lift off the pulley. See instructions under heading
Changing a broken or worn starter cord.
Changing a broken or worn starter cord
Remove the recoil spring from inside the pulley by tapping
the pulley lightly with its inside face downwards against a
work bench or the like. If the spring pops out during fitting,
wind it up again, working from the outside in towards
centre.
•
Loosen the screws that hold the starter against the
crankcase and remove the starter.
•
Lubricate the recoil spring with light oil. Fit the pulley and
tension the recoil spring.
•
Pull out the cord approx. 30 cm and hook it into the notch
in the rim of the pulley. Release the recoil spring by letting
the pulley rotate slowly backwards.
English – 31
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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 carburettor adjustment.
Wrong fuel mixture (too much oil).
A dirty air filter.
These factors cause deposits on the spark plug electrodes,
which may result in operating problems and starting
difficulties.
•
If the machine is low on power, difficult to start or runs
poorly at idle speed: always check the spark plug first
before taking any further action. If the spark plug is dirty,
clean it and check that the electrode gap is 0.5 mm
(0,020").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
Unnecessary wear to engine parts
Excessive fuel consumption.
CAUTION! Always use the recommended spark plug type!
Use of the wrong spark plug can damage the piston/cylinder.
Clean the air filter daily, or more often in demanding
conditions.
Muffler
•
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.
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.
•
The filter can be cleaned more thoroughly by washing it in
water and detergent.
Some mufflers are equipped with a special spark arrestor
mesh. If your machine has this type of muffler, you should
clean the mesh at least once a week.This is best done with a
wire brush.
CAUTION! The mesh must be replaced if it is damaged. If the
mesh is blocked the machine will overheat and this will cause
damage to the cylinder and piston. Never use a machine with
a muffler that is in poor condition.
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 muffler fitted with a catalytic converter greatly reduces the
concentration of hydrocarbons (HC), oxides of nitrogen (NO)
and aldehydes emitted with exhaust gases. However, it does
not cut down carbon monoxide (CO), which you cannot smell!
A HUSQVARNA chain saw can be equipped with different
types of air filter according to working conditions, weather,
season, etc. Contact your dealer for advice.
32 – English
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MAINTENANCE
Consequently, never work in an enclosed or badly ventilated
area.Good air circulation should always prevail when working
Cooling system
in snowy hollows, ravines or in confined conditions.
WARNING! The catalytic converter muffler
gets very hot during and after use.This also
applies during idling. Be aware of the fire
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
!
hazard, especially when working near
The cooling system consists of:
flammable substances and/or vapours.
1
2
3
4
5
Air intake on the starter.
Air guide plate.
Needle bearing lubrication
Fins on the flywheel.
Cooling fins on the cylinder.
Cylinder cover (directs cold air over the cylinder).
The clutch drum is fitted with one of the following drive
5
sprockets:
4
3
•
A Spur sprocket (the chain sprocket is welded on the
drum)
•
B Rim sprocket (replaceable)
2
1
Both versions have a needle bearing on the drive shaft, which
has to be greased regularly (once a week).
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! Use only high quality bearing grease or engine oil.
Adjustment of the oil pump
”Air Injection” centrifugal cleaning
Centrifugal cleaning means the following: All air to the
carburettor passes through the starter. Dirt and dust is
centrifuged out by the cooling fan.
The oil pump is adjustable. Adjustments are made by turning
the screw using a screwdriver or combination spanner. The
machine is supplied from the factory with the screw set to
position 2.Turning the screw clockwise will reduce the oil flow
and turning the screw anti-clockwise will increase the oil flow.
+ –
IMPORTANT! In order to maintain operation of the centrifugal
cleaning system it must be regularly maintained.
1
2
3
•
Clean the air intake to the starter, the fins on the flywheel,
the space around the flywheel, inlet pipe and carburettor
compartment.
WARNING! The engine must not be running
when making adjustments.
!
Recommended settings:
Bar 13"-15": Position 1
Bar 15"-18": Position 2
Bar 18"-20": Position 3
English – 33
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MAINTENANCE
°
°
Temperature -5 C (23 F) or colder:
Heated handles
(346XPG, 353G)
On models with the model code XPG/G both the front handle
bar and the rear handle are equipped with electrical heating
coils.These are supplied with electricity from a generator built
into the chain saw.
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.
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.
When the switch is pushed upwards, the heat is switched on.
When the switch is pushed downwards, the heat is switched
off.
Electrical carburettor heating
IMPORTANT! Any maintenance other than that described in
this manual must be carried out by your servicing dealer
(retailer).
(346XPG, 353G)
If this chain saw has the model code XPG/G then it is
equipped with an electrically heated carburettor. The
electrical heating prevents icing in the carburettor. A
thermostat regulates heating so that the carburettor always
has the correct working temperature.
Winter use
During cold weather and under powder snow conditions,
operating problems can arise due to:
•
•
Too low engine temperature.
Icing of the air filter and carburettor.
Special measures are therefore often required:
•
Partly mask the air inlet on the starter to increase the
working temperature of the engine.
°
°
Temperature 0 C (32 F) or colder:
The cylinder cover is designed so it can be adjusted for
running in cold weather. Twist the winter flap so that
preheated air from the cylinder can pass into the carburettor
space preventing icing of the air filter, etc.
34 – English
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MAINTENANCE
Below you will find some general maintenance
instructions.
Weekly maintenance
0,5 mm
2
3
4
1
Daily maintenance
3
2
1
4
6
7
8
5
6
5
1
Check that the vibration damping elements are not
damaged.
2
3
4
Lubricate the clutch drum bearing.
8
7
9
10
File off any burrs from the edges of the bar.
Clean the spark plug. Check that the electrode gap is 0.5
mm (0,020 inch).
5
Clean the fins on the flywheel. Check the starter and the
recoil spring.
1
2
Check the throttle trigger for smooth operation. If any
binding occurs or if engine fails to return to idle, the
machine should be taken to your dealer, before it is used
again. Also, be sure that the trigger cannot be pulled until
the throttle trigger lockout is depressed.
6
7
8
Clean the cooling fins on the cylinder.
Clean or replace the spark arrestor mesh in the muffler.
Clean the carburettor compartment.
Clean the chain brake and check that it operates safely.
Make sure that the chain catcher is undamaged, and
replace it if necessary.
Monthly maintenance
1
3
0,5 mm
3
4
Clean or replace the air filter as necessary. Check for
damage or holes.
8
9
The bar should be turned daily for more even wear. Check
the lubrication hole in the bar, to be sure it is not clogged.
Clean the bar groove. If the bar has a sprocket tip, this
should be lubricated.
1
2
Check the brake band on the chain brake for wear.
5
6
Check that the bar and chain are getting sufficient oil.
Check the clutch centre, clutch drum and clutch spring for
wear.
Sharpen the chain and check its tension and condition.
Check the drive sprocket for excessive wear and replace
if necessary.
3
4
Clean the outside of the carburettor.
7
Clean the air intake on the starter. Check the starter and
starter cord for wear or damage.
Check fuel hose for cracks or other damage. Change if
necessary.
8
9
Check that nuts and screws are tight.
5
6
7
8
9
Clean the inside of the fuel tank.
Clean the inside of the oil tank.
Check all cables and connections.
Change the spark plug.
Test the stop switch to be sure it shuts off the engine.
10 Check the cooling system on chain saws with catalytic
converters.
Change the air filter.
English – 35
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TECHNICAL DATA
Technical data
346XP
353
Engine
3
Cylinder volume, cu.in/cm
Cylinder bore, inch/mm
Stroke, inch/mm
Idle speed, rpm
2,75/45,0
1,65/42
1,28/32,5
2700
3,15/51,7
1,77/45
1,28/32,5
2700
Power, kW/ rpm
2,5/9600
2,4/9000
Ignition system
Manufacture
SEM
CD
SEM
CD
Type of ignition system
Spark plug
NGK BPMR 7A
NGK BPMR 7A
Champion RCJ 7Y
Champion RCJ 7Y
Electrode gap, inch/mm
Fuel and lubrication system
Manufacturer of carburettor
Carburettor type
0,02/0,5
0,02/0,5
Zama
Zama
C3-EL18
1,06/0,5
5-12
C3-EL18
1,06/0,5
5-12
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
0,59/0,28
Automatic
0,59/0,28
Automatic
Weight
Chain saw without bar or chain, empty
tanks, Lbs/kg
346XP: 10,6/4,8
353: 11,0/5,0
346XPG: 10,8/4,9
353G: 11,2/5,1
353 E-tech: 11,0/5,0
353G E-tech: 11,2/5,1
Chain/bar
Standard bar length, inch/cm
Recommended bar lengths, inch/cm
Usable cutting length, inches/cm
Chain speed at max. power, m/sec
Pitch, inch/mm
13"/33
13"/33
13-20"/33-50
12-19"/31-49
18,5
13-20"/33-50
12-19"/31-49
17,3
0,325/8,25
0,050/1,3
0,058/1,5
7
0,325/8,25
0,050/1,3
0,058/1,5
7
Thickness of drive links, inch/mm
Number of teeth on drive sprocket
36 – English
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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 346XP and 353. The combinations of
power head, bar and chain have been investigated 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.
Low kickback saw chain is a chain which has only met the kickback performance requirements of ANSI B 175.1 safety requirements
for gasoline powered chain saws when tested on the representative sample of chain saws below 3.8 cu. in. specified in ANSI 175.1.
We recommend that you as a replacement use the listed chains or "Low kickback saw chains" which are available at your dealer.
Bar
Chain
Length, inches Pitch, inch
Max nose radius
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
Husqvarna H30, Oregon 95VP
Husqvarna H25, Oregon
21BP/34LG or 34SL (not 13”)
Note: For the chains above you are free to choose between 0,050" and 0,058" gauge drive link for the corresponding bar, see the
table below.
0,058"/1,5mm
0,050"/1,3 mm
-
-
H25
-
21BP
20BP
34LG
33LG
34SL
33SL
H30
95VP
L
D
D
_
PITCH =
2
English – 37
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FEDERAL EMISSION CONTROL WARRANTY STATEMENT
WHAT IS COVERED
YOUR WARRANTY RIGHTS AND
OBLIGATIONS
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 &
Garden servicing dealer. 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.
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 emmission
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.
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.
DIAGNOSIS The 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.
′
MANUFACTURER S WARRANTY
COVERAGE
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 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.
WHAT IS NOT COVERED
All failures caused by abuse, neglect or improper
maintenance are not covered.
′
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
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.
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.
HOW TO FILE A CLAIM
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
WARRANTY COMMENCEMENT DATE
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.
The warranty period begins on the date small nonroad engine
is delivered.
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.
´®z+H4Q¶5{¨
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FEDERAL EMISSION CONTROL WARRANTY STATEMENT
EMISSION CONTROL WARRANTY PARTS
LIST
1
2
3
4
Carburetor and internal parts
Intake pipe, airfilter holder and carburetor bolts.
Airfilter and fuelfilter covered up to maintenance schedule.
Ignition System
1
2
Spark Plug, covered up to maintenance schedule
Ignition Module
5
Muffler with catalytic converter
MAINTENANCE STATEMENT
The owner is responsible for the performance of all required
maintenance, as defined in the operator’s manual.
English – 39
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1140204-95
´®z+H4Q¶5{¨
2003-10-30
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