Husqvarna Blower 356BFX User Manual
Operator’s manual (EPA)  
356BT  
356BF  
X-SERIES  
X-SERIES  
Please read the operator’s manual carefully and make sure you  
understand the instructions before using the machine.  
English  
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KEY TO SYMBOLS  
Symbols  
Switch off the engine by moving the stop  
switch to the STOP position before carrying  
out any checks or maintenance.  
WARNING! The machine can be a  
dangerous tool if used incorrectly or  
carelessly, which can cause serious or fatal  
injury to the operator or others.  
Always wear protective gloves.  
Regular cleaning is required.  
Visual check.  
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  
Protective goggles or a visor must be worn.  
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 make  
sure that no bystanders or animals  
come nearer than 15 metres.  
Whenever several operators are  
working in the same work area, they should maintain a safe  
distance of at least 15 metres from one another.  
A breathing mask should be used when  
there is a risk of dust.  
Other symbols/decals on the machine refer to special  
certification requirements for certain markets.  
English – 3  
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CONTENTS  
Contents  
Note the following before starting:  
INTRODUCTION  
Please read the operator’s manual carefully.  
Dear customer! ............................................................  
KEY TO SYMBOLS  
2
3
Long-term exposure to noise can result in permanent hearing  
impairment. So always use approved hearing protection.  
Symbols .......................................................................  
CONTENTS  
WARNING! Under no circumstances may the  
Contents ......................................................................  
Note the following before starting: ................................  
SAFETY INSTRUCTIONS  
4
4
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.  
!
Personal protective equipment .....................................  
Machine′s safety equipment ........................................  
5
5
Checking, maintaining and servicing the machine′s  
Your warranty may not cover damage or  
liability caused by the use of non-authorized  
accessories or replacement parts.  
safety equipment ..........................................................  
6
7
8
General safety precautions ..........................................  
General working instructions .......................................  
WHAT IS WHAT?  
What is what on the blower? ........................................ 10  
ASSEMBLY  
WARNING! 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.  
!
Assembling the blow pipe and control handle .............. 11  
FUEL HANDLING  
Fuel .............................................................................. 12  
Fueling ......................................................................... 12  
STARTING AND STOPPING  
Starting and stopping ................................................... 13  
MAINTENANCE  
Carburetor .................................................................... 14  
Muffler .......................................................................... 15  
Cooling system ............................................................ 15  
Spark plug .................................................................... 15  
Air filter ......................................................................... 16  
Maintenance schedule ................................................. 17  
TECHNICAL DATA  
This engine label certifies that the product is certified in  
accordance with American exhaust emissions requirements  
EPA Ph II and Californian exhaust and evaporative emissions  
requirements CARB Tier III. The Emissions Compliance  
Period referred to on the emissions compliance label  
indicates the number of operating hours for which the engine  
has shown to meet Federal and Californian emission  
requirements.  
Technical data .............................................................. 18  
FEDERAL AND CALIFORNIA EMISSIONS  
CONTROL WARRANTY STATEMENT  
Category C = 50 hours, B = 125 hours, and A = 300 hours.  
YOUR WARRANTY RIGHTS AND OBLIGATIONS ..... 19  
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.  
4 – English  
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SAFETY INSTRUCTIONS  
•
A breathing mask should be used when there is a risk of  
dust.  
Personal protective equipment  
WARNING!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. Please read  
the operator’s manual carefully and make  
sure you understand the instructions before  
using the machine.  
•
Always have a first aid kit nearby.  
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.  
!
′
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.  
•
•
Gloves should be worn when necessary.  
WARNING! Never use a machine that has  
faulty safety equipment! Carry out the  
inspection, maintenance and service  
routines listed in this section.  
!
Wear hearing protection that provides adequate noise  
reduction.  
Stop switch  
Use the stop switch to switch off the engine.  
•
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.  
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.  
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SAFETY INSTRUCTIONS  
Vibration damping system  
WARNING! The inside of the muffler contain  
chemicals that may be carcinogenic. Avoid  
contact with these elements in the event of a  
damaged muffler.  
Your machine is equipped with a vibration damping system  
that is designed to reduce vibration and make operation  
easier.  
!
Checking,maintaining and servicing  
′
the machine s safety equipment  
WARNING! All servicing and repair work on  
the machine requires special training.This is  
!
′
especially true of the machine s safety  
WARNING! Overexposure to vibration can  
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.  
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.  
Stop switch  
•
Start the engine and make sure the engine stops when  
you move the stop switch to the stop setting.  
Muffler  
The muffler is designed to keep noise levels to a minimum  
and to direct exhaust fumes away from the user.  
Vibration damping system  
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 screen mounted inside the  
muffler.  
•
Check the vibration damping units regularly for cracks or  
deformation. Replace them if damaged.  
For mufflers it is very important that you follow the instructions  
on checking, maintaining and servicing your machine. See  
instructions under the heading Checking, maintaining and  
servicing the machine’s safety equipment.  
•
Check that the vibration damping element is undamaged  
and securely attached.  
WARNING!  
Muffler  
!
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.  
•
Never use a machine that has a faulty muffler.  
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!  
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SAFETY INSTRUCTIONS  
•
Regularly check that the muffler is securely attached to  
the machine.  
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.  
•
The muffler on your machine is equipped with a spark  
arrestor screen; this must be cleaned regularly. See the  
heading Muffler in the Maintenance chapter. A blocked  
screen will cause the engine to overheat and may lead to  
serious damage.  
Fuel safety  
•
Never use a muffler with a defective spark arrestor  
screen.  
•
•
Always use a fuel container with an anti-spill valve.  
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.  
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 (gasoline and 2-stroke oil).  
Avoid all skin contact with fuel. Fuel is a skin irritant and  
may even cause skin changes.  
General safety precautions  
Move the machine at least 10 ft (3 m) from the refuelling  
point before starting it.  
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 co-ordination.  
•
•
•
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.  
•
Never start the machine:  
- If you have spilled fuel on it.Wipe off the spillage and allow  
remaining fuel to evaporate.  
- If you have spilled fuel on yourself or your clothes, change  
your clothes. Wash any part of your body that has come in  
contact with fuel. Use soap and water.  
•
•
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.  
- If the machine is leaking fuel. Check regularly for leaks  
from the fuel cap and fuel lines.  
The blower operator must make sure that no bystanders  
or animals come nearer than 15 metres. Whenever  
several operators are working in the same work area, they  
should maintain a safe distance of at least 15 metres from  
one another.  
English – 7  
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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.  
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.  
When storing the machine for long periods the fuel tank  
must be emptied.Contact your local gas 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.  
General working instructions  
WARNING! Take care when handling fuel.  
Bear in mind the risk of fire, explosion and  
inhaling fumes.  
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.  
!
Adjusting the harness  
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.  
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.  
!
•
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.  
A correctly adjusted harness and machine significantly  
facilitates the work. Adjust the harness to give the best  
working position.  
•
•
•
•
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.  
Tighten the side straps so that the pressure is evenly  
distributed across the shoulders.  
8 – English  
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SAFETY INSTRUCTIONS  
Basic safety rules  
Basic working techniques  
WARNING! Watch out for thrown objects.  
Always wear eye protection. Stones,  
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.  
!
•
•
No unauthorised persons or animals may be present in  
the working area, which is 15 metres.  
The powerful currents of air can move objects at such a  
speed that they can bounce back and cause serious eye  
injuries.  
WARNING! Always stop the engine before  
cleaning.  
!
•
The speed of the air jet is regulated by means of the  
throttle. Select the speed best suited for respective tasks.  
(356 BT  
) You can set the throttle position using  
X-SERIES  
•
•
Do not direct the air jet towards people or animals.  
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.  
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.  
•
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.  
•
•
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.  
•
•
•
Be aware of the wind direction. Work with the wind to  
make your work easier.  
•
The blower must not be used while on a ladder or  
scaffolding.  
Using the blower to move large piles is time consuming  
and creates unnecessary noise.  
When work is finished the machine should be stored  
vertically.  
•
CAUTION! Do not use the machine unless you are able to  
call for help in the event of an accident.  
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WHAT IS WHAT?  
What is what on the blower?  
1
2
3
4
5
6
7
8
9
Outer cover  
12 Muffler  
Harness  
13 Spark plug  
14 Air purge  
15 Choke control  
16 Fuel tank  
Outlet pipe  
Bellows with guard  
Stop switch with throttle position setting  
Control handle/Operating handle  
Throttle control (356 BT)  
Control pipe  
17 Adjuster screws carburetor  
18 Air filter  
19 Combination spanner  
20 Handlebar (Accessory)  
21 Flat nozzle (Accessory)  
22 Operator’s manual (EPA)  
Intermediate pipe  
10 Blow pipe  
11 Starter handle  
10 – English  
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ASSEMBLY  
•
Disassemble the knob from the control handle and push  
the holder on to the control pipe.  
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.  
•
Assemble the knob and adjust position and angle to  
achieve comfortable working position, tighten the knob.  
Attach the cabling in the cover.  
•
•
Place these on the pipe bend so that the guide on the  
wear ring halves aligns with the slot on the pipe bend.  
Connect the intermediate pipe and air nozzle. Push the pipes  
together and turn them so they lock in relation to one another.  
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.  
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.  
•
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.  
Assemble the intermediate pipe.  
•
Refit the bolts and tighten well.Check that the control pipe  
is in the right position and can rotate equally in both  
directions.  
Flat nozzle  
•
If higher air speed is required, the round blow pipe is  
replaced by the flat nozzle.  
English – 11  
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FUEL HANDLING  
Mixing  
Fuel  
•
Always mix the gasoline and oil in a clean container  
intended for fuel.  
CAUTION!The machine is equipped with a two-stroke engine  
and must always been run using a mixture of gasoline and  
two-stroke engine oil. It is important to accurately measure  
the amount of oil to be mixed to ensure that the correct  
mixture is obtained.When mixing small amounts of fuel, even  
small inaccuracies can drastically affect the ratio of the  
mixture.  
•
Always start by filling half the amount of the gasoline to be  
used. Then add the entire amount of oil. Mix (shake) the  
fuel mixture. Add the remaining amount of gasoline.  
•
Mix (shake) the fuel mixture thoroughly before filling the  
machine’s fuel tank.  
WARNING! Always ensure there is adequate  
ventilation when handling fuel.  
!
Gasoline  
•
•
Do not mix more than one month’s supply of fuel at a time.  
CAUTION! Always use high grade oil mixed gasoline  
(minimum 87 RON).  
If the machine is not used for some time the fuel tank  
should be emptied and cleaned.  
•
This engine is certified to operate on unleaded  
gasoline.  
Fueling  
•
•
This engine is certified to operate on unleaded  
gasoline.  
The lowest recommended octane rating is 87. If you run  
the engine on lower octane rating than 87 so-called  
“knocking“ can occur. This leads to an increased engine  
temperature, which can result in a serious engine  
breakdown.  
WARNING!Taking the following precautions,  
will lessen the risk of fire:  
!
Do not smoke or place hot objects near fuel.  
Always shut off the engine before refuelling.  
•
When working at continuous high revs a higher octane  
rating is recommended.  
Always stop the engine and let it cool for a  
few minutes before refuelling.  
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%).  
When refuelling, open the fuel cap slowly so  
that any excess pressure is released gently.  
Tighten the fuel cap carefully after refuelling.  
•
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.  
Always move the machine away from the  
refuelling area before starting.  
•
Move the machine at least 10 ft (3 m) from the refuelling  
point before starting it.  
•
•
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.  
Two-stroke oil, litre  
Gasoline, litre  
2% (1:50)  
5
0,10  
10  
0,43/0,20  
0,30  
15  
•
•
Clean the area around the fuel cap. Contamination in the  
tank can cause operating problems.  
20  
0,40  
US gallon  
US fl. oz.  
2 1/2  
Ensure that the fuel is well mixed by shaking the container  
before filling the tank.  
1
2 1/2  
5
6 1/2  
12 7/8  
12 – English  
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STARTING AND STOPPING  
Starting  
Starting and stopping  
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.  
WARNING! Always move the machine away  
from the refuelling area before 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.  
Never wrap the starter cord around your hand  
Cold engine  
Repeat pulling the cord until the engine starts. When the  
engine starts, return choke control to run position.  
Ignition: Set the stop switch to the start position.  
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.  
Start position is achieved by moving the stop switch slightly  
backwards (356BT) or downwards (356BF) until the stop  
switch clicks into start position.  
Stopping  
The engine is stopped by moving the stop switch to the stop  
position.  
It is not allowed to set the stop switch in full throttle position.  
Choke: Set the choke control in the choke 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.  
English – 13  
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MAINTENANCE  
Conditions  
Carburetor  
•
Before any adjustments are made, make sure that the air  
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.  
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.  
•
•
•
Carefully turn both jets, L and H, so that they are midway  
between fully screwed in and fully screwed out.  
Do not attempt to adjust the L and H jets beyond either  
stop as this could cause damage.  
Function  
Now start the machine according to the starting  
instructions and let it warm up for 10 minutes.  
Low speed jet L  
The carburetor governs the engine’s speed via the throttle  
control. Air and fuel are mixed in the carburetor. The air/fuel  
mixture is adjustable. Correct adjustment is essential to get  
the best performance from the machine.  
If the engine run unstable on idle, adjest the L jet clockwise  
respectively anticlockwise until the engine runs smoothly.  
The setting of the carburetor means that the engine is  
adapted to local conditions, for example, the climate, altitude,  
fuel and the type of 2-stroke oil.  
The carburetor has three adjustment controls:  
•
•
•
L = Low speed jet  
H = High speed jet  
Fine adjustment of the idle speedT  
T = Idle adjustment screw  
Adjust the idle speed screew T clockwise respectively anti-  
clockwise until an idle speed of 2300 rpm is reached.  
T
L
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 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.  
High speed jet H  
Apply full throttle. Adjust the H jet clockwise respectively anti-  
clockwise until a racing speed of 5800-6000 rpm is reached  
and the engine runs smoothly.  
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 carburetor 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.  
Correctly adjusted carburetor  
When the carburetor is correctly adjusted the machine will  
accelerate without hesitation and burble a little at maximum  
speed. If the low speed jet L is set too lean it may cause  
starting difficulties and poor acceleration.  
Fine adjustment  
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.  
When the machine has been ”run-in”the carburetor 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.  
If both the L and H jets are set too rich it will results in  
acceleration problems or too low a working speed.  
14 – English  
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MAINTENANCE  
Muffler  
Cooling system  
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.  
To keep the working temperature as low as possible the  
machine is equipped with a cooling system.  
The cooling system consists of:  
4
1
2
3
5
The muffler is equipped with a special spark arrestor screen.  
The spark arrestor screen should be cleaned once a month.  
This is best done with a wire brush.  
1
2
3
4
5
Air intake on the underside of the blower.  
Nozzle for cooling the cylinder  
To remove the spark arrestor screen proceed as follows:  
Remove the screws to the capillary tube and exhaust pipe.  
Cooling fins on the cylinder.  
Cooling air conductor (directs cold air over the cylinder).  
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.  
Loosen the muffler’s 2 screws and remove the muffler.  
Spark plug  
The spark plug condition is influenced by:  
•
•
Incorrect carburetor adjustment.  
An incorrect fuel mixture (too much or incorrect type of  
oil).  
Pull out the spark arrestor screen and clean using a wire  
brush. Replace the spark arrestor screen if it is defective.  
•
A dirty air filter.  
These factors cause deposits on the spark plug electrodes,  
which may result in operating problems and starting  
difficulties.  
If the machine is low on power, difficult to start or runs poorly  
at idle speed: always check the spark plug first before taking  
any further action. If the spark plug is dirty, clean it and check  
that the electrode gap is 0.020 inch (0.5 mm).The spark plug  
should be replaced after about a month in operation or earlier  
if necessary.  
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!  
!
CAUTION! Always use the recommended spark plug type!  
Use of the wrong spark plug can damage the piston/cylinder.  
English – 15  
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MAINTENANCE  
The air filter is fitted in the air filter cowling.  
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  
Ensure that the filter is soaked in oil before refitting it.  
Unnecessary wear to engine parts  
Excessive fuel consumption.  
Clean the filter every 40 hours, or more regularly if conditions  
are exceptionally dusty.  
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.  
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.  
Avoid contact with hot surfaces on muffler, cylinder etc.  
Contact can result in burns to the skin.  
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.  
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.  
16 – English  
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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
3
4
5
Clean the outside of the machine.  
Check that the throttle control functions safely.  
Check that the stop switch works correctly.  
Check that nuts and screws are tight.  
Check that there are no fuel leaks.  
Weekly maintenance  
1
2
Clean the air filter. Replace if necessary.  
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.  
Monthly maintenance  
1
Check fuel hose for cracks or other damage. Change if  
necessary.  
2
3
Check all cables and connections.  
Replace the spark plug. Check that the spark plug is fitted  
with a suppressor.  
4
5
Check and clean the spark arrestor screen on the muffler.  
Check that the vibration damping elements are not  
damaged.  
6
Clean the fuel tank.  
IMPORTANT!  
Use only HUSQVARNA replacement parts. Use of other  
brands of replacement parts can cause damage to your unit  
or injury to the operator or others.Your warranty does not  
cover damage or liability caused by the use of accessories  
and/or attachments not specifically recommended by  
HUSQVARNA.  
English – 17  
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TECHNICAL DATA  
Technical data  
Technical data  
356BT  
356BF  
x
x
Engine  
3
Cylinder displacement, cu.in/cm  
Cylinder bore, inch/mm  
Stroke, inch/mm  
3,15/51,7  
44  
3,15/51,7  
44  
34  
34  
Idle speed, rpm  
2300  
2,4/6000  
No  
2300  
0,9/9000  
No  
Max. engine output, acc. to ISO 8893, kW/ rpm  
Catalytic converter muffler  
Ignition system  
Manufacturer/type of ignition system  
Spark plug  
Ducati ET  
Ducati ET  
NGK BPMR 7A  
0,02/0,5  
NGK BPMR 7A  
0,02/0,5  
Electrode gap, inch/mm  
Fuel and lubrication system  
Manufacturer/type of carburetor  
Fuel tank capacity, US pint/litre  
Weight  
Zama EL27  
1,5  
Zama EL27  
1,5  
Weight without fuel, Lbs/kg  
Sound levels  
22,9/10,4  
64  
22,9/10,4  
64  
Sound level measured at 50 ft (15m) per  
ANSI B175.2, dB (A)  
Vibration levels  
Vibration levels at handles, measured according to  
2
EN/ISO 11806 and ISO 7916, m/s  
At idle, right handle:  
1,3  
4,2  
1,7  
At max. speed, right handle:  
With handle (accessory)  
2,0/2,4  
At idle, left/right handles:  
At max. speed, left/right handles:  
Fan performance  
1,7/2,5  
2,5/4,8  
1,3/1,8  
1,7/3,0  
Max. air velocity vith standard nozzle, m/s:  
79  
79  
3
Air flow with standard nozzle, m /min  
13,3  
90  
13,3  
90  
Max air velocity with flat nozzle (Accessory), m/s:  
3
Air flow with flat nozzle (accessory), m /min:  
13,0  
13,0  
Note 1: Equivalent noise pressure level is calculated as the time-weighted energy total for noise pressure levels under various  
working conditions with the following time distribution: 1/2 idle and 1/2 max. speed.  
18 – English  
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FEDERAL AND CALIFORNIA EMISSIONS CONTROLWARRANTY STATEMENT  
LENGTH OF COVERAGE  
YOUR WARRANTY RIGHTS AND  
OBLIGATIONS  
Husqvarna Forest & Garden warrants to the ultimate  
purchaser and each subsequent owner that the engine or  
equipment is designed, built, and equipped so as to conform  
with all applicable regulations adopted by EPA and CARB,  
and is free from defects in materials and workmanship that  
causes the failure of a warranted part for a period of two  
years.  
The EPA (U.S. Environmental Protection Agency), CARB  
(California Air Resources Board), Environment Canada and  
Husqvarna Forest & Garden are pleased to explain the  
emissions control system’s warranty on your 2007 and later  
small off-road engine. In U.S. and Canada, new equipment  
that use small off-road engines must be designed, built, and  
equipped to meet the applicable Federal or Californian  
stringent anti-smog standards. Husqvarna Forest & Garden  
must warrant the emissions control system on your small off-  
road engine for the period listed below provided there has  
been no abuse, neglect or improper maintenance of your  
equipment.Your emissions control system may include parts  
such as the carburetor, ignition system, catalytic converter,  
fuel tank, filters and other associated components. Also,  
included may be hoses, belts, connectors, sensors, and other  
emission-related assemblies. Where a warrantable condition  
exists, Husqvarna Forest & Garden will repair your small off-  
road engine at no cost to you including diagnosis, parts and  
labor.  
WHAT IS COVERED  
REPAIR OR REPLACEMENT OF PARTS Repair or  
replacement of any warranted part under the warranty must  
be performed at no charge to the owner at a warranty station.  
Warranty services or repairs will be provided at all Husqvarna  
Forest & Garden distribution centers that are franchised to  
service the subject engines. Throughout the emissions  
warranty period of two years, Husqvarna Forest & Garden  
must maintain a supply of warranted parts sufficient to meet  
the expected demand for such parts.  
WARRANTY PERIOD Any warranted part that is scheduled  
for replacement as required in the maintenance schedule, is  
warranted for the period of time prior to the first scheduled  
replacement point for that part. If the part fails prior to the first  
scheduled replacement, the part will be repaired or replaced  
by Husqvarna Forest & Garden at no cost. Any such part  
repaired or replaced under warranty is warranted for the  
remainder of the period prior to the first scheduled  
replacement point for the part. Any warranted part that is not  
scheduled for replacement as required in the maintenance  
schedule, is warranted for two years. If any such part fails  
during the period of warranty coverage, it will be repaired and  
replaced by Husqvarna Forest & Garden at no cost. Any such  
part repaired or replaced under the warranty is warranted for  
the remaining warranty period. Any warranted part that is  
scheduled only for regular inspection in the maintenance  
schedule will be warranted for a period of two years. A  
statement in such written instructions to the effect of ”repair or  
replace as necessary” will not reduce the period of warranty  
coverage. Any such part repaired or replaced under warranty  
will be warranted for the remaining warranty period.  
′
MANUFACTURER S WARRANTY  
COVERAGE  
The emissions control system is warranted for two years. If  
any emissions-related part on your equipment is defective,  
the part will be repaired or replaced by Husqvarna Forest &  
Garden.  
′
OWNER SWARRANTY RESPONSIBILITIES  
•
As the small off-road engine owner, you are responsible  
for performance of the required maintenance listed in your  
operator’s manual. Husqvarna Forest & Garden  
recommends that you retain all receipts covering  
maintenance on your small off-road engine, but  
Husqvarna Forest & Garden cannot deny warranty solely  
for the lack of receipts or your failure to ensure the  
performance of all scheduled maintenance.  
•
•
As the small off-road engine owner, you should however  
be aware that the Husqvarna Forest & Garden may deny  
you warranty coverage if your small off-road engine or a  
part has failed due to abuse, neglect, or improper  
maintenance or unapproved modifications.  
DIAGNOSIS The owner must not be charged for diagnostic  
labor that leads to the determination that a warranted part is  
in fact defective, provided that such diagnostic work is  
performed at a warranty station.  
CONSEQUENTIAL DAMAGES Husqvarna Forest & Garden  
is liable for damages to other engine components proximately  
caused by a failure under warranty of any warranted part.  
You are responsible for presenting your small off-road  
engine to a Husqvarna Forest & Garden distribution  
center or service center as soon as the problem exists.  
The warranty repairs should be completed in a reasonable  
amount of time, not to exceed 30 days. If you have any  
questions regarding your warranty coverage, you should  
contact Husqvarna Forest & Garden at 1-800-487-5963.  
EMISSION WARRANTY PARTS LIST  
1
2
3
4
5
6
7
Carburetor and internal parts  
Intake pipe, airfilter holder and carburetor bolts.  
Airfilter and fuelfilter covered up to maintenance schedule.  
Spark Plug, covered up to maintenance schedule  
Ignition Module  
WARRANTY COMMENCEMENT DATE  
The warranty period begins on the date the engine or  
equipment is delivered to an ultimate purchaser.  
Muffler with catalytic converter  
Fuel tank  
English – 19  
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FEDERAL AND CALIFORNIA EMISSIONS CONTROLWARRANTY STATEMENT  
WHAT IS NOT COVERED  
All failures caused by abuse, neglect or improper  
maintenance are not covered.  
ADD -ON OR MODIFIED PARTS  
Add-on or modified parts that are not exempted by CARB or  
EPA may not be used. The use of any non-exempted add-on  
or modified parts will be grounds for disallowing a warranty  
claim.Husqvarna Forest & Garden will not be liable to warrant  
failures of warranted parts caused by the use of a non-  
exempted add-on or modified part.  
HOW TO FILE A CLAIM  
If you have any questions regarding your warranty rights and  
responsibilities, you should contact your nearest authorized  
servicing dealer or call Husqvarna Forest & Garden at 1-800-  
487-5963.  
WHERE TO GET WARRANTY SERVICE  
Warranty services or repairs are provided through all  
Husqvarna Forest & Garden authorized servicing dealers.  
MAINTENANCE, REPLACEMENT AND  
REPAIR OF EMISSION-RELATED PARTS  
Any replacement part may be used in the performance of any  
warranty maintenance or repairs and must be provided  
without charge to the owner. Such use will not reduce the  
warranty obligations of the manufacturer.  
MAINTENANCE STATEMENT  
The owner is responsible for the performance of all required  
maintenance, as defined in the operator’s manual.  
20 – English  
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1150369-95  
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2006-12-13  
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