Operator′s manual
325HS75
X-series
X-series
325HS99
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
Note the following before
starting:
KEY TO SYMBOLS
Symbols
Please read the operator’s manual carefully.
CONTENTS
Contents
WARNING! Long-term exposure to noise
can result in permanent hearing
impairment. So always use approved
hearing protection.
Note the following before starting:
INTRODUCTION
Dear Customer,
!
!
5
WHAT IS WHAT?
What is what?
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.
GENERAL SAFETY PRECAUTIONS
Important
Personal protective equipment
Machine′s safety equipment
FUEL HANDLING
Fuel safety
Fuel
WARNING! Incorrect or careless use of a
hedge trimmer can turn it into a
dangerous tool that can cause serious or
even fatal injury. It is extremely important
that you read and understand the
Fuelling
!
STARTING AND STOPPING
Check before starting
Starting and stopping
WORKING TECHNIQUES
General working instructions
MAINTENANCE
Carburettor
contents of this operator’s manual.
Muffler
Cooling system
Spark plug
Air filter
Gear housing
Cleaning and lubrication
Maintenance schedule
TECHNICAL DATA
Technical data
EC-declaration of conformity
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INTRODUCTION
Dear Customer,
Congratulations on your choice to buy a Husqvarna product! Husqvarna is based on a tradition that dates back to 1689,
when the Swedish King Karl XI ordered the construction of a factory on the banks of the Husqvarna River, for production
of muskets. The location was logical, since water power was harnessed from the Huskvarna River to create the water-
powered plant.During the more than 300 years of beeing, the Husqvarna factory has produced a lot of different products,
from wood stoves to modern kitchen appliances, sewing machines, bicycles, motorcycles etc. In 1956, the first motor
driven lawn mowers appeared, followed by chain saws in 1959, and it is within this area Husqvarna is working today.
Today Husqvarna is one of the leading manufacturers in the world of forest and garden products, with quality as our
highest priority. The business concept is to develop, manufacture and market motor driven products for forestry and
gardening as well as for building and construction industry. 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.
4 – English
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WHAT IS WHAT?
What is what?
1
2
3
4
5
6
7
8
9
Operator′s manual
Grease nipple
Gear housing
Blades
12 Choke control
13 Throttle lock
14 Throttle control
15 Stop switch
Hand guard
Front handle
Cylinder cover
Starter handle
Fuel cap
16 Air filter cover
17 Combination spanner
18 Allen key
19 Transport guard
20 Catcher (accessory)
21 Spark plug cap and spark plug
10 Fuel tank
11 Air purge
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GENERAL SAFETY PRECAUTIONS
Important
Personal protective equipment
IMPORTANT!
IMPORTANT!
The machine is only designed for cutting branches and
twigs.
Incorrect or careless use of a hedge trimmer can turn it
into a dangerous tool that can cause serious or even
fatal injury. It is extremely important that you read and
understand the contents of this operator’s manual.
Never use a machine that has been modified in any way
from its original specification.
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.
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.
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.
WARNING! Listen out for warning signals
or shouts when you are wearing hearing
protection. Always remove your hearing
protection as soon as the engine stops.
!
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.
HEARING PROTECTION
Wear hearing protection that provides adequate noise
reduction.
All covers and guards must be fitted before starting.
Ensure that the spark plug cap and ignition lead are
undamaged to avoid the risk of electric shock.
WARNING! The ignition system of this
machine produces an electromagnetic
!
field during operation.This field may
under some circumstances interfere with
pacemakers.To reduce the risk of
serious or fatal injury, we recommend
persons with pacemakers to consult
their physician and the pacemaker
manufacturer before operating this
machine.
EYE PROTECTION
Always wear approved eye protection. If you use a visor
then you must also wear approved protective goggles.
Approved protective goggles must comply with standard
ANSI Z87.1 in the USA or EN 166 in EU countries.
WARNING! Running an engine in a
confined or badly ventilated area can
result in death due to asphyxiation or
carbon monoxide poisoning.
!
GLOVES
Gloves should be worn when necessary, e.g., when fitting
cutting attachments.
WARNING! Never allow children to use or
be in the vicinity of the machine. As the
!
machine is equipped with a spring-
loaded stop switch and can be started by
low speed and force on the starter
handle, even small children under some
circumstances can produce the force
necessary to start the machine.This can
mean a risk of serious personal injury.
Therefore remove the spark plug cap
when the machine is not under close
supervision.
BOOTS
Wear sturdy, non-slip boots or shoes.
WARNING! Faulty blades can increase
the risk of accidents.
!
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GENERAL SAFETY PRECAUTIONS
CLOTHING
the throttle control is automatically locked at the idle
setting.
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
sandals or go barefoot.Secure hair so it is above shoulder
level.
FIRST AID KIT
Always have a first aid kit nearby.
Make sure the throttle control is locked at the idle setting
when the throttle lockout is released.
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.
Press the throttle lockout and make sure it returns to its
original position when you release it.
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.
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.
Check that the throttle control and throttle lockout move
freely and that the return springs work properly.
WARNING! 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.
See instructions under the heading Start. Start the hedge
trimmer and apply full throttle. Release the throttle trigger
and check that the blades stop and remain stationary. If
the blades move when the throttle trigger is in the idle
position then the carburettor idle setting must be adjusted.
See instructions under the heading Maintenance.
Throttle lockout
The throttle lockout is designed to prevent accidental
operation of the throttle control. When you press the lock
(A) (i.e.when you grasp the handle) it releases the throttle
control (B). When you release the handle the throttle
control and the throttle lockout both move back to their
original positions. This movement is controlled by two
independent return springs.This arrangement means that
English – 7
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GENERAL SAFETY PRECAUTIONS
Regularly check the vibration damping units for cracks or
deformation. Check that the vibration damping element is
undamaged and securely attached.
Stop switch
Use the stop switch to switch off the engine.
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.
Start the engine and make sure the engine stops when
you move the stop switch to the stop setting.
Hand guard
Muffler
The hand guard prevents hands from coming into contact
with the moving blades, for example, if the operator loses
grip on the front handle.
The muffler is designed to keep noise levels to a minimum
and to direct exhaust fumes away from the user. A muffler
fitted with a catalytic converter is also designed to reduce
harmful exhaust gases.
Check that the hand guard is fitted correctly.
Check that the hand guard is undamaged.
Vibration damping system
In countries that have a warm and dry climate there is a
significant risk of fire.We therefore fit certain mufflers with
a spark arrestor mesh. Check whether the muffler on your
machine is fitted with this kind of mesh.
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/cutting
equipment and the machine′s handle unit. The engine
body, including the blades, is suspended from the handle
unit by five springs.
For mufflers it is very important that you follow the
instructions on checking, maintaining and servicing your
machine.
8 – English
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GENERAL SAFETY PRECAUTIONS
Never use a machine that has a faulty muffler.
contact pressure is adjusted by turning the screws on the
underside of the bar clockwise as far as they will go.Then
turn the screws anticlockwise a 1/4 turn. Lock the screws
using the locking nut on the top of the bar. Check that the
screws are loose enough to allow the washers under the
screw heads to slide sideways.
Regularly check that the muffler is securely attached to
the machine.
When the blades are correctly adjusted the play between
the blades should be 0,2–0,4 mm, measured at the
screws.
The edges of the blades are too hard to be filed. Dull
blades should be sharpened using a grinder.
Replace the blades if they are bent or damaged.
If the muffler on your machine is fitted with a spark
arrestor mesh this must be cleaned regularly. A blocked
mesh will cause the engine to overheat and may lead to
serious damage.
Gear housing
The gear housing gets hot when the machine has been in
use. To avoid burning yourself do not touch the gear
housing.
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.
Assembly of the catcher (accessory)
Loosen the nuts on top of the bar. Align the bolts in the
holes on the catcher and fit the bolts. Adjust the blades’
contact pressure according to the instructions under the
heading Blades.
Remember the risk of fire!
WARNING! The inside of the muffler
contain chemicals that may be
!
carcinogenic. Avoid contact with these
elements in the event of a damaged
muffler.
WARNING! Bear in mind that:
!
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!
Blades
To ensure good cutting results it is important that the
contact pressure between the blades is correct. The
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FUEL HANDLING
Petrol
Fuel safety
Never start the machine:
1
2
If you have spilt fuel on it. Wipe off the spillage and
allow remaining fuel to evaporate.
CAUTION! Always use a quality petrol/oil mixture at least
90 octane (RON). If your machine is equipped with a
catalytic converter (see chapter onTechnical data) always
use a good quality unleaded petrol/oil mixture. Leaded
petrol will destroy the catalytic converter.
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.
Use low-emission petrol, also known as alkylate petrol, if
it is available.
Transport and storage
•
Store and transport the machine and fuel so that there
is no risk of any leakage or fumes coming into contact
with sparks or naked flames, for example, from
electrical machinery, electric motors, electrical relays/
switches or boilers.
•
•
When storing and transporting fuel always use
approved containers intended for this purpose.
•
•
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.
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.
When working at continuous high revs a higher octane
rating is recommended.
The transport guard must always be fitted to the
cutting attachment when the machine is being
transported or in storage.
Two-stroke oil
•
In order to prevent unintentional starting of the engine,
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.
•
For best results and performance use HUSQVARNA
two-stroke engine oil, which is specially formulated for
our air-cooled two-stroke engines.
•
Never use two-stroke oil intended for water-cooled
engines, sometimes referred to as outboard oil (rated
TCW).
WARNING!Take care when handling fuel.
Bear in mind the risk of fire, explosion
and inhaling fumes.
•
•
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.
Fuel
•
Mixing ratio
CAUTION! 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 the correct mixture is obtained. When mixing
small amounts of fuel, even small inaccuracies can
drastically affect the ratio of the mixture.
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.
Two-stroke oil, litre
Petrol, litre
2% (1:50)
0,10
3% (1:33)
0,15
WARNING! Fuel and fuel fumes are
5
highly inflammable and can cause
!
10
15
20
0,20
0,30
serious injury when inhaled or allowed to
come in contact with the skin. For this
reason observe caution when handling
fuel and make sure there is adequate
ventilation.
0,30
0,45
0,40
0,60
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FUEL HANDLING
Fuelling
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) the fuel mixture. Add the remaining amount of
petrol.
WARNING! Taking the following
precautions, will lessen the risk of fire:
!
•
Mix (shake) the fuel mixture thoroughly before filling
the machine’s fuel tank.
Do not smoke or place hot objects near
fuel.
Always shut off the engine before
refuelling.
Always stop the engine and let it cool for
a few minutes before refuelling.
When refuelling, open the fuel cap slowly
so that any excess pressure is released
gently.
Tighten the fuel cap carefully after
refuelling.
Always move the machine away from the
refuelling area before starting.
•
•
Do not mix more than one month’s supply of fuel at a
time.
•
•
Always use a fuel container with an anti-spill valve.
If the machine is not used for some time the fuel tank
should be emptied and cleaned.
Clean the area around the fuel 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.
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STARTING AND STOPPING
Check before starting
Starting and stopping
•
•
Inspect the working area. Remove any objects that
could be thrown out.
WARNING! The complete clutch cover
Check the cutting attachment. Never use blades that
are dull, cracked or damaged.
and gear housing must be fitted before
the machine is started, otherwise the
clutch may come loose and cause
personal injury.
!
Always move the machine about 3
metres from the refuelling position
before starting. Place the machine on a
firm surface. Remember that the blades
may start to move when the engine is
started. Make sure the blades cannot
come into contact with any object. Make
sure that no unauthorised persons are in
the working area, otherwise there is a
risk of serious personal injury.
•
•
•
•
•
Check that the machine is in perfect working order.
Check that all nuts and screws are tight.
Make sure the gear housing is lubricated correctly.
See instructions under the heading Gear housing.
Check that the cutting attachment always stops when
the engine is idling.
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.
Only use the machine for the purpose it was intended
for.
Make sure that the handle and safety features are in
good working order. Never use a machine that lacks a
part or has been modified outside its specifications.
Cold engine
Primer bulb: Press the air purge repeatedly until fuel
begins to fill the bulb. The bulb need not be completely
filled.
•
All covers must be correctly fitted and undamaged
before you start the machine.
Choke: Set the choke control in the choke position.
A
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STARTING AND STOPPING
Warm engine
Primer bulb: Press the air purge repeatedly until fuel
begins to fill the bulb. The bulb need not be completely
filled.
Starting
Hold the body of the machine on the ground using your
left hand (CAUTION! Not with your foot!). Grip the starter
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.
Push the choke control back to its original position as
soon as the engine fires, and continue trying to start until
the engine starts.
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.
Stopping
The engine is switched 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.
English – 13
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WORKING TECHNIQUES
•
Never work from a ladder, stool or any other raised
position that is not fully secured.
General working instructions
IMPORTANT!
This section takes up the basic safety precautions for
working with a hedge trimmer.
If you encounter a situation where you are uncertain
how to proceed you should ask an expert. Contact your
dealer or your service workshop.
Avoid all usage which you consider to be beyond your
capability.
WARNING! The machine can cause
serious personal injury. Read the safety
instructions carefully. Learn how to use
the machine.
•
Keep in mind that the operator is responsible for
accidents or hazards occuring to other people or their
property.
!
Safety instructions while working
WARNING! Cutting tool. Do not touch the
tool without first switching off the
engine.
!
Personal protection
•
•
Always ensure you have a safe and stable working
position.
Always use both hands to hold the machine. Hold the
machine in front of your body.
•
•
Wear personal protective equipment.See instructions
under the heading Personal protective equipment.
•
•
Use your left hand to control the throttle setting.
Always wear working clothes and heavy-duty long
trousers.
Make sure that your hands and feet do not come near
the cutting attachment when the engine is running.
•
•
Never wear loose clothing or jewellery.
•
When the engine is switched off, keep your hands and
feet away from the cutting attachment until it has
stopped completely.
Make sure your hair does not hang below shoulder
level.
Safety instructions regarding the
surroundings
•
•
Never allow children to use the machine.
Ensure that no-one comes closer than 15 m while you
are working.
•
Never allow anyone else to use the machine without
first ensuring that they have understood the contents
of the operator’s manual.
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WORKING TECHNIQUES
•
•
•
Watch out for stumps of branches that can be thrown
out during cutting.
Basic working techniques
•
When cutting the sides of a hedge, work from the
bottom upwards.When cutting horizontally, work from
right to left.
Do not cut too close to the ground. Stones and other
objects can be thrown out.
Check the working area for foreign objects such as
electricity cables, insects and animals, etc, or other
objects that could damage the cutting attachment,
such as metal items.
•
•
If any foreign object is hit or if vibrations occur stop the
machine immediately. Disconnect the HT lead from
the spark plug. Check that the machine is not
damaged. Repair any damage.
If anything jams in the blades while you are working,
switch off the engine and wait until it has stopped
completely before cleaning the blades.Disconnect the
HT lead from the spark plug.
Safety instructions after completing work
•
•
Adjust the throttle setting to suit the load.
When trimming a hedge the engine should always
face away from the hedge.
•
•
The transport guard should always be fitted to the
cutting attachment when the machine is not in use.
•
Hold the machine as close to your body as possible to
get the best balance.
Make sure the cutting attachment has stopped before
cleaning, carrying out repairs or an inspection.
Disconnect the HT lead from the spark plug.
•
Always wear heavy-duty gloves when repairing the
cutting attachment. This is extremely sharp and can
easily cause cuts.
•
•
Make sure that the tip does not touch the ground.
•
•
Store the machine out of reach of children.
Use only original spare parts for repairs.
Do not rush the work, but work steadily until all the
branches have been cut back cleanly.
English – 15
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MAINTENANCE
Basic setting
Carburettor
•
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
first few hours the machine is in use. The carburettor
should then be finely adjusted. Fine adjustment
should be carried out by a skilled technician.
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.
CAUTION! If the blades move while the engine is idling
the T screw should be turned anti-clockwise until they
stop.
WARNING! The complete clutch cover
and gear housing must be fitted before
the machine is started, otherwise the
clutch may come loose and cause
personal injury.
Rec. idle speed: 2700 rpm
!
Recommended max. speed: See the Technical data
section.
WARNING! If the idle speed cannot be
adjusted so that the cutting attachment
!
Function
stops, contact your dealer/service
workshop. Do not use the machine until
it has been correctly adjusted or
repaired.
•
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.
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.
•
•
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.
Conditions
The carburettor has three adjustment controls:
L = Low speed jet
•
Before any adjustments are made, make sure that the
air filter is clean and the air filter cover is fitted. If you
adjust the carburettor when the air filter is dirty it will
result in a leaner mixture when the filter is finally
cleaned. This can lead to serious engine damage.
H = High speed jet
T = Idle adjustment screw
•
Carefully turn both jets, L and H, so that they are
midway between fully screwed in and fully screwed
out.
H
L
T
•
•
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 blades move while the engine is idling
the T screw should be turned anti-clockwise until they
stop.
•
•
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.
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.
16 – English
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MAINTENANCE
be too high and cause engine damage. Do not let the
engine run at full speed for more than 10 seconds.
Low speed jet L
Try to find the highest idle speed by turning the low speed
jet L clockwise then anti-clockwise. When the highest
speed has been found, turn the low speed jet L 1/4 turn
anti-clockwise.
H
L
+ 1/4
Apply full throttle and turn the high speed jet H very slowly
clockwise until the engine slows down.Then turn the 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.
L
CAUTION! If the blades move while the engine is idling
the T screw should be turned anti-clockwise until they
stop.
Fine adjustment of the idle speedT
Note that the engine should not be under load when you
adjust 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.
Adjust the idle speed with the idle adjustment screw T, if
adjustment is necessary. First turn the idle adjustment
screw T clockwise until the blades start to move. Then
turn the idle adjustment screw T anticlockwise until the
blades stop.The idle speed is correctly adjusted when the
engine runs smoothly in every position.There should also
be a clear margin to the speed at which the blades start
to move. The blades must also remain stationary when
the choke control is in the start throttle position.
T
H
CAUTION! For optimum adjustment of the carburettor,
contact a qualified dealer/service workshop that has a
revolution counter at their disposal.
Correctly adjusted carburettor
IMPORTANT! If the idle speed cannot be adjusted so that
the cutting attachment stops, contact your dealer/service
workshop. Do not use the machine until it has been
correctly adjusted or repaired.
When the carburettor is correctly adjusted the machine
accelerates without hesitation and burbles a little at
maximum speed. It is also important that the blades do
not move when the engine is idling or when the choke
control is in the start position. If the low speed jet L is set
too lean it may cause starting difficulties and poor
acceleration.
High speed jet H
The high speed jet H affects the engine power, speed,
temperature and fuel consumption. If the high speed jet H
is set too lean (screwed in too far) the engine speed will
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.
English – 17
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MAINTENANCE
CAUTION! Never use a machine with a defective muffler.
Muffler
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.
!
CAUTION! Some mufflers are fitted with a catalytic
converter. See chapter on Technical data to see whether
your machine is fitted with a catalytic converter.
Remember the risk of fire!
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.
Cooling system
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
1
2
3
4
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.
The cooling system consists of:
1
2
3
4
Air intake on the starter.
Fins on the flywheel.
Cooling fins on the cylinder.
Cylinder cover (directs cold air over the cylinder).
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.
On mufflers without a catalytic converter the mesh should
be cleaned weekly, or replaced if necessary. On mufflers
fitted with a catalytic converter the mesh should be
checked, and if necessary cleaned, monthly. If the mesh
is damaged it should be replaced. If the mesh is
frequently blocked, this can be a sign that the
Spark plug
The spark plug condition is influenced by:
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.
•
•
Incorrect carburettor adjustment.
An incorrect fuel mixture (too much or incorrect type
of oil).
•
A dirty air filter.
These factors cause deposits on the spark plug
electrodes, which may result in operating problems and
starting difficulties.
If the machine is low on power, difficult to start or runs
poorly at idle speed: always check the spark plug first
18 – English
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MAINTENANCE
before taking any further action. If the spark plug is dirty,
If the machine is used in dusty conditions the air filter
should be soaked in oil. See instructions under the
heading Oiling the air filter.
clean it and check that the electrode gap is 0.5 mm. The
spark plug should be replaced after about a month in
operation or earlier if necessary.
Oiling the air filter
Always use HUSQVARNA filter oil, art. no. 531 00 92-48.
The filter oil contains a solvent to make it spread evenly
through the filter.You should therefore avoid skin contact.
Put the filter in a plastic bag and pour the filter oil over it.
Knead the plastic bag to distribute the oil. Squeeze the
excess oil out of the filter inside the plastic bag and pour
off the excess before fitting the filter to the machine.Never
use common engine oil.This would drain through the filter
quite quickly and collect in the bottom.
CAUTION! Always use the recommended spark plug
type! Use of the wrong spark plug can damage the piston/
cylinder. Check that the spark plug is fitted with a
suppressor.
Air filter
The air filter must be regularly cleaned to remove dust
and dirt in order to avoid:
•
•
•
•
•
Carburettor malfunctions
Starting problems
Gear housing
Loss of engine power
Unnecessary wear to engine parts.
Excessive fuel consumption.
There is a grease nipple and a plug for filling lubricant on
the gear housing. Use a grease gun to fill with grease.
This should be done after every 60 working hours. Use
Husqvarna’s special grease, no. 503 98 96-01.
Clean the filter every 25 hours, or more regularly if
conditions are exceptionally dusty.
CAUTION! The gear housing must not be filled
completely with grease. The grease expands as the
machine heats up during operation. If the gear housing
was completely filled with grease it could damage the
seals and lead to leakage of grease.
The grease in the bevel gear does not normally need to
be changed except if repairs are carried out.
Cleaning the air filter
Remove the air filter cover and take out the filter. Wash it
clean in warm, soapy water. Ensure that the filter is dry
before refitting it.
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.
English – 19
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MAINTENANCE
Cleaning and lubrication
Clean any resin and plant residue from the blades using
cleaning agent 531 00 75-13 (UL22) before and after
using the machine.
Lubricate the blade bars with special grease, part no. 531
00 75-12 (UL 21) before long periods of storage.
20 – English
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MAINTENANCE
Maintenance schedule
The following is a list of the maintenance that must be performed on the machine. Most of the items are described in the
Maintenance section. 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.
Daily
Weekly
Monthly
Maintenance
maintenance maintenance 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
X
X
Check that the stop switch works correctly.
Check that the blades do not move when the engine is idling or
when the choke is in the start throttle position.
Check that the blades are undamaged and show no signs of
cracking or other damage. Replace the blades if necessary.
X
X
X
Clean the air filter. Replace if necessary.
Check that the hand guard is not damaged. Replace the guard if
damaged.
Check that nuts and screws are tight.
X
X
X
X
Check that there are no fuel leaks from the engine, tank or fuel lines.
Check the starter and starter cord.
Check that the vibration damping elements are not damaged.
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
X
X
X
Clean or replace the spark arrestor mesh on the muffler (only
applies to mufflers without a catalytic converter).
Clean the outside of the carburettor and the space around it.
Fill the gear housing with grease. This should be carried out
approximately every 60 working hours.
Check that the screws that hold the blades together are correctly
tightened.
X
X
X
X
X
Clean the fuel tank.
Check the fuel filter from contamination and the fuel hose from
cracks or other defects. Replace if necessary.
Check all cables and connections.
Check the clutch, clutch springs and the clutch drum for wear.
Replace if necessary by an autorized service workshop.
Replace the spark plug. Check that the spark plug is fitted with a
suppressor.
X
X
X
Check and clean the spark arrestor mesh on the muffler (only
applies to mufflers fitted with a catalytic converter).
To reduce the fire hazard, clean dirt, leaves and surplus lubricant,
etc from the muffler and engine.
English – 21
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TECHNICAL DATA
Technical data
Technical data
325HS75
325HS99
Engine
Cylinder displacement, cm3
24,5
24,5
Cylinder bore, mm
34,0
34,0
Stroke, mm
27
27
Idle speed, rpm
2700
2700
Recommended max. speed, rpm
Max. engine output, acc. to ISO 8893
Catalytic converter muffler
Speed-regulated ignition system
Ignition system
10500-12500
0,7/9000
No
10500-12500
0,7/9000
No
Yes
Yes
Manufacturer/type of ignition system
Walbro MB
Walbro MB
Champion RCJ 7Y/
NGK BPM7A
Champion RCJ 7Y/
NGK BPM7A
Spark plug
Electrode gap, mm
0,5
0,5
Fuel and lubrication system
Manufacturer/type of carburettor
Fuel tank capacity, litre
Weight
Zama C1Q
0,5
Zama C1Q
0,5
Weight without fuel, kg
Noise emissions
5,7
6,0
(see note 1)
Sound power level, measured dB(A)
Sound power level, guaranteed LWA dB(A)
Sound levels
107
109
109
109
(see note 2)
Equivalent noise pressure level at the operator’s ear,
measured according to EN/ISO 11806 and ISO 7917,
dB(A), min./max.:
96
97
Vibration levels
Vibration levels at handles, measured according to EN/ISO
11806 and ISO 7916, m/s2
Idle speed, rear/front handles:
Max. speed, rear/front handles:
Blades
2,0/2,9
1,7/4,2
2,2/2,5
2,4/4,0
Length, mm
720
1000
4695
Blade speed, cuts/min
4695
Note 1: Noise emissions in the environment measured as sound power (LWA) in conformity with EC directive 2000/14/
EC.
Note 2: Equivalent sound pressure level is calculated as the time-weighted energy total for sound pressure levels under
various working conditions with the following time distribution: 1/2 idling and 1/2 max speed.
22 – English
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TECHNICAL DATA
EC-declaration of conformity (Applies to Europe only)
Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel: +46-36-146500, declare under sole responsibility that the hedge
trimmers Husqvarna 325HS75 and 325HS99 from 2002’s serial numbers and onwards (the year is clearly stated in plain
text on the type plate with subsequent serial number), are in conformity with the standards or or other normative
documents following the provisions in the COUNCIL’S DIRECTIVES:
- of June 22, 1998 ”relating to machinery” 98/37/EC, annex IIA.
- of May 3, 1989 ”relating to electromagnetic compatibility” 89/336/EEC, and applicable supplements.
- of May 8, 2000 ”relating to the noise emissions in the environment” 2000/14/EC. Conformity assessment according
to Annex V.
For information relating to noise emissions, see the chapter Technical data.The following standards have been applied:
EN292-2, CISPR 12:1997, EN774
SMP Svensk Maskinprovning AB, Fyrisborgsgatan 3, SE-754 50 Uppsala, Sweden, has carried out voluntary type
approval for Husqvarna AB. The certificates have the numbers: SEC/99/712, 01/094/003 - 325HS75, SEC/99/712, 01/
094/004 - 325HS99
Huskvarna 7 March, 2008
Michael Kullberg, Business manager
English – 23
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1151133-26
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2008-03-11
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