Husqvarna 343O3 User manual

Operator’s manual
343O3
Please read the operator’s manual carefully and make sure you understand the instructions
before using the machine.
English

KEY T O SYMBOLS
2 – English
Symbols
W ARNING! The machine can be a
dangerous tool if used incorrectly or
carelessly, which can cause serious
or fatal injury to the operator or
others.It is extremely important that
you read and understand the
contents of the operator’s manual.
Please read the operator’s manual
carefully and make sure you
understand the instructions before
using the machine.
Always wear:
•A protective helmet where there
is a risk of falling objects
•Approved hearing protection
•Protective goggles or a visor
This product is in accordance with
applicable EC directives.
This machine is not electrically
insulated. If the machine
touches or comes close to high-
voltagepowerlinesitcouldlead
to deathor serious bodilyinjury.
Electricity can jump from one
point to another by arcing.The
higher the voltage, the greater
the distance electricity can
jump.Electricity can also travel
through branches and other
objects, especially if they are
wet.Always keep a distance of at least 10 m between the
machine and high-voltage power lines and/or any objects
that are touching them. If have to work within this safe
distance you should always contact the relevant power
company to make sure the power is switched off before
you start work.
This machine has a long reach.Make sure that no people
or animals come closer than 15 m when the machine is
running.
Always wear approved protective
gloves.
Wear sturdy, non-slip boots.
Other symbols/decals on the
machine refer to special certification requirements
for certain markets.
The engine is s witched off by moving
the stop switch to the stop position.
CAUTION! The stop switch
automatically returns to the start
position. In order to prevent
unintentional starting, the spark plug
cap must be removed from the spark plug when
assembling, checking and/or performing maintenance.
Always wear approved protective
gloves.
Regular cleaning is required.
Visual check.
Protective goggles or a visor must be
worn.
Filling with chain oil and adjusting oil
flow

CONTENTS
Contents
WARNING! Under no circumstances
may the design of the machine be
modified without the permission of
the manufacturer. Non-authorized
modifications and/or accessories can
result in serious personal injury or
the death of the operator or others.
WARNING! Long-term exposure to
noise can result in permanent hering
impairment. So always use approved
hearing protection.
WARNING! A hardvester machine is a
dangerous tool if used carelessly or
incorrectly and can cause serious,
even fatal injuries. It is extremely
important that you read and understand
the contents of this Operator’s Manual.
KEY TO SYMBOLS
Symbols ..................................................................
CONTENTS
Contents .................................................................
Note the following before starting: ..........................
INTRODUCTION
Dear Customer, ......................................................
WHAT IS WHAT?
What is what? .........................................................
GENERAL SAFETY PRECAUTIONS
Important ................................................................
Personal protective equipment ...............................
Machine’s safety equipment ...................................
ASSEMBLY
Shaft assembly ........................................................
Adjusting the harness .............................................
FUEL HANDLING
Fuel safety ..............................................................
Fuel ........................................................................
Fuelling ...................................................................
STARTING AND STOPPING
Check before starting .............................................
Starting and stopping .............................................
WORKING TECHNIQUES
General working instructions ..................................
MAINTENANCE
Carburettor .............................................................
Muffler ....................................................................
Cooling system .......................................................
Spark plug ..............................................................
Air filter ...................................................................
Maintenance schedule ...........................................
TECHNICAL DATA
Technical data ........................................................
EC-declaration of conformity ..................................
2
3
3
4
5
6
6
7
9
9
10
10
11
12
13
14
16
18
18
19
19
20
21
22
Note the following before
starting:
Please read the operator’s manual carefully.
Oil change ............................................................. 15
hook rubber change................................................ 15
English - 3

4 – English
INTR
ODUCTION
Dear Customer ,
Cong ratulations on your choice to buy a Husqvarna product! Husqvarna is based on a tradition that dates back to 1689,
when the Swedish King Karl XI ordered the construction of a factory on the banks of the Husqvarna River, for production
of muskets.The location was logical, since water power was harnessed from the Huskvarna River to create the water-
poweredplant.Duringthe morethan 300yearsof beeing,the Husqvarna factory hasproduced alot ofdifferentproducts,
from wood stoves to modern kitchen appliances, sewing machines, bicycles, motorcycles etc.In 1956, the first motor
driven lawn mowers appeared, followed by chain saws in 1959, and it is within this area Husqvarna is working today.
Today Husqvarna is one of the leading manufacturers in the world of forest and garden products, with quality as our
highest priority.The business concept is to develop, manufacture and market motor driven products for forestry and
gardening as well as for building and construction industry.Husqvarna ′ s aim is also to be in the front edge according to
ergonomics, usability, security and environmental protection.That is the reason why we have developed many different
features to provide our products within these areas.
We are convinced that you will appreciate with great satisfaction the quality and performance of our product for a very
long time to come.The purchase of one of our products gives you access to professional help with repairs and service
whenever this may be necessary. If the retailer who sells your machine is not one of our authorised dealers, ask for the
address of your nearest service workshop.
It is our wish that you will be satisfied with your product and that it will be your companion for a long time.Think of this
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 will sell this machine, make sure that the buyer will get
the operator ′ s manual.
Thank you for using a Husqvarna product.
Husqvarna AB has a policy of continuous product development and therefore reserves the right to modify the design and
appearance of products without prior notice.

WHAT IS WHAT?
What is what?
1 Hook
2 Shaft
3 Left handle
4 Throttle control
5 Stop swich
6 Throttle lock
7 Cylinder cover
8 Starter handle
9 Fuel tank
10 Air filter cover
14 Key nº 36
11 Combination screwdirver
12 Allen Key
13 Combination Spanner
1
2
3
4
65
7
10
8
9
11
12
13
14
15
15 Key nº 41
English - 5

GENERAL SAFETY PRECA UTIONS
6 – English
Impor tant Personal protective equipment
PR OTECTIVE HELMET ANDVISOR
HEARING PROTECTION
Wear hearing protection that provides adequate noise
reduction.
EYE PROTECTION
Blows from branches or objects that are thrown out by a
cutting attachment can damage the eyes.
GLOVES
Glovesshouldbewornwhennecessary,e.g.,when
cutting attachments.
IMPORTANT!
The machine isonly designed for harvesting olive and
fruits atached to the branches
Neveruseamachinethathasbeen inanyway
from its or
Neverusethemachineifyouaretired,ifyouhavedrunk
alcohol,orifyouaretakingmedicationthatcould ect
your vision, your judgement or your co-ordination.
Wear personal protective equipment.See instructions
under the heading Personal protective equipment.
Never use the machine in extreme weather conditions
such as severe cold, very hot and/or humid climates.
Neveruseamachinethatisfaulty.Carryoutthechecks,
maintenance and service instructions described in this
manual.Some maintenance and service measures
mustbecarried outbytrainedand specialists.
See instructions under the heading Maintenance.
All covers and guards m fore starting.
Ensure that the spark plug cap and ignition lead are
undamaged to avoid the risk of electric shock.
!
W ARNING!The ignition system of this
machine produces an electromagnetic
. ay
undersomecircumstancesinterferewith
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.
!
W ARNING! Running an engine in a
ly ventilated area can
result in death due to asphyxiation or
carbon monoxide poisoning.
!
W ARNING!Neverallowchildrento useor
be in the vicinity of the machine.As the
machine is equipped with a spring-
loadedstop switchand canbestarted 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.
IMPOR TANT!
A harvesting equipment is a dangerous tool if used
carelessly or
incorrectlyand cancause serious,evenfatal
injuries.It
isextremelyimportantthatyoureadand
understandthe
contents of this Operator’s Manual.
You must use approved personal protective equipment
whenever you use the machine.Personal protective
equipment cannot eliminate the risk of injury but it will
reducethedegreeofinjuryifanaccidentdoeshappen.
Askyourdealerforhelpinchoosingtherightequipment.
!
W ARNING!Listenoutforwarningsignals
or shouts when you are wearing hearing
protection.Always remove your hearing
protection as soon as the engine stops.

GENERAL SAFETY PRECA UTIONS
English
–
7
BOO TS
Wear sturdy, non-slip boots.
CLOTHING
Wear clothes made of a strong fabric and avoid loose
clothing that can catch on twigs and branches.Always
wear heavy, long pants.Do not wear jewellery, shorts
sandalsorgo barefoot.Securehair so itisaboveshoulder
level.
FIRST AID KIT
Always have a first aid kit nearby.
Mac hine ′ s safety equipment
This section descr ibes 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.
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 service workshop.
Thr ottle lockout
The throttle loc kout is designed to prevent accidental
operation of the throttle control.When you press the lock
(A)(i.e.when yougraspthehandle) itreleases thethrottle
control (B).When you release the handle the throttle
control and the throttle lockout both move back to their
original positions.This movement is controlled by two
independentreturnsprings.This arrangementmeansthat
the throttle control is automatically locked at the idle
setting.
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.
Check that the throttle control and throttle lockout move
freely and that the return springs work properly.
See instructions under the heading Start.Start the harvesting
equipment and apply full throttle.Release the throttle trigger
and check that the blades stop and remain stationary. If
the shaft move when the throttle trigger is in the idle
position thenthe carburettor idlesetting mustbe adjusted.
See instructions under the heading Maintenance.
IMPORTANT!
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.
!
W ARNING! Never use a machine with
faulty safety equipment.The machine’s
safety equipment must be checked and
maintained as described in this section.
If your machine fails any of these checks
contact your service agent to get it
repaired.
A
B

GENERAL SAFETY PRECA UTIONS
8 – English
Stop switch
Use the stop switch to s e.
Start the engine and make sure the engine stops when
you move the stopswitch to the stop setting.
Vibration damping system
Your machine is equipped with a vibration damping
system that is designed to minimize vibration and make
operation easier.
The machine′s vibration damping system reduces the
transfer of vibration between the engine unit/hardvesting
equipment and the machine′s handle unit.
er
Them isdesignedtokeepnoiselevels toa minimum
andto directexhaust fumesawayfromtheuser. A muffler fitted
with a catalytic converter is also designed to reduce
harmful exhaust gases.
In countries that have awarm and dry climate there is a
risk of fire. Wethere forfitecertain mufflerswith
a sparkarrestor mesh.Checkwhetherthemuffleronyour
For m very important that you follow the
instructions on checking, maintaining and servicingyour
machine.
Never use a machine that has a faultym r.
Regularly check that them
the machine.
If them y rk
arrestor mesh this must be cleaned regularly.A blocked
mesh will cause the engine toverheat and may lead to
serious damage.
!
WARNING! Over exposure 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 offeeling,tingling,
pricking,pain,loss of strength, changes
in skin colour or condition.These
symptoms normally appear in the
gers,hands or wrists.The risk
increases at low temperatures.
!
W r lytic
convertersget very hot during use and
remain sofor some time after stopping.
This also applies at idle speed. Contact
can result in burns to the skin.

STARTING UP
SHAFT ASSEMBLY
Introduce the shaft for the screwed area, and center with
the conical part of the machine axle.
Screw the shaft using the nut and then using the fixed
keys, tihgt them strongly.
HARNES ADJUSTMENT
Place the lugs in the hook of the harneses, then
introduce the lug in the towing hook of the machine
as showed in the pictures, then screw the security
nuts oon the lugs.
Take the strips on the harnes and suit it according
the user, after that put the harnes in your left shoulder,
take the machine and rise it up, them prove the
adjustment and the confort of the harnes, if it’s correct
unload the machine and proced to start the engine,
if it is not correct readjust the strips of the harnes
untill it suits the user
English - 9

FUEL HANDLING
10 – English
Fuel safety
Never start the machine:
1 If you have spilt fuel on it.Wipe o the spillage and
allow remaining fuel to evaporate.
2 If you have spilt fuel on yourself or your clothes,
changeyour clothes.Washany part ofyourbody 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
•Storeandtransportthemachineandfuelsothatthere
isnoriskofanyleakageorfumescominginto contact
with sparks or naked flames, for example, from
electrical machinery, electricmotors,electricalrelays/
switches or boilers.
•When storing and transporting fuel always use
approved containers intended for this purpose.
•When storing the machine for long periods the fuel
tank must be emptied.Contact your local petrol
station to find out where to dispose of excess fuel.
•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.
•Inordertopreventunintentionalstartingoftheengine,
the spark plug cap must always be removed during
long-term storage, if the machine is not under close
supervision and when performing all service
measures.
Fuel
CA UTION! The machine is equipped with a two-stroke
engine and must always been run using a mixture of
petrol and two-stroke engine oil.It is important to
accurately measure the amount of oil to be mixed to
ensure that thecorrect mixture isobtained.When mixing
small amounts of fuel, even small inaccuracies can
drastically aect the ratio of the mixture.
Petrol
CA UTION! Alwaysuseaqualitypetrol/oilmixtureatleast
90 octane (RON).If your machine is equipped with a
catalyticconverter(seechapteronTechnicaldata)always
use a good quality unleaded petrol/oil mixture.Leaded
petrol will destroy the catalytic converter.
Use low-emission petrol,also known asalkylate petrol, if
it is available.
•The lowest octane recommended is 90 (RON).If you
run the engine on a lower octane grade than 90 so-
called knocking can occur.This gives rise to a high
engine temperature, which can result in serious
engine damage.
•Whenworkingatcontinuoushighrevsahigheroctane
rating is recommended.
Two-stroke oil
•For best results and performance use HUSQVARNA
two-strokeengineoil,whichisspeciallyformulatedfor
our air-cooled two-stroke engines.
•Never use two-stroke oil intended for water-cooled
engines,sometimes referred toas outboardoil (rated
TCW).
•Never use oil intended for four-stroke engines.
•A poor oil quality and/or too high oil/fuel ratio may
jeopardise function and decrease the life time of
catalytic converters.
•Mixing ratio
1:50 (2%) with HUSQVARNA two-stroke oil.
1:33 (3%) with oils class JASO FB or ISO EGB
formulated for air-cooled, two-stroke engines.
!
WARNING!Takecarewhen handling fuel.
Bear in mind the risk of fire,explosion
and inhaling fumes.
!
WARNING! Fuel and fuel fumes are
highly inflammable and can cause
seriousinjurywheninhaled orallowedto
come in contact with the skin.For this
reason observe caution when handling
fuel and make sure there is adequate
ventilation.
Petrol,litre Two-stroke oil, litre
2% (1:50) 3% (1:33)
50,10 0,15
10 0,20 0,30
15 0,30 0,45
20 0,40 0,60

FUEL HANDLING
English – 11
Mixing
•Always mix the petrol and oil in a clean container
intended for fuel.
•Always start by filling half the amount of the petrol to
be used.Then add the entire amount of oil.Mix
(shake)thefuelmixture.Addtheremainingamountof
petrol.
•Mix (shake) the fuel mixture thoroughly before filling
the machine’s fuel tank.
•Do not mixmore than one month’s supply of fuelat a
time.
•If themachine is notused for sometime the fueltank
should be emptied and cleaned.
Fuelling
•Always use a fuel container with an anti-spill valve.
•Clean thearea around thefuel cap.Contamination in
the tank can cause operating problems.
•Ensure that the fuel is well mixed by shaking the
container before filling the tank.
!
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.
!
WARNING!Taking the following
precautions,will lessen the risk of fire:
Do not smoke or place hot objects near
fuel.
Always shut o the engine before
refuelling.
Always stopthe engine and letit cool for
a few minutes before refuelling.
Whenrefuelling,open thefuel capslowly
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.

STARTING AND STOPPING
12 – English
Check before starting
•Inspect the working area.Remove any objects that
could be thrown out.
•Check the rubbers on the pole.Never use cracked or
damaged rubbers, damaged rubbers can cause damage
on the branches.
•Check that the machine is in perfect working order.
Check that all nuts and screws are tight.
•Onlyuse themachine for thepurpose itwasintended
for.
•Make sure that the handle and safety features are in
goodworkingorder.Neveruseamachinethatlacksa
par s.
Starting and stopping
Starting
Primer bulb: Press the air purge repeatedly until fuel
bulb.The bulb need not be completely
Choke: Set the choke control in the choke position.
Hold the body of the machine on the ground using your
left hand(CAUTION! Notwith yourfoot!).Grip thestarter
handle, slowly pull out the cord with your right hand until
you feel some resistance (the starter pawls grip), now
quickly and powerfully pull the cord. Never twist the
starter cord around your hand.
!
WARNING!The complete clutch cover
and pole m fore the
machine is started,otherwise the clutch
can come loose and cause personal
injury.
Always move the machine away from the
refuelling area before starting.Place the
mac e. Ensure that
shaft and the pole cannot come into
contact with any object. Make sure no
unauthorised persons are in the working
area,otherwise there is a risk of serious
personal injury.The safety distance is 15
metres.
!
WARNING!When the engine is started
with the choke in either the choke or
start throttle positions the cutting
attachment will start to rotate
immediately.

STARTING AND STOPPING
English – 13
Repeat pulling the cord until the engine starts.When the
engine starts.return choke control torun position and
applyfull throttle;thethrottle will automaticallydisengage
from the start setting.
CAUTION! Donotpullthestartercordallthewayoutand
do not let go of the starter handle when the cord is fully
extended.This can damage the machine.
CAUTION! Do not put any part of your body in marked
area.Contact can result in burns to the skin, or electrical
shock if the spark plug cap has been damaged. Always
use gloves.Do not use a machine with damaged spark
plug cap.
Stopping
Stop the engine bys
CAUTION! The stop switch automatically returns to the
start position.In order to prevent unintentional starting,
thesparkplug capmustberemovedfrom thesparkplug
when assembling, checking and/or performing
maintenance.

WORKING TECHNIQUES
Before start working observe the tree and select the
optimum branches to be hooked, the best branches to
be hooked are the once that are flexible and able to
transmit the vibration more efficency in the area where
fruits are taken.
When you have selected the branch to be vibrated,
hook the selected branch making sure that the shaft
is perpendicular with the branch to avoid possible
movement of the hook on the surface of the branch.
When the hook is firmly secured on the branch, Hang
the machine between the branch and the harness.
When the machine is hanging, make a slight pressure
in the left hamdle in order to avoid accidental release or
accidental kick back of the hook.
Important
IMPORTANT!
During the harvesting fruits of a relevant size and
weight can hit the user and can be harmful if it is
necessary take the preventive actions needed to
IMPORTANT!
The mechanical parts of the machine can be affected
during the harvesting, if the harvested branch is not
flexible enough, this branches can cause a backward
movement causing an unbalance of the machine.
According to the morphology of the branch it is
possible to observe that the hook can be drived out
from the branch when it’s hooked from the superior
part. In this situation the branch must be hooked for
lower part.
IMPORTANT!
The most ideal labor with the machine is obtained by
1 or 2 acceleration process with a maximum duration
of 5 or 6 seconds. Once this operation is done it is
recomended to change the branch, with this process
the vibration frequency will be modified and as a
consequence the result of the harvesting procedure
will be improved. Acceleration times superior of
5 or 6 seconds will damage the surface of the branch.
There is no increase on the productivity if we keep
the machine with full gas at the same branch and in
the same point. In order to obtain a better
performance it is necessary to go throught he whole
different speed of the engine and change the
position of the hook different times.
With this proced we will get a maximum productivity
of the machine, and the branck and it’s surfface will
not be damage.
avoid injuries to the final user.
14 - English

MAINTENANCE INSTRUCCTIONS
OIL CHANGE OF THE REDUCER CASE
Oil change intervals:
· The first oil change has to be done between the
first 20 and 25 hour of work, approximately 1 week
of continuous work. This is the time needed for the
reducer group running in.
· The successives oil change has to be done
every 100 hours of work, approximately 1 month of
continuous work.
· Recomended oil: Husqvarna SYNTHETIC HT,
Quantity: 160 cc.
· This operation has to be done always in the
technical services authorised by Husqvarna.
PREVENTIVE MAINTENANCE
· At the end of the collection season it is
recommended to have a preventive maintenance
check done by the Authorised Technical Service.
HOOK RUBBERS CHANGE
Take off the 4 hook screws with a wrench. These screws
are placed in the marks.
Removethe damaged rubbers and take off the metal
nuts located inside of the rubber.
Introduce the nuts in the new rubbers and place them
in the hook.
Tighten the 4 screws again as in the 1st step.
English - 15

MAINTENANCE
English
–16
Carburettor
Your Husqvarna product has been designed and
manuf rmful
emissions.After the engine has used 8-10 tanks of fuel
theenginewillberun-in.Toensurethatitcontinuestorun
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.
Function
•The carburettor governs the engine’s speed via the
throttle control.Air and fuel are mixed in the
carburettor.The air/fuel mixtureis adjustable.Correct
adjustment is essential to get the best performance
from the machine.
•Adjusting the carburettor means that the engine is
adapted to local operating conditions, e.g.climate,
altitude, petrol and the type of 2-stroke oil.
•The carburettor has three adjustment controls:
L = Low speed jet
H = High speed jet
T = Idle adjustment screw
•The Land H-jets areused toadjust the supplyof fuel
to match the rate that air is admitted, which is
controlled with the throttle.If they are screwed
clockwisethe air/fuelratio becomesleaner (lessfuel)
and if they are turned anti-clockwise the ratio
becomes richer (more fuel).A lean mixture gives a
higher enginespeed and a rich mixturegives alower
engine speed.
•TheT-screw regulates the throttle setting at idle
speed.If theT-screw is turned clockwise this gives a
higher idle speed;turning it anti-clockwise gives a
lower idle speed.
Basic setting
•The basic carburettor settings are adjusted during
testing at the factory.The basic setting is richer than
the optimal setting and should be maintained for the
few hours the machine is in use.The carburettor
.Fine adjustment
should be carried out by a skilled technician.
CAUTION! If the shaft is moving when the engine is idling
the idle adjustment screwT should be turned anti-clockwise
until the shaft stopsmoving.
Rec. idle speed: 2700 rpm
Recommended max. speed: See theTechnical data section.
Fine adjustment
•When the machine has been ”run-in” the carburettor
shouldbe adjusted.The adjustmentshould
becarriedoutbya person.FirstadjusttheL-
jet, then the idling screwT and then the H-jet.
Conditions
•Beforeanyadjustmentsaremade,makesurethatthe
ov .If you
adjust the carb rty it will
cleaned.This can lead to serious engine damage.
•Carefully turn both jets, L and H, so that they are
midway between fully screwed in and fully screwed
out.
•DonotattempttoadjusttheLandHjetsbeyondeither
stop as this could damage the engine.
•Now start the machine according to the starting
instructions and let it warm up for 10 minutes.
!
WARNING!The complete clutch cover
and shaft m fore the
machine is started,otherwise the clutch
can come loose and cause personal
injury.
!
WARNING! If the idle speed cannot be
adjusted so that the harvesting equipment
stops,contact your dealer/service
workshop.Do not use the machine until
it has been correctly adjusted or
repaired.
CAUTION! If the shaft is moving when the engine is idling
the idle adjustment screwT should be turned anti-clockwise
until the shaft stopsmoving.
Rec. idle speed: 2700 rpm

MAINTENANCE
17
–
English
Low speed jet L
Tryto thehighestidlespeedbyturningthelowspeed
jet L clockwise then anti-clockwise.When the highest
speed has been found, turn the low speed jet L 1/4 turn
anti-clockwise.
CAUTION! If the shaft is moving when the engine is
idling the idle adjustment screwT should be turned
anti-clockwise until the cutting attachment stops.
Fine adjustment of the idle speed T
Adjustthe idlespeed usingthe idleadjustmentscrewT, if
it is necessary to readjust.First turn the idle adjustment
screwT clockwise until the cutting attachment starts to
rotate.Then turn the screw anticlockwiseuntil the cutting
attachment stops.The idle speed is correctly adjusted
when the engine will run smoothly in every position.The
idle speed should also be well below the speed at which
the cutting attachment starts to rotate.
High speed jet H
ects the engine power, speed,
temperatureandfuelconsumption.IfthehighspeedjetH
is set too lean (screwed in too far) the engine speed will
be too high and cause engine damage.Do not let the
engine run at full speed for more than 10 seconds.
ApplyfullthrottleandturnthehighspeedjetHveryslowly
clockwiseuntiltheengine slowsdown.Thenturnthe high
speed jet H very slowly anticlockwise until the engine
starts to run unevenly.Now turn the high speed jet H
slowly clockwise a little way until the engine runs
smoothly.
Note that the engine should not be under load when you
adjust the highspeed jet H.You should therefore remove
thecuttingattachment,nut,support and drivedisc
before adjusting the high speed jet H.
The high speed jet H is adjusted correctly when the
machine burbles a little.If the machine races then the
setting is too lean.If the engine produces a lot of smoke
and burbles a lot then the setting is too rich.
CAUTION! For optimum adjustment of the carburettor,
rvice workshop that has a
revolution counter at their disposal.
Correctly adjusted carburettor
When the carburettor is correctly adjusted the machine
will accelerate without hesitation and burble a little at
maximum speed.It is also important that the cutting
attachmentdoesnotrotateatidle.IfthelowspeedjetLis
set too lean it may cause star
acceleration.
If the high speed jet H is set too lean it will result in less
power, less performance, poor acceleration and/or
damage to the engine.
If both the L and H jets are set too rich it will results in
acceleration problems or too low a working speed.
!
WARNING! If the idle speed cannot be
adjusted so that the hardvesting equipment
stops,contact your dealer/service
workshop.Do not use the machine until
it has been correctly adjusted or
repaired.
H

MAINTENANCE
English–18
Muffl er
CA UTION! Some mufflers are fitted with a catalytic
converter.See chapter onTechnical data to see whether
your machine is fitted with a catalytic converter.
The muffler is designed to reduce the noise level and to
direct the exhaust gases away from the operator.The
exhaustgasesarehotandcancontainsparks,whichmay
cause fire if directed against dry and combustible
material.
Somemufflersare equippedwithaspecialsparkarrestor
mesh.Ifyourmachinehasthistypeofmuffler,youshould
clean the mesh at least once a week.This is best done
with a wire brush.
Onmufflerswithoutacatalyticconverterthemeshshould
be cleaned weekly, or replaced if necessary.On mufflers
fitted with a catalytic converter the mesh should be
checked,andifnecessarycleaned,monthly. If themesh
is damaged it should be replaced.
If the mesh is frequently b locked, this can be a sign that
the performance of the catalytic converter is impaired.
Contact your dealer to inspect the muffler.A blocked
mesh will cause the machine to overheat and result in
damage to the cylinder and piston.See also instructions
under the heading Maintenance.
CA UTION! Neveruseamachinewithadefectivemuffler.
Cooling system
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
The cooling system consists of:
1 Air intake on the starter.
2 Fins on the flywheel.
3 Cooling fins on the cylinder.
4 Cylinder cover (directs cold air over the cylinder).
Cleanthecoolingsystemwithabrushonceaweek,more
often in demandingconditions.A dirty or blocked cooling
system results inthe machine overheating whichcauses
damage to the piston and cylinder.
Spark plug
The spar k plug condition is influenced by:
!
WARNING! Mufflers fitted with catalytic
converters get very hot during use and
remain so for some time after stopping.
This also applies at idle speed.Contact
can result in burns to the skin.
Remember the risk of fire!
1
2
3
4

MAINTENANCE
19
–English
•Incorrect carburettor adjustment.
•An incorrect fuel mixture (too much or incorrect type
of oil).
•A dir r.
These factors cause deposits on the spark plug
electrodes, which may result in operating problems and
star s.
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 spa
rk plug is dirty,
clean it and check that the electrode gap is 0.6-0.7. mm.
The spark plug should be replaced after about a month in
operation or earlier if necessary.
CAUTION! Always use the recommended spark plug
type!Useofthewrongspark plug can damage thepiston/
cylinder.Check that the spark plug is fitted with a
suppressor.
lter
lter must be regularly cleaned to remove dust
and dirt in order toavoid:
•Carburettor malfunctions
•Starting problems
•Loss of engine power
•Unnecessarywear to engine parts.
•Excessive fuel consumption.
every 25 hours, or more regularly if
conditions are exceptionally dusty.
lter
Removetheair coverandtakeout the r.Wash it
clean inwarm, soapy water. ry
bef .
Anair that hasbeen in usefor
alongtimecannot be
cleaned completely.The must there for bereplaced
with a new one at regular intervals. A damaged air
must always be replaced. lter
should be soaked in oil.See instructions under the
r.
lter
Always useHUSQVARNA oil,art.no.5310092-48.
vent to make it spreadevenly
through the r.You shouldthereforeavoid skincontact.
over it.
Knead the plastic bag to distribute the oil.Squeez
e the
etheexcessbefore the tothemachine.Never
usecommonengineoil.This woulddrain throughthe
quite quickly and collect in the bottom.
0,6 - 0,7

English
–
20
MAINTENANCE
Maintenance schedule
The followingisalistofthemaintenancethatmustbeperformedonthemachine.Most oftheitemsaredescribedin the
Maintenance section.The user must only carry out the maintenance and service work described in this Operator’s
Manual.More extensive work must be carried out by an authorised service workshop.
Maintenance Daily
maintenance Weekly maintenance Monthly maintenance
Clean the outside of the machine. X
Make sure the throttle trigger lock and the throttle function
correctly from a safety point of view. X
Check that the stop switch works correctly . X
Check that the cutting attachment does not rotate at idle. X
Clean the air filter.Replace if necessary. X
Check that nuts and screws are tight. X
Check that there are no fuel leaks from the engine, tank or fuel
lines. X
Clean the area under the protective cover. X
Check the starter and starter cord. X
Check that the vibration damping elements are not damaged. X
Clean the outside of the spark plug.Remove it and check the
electrode gap. Adjust the gap to 0.5 mm or replace the spark
plug.Check that the spark plug is fitted with a suppressor. X
Clean the machine’s cooling system. X
Clean or replace the spark arrestor mesh on the muffler (only
applies to mufflers without a catalytic converter). X
Clean the outside of the carburettor and the space around it. X
Clean the fuel tank. X
Check the fuel filter from contamination and the fuel hose from
cracks or other defects. Replace if necessary. X
Check all cables and connections. X
Check the clutch, clutch springs and the clutch drumfor wear.
Replace if necessaryby an autorized service work shop. X
Replacethe spark plug. Check that the sparkplug is fitted witha
suppressor. X
Check and clean the spark arrestor mesh on themuffler (only
applies to mufflers fitted with a catalytic converter). X