Operator's Manual

356BTX-series

Please read the operator's manual carefully and make sure you understand the instructions before using the machine.

English

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.

Key to Symbols

⚠️ 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.

Please read the operator's manual carefully and make sure you understand the instructions before using the machine.

Always wear:

Other symbols/decals on the machine refer to special certification requirements for certain markets.

⏹️ Switch off the engine by 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.

? 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 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.

Contents

Note the following before starting:

Please read the operator's manual carefully.

⚠️ WARNING! Long-term exposure to noise can result in permanent hearing impairment. So always use approved hearing protection.

⚠️ 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.

⚠️ 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.

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.

Safety Instructions

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.

⚠️ 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.

⚠️ WARNING! Never use a machine that has faulty safety equipment! Carry out the inspection, maintenance and service routines listed in this section.

Stop Switch

⏹️ Use the stop switch to switch off the engine.

Safety Instructions

Vibration Damping System

Your machine is equipped with a vibration damping system that is designed to minimize vibration and make operation easier.

⚠️ 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.

Muffler

The muffler 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.

⚠️ 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!

⚠️ WARNING! The inside of the muffler contain chemicals that may be carcinogenic. Avoid contact with these elements in the event of a damaged muffler.

Checking, Maintaining and Servicing the Machine's Safety Equipment

⚠️ WARNING! All servicing and repair work on the machine requires special training. This is especially true of the machine's safety equipment. If your machine fails any of the checks described below you must contact your service agent. When you buy any of our products we guarantee the availability of professional repairs and service. If the retailer who sells your machine is not a servicing dealer, ask him for the address of your nearest service agent.

Stop Switch

Start the engine and make sure the engine stops when you move the stop switch to the stop setting.

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.

Safety Instructions

Vibration Damping System

Check the vibration damping units regularly for cracks or deformation. Replace them if damaged.

Check that the vibration damping element is undamaged and securely attached.

Muffler

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 blocked mesh will cause the engine to overheat and may lead to serious damage.

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

⚠️ 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.

Safety Instructions

Starting

Fuel Safety

Never start the machine:

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.

⚠️ 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.

Tighten the side straps so that the pressure is evenly distributed across the shoulders.

Safety Instructions

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.

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.

Safety Instructions

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.

⚠️ 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. 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.

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

Assembly

Assembling the Blow Pipe and Control Handle

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

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.

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

Petrol, litreTwo-stroke oil, litre
2% (1:50)3% (1:33)
50,100,15
100,200,30
150,300,45
200,400,60

Mixing

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.

Fuel Handling

Fuelling

⚠️ 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.

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.

Starting and Stopping

Starting and Stopping

Primer bulb: Press the air purge repeatedly until fuel begins to fill the bulb. The bulb need not be completely filled.

⚠️ 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.

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.

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.

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 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 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

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:

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.

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.

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.

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.

Loosen the muffler's 2 screws and remove the muffler.

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:

  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).
  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

The spark plug condition is influenced by:

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.

0,5 mm

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:

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.

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.

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.

Ensure that the filter is soaked in oil before refitting it.

Maintenance

Maintenance Schedule

Below you will find some general maintenance instructions. If you need further information please contact your service workshop.

Daily Maintenance

  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 necessary.
  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.

Monthly Maintenance

  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.

Technical Data

Technical Data

Technical data356BTx
Engine
Cylinder displacement, cm³51,7
Cylinder bore, mm44
Stroke, mm34
Idle speed, rpm2300
Max. engine output, acc. to ISO 8893, kW/ rpm2,4/6000
Catalytic converter mufflerNo
Speed-regulated ignition systemYes
Ignition system
Spark plugNGK BPMR 7A
Electrode gap, mm0,5
Fuel and lubrication system
Fuel tank capacity, litre1,5
Weight
Weight without fuel, kg10,4
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)91
Vibration levels (see note 3)
Equivalent vibration levels (ahv, eq) at handles, measured according to EN15503, m/s²3,9
Fan performance
Max. air velocity vith standard nozzle, m/s:79
Air flow with standard nozzle, m³/min13,3
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/s².

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:

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.)

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