Oper ator ′ s manual
356BT
Please r ead the operator’s manual carefully and make sure you understand the instructions
X-series
before using the machine.
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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 waterpowered 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
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
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.
s manual.
s aim is also to be in the front edge according to
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Symbols
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.
Please read the operator’s manual
carefully and make sure you
understand the instructions before
using the machine.
Always wear:
• Hearing protection
• Approved eye protection
KEY T O SYMBOLS
Other symbols/decals on the mac hine refer to special
certification requirements for certain markets.
Switch off the engine b y moving the stop
switch to the STOP position before
carrying out any checks or
maintenance.
Always wear protective gloves.
Regular cleaning is required.
Visual check.
This product is in accordance
with applicable EC directives.
Gloves should be worn when
necessary.
The blower can forcibly throw
objects that can bounce back.
This can result in serious eye
injuries if the recommended
safety equipment is not used.
The blower operator
must ensure that no
people or animals come
closer than 15 metres.
When several operators
are working at the same site a safety distance of at least
15 metres must be in effect.
A breathing mask should be used
when there is a risk of dust.
Noise emission to the environment
according to the European
Community’s Directive. The
machine’s emission is specified in
chapter Technical data and on label.
Protective goggles or a visor must be
worn.
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CONTENTS
Contents
INTR ODUCTION
Dear Customer , ..................................................... 2
KEY TO SYMBOLS
Symbols ................................................................ 3
CONTENTS
Contents ............................................................... 4
Note the following before starting: ........................ 4
SAFETY INSTR UCTIONS
ersonal protective equipment ............................. 5
Machine ′ s safety equipment ................................. 5
Checking, maintaining and servicing the
s safety equipment ................................. 6
machine
General safety precautions ................................... 7
General working instructions ................................ 9
WHA T IS WHAT?
What is what on the b lower? ................................. 11
ASSEMBL Y
Assemb ling the blow pipe and control handle ....... 12
FUEL HANDLING
Fuel ....................................................................... 14
Fuelling ................................................................. 15
ARTING AND STOPPING
Star ting and stopping ............................................ 16
MAINTENANCE
Carb urettor ............................................................ 17
Muffler ................................................................... 17
Cooling system ..................................................... 18
Spark plug ............................................................. 18
Air filter .................................................................. 18
Maintenance schedule .......................................... 20
TECHNICAL D ATA
echnical data ....................................................... 21
EC-declaration of conformity ................................ 22
Note the f ollowing before starting:
Please read the oper ator’s manual carefully.
ARNING! Long-term exposure to noise
can result in permanent hearing
impairment. So always use approved
hearing protection.
ARNING! 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.
ARNING! A blower 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.
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.
The machine is only designed for blowing lawns,
pathways, asphalt roads and the like.
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SAFETY INSTR UCTIONS
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ersonal protective equipment
ARNING! You must use approved
personal protective equipment whenever
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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. Please read the operator’s
manual carefully and make sure you
understand the instructions before using
the machine.
ARNING! Listen out for warning signals
or shouts when you are wearing hearing
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protection. Always remove your hearing
protection as soon as the engine stops.
Gloves should be worn when necessary.
• Wear hearing protection that provides adequate noise
reduction.
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• 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.
• A breathing mask should be used when there is a risk
of dust.
• 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.
• 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. Blows from branches or objects that are
thrown can damage the eyes.
• Wear sturdy, non-slip boots.
ARNING! Never use a machine that has
faulty safety equipment! Carry out the
inspection, maintenance and service
routines listed in this section.
Stop s witch
Use the stop s witch to switch off the engine.
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SAFETY INSTR UCTIONS
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Vibration damping system
our machine is equipped with a vibration damping
system that is designed to minimize vibration and make
operation easier.
ARNING! Overexposure to vibration
can lead to circulatory damage or nerve
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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.
Muffl er
The m uffler is designed to keep noise levels to a minimum
and to direct exhaust fumes away from the user.
In countries that have a warm and dry climate there is a
significant risk of fire. Consequently, we have equipped
the muffler with a spark arrestor mesh mounted inside the
muffler.
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maintaining and servicing the machine’s safety
equipment.
ARNING!
Bear in mind that: Engine exhaust fumes
contain carbon monoxide, which can
cause carbon monoxide poisoning. For
this reason you should not start or run
the machine indoors, or anywhere that is
poorly ventilated.
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!
ARNING! The inside of the muffler
contain chemicals that may be
carcinogenic. Avoid contact with these
elements in the event of a damaged
muffler.
Chec king, maintaining and
servicing the machine
s safety
equipment
ARNING! All servicing and repair work
on the machine requires special training.
This is especially true of the machine
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.
Stop s witch
Start the engine and make sure the engine stops
when you move the stop switch to the stop setting.
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For mufflers it is very important that you follow the
instructions on checking, maintaining and servicing your
machine. See instructions under the heading Checking,
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SAFETY INSTR UCTIONS
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Vibration damping system
Check the vibration damping units regularly for cracks
or deformation. Replace them if damaged.
blocked mesh will cause the engine to overheat and
may lead to serious damage.
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• Check that the vibration damping element is
undamaged and securely attached.
Muffl er
Never use a machine that has a faulty muffler.
• Regularly check that the muffler is securely attached
to the machine.
• The muffler on your machine is equipped with a spark
arrestor mesh; this must be cleaned regularly. See the
heading Muffler in the Maintenance chapter. A
• Never use a muffler with a defective spark arrestor
mesh.
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.
General safety precautions
General
• 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 coordination.
• 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.
• 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.
• The blower operator must ensure that no people or
animals come closer than 15 metres. When several
operators are working at the same site a safety
distance of at least 15 metres must be in effect.
WARNING! This machine produces an
electromagnetic field during operation.
This field may under some
circumstances interfere with active or
passive medical implants. To reduce the
risk of serious or fatal injury, we
recommend persons with medical
implants to consult their physician and
the medical implant manufacturer before
operating this machine.
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SAFETY INSTRUCTIONS
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Starting
• Never start the machine indoors. Exhaust fumes can
be dangerous if inhaled.
• Observe the surroundings and ensure that no people
or animals can come into contact with the blower.
• Place the machine on the ground, press the machine
body against the ground with your left hand (NOTE!
Not your foot). Now grasp the starter handle with your
right hand and then pull quickly and firmly.
Fuel safety
• Always use a fuel container with an anti-spill valve.
• Never refuel the machine while the engine is running.
Always stop the engine and let it cool for a few minutes
before refuelling.
• Make sure there is plenty of ventilation when refuelling
or mixing fuel (petrol and 2-stroke oil).
• Avoid all skin contact with fuel. Fuel is a skin irritant
and may even cause skin changes.
• Move the machine at least 3 m from the refuelling
point before starting it.
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.
• 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.
• Secure the machine during transport.
WARNING! Take care when handling fuel.
Bear in mind the risk of fire, explosion
and inhaling fumes.
Adjusting the harness
WARNING! The harness must always be
worn when working with the machine.
Failure to do so means you will be unable
to manoeuvre safely and this can result
in injury to yourself or others.
A correctly adjusted harness and machine significantly
facilitates the work. Adjust the harness to give the best
working position.
• Never start the machine:
- If you have spilt fuel on it. Wipe off the spillage and
allow remaining fuel to evaporate.
- 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.
- If the machine is leaking fuel. Check regularly for leaks
from the fuel cap and fuel lines.
Transport and storage
• Store and transport the machine and fuel so that there
is no risk of any leakage or fumes coming into contact
8 – English
Tighten the side straps so that the pressure is evenly
distributed across the shoulders.
SAFETY INSTRUCTIONS
Place the hip strap over the hip and not too far down on
the stomach. Tighten the hip strap so that you feel the
weight of the blower resting on your hip.
General working instructions
IMPORTANT! This section considers basic safety rules
when working with blowers. 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.
Show consideration to persons in your surroundings by
avoiding using the machine at unsuitable times, such as
late in the evening or early in the morning. Read through
and follow the simple directions so that you disturb your
surroundings as little as possible.
• Use the blower with the lowest possible throttle. It is
seldom necessary to use full throttle, and many work
procedures can be done at half throttle. A lower
throttle means less noise and less dust, and it is also
easier to keep control over the rubbish collected
together/moved.
• Use a rake or a brush to release rubbish stuck to the
ground.
• Hold the opening of the blower as close to the ground
as possible.
• Observe your surroundings. Direct the blower away
from people, animals, play areas, and cars etc.
• Clean up afterwards. Make sure that you have not
blown rubbish into someone’s garden.
Basic safety rules
• The powerful currents of air can move objects at such
a speed that they can bounce back and cause serious
eye injuries.
• Do not direct the air jet towards people or animals.
• Stop the engine before assembling or dismantling
accessories or other parts.
• 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 can lead to
dangerous conditions, e.g. slippery surfaces.
• 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.
• Never put the machine down with the engine running
unless you have it in clear sight.
• Engine exhaust fumes contain carbon monoxide,
which can cause carbon monoxide poisoning. For this
reason you should not start or run the machine
indoors, or anywhere that is poorly ventilated.
• The blower must not be used while on a ladder or
scaffolding.
• No unauthorised persons or animals may be present
in the working area, which is 15 metres.
• CAUTION! Do not use the machine unless you are
able to call for help in the event of an accident.
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SAFETY INSTRUCTIONS
Basic working techniques
WARNING! Watch out for thrown objects.
Always wear eye protection. Stones,
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rubbish, etc. can be thrown up into the
eyes causing blindness or serious injury.
Keep unauthorised persons at a
distance. Children, animals, onlookers
and helpers should be kept outside the
safety zone of 15 m. Stop the machine
immediately if anyone approaches.
WARNING! Always stop the engine
before cleaning.
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• The speed of the air jet is regulated by means of the
throttle. Select the speed best suited for respective
tasks. You can set the throttle position using the ”stop
switch” and by doing so not need to hold your finger
on the throttle all the time you are using the blower.
Full throttle is obtained when the control is held back
fully.
• Check that the air intake is not blocked, for example,
by leaves or rubbish. A clogged air intake reduces the
machine’s blowing capacity and increases the
engine’s working temperature, which can result in
engine failure. Stop the engine and remove the object.
• Be aware of the wind direction. Work with the wind to
make your work easier.
• Using the blower to move large piles is time
consuming and creates unnecessary noise.
• When work is finished the machine should be stored
vertically.
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WHAT IS WHAT?
What is what on the blower?
1 Outer cover
2 Harness
3 Outlet pipe
4 Bellows with guard
5 Stop switch with throttle position setting
6 Control handle/Operating handle
7 Throttle control
8 Control pipe
9 Intermediate pipe
10 Blow pipe
11 Starter handle
12 Muffler
13 Spark plug
14 Air purge
15 Choke control
16 Fuel tank
17 Adjuster screws carburettor
18 Air filter
19 Combination spanner
20 Handlebar (Accessory)
21 Flat nozzle (Accessory)
22 Operator′s manual
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ASSEMBLY
Assembling the blow pipe and control handle
• Loosen the two screws on the fan’s outlet pipe and
remove the two wear ring halves located on the outlet
pipe.
• Place these on the pipe bend so that the guide on the
wear ring halves aligns with the slot on the pipe bend.
• Refit the pipe bend with the wear halves in the fan’s
outlet pipe. Make sure the holes in the wear ring
halves align with the screws that are used to secure
the halves in the pipe bend.
• Refit the bolts and tighten well. Check that the control
pipe is in the right position and can rotate equally in
both directions.
• Disassemble the knob from the control handle and
push the holder on to the control pipe.
• Assemble the knob and adjust position and angle to
achieve comfortable working position, tighten the
knob. Attach the cabling in the cover.
• Also pay attention to the stops located on the pipe
bend and the fan’s outlet pipe. Ensure that the stop on
the pipe bend comes in front of the stop on the outlet
pipe.
12 – English
Connect the intermediate pipe and air nozzle. Push the
pipes together and turn them so they lock in relation to
one another.
ASSEMBLY
Accessories
Handlebar
Disassemble the intermediate pipe. Disassemble the
knob from the holder and puch the holder on to the holder
pipe. Assemble the knob and tighten.
Assemble the intermediate pipe.
Flat nozzle
• If higher air speed is required, the round blow pipe is
replaced by the flat nozzle.
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FUEL HANDLING
Fuel
CAUTION! The machine is equipped with a two-stroke
engine and must always been run using a mixture of
petrol and two-stroke oil. It is important to accurately
measure the amount of oil to be mixed to ensure that the
correct mixture is obtained. When mixing small amounts
of fuel, even small inaccuracies can drastically affect the
ratio of the mixture.
WARNING! Always ensure there is
adequate ventilation when handling fuel.
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Petrol
CAUTION! Always use a good quality petrol/oil mixture (at
least 90 octane).
• The lowest recommended octane rating is 90. If you
run the engine on a petrol with a lower octane rating
than 90 this can cause knocking. This leads to an
increased engine temperature, which can result in
serious engine damage.
• When working at continuous high revs a higher octane
rating is recommended.
Two-stroke oil
• For best results and performance use HUSQVARNA
two-stroke oil, which is specially formulated for our
two-stroke engines. Mixture 1:50 (2%).
• If HUSQVARNA two-stroke oil is not available, you
may use another two-stroke oil of good quality that is
intended for air cooled engines. Contact your dealer
when selecting an oil. Mixing ratio 1:33 (3%).
• Never use two-stroke oil intended for water-cooled
outboard engines, sometimes referred to as outboard
oil.
• Never use oil intended for four-stroke engines.
Petrol, litre
5 0,10 0,15
10 0,20 0,30
15 0,30 0,45
20 0,40 0,60
Two-stroke oil, litre
2% (1:50) 3% (1:33)
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.
• Mix (shake) the fuel mixture thoroughly before filling
the machine’s fuel tank.
• Do not mix more than one month’s supply of fuel at a
time.
• If the machine is not used for some time the fuel tank
should be emptied and cleaned.
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FUEL HANDLING
Fuelling
WARNING! Taking the following
precautions, will lessen the risk of fire:
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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.
• Move the machine at least 3 m from the refuelling
point before starting it.
• 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.
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STARTING AND STOPPING
Starting and stopping
WARNING! Always move the machine
away from the refuelling area before
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starting. Place the machine on a flat
surface.
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.
The machine may only be started in its
complete design. If the machine is
started without all the guards fitted there
is a risk of personal injuries.
Cold engine
Ignition: Set the stop switch to the start position.
Start position is achieved by moving the stop switch
slightly backwards until the stop switch clicks into start
position.
Primer bulb: Press the air purge repeatedly until fuel
begins to fill the bulb. The bulb need not be completely
filled.
Warm engine
Use the same starting procedure as for a cold engine but
without setting the choke control in the choke position.
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.
It is not allowed to set the stop switch in full throttle
position.
Choke: Set the choke control in the choke position.
16 – English
Never twist the starter cord around your hand.
Repeat pulling the cord until the engine starts. When the
engine starts, return choke control to run position.
CAUTION! Do not pull the star ter 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 stopped by moving the stop switch to the
stop position.
MAINTENANCE
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.
Function
Adjustment of the idle speed
Before any adjustments are made, make sure that the air
filter is clean and the air filter cover is fitted.
Adjust the idle speed screew T clockwise respectively
anti-clockwise until an idle speed of 2300 rpm is reached.
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.
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
L
T
H
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 anticlockwise 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.
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 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.
Muffler
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 muffler is equipped with a special spark arrestor
mesh. The spark arrestor mesh should be cleaned once
a month. This is best done with a wire brush.
To remove the spark arrestor mesh proceed as follows:
Remove the screws to the capillary tube and exhaust
pipe.
English – 17
MAINTENANCE
Loosen the muffler’s 2 screws and remove the muffler.
5 Emergency cooling nozzle
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. Check that the nozzles
are not blocked.
Spark plug
Pull out the spark arrestor mesh and clean using a wire
brush. Replace the spark arrestor mesh if it is defective.
CAUTION! Never use a machine with a defective muffler.
WARNING! The muffler gets 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!
Cooling system
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
The cooling system consists of:
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2
3
5
1 Air intake on the underside of the blower.
2 Nozzle for cooling the cylinder
3 Cooling fins on the cylinder.
4 Cooling air conductor (directs cold air over the
cylinder).
The spark plug condition is influenced by:
• 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
before taking any further action. If the spark plug is dirty,
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.
CAUTION! Always use the recommended spark plug
type! Use of the wrong spark plug can damage the piston/
cylinder.
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.
18 – English
MAINTENANCE
Clean the filter every 40 hours, or more regularly if
conditions are exceptionally dusty.
The air filter is fitted in the air filter cowling.
Avoid contact with hot surfaces on muffler, cylinder etc.
Contact can result in burns to the skin.
Cleaning the air filter
Dismantle the outer cover with the help of the four
fasteners holding the outer cover.
Loosen the two fasteners holding the air filter cowling and
remove the filter. Wash the filter clean in warm, soapy
water.
Ensure that the filter is soaked in oil 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.
must always be replaced.
A damaged air filter
Oiling the air filter
Always use HUSQVARNA filter oil, art. no. 531 00 60-76.
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.
English – 19
MAINTENANCE
Maintenance schedule
Below you will find some general maintenance
instructions. If you need further information please
contact your service workshop.
Daily maintenance
1
2
356 BT
356 BF
Monthly maintenance
1
4
2
T
L
H
5
3
6
4
3
356 BF
356 BT
5
T
L
H
1 Clean the outside of the machine.
2 Check that the throttle control functions safely.
3 Check that the stop switch works correctly.
4 Check that nuts and screws are tight.
5 Check that there are no fuel leaks.
Weekly maintenance
1 Clean the air filter. Replace if necessar y.
2 Clean the outside of the spark plug. Remove and
check the electrode gap. Adjust the gap to 0.5 mm or
change the spark plug.
3 Clean the cooling system.
1 Check the fuel filter and the fuel hose. Replace if
necessary.
2 Check all cables and connections.
3 Replace the spark plug. Check that the spark plug is
fitted with a suppressor.
4 Check and clean the spark arrestor mesh on the
muffler.
5 Check that the vibration damping elements are not
damaged.
6 Clean the fuel tank.
20 – English
TECHNICAL DATA
Technical data
Technical data 356BT
Engine
Cylinder displacement, cm
Cylinder bore, mm 44
Stroke, mm 34
Idle speed, rpm 2300
Max. engine output, acc. to ISO 8893, kW/ rpm 2,4/6000
Catalytic converter muffler No
Speed-regulated ignition system Ye s
Ignition system
Spark plug NGK BPMR 7A
Electrode gap, mm 0,5
Fuel and lubrication system
Fuel tank capacity, litre 1,5
Weight
Weight without fuel, kg 10,4
Noise emissions
(see note 1)
Sound power level, measured dB(A) 99
Sound power level, guaranteed LWA dB(A) 100
Noise levels
(see note 2)
Equivalent sound pressure level at the operator’s ear, measured
according to EN15503 dB(A)
Vibration levels
(see note 3)
Equivalent vibration levels (a
EN15503, m/s
Fan performance
Max. air velocity vith standard nozzle, m/s: 79
Air flow with standard nozzle, m3/min 13,3
Max air velocity with flat nozzle (Accessory), m/s: 90
Air flow with flat nozzle (accessory), m3/min: 13,0
Note 1: Noise emissions in the environment measured as sound power (LWA) in conformity with EC directive 2000/14/
EC. Reported sound power level for the machine has been measured with the original cutting attachment that gives the
highest level. The difference between guaranteed and measured sound power is that the guaranteed sound power also
includes dispersion in the measurement result and the variations between different machines of the same model
according to Directive 2000/14/EC.
Note 2: The equivalent sound pressure level value is calculated with a work cycle of a duration of 1/7 for idling and 6/7
for racing. Reported data for equivalent sound pressure level for the machine has a typical statistical dispersion
(standard deviation) of 1 dB(A).
Note 3: The equivalent vibration level value is calculated with a work cycle of a duration of 1/7 for idling and 6/7 for racing.
Reported data for equivalent vibration level has a typical statistical dispersion (standard deviation) of 1 m/s
2
3
) at handles, measured according to
hv,eq
51,7
91
3,9
x
2
.
English – 21
TECHNICAL DATA
EC-declaration of conformity (Applies to Europe only)
Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel +46-36-146500, declares under sole responsibility that the blowers
Husqvarna 356 BT X-series with serial numbers dating 2009 and onwards (the year is clearly stated on the rating plate,
followed by the serial number), comply with the requirements of the COUNCIL’S DIRECTIVE:
- of May 17, 2006 "relating to machinery" 2006/42/EC
- of December 15, 2004 ”relating to electromagnetic compatibility” 2004/108/EC.
- 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:
EN ISO 12100-2/A1:2009, CISPR 12:2001, EN15503:2009
SMP Svensk Maskinprovning AB, Fyrisborgsgatan 3, SE-754 50 Uppsala, Sweden, has performed voluntary type
examination on behalf of Husqvarna AB. The certificates are numbered:
SEC/09/2203, 01/012/003
Huskvarna December 29, 2009
Bo Jonsson, Development manager (Authorized representative for Husqvarna AB and responsible for technical
documentation.)
22 – English
Original instructions
1153191-26
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´®z+U3,¶6;¨
2010-05-18
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