Husqvarna 543 XPG operation manual

EN Operator's manual 2-37 DE Bedienungsanweisung 38-75 ES Manual de usuario 76-113 FR Manuel d'utilisation 114-151 IT Manuale dell'operatore 152-189 NL Gebruiksaanwijzing 190-226 PT Manual do utilizador 227-264 SL Navodila za uporabo 265-300
543 XP®, 543 XP®G

Contents

18
19
6
17
7
27
25
1
8
9
10
11
3
4
2
31
30
32
12
15
24
5
5
26
14
16
13
5
21
22
23
28
29
20
5
33
34
35
Operation...................................................................... 10
Maintenance................................................................. 21

Introduction

Troubleshooting............................................................ 33
Transportation and storage...........................................34
Technical data.............................................................. 34
Accessories.................................................................. 35
EC Declaration of Conformity....................................... 37

Intended use

This product is intended for sawing in wood.
Note: National regulations can set limit to the operation of the product.

Product overview

1. Air filter cover
2. Spark plug
3. Spark plug cap
4. Air filter

Product description

The Husqvarna 543 XP, 543 XPG are chainsaw models with a combustion engine.
Work is constantly in progress to increase your safety and efficiency during operation. Speak to your servicing dealer for more information.
5. Vibration damping system, 4 units
6. Throttle trigger lockout
7. Rear handle
8. Information and warning decal
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9. Throttle trigger
yyyywwxxxxx
10. Start/stop switch
11. Choke control
12. Fuel tank
13. Air purge bulb
14. Starter rope handle
15. Starter housing
16. Chain oil tank
17. Muffler
18. Chain brake and front hand guard
19. Front handle
20. Switch for heated handles (543 XPG)
21. Right hand guard
22. Clutch cover
23. Chain tensioning screw
24. Chain catcher
25. Saw chain
26. Guide bar
27. Bar tip sprocket
28. Chain adjuster pin
29. Brake band
30. Operator's manual
31. Transportation guard
32. Combination wrench
33. Product and serial number plate
34. Oil pump adjustment screw
35. Bar nuts

Symbols on the product

Careless or incorrect use of this product can result in serious or fatal injury to the operator or others.
Read the operator's manual carefully and make sure you understand the instructions before you use this product.
Both of the operator's hands must be used to operate the chainsaw.
Never operate the chainsaw holding it with one hand only.
Never let the guide bar tip come in contact with any object.
Warning! Kickback may occur when the nose or tip of the guide bar touches an object, and cause a lightning fast reverse reaction, kicking the guide bar up and towards the operator. May cause serious personal injury.
Chain brake, activated (right). Chain brake, not activated (left).
Choke lever in "open position".
Choke lever in "closed position".
Air purge.
Refuelling.
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Always wear approved protective helmet, approved hearing protection and protective goggles or a visor.
This product is in accordance with applicable EC Directives.
Noise emissions to the environment according to European Directive 2000/14/EC and New South Wales legislation "Protection of the Environment Operations (Noise Control) Regulation 2017". Noise emission data can be found on the machine label and in the chapter
Technical data on page 34
.
Chain oil fill.
Adjustment of the oil pump.
The rating plate showing serial number. yyyy is the production year, ww is the production week.
Note: Other symbols/decals on the product refer to certification requirements for certain markets.

Euro V Emissions

WARNING: Tampering with the engine voids the EU type-approval of this product.

Safety

Safety definitions

Warnings, cautions and notes are used to point out specially important parts of the manual.
WARNING: Used if there is a risk of injury or death for the operator or bystanders if the instructions in the manual are not obeyed.
CAUTION: Used if there is a risk of damage to the product, other materials or the adjacent area if the instructions in the manual are not obeyed.
Note: Used to give more information that is necessary in a given situation.

General safety instructions

WARNING: Read the warning instructions that follow before you use the product.
• A chainsaw is a dangerous tool if used carelessly or incorrectly and can cause serious injury or death. It is very important that you read and understand the contents of this operator’s manual.
• Under no circumstances may the design of the product be modified without the permission of the manufacturer. Do not use a product that appears to have been modified by others and only use accessories recommended for this product. Non­authorized modifications and/or accessories can result in serious personal injury or the death of the operator or others.
• The inside of the muffler contain chemicals that may be carcinogenic. Avoid contact with these elements in the event of a damaged muffler.
• Long term inhalation of the engine’s exhaust fumes, chain oil mist and sawdust can represent a health risk.
• This product 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 product.
• The information in this operator's manual is never a substitute for professional skills and experience. If
you get into a situation where you feel unsafe, stop and seek expert advice. Contact your servicing dealer or an experienced chainsaw user. Do not attempt any task that you feel unsure of!

Safety instructions for operation

WARNING: Read the warning instructions that follow before you use the product.
• Before using the product you must understand the effects of kickback and how to avoid them. Refer to
Kickback information on page 11
• Never use a product that is faulty.
• Never use a product with visible damage to the spark plug cap and ignition cable. A risk of sparking arises, which can cause a fire.
• Never use the product if you are fatigued, while under the influence of alcohol or drugs, medication or anything that could affect your vision, alertness, coordination or judgement.
• Do not use the product in bad weather such as dense fog, heavy rain, strong wind, intense cold, etcetera. Working in bad weather is tiring and often brings added risks, such as icy ground, unpredictable felling direction, etcetera.
• Never start a product unless the guide bar, saw chain and all covers are fitted correctly. Refer to
Assembly on page 9
and saw chain attached to the product the clutch can come loose and cause serious injury.
• Never start the product indoors. Exhaust fumes can be dangerous if inhaled.
• The exhaust fumes from the engine are hot and can contain sparks, which can start a fire. Never start the product near flammable material!
• Observe your surroundings and make sure that there is no risk of people or animals coming in contact with or affect your control of the product.
• Never allow children to use or be in the vicinity of the product. As the product is equipped with a spring-
for instructions. Without a bar
for instructions.
4
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loaded start/stop switch and can be started by low speed and force on the starter handle, even small children under some circumstances can produce the force necessary to start the product. This can mean a risk of serious personal injury. Therefore remove the spark plug cap when the product is not under close supervision.
• You must have a steady stance in order to have full control of the product. Never work standing on a ladder, in a tree or where you do not have a firm ground to stand on.
• Lack of concentration can lead to kickback if the kickback zone of the bar accidentally touches a branch, nearby tree or some other object.
• Never use the product by holding it with one hand. This product is not safely controlled with one hand.
• Always hold the product with both hands. The right hand should be on the rear handle, and the left hand on the front handle. All people, whether right or left handed, should use this grip. Use a firm grip with thumbs and fingers encircling the handles. This grip minimizes the risk of kickback and lets you keep the product under control. Do not let go of the handles!
• Never use the product above shoulder height.
• Do not use the product in a situation where you cannot call for help in case of an accident.
• Before moving your product, switch off the engine and lock the saw chain using the chain brake. Carry the product with the guide bar and saw chain pointing backwards. Fit a transportation guard to the guide bar before transporting the product or carrying it for any distance.
• When you put the product on the ground, lock the saw chain using the chain brake and ensure you have a constant view of the product. Switch the engine off before leaving your product for any length of time.
• Sometimes chips get stuck in the clutch cover causing the saw chain to jam. Always stop the engine before cleaning.
• Running an engine in a confined or badly ventilated area can result in death due to carbon monoxide poisoning.
• The exhaust fumes from the engine are hot and may contain sparks which can start a fire. Do not start the product indoors or near flammable material.
• Use the chain brake as a parking brake when you start the product and when you move short distances. Always carry the product in the front handle. This decreases the risk that you or a person near you get hit by the saw chain.
• 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. These symptoms may be increased in cold temperatures.
• It is not possible to cover every conceivable situation you can face when using this product. Always exercise care and use your common sense. Avoid all situations which you consider to be beyond your capability. If you still feel uncertain about operating procedures after reading these instructions, you should consult an expert before continuing. Do not hesitate to contact your dealer or Husqvarna if you have any questions about the use of the product. We will willingly be of service and provide you with advice as well as help you to use your product both efficiently and safely. Attend a training course in chainsaw usage if possible. Your dealer, forestry
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5
school or your library can provide information about
A
B
A
B
which training materials and courses are available.

Personal protective equipment

Safety devices on the product

WARNING: Read the warning instructions that follow before you use the product.
• Do not use a product with defective safety devices.
• Do a check of the safety devices regularly. Refer to
Maintenance and checks of the safety devices on the product on page 23
• If the safety devices are defective, speak to your Husqvarna servicing dealer.
.
WARNING: Read the warning instructions that follow before you use the product.
• Most chainsaw accidents occur when the saw chain touches the operator. You must use approved personal protective equipment during operation. Personal protective equipment does not give you full protection from injuries but it decreases the degree of injury if an accident occurs. Speak to your servicing dealer for recommendations about which equipment to use.
• Your clothing must be close-fitting but not limit your movements. Regularly do a check of the condition of the personal protective equipment.
• Use an approved protective helmet.
• Use approved hearing protection. Long-term exposure to noise can result in permanent damage to the hearing.
• Use protective glasses or a face visor to decrease the risk of injury from thrown objects. The product can throw objects, such as wood chips, small pieces of wood and more, at large force. This can result in serious injury, especially to the eyes.
• Use gloves with saw protection.
• Use pants with saw protection.
• Use boots with saw protection, steel toe-cap and non-slip sole.
• Always have a first-aid kit with you.
• Risk of sparks. Keep fire extinguishing tools and a shovel near to prevent forest fires.
Chain brake and front hand guard Your product has a chain brake that stops the saw chain
if you get a kickback. The chain brake decreases the risk of accidents, but only you can prevent them.
The chain brake engages (A) manually by your left hand or automatically by the inertia release mechanism. Push the front hand guard (B) forward to engage the chain brake manually.
Pull the front hand guard rearward to disengage the chain brake.
Throttle trigger lockout The throttle trigger lockout prevents accidental operation
of the throttle trigger. If you put your hand around the handle and press the throttle trigger lockout (A), it releases the throttle trigger (B). If you release the handle, the throttle trigger and the throttle trigger lockout move back to their initial positions. This function locks the throttle trigger at idle speed.
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Chain catcher The chain catcher catches the saw chain if it breaks or
comes loose. Correct saw chain tension and correctly applied maintenance on the saw chain and guide bar, decrease the risk of accidents.
Right hand guard The right hand guard is a protection for your hand on the
rear handle. The right hand guard gives you protection if the saw chain breaks or derails. The right hand guard also gives you protection from branches or twigs.
operate the product near flammable materials and/or fumes.
WARNING: Do not operate a product without a muffler or with a defective muffler. A defective muffler can increase the noise level and the risk of fire. Keep fire extinguishing tools near. Do not use a product without, or with a broken, spark arrestor mesh if you must have a spark arrestor mesh in your area.
The muffler keeps the noise levels to a minimum and points the exhaust fumes away from the operator. In areas with a hot, dry weather there is a high risk of fire. Obey local regulations and maintenance instructions.
Vibration damping system The vibration damping system decreases vibration in the
handles. Vibration damping units operate as a separation between the product body and the handle unit.
Refer to
Product overview on page 2
about where the vibration damping system is on your product.
Start/stop switch Use the start/stop switch to stop the engine.
Muffler
WARNING: The muffler becomes very hot during/after operation and at idle speed. There is a risk of fire, especially when you
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for information

Fuel safety

WARNING: that follow before you use the product.
• Make sure there is plenty of ventilation when refuelling or mixing fuel (petrol and two-stroke oil).
• Fuel and fuel vapour are highly flammable and can cause serious injury when inhaled or allowed to come in contact with the skin. For this reason observe caution when handling fuel and make sure there is adequate ventilation.
• Take care when handling fuel and chain oil. Be aware of the risks of fire, explosion and those associated with inhalation.
• Do not smoke and do not place any hot objects in the vicinity of fuel.
• 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.
• Never refuel the machine while the engine is running.
Read the warning instructions
7
• Always move the product at least 3 m (10 ft) away from the refuelling area and fuel source before starting.
After refuelling, there are some situations where you must never start the product:
• If you have spilled fuel or chain oil on the product. Wipe off the spillage and allow remaining fuel to evaporate.
• If you have spilled fuel on yourself or on your clothes. Change your clothes and wash any part of your body that has come in contact with fuel. Use soap and water.
• If the product leaks fuel. Regularly do a check for leaks from the fuel tank, fuel cap and fuel lines.

Safety instructions for maintenance

WARNING: Read the warning instructions that follow before you do maintenance on the product.
• Use protective gloves when you use or do maintenance on the saw chain. A saw chain that does not move can also cause injuries.
• Keep the cutting teeth correctly sharpened. Obey the instructions and use the recommended file gauge. A saw chain that is damaged or incorrectly sharpened increases the risk of accidents.
• Keep the correct depth gauge setting. Obey the instructions and use the recommended depth gauge setting. Too large depth gauge setting increases the risk of kickback.
• Make sure that the saw chain has the correct tension. If the saw chain is not tight against the guide bar, the saw chain can derail. An incorrect saw chain tension increases wear on the guide bar, saw chain and chain drive sprocket. Refer to
tension of the saw chain on page 30
To adjust the
.
• Do only the maintenance and servicing given in this operator's manual. Let professional servicing personnel do all other servicing and repairs.
• Regularly do the safety checks, maintenance and service instructions given in this manual. Regular maintenance increases the life of the product and decreases the risk of accidents. Refer to
Maintenance on page 21
• If the safety checks in this operator's manual is not approved after you do maintenance, speak to your servicing dealer. We guarantee that there are professional repairs and servicing available for your product.
for instructions.

Safety instructions for the cutting equipment

WARNING: that follow before you use the product.
• Only use the guide bar/saw chain combinations and filing equipment that we recommend. Refer to
Accessories on page 35
8
Read the warning instructions
for instructions.
• Do maintenance on the cutting equipment regularly and keep it correctly lubricated. If the saw chain is not correctly lubricated, the risk of wear on the guide bar, saw chain and chain drive sprocket increases.
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Assembly

A

Introduction

WARNING: Read and understand the safety chapter before you assemble the product.

To assemble the guide bar and saw chain

1. Disengage the chain brake.
2. Remove the bar nuts and the clutch cover. Remove the transportation guard (A).
3. Assemble the guide bar onto the bar bolt. Move the guide bar to its most rear position.
4. Install the saw chain correctly around the drive sprocket and put it in the groove on the guide bar.
WARNING: Always use protective gloves when you assemble the saw chain.
5. Make sure that the edges of the cutters point forward on the top edge of the guide bar.
6. Align the hole in the guide bar with the chain adjuster pin and install the clutch cover.
7. Tighten the bar nut finger tight.
8. Tighten the saw chain. Refer to
of the saw chain on page 30
9. Tighten the bar nuts.
To adjust the tension
for instructions.
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Operation

7
10
9
1
2
3
6,8
4

Introduction

WARNING: Read and understand the safety chapter before you use the product.

To do a function check before you use the product

1. Make sure that the chain brake operates correctly and that it is not damaged.
2. Make sure that the right hand guard is not damaged.
3. Make sure that the throttle lockout operates correctly and that it is not damaged.
4. Make sure that the start/stop switch operates correctly and that it is not damaged.
5. Make sure that there is no oil on the handles.
6. Make sure that the vibration damping system operates correctly and that it is not damaged.
7. Make sure that the muffler is correctly attached and that it is not damaged.
8. Make sure that all parts of the product are correctly attached and not damaged or missing.
9. Make sure that the chain catcher is correctly attached.
10. Do a check of the saw chain tension.

Fuel

This product has a two-stroke engine.
CAUTION: Incorrect type of fuel can result in engine damage. Use a mixture of gasoline and two-stroke oil.

To mix fuel

Gasoline
• Use good quality unleaded gasoline with a maximum of 10% ethanol contents.
CAUTION: Do not use gasoline with an octane grade less than 90 RON/87 AKI. Use of a lower octane grade can cause engine knocking, which causes engine damages.
• We recommend that you use gasoline of a higher octane grade for work with continuously high rpm.
Two-stroke oil
• For best results and performance use Husqvarna two-stroke oil.
• If Husqvarna two-stroke oil is not available, use a two-stroke oil of good quality for air-cooled engines. Speak to your servicing dealer to select the correct oil.
CAUTION: Do not use two-stroke oil for water-cooled outboard engines, also referred to as outboard oil. Do not use oil for four-stroke engines.
To mix gasoline and two-stroke oil
Gasoline, liter Two-stroke oil,
liter
2% (50:1)
5 0.10
10 0.20
15 0.30
20 0.40
CAUTION: Small errors can influence the ratio of the mixture drastically when you mix small quantities of fuel. Measure the quantity of oil carefully and make sure that you get the correct mixture.

Premixed fuel

• Use Husqvarna premixed alkylate fuel of a good quality, for best performance and extension of the engine life. This fuel contains less harmful chemicals compared to regular fuel, which decreases harmful exhaust fumes. The quantity of remains after combustion is lower with this fuel, which keeps the components of the engine more clean.
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WARNING: The saw chain can break if the lubrication of the cutting equipment is not sufficient. Risk of serious injury or death to the operator.
WARNING: This product has a function that lets the fuel run out before the chain oil. Use the correct chain oil for this function to operate correctly. Speak to your servicing dealer when you select your chain oil.
1. Fill half the quantity of gasoline in a clean container for fuel.
2. Add the full quantity of oil.
3. Shake the fuel mixture.
4. Add the remaining quantity of gasoline to the container.
5. Carefully shake the fuel mixture.
CAUTION: Do not mix fuel for more than 1 month at a time.

To fill the fuel tank

1. Clean the area around the fuel tank cap.
2. Shake the container and make sure that the fuel is fully mixed.
3. Remove the fuel tank cap and fill the fuel tank.
4. Tighten the fuel tank cap carefully.
5. Move the product 3 m/10 ft or more away from the refueling area and fuel source before you start the engine.
To see where the fuel tank is on your product,
Note: refer to
Product overview on page 2
.

To do a run-in

• During the first 10 hours of operation, do not apply full throttle without load for extended periods.

To use the correct chain oil

WARNING: cause injury to you and the environment. Waste oil also causes damage to the oil pump, the guide bar and the saw chain.
Do not use waste oil, which can
• Use Husqvarna chain oil for maximum saw chain life and to prevent negative effects on the environment. If Husqvarna chain oil is not available, we recommend you to use a standard chain oil.
• Use a chain oil with good adherence to the saw chain.
• Use a chain oil with correct viscosity range that agrees with the air temperature.
CAUTION: If the oil is too thin, it runs out before the fuel. In temperatures below 0°C/32°F some chain oils become too thick, which can cause damage to the oil pump components.
• Use the recommended cutting equipment. Refer to
Accessories on page 35
• Remove the cap to the chain oil tank.
• Fill the chain oil tank with chain oil.
• Attach the cap carefully.
To see where the chain oil tank is on you product,
Note: refer to
Product overview on page 2
.
.

Kickback information

WARNING: injury or death to the operator or others. To decrease the risk you must know the causes of kickback and how to prevent them.
A kickback occurs when the kickback zone of the guide bar touches an object. A kickback can occur suddenly
A kickback can cause serious
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11
and with large force, which throws the product in the direction of the operator.
Kickback always occurs in the cutting plane of the guide bar. Usually, the product is thrown against the operator but can also move in a different direction. It is how you use the product when the kickback occurs that causes the direction of the movement.
A smaller bar tip radius decreases the force of the kickback.
Use a low kickback saw chain to decrease the effects of kickback. Do not let the kickback zone touch an object.
WARNING: No saw chain fully prevents kickback. Always obey the instructions.
Will the chain brake always protect me from injury
• during a kickback?
No. The chain brake must operate correctly to give protection. The chain brake must also be engaged during a kickback to stop the saw chain. If you are near the guide bar, it is possible that the chain brake does not have time to stop the saw chain before it hits you.
WARNING: Only you and the correct working technique can prevent kickbacks.

To start the product

To prepare to start with a cold engine

WARNING: The chain brake must be engaged when the product is started to decrease the risk of injury.
1. Move the front hand guard forward to engage the chain brake.
2. Push the air purge bulb approximately 6 times or until fuel starts to fill the bulb. It is not necessary to fill the air purge bulb fully.

Common questions about kickback

• Will the hand always engage the chain brake during a kickback?
No. It is necessary to use some force to push the front hand guard forward. If you do not use the force necessary, the chain brake will not be engaged. You must also hold the handles of the product stable with two hands during work. If a kickback occurs, it is possible that the chain brake does not stop the saw chain before it touches you. There are also some positions in which your hand can not touch the front hand guard to engage the chain brake. An example of this is in the felling position.
• Will the inertia release mechanism always engage the chain brake during kickback?
No. First, the chain brake must operate correctly. Refer to
To do a check of the chain brake on page
23
for instructions about how to do a check of the chain brake. We recommend you to do this each time before you use the product. Second, the force of the kickback must be large to engage the chain brake. If the chain brake is too sensitive, it can engage during rough operation.
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3. Set the choke to choke position.
4. Continue to more instructions.
To start the product on page 13
for

To prepare start with a warm engine

WARNING: The chain brake must be engaged when the product is started to decrease the risk of injury.
1. Move the front hand guard forward to engage the chain brake.

To start the product

WARNING: You must keep your feet in a stable position when you start the product.
WARNING: If the saw chain rotates at idle speed, speak to your servicing dealer and do not use the product.
1. Put the product on the ground.
2. Put your left hand on the front handle.
3. Put your right foot into the footgrip on the rear handle.
4. Pull the starter rope handle slowly with your right hand until you feel resistance.
WARNING: Do not twist the starter rope around your hand.
5. Pull the starter rope handle quickly and with force.
2. Push the air purge bulb approximately 6 times or until fuel starts to fill the bulb. It is not necessary to fill the air purge bulb fully.
Do not set the choke to the choke position.
Note:
3. Continue to more instructions.
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To start the product on page 13
for
CAUTION: Do not pull the starter rope to full extension and do not let go of the starter rope handle. This can cause damage to the product.
a) If you start your product with a cold engine, pull
the starter rope handle until the engine fires.
You can identify when the engine fires
Note: through a "puff" sound.
b) Disengage the choke.
6. Pull the starter rope handle until the engine starts.
7. Quickly disengage the throttle trigger lockout to set the product to idle speed.
13
8. Move the front hand guard rearward to disengage the chain brake.
9. Use the product.

To stop the product

• Push the start/stop switch to position 0 to stop the engine.

Pull stroke and push stroke

You can cut through wood with the product in 2 different positions.
• To cut on the pull stroke is when you cut with the bottom of the guide bar. The saw chain pulls through the tree when you cut. In this position you have better control of the product and the position of the kickback zone.
• To cut on the push stroke is when you cut with the top of the guide bar. The saw chain pushes the product in the direction of the operator.
WARNING: If the saw chain is caught in the trunk, the product can be pushed at you. Hold the product tightly and make sure that the kickback zone of the guide bar does not touch the tree and causes a kickback.

To use the cutting technique

WARNING: Use full throttle when you cut and decrease to idle speed after each cut.
CAUTION: Engine damage can occur if the engine runs for too long at full throttle without load.
1. Put the trunk on a saw horse or runners.
WARNING: Do not cut trunks in a pile. That increases the risk of kickback and can result in serious injury or death.
2. Remove the cut pieces from the cutting area.
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WARNING: Cut pieces in the cutting
1.
2.
1.
2.
1.
2.
area increase the risk of kickback and that you can not keep your balance.

To cut a trunk on the ground

1. Cut through the trunk on the pull stroke. Keep full throttle but be prepared for sudden accidents.
WARNING: Make sure that the saw chain does not touch the ground when you complete the kerf.
2. Cut approximately ⅔ through the trunk and then stop. Turn the trunk and cut from the opposite side.

To cut a trunk that has support on one end

WARNING: not break during cutting. Obey the instructions below.
Make sure that the trunk does

To cut a trunk that has support on two ends

WARNING: Make sure that the saw chain does not get caught in the trunk during cutting. Obey the instructions below.
1. Cut on the pull stroke approximately ⅓ through the trunk.
2. Cut through the remaining part of the trunk on the push stroke to complete the cut.
WARNING: Stop the engine if the saw chain gets caught in the trunk. Use a lever to open up the kerf and remove the product. Do not try to pull the product out by hand. This can result in injury when the product suddenly breaks free.

To use the limbing technique

For thick branches, use the cutting technique.
Note: Refer to
To use the cutting technique on page 14
.
WARNING: There is a high accident risk when you use the limbing technique. Refer to
Kickback information on page 11
instructions how to prevent kickback.
1. Cut on the push stroke approximately ⅓ through the trunk.
2. Cut through the trunk on the pull stroke until the two kerfs touch.
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WARNING: Cut limbs one by one. Be careful when you remove small limbs and do not cut bushes or many small limbs at the same time. Small limbs can get caught in the saw chain and prevent safe operation of the product.
for
Note: Cut the limbs piece by piece if it is necessary.
1
2
3
1. Remove the limbs on the right side of the trunk. a) Keep the guide bar on the right side of the trunk
and keep the body of the product against the trunk.
b) Select the applicable cutting technique for the
tension in the branch.
b) Cut on the push stroke.
3. Remove the limbs on the left side of the trunk. a) Select the applicable cutting technique for the
tension in the branch.
WARNING: If you are not sure about how to cut the branch, speak to a professional chainsaw operator before you continue.
2. Remove the limbs on the top of the trunk. a) Keep the product on the trunk and let the guide
bar move along the trunk.
Refer to
To cut trees and branches that are in tension on
page 20
for instructions on how to cut branches that
are in tension.
WARNING: If you are not sure about how to cut the branch, speak to a professional chainsaw operator before you continue.

To use the tree felling technique

WARNING: fell a tree. If possible, engage in a training course in chainsaw operation. Speak to an operator with experience for more knowledge.
16 956 - 003 -
You must have experience to

To keep a safe distance

1. Make sure that persons around you keep a safe distance at a minimum of 2 1/2 tree lengths.
2. Make sure that no person is in the risk zone before or during felling.

To calculate the felling direction

1. Examine in which direction it is necessary for the tree to fall. The goal is to fell it in a position where you can limb and cut the trunk easily. It is also important that you are stable on your feet and can move about safely.
WARNING: possible to fell the tree in its natural direction, fell the tree in a different direction.
2. Examine the natural fall direction of the tree. For example the tilt and bend of the tree, wind direction, the location of the branches and weight of snow.
3. Examine if there are obstacles, for example other trees, power lines, roads and/or buildings around.
4. Look for signs of damage and rot in the stem.
WARNING: Rot in the stem can mean a risk that the tree falls before you complete the cutting.
5. Make sure the tree has no damaged or dead branches that can break off and hit you during felling.
If it is dangerous or not
6. Do not let the tree fall onto a different standing tree. It is dangerous to remove a caught tree and there is a high accident risk. Refer to
on page 19
.
WARNING: During critical felling operations, lift your hearing protection immediately when the sawing is complete. It is important that you hear sounds and warning signals.
To free a trapped tree

To clear the trunk and prepare your path of retreat

Cut off all branches from your shoulder height and down.
1. Cut on the pull stroke from the top down. Make sure that the tree is between you and the product.
2. Remove undergrowth from the work area around the tree. Remove all cut off material from the work area.
3. Do a check of the area for obstacles such as stones, branches and holes. You must have a clear path of retreat when the tree starts to fall. Your path of retreat must be approximately 135 degrees away from the felling direction.
1. The danger zone
2. The path of retreat
3. The felling direction
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17
1
2
2
1
3
To make the directional cuts
45º-70º
2
1
1. Make the directional cuts ¼ of the diameter of the tree. Make a 45°-70° angle between the top directional cut and bottom directional cut.

To fell a tree

Husqvarna recommends you to make the directional cuts and then use the safe corner method when you fell a tree. The safe corner method helps you to make a correct felling hinge and control the felling direction.
WARNING: Do not fell trees with a diameter that is more than two times larger than the guide bar length. For this, you must have special training.
The felling hinge The most important procedure during tree felling is to
make the correct felling hinge. With a correct felling hinge, you control the felling direction and make sure that the felling procedure is safe.
The thickness of the felling hinge must be equal and a minimum of 10% of the tree diameter.
WARNING: If the felling hinge is incorrect or too thin, you have no control of the felling direction.
a) Make the top directional cut. Align the felling
direction mark (1) of the product with the felling direction of the tree (2). Stay behind the product and keep the tree on your left side. Cut with a pull stroke.
b) Make the bottom directional cut. Make sure that
the end of the bottom directional cut is at the same point as the end of the top directional cut.
2. Make sure that the bottom directional cut is horizontal and at a 90° angle to the felling direction.
To use the safe corner method The felling cut must be made slightly above the
directional cut.
WARNING: guide bar tip. Start to cut with the lower section of the guide bar tip as you make a bore cut into the trunk.
Be careful when you cut with the
18 956 - 003 -
1. If the usable cutting length is longer than the tree diameter, do these steps (a-d).
a) Make a bore cut straight into the trunk to
complete the felling hinge width.
b) Cut on the pull stroke until ⅓ of the trunk is left. c) Pull the guide bar 5-10 cm/2-4 in rearward. d) Cut through the remaining of the trunk to
complete a safe corner that is 5-10 cm/2-4 in wide.
2. If the usable cutting length is shorter than the tree diameter, do these steps (a-d).
a) Make a bore cut straight into the trunk. The bore
cut must extend 3/5 of the tree diameter.
b) Cut on the pull stroke through the remaining
trunk.
3. Put a wedge in the kerf straight from behind.
4. Cut off the corner to make the tree fall.
Note: If the tree does not fall, hit the wedge until it does.
5. When the tree starts to fall, use the path of retreat to move away from the tree. Move a minimum of 5 m/15 ft away from the tree.

To free a trapped tree

WARNING: It is very dangerous to remove a trapped tree and there is a high accident risk. Keep out of the risk zone and do not try to fell a trapped tree.
c) Cut straight into the trunk from the other side of
the tree to complete the felling hinge.
d) Cut on the push stroke, until ⅓ of the trunk is left,
to complete the safe corner.
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The safest procedure is to use one of the following winches:
• Tractor-mounted
• Portable
19

To cut trees and branches that are in tension

1
2
1. Figure out which side of the tree or branch that is in tension.
2. Figure out where the point of maximum tension is.
3. Examine which is the safest procedure to release the tension.
Note: In some situations the only safe procedure is to use a winch and not your product.
4. Keep a position where the tree or branch can not hit you when the tension is released.
5. Make one or more cuts of sufficient depth necessary to decrease the tension. Cut at or near the point of maximum tension. Make the tree or branch break at the point of maximum tension.
7. Continue to cut more into the tree until the tree/ branch bends and the tension is released.
8. Cut the tree/branch from the opposite side of the bend, after the tension is released.

To use the product in cold weather

CAUTION: Snow and cold weather can cause operation problems. Risk of too low engine temperature or ice on the air filter and the carburetor.
1. In temperatures below 0°C/32°F, move the plug from position 1 to position 2.
WARNING: Do not cut straight through a tree or branch that is in tension.
WARNING: Be very careful when you cut a tree that is in tension. There is a risk that the tree moves quickly before or after you cut it. Serious injury can occur if you are in an incorrect position or if you cut incorrectly.
6. If you must cut across tree/branch, make 2 to 3 cuts, 1 in. apart and with a depth of 2 in.
20 956 - 003 -
2. For temperatures below -5°C/23°F or in conditions with snow, a winter cover is available. Assemble the winter cover on the starter housing. The winter cover decreases the flow of cool air and keeps snow away from the carburetor space.
CAUTION: Remove the winter cover if the temperature increases above -5°C/23°F. Put

Maintenance

Introduction

the winter plug in in position 1 if the temperature increases above 0°C/32°F. Risk of too high engine temperature and damage to the engine.

Heated handles (543 XPG)

On models with the designation "G", the front and rear handles have electrical heating coils. A generator supplies power to the heating coils.
Push the switch to engage the heat in the handles. The heat is on when you can see the red mark on the switch.

Electrical carburetor heating (543 XPG)

Adjustment of the carburetor heating is done electrically through a thermostat. This keeps the correct carburetor temperature and prevents ice in the carburetor.
WARNING: Read and understand the safety chapter before you do maintenance on the product.

Maintenance schedule

Daily maintenance Weekly maintenance Monthly maintenance
Clean the external parts of the prod­uct and make sure that there is no oil on the handles.
Do a check of the throttle trigger and throttle trigger lockout. Refer to
a check of the throttle trigger and throttle trigger lockout on page 23
Make sure that there is no damage on the vibration damping units.
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Clean the cooling system. Refer to
To clean the cooling system on page 32
.
Do a check of the starter, starter rope
To do
and return spring.
.
Lubricate the needle bearing. Refer to
To lubricate the needle bearing on
page 30
.
Do a check of the brake band. Refer to
To do a check of the brake band
on page 23
Do a check of the clutch centre, clutch drum and clutch spring.
Clean the spark plug. Refer to
.
To do a check of the spark plug on page 27
.
Daily maintenance Weekly maintenance Monthly maintenance
Clean and do a check of the chain brake. Refer to
To do a check of the
chain brake on page 23To do a
Remove burrs from the edges of the guide bar. Refer to
the guide bar on page 31
To do a check of
.
Clean the external parts of the carbu­rettor.
check of the front hand guard and the chain brake activation on page 23
Do a check of the chain catcher. Re­fer to
To do a check of the chain
catcher on page 24
Turn the guide bar, do a check of the lubrication hole and clean the groove in the guide bar. Refer to
.
check of the guide bar on page 31
Make sure that the guide bar and saw chain are getting sufficient oil.
Do a check of the saw chain. Refer to
To do a
.
Clean or replace the spark arrestor mesh on the muffler.
Clean the carburetor area. Do a check of all cables and connec-
.
Clean or replace the air filter. Refer to
To clean the air filter on page 27
Clean between the cylinder fins. Empty the oil tank.
Do a check of the fuel filter and the fuel hose. Replace if necessary.
tions.
Empty the fuel tank.
.
To examine the cutting equipment on page 31
.
Sharpen the saw chain and do a check of its tension. Refer to
sharpen the saw chain on page 27
Do a check of the chain drive sprock­et. Refer to
To do a check of the rim
sprocket on page 30
Clean the air intake on the starter.
Make sure that nuts and screws are tightened.
Do a check of the stop switch. Refer to
To do a check of the start/stop
switch on page 24
Make sure that these are no fuel leaks from the engine, tank or fuel lines.
Make sure that the saw chain does not rotate when the engine is at idle speed.
Make sure that there is no damage on the right hand guard.
Make sure that the muffler is correct­ly attached, has no damages and that no parts of the muffler are miss­ing.
.
To
.
.
22 956 - 003 -

Maintenance and checks of the safety devices on the product

To do a check of the brake band

1. Use a brush to remove wood dust, resin and dirt from the chain brake and clutch drum. Dirt and wear can decrease the function of the brake.
2. Do a check of the brake band. The brake band must be at a minimum of 0.6 mm/0.024 in thick at its thinnest point.

To do a check of the front hand guard and the chain brake activation

1. Make sure that the front hand guard is not damaged and that there are no defects, such as cracks.
2. Make sure that the front hand guard moves freely and that it is attached safely to the clutch cover.

To do a check of the chain brake

1. Start the product. Refer to
page 12
for instructions.
WARNING: Make sure that the saw chain does not touch the ground or other objects.
2. Hold the product tightly.
3. Apply full throttle and tilt your left wrist against the front hand guard to engage the chain brake. The saw chain must stop immediately.
WARNING: Do not let go of the front handle.
To start the product on

To do a check of the throttle trigger and throttle trigger lockout

1. Make sure that the throttle trigger and throttle trigger lockout move freely and that the return spring works correctly.
3. Hold the product with 2 hands above a stump or other stable surface.
WARNING: The engine must be off.
4. Let go of the front handle and let the guide bar tip fall against the stump.
5. Make sure that the chain brake engages as the guide bar tip hits the stump.
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2. Press down the throttle trigger lockout and make sure that it goes back to its initial position when you release it.
3. Make sure that the throttle trigger is locked at the idle position when the throttle trigger lockout is released.
23
4. Start the product and apply full throttle.
5. Release the throttle trigger and make sure that the saw chain stops and stays stationary.
WARNING: If the saw chain rotates when the throttle trigger is in the idle position, speak to your servicing dealer.

To do a check of the chain catcher

1. Make sure that there is no damage on the chain catcher.
2. Make sure that the chain catcher is stable and attached to the body of the product.

To do a check of the right hand guard

• Make sure that the right hand guard is not damaged and that there are no defects, such as cracks.
2. Push the start/stop switch to the STOP position. The engine must stop.

To do a check of the muffler

WARNING: Do not use a product that has a defective muffler or a muffler that is in bad condition.
WARNING: Do not use a product if the spark arrestor mesh on the muffler is missing or defective.
1. Examine the muffler for damages and defects.
2. Make sure that the muffler is correctly attached to the product.

To do a check of the vibration damping system

1. Make sure that there are no cracks or deformation on the vibration damping units.
2. Make sure that the vibration damping units are correctly attached to the engine unit and handle unit.
Refer to
Product overview on page 2
about where the vibration damping system is on your product.
for information

To do a check of the start/stop switch

1. Start the engine.
24
3. If your product has a special spark arrestor mesh, clean the spark arrestor mesh weekly.
4. Replace a damaged spark arrestor mesh.
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Carburetor with adjustment limitations

1/2
1/2
H
L
Note: If you do not know which carburetor type that you have on your product, speak to your servicing dealer.

Carburetor adjustment

Because of environmental and emissions laws, your product has adjustment limitations on the carburetor adjuster screws. This decreases the harmful exhaust fumes from your product. You can only turn the adjustment screws maximum ½ turn.

Basic adjustments and run-in

The basic carburetor adjustments are done at the factory. For the recommended idle speed, refer to
Technical data on page 34
CAUTION: Do not operate the product at too high speed during the first 10 hours of operation.
.
must also be safely below the speed at which the saw chain starts to rotate.
WARNING: If the saw chain does not stop when you turn the idle speed screw, speak to your servicing dealer. Do not use the product until it is correctly adjusted.

To adjust the high speed needle (H)

The engine is adjusted at the factory to operate at sea level. At higher altitudes, in different weather or different temperatures it can be necessary to adjust the high speed needle.
• Turn the high speed needle to make adjustments.
CAUTION: Do not turn the high speed needle screw across the adjustment limitation stop. This can cause damage to the piston and the cylinder.

To examine if the carburetor is correctly adjusted

• Make sure that the product has the correct acceleration capacity.
• Make sure that the product 4-cycles a little at full throttle.
• Make sure that the saw chain does not rotate at idle speed.
• If the product is not easy to start or has less acceleration capacity, adjust the low and high speed needles.
CAUTION: If the saw chain rotates at idle speed, turn the idle speed screw counterclockwise until the saw chain stops.

To adjust the low speed needle (L)

• Turn the low speed needle clockwise until stop.
If the product has a bad acceleration capacity
Note: or if the idle speed is not correct, turn the low speed needle counterclockwise. Turn the low speed needle until the acceleration capacity and idle speed is correct.

To adjust the idle speed screw (T)

1. Start the product.
2. Turn the idle speed screw clockwise until the saw chain starts to rotate.
3. Turn the idle speed screw counterclockwise until the saw chain stops.
The idle speed is correctly adjusted when the
Note: engine runs correctly in all positions. The idle speed
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CAUTION: cause damage to the engine.
Incorrect adjustments can

To replace a broken or worn starter rope

1. Loosen the screws to the starter housing.
2. Remove the starter housing.
25
3. Pull out the starter rope approximately 30 cm/12 in and put it in the notch on the pulley.
4. Let the pulley rotate slowly rearward to release the recoil spring.
5. Remove the center screw and remove the pulley.
WARNING: You must be careful when you replace the return spring or the starter rope. The recoil spring is in tension when it is wound up in the starter housing. If you are not careful, it can eject and cause injuries. Use protective glasses and protective gloves.
6. Remove the used starter rope from the handle and the pulley.
7. Attach a new starter rope to the pulley. Wind the starter rope approximately 3 turns around the pulley.
8. Pull the starter rope through the hole in the starter housing and the starter rope handle.
9. Attach the center screw in the center of the pulley.
10. Make a tight knot at the end of the starter rope.

To tighten the recoil spring

1. Put the starter rope into the notch in the pulley.
2. Turn the starter pulley approximately 2 turns clockwise.
3. Make sure that you can turn the pulley ½ turn after the starter rope is fully extended.
26
956 - 003 -

To assemble the starter housing on the product

1. Pull out the starter rope and put the starter in position against the crankcase.
2. Slowly release the starter rope until the pulley engages with the pawls.
3. Tighten the screws that hold the starter.

To clean the air filter

Clean the air filter regularly from dirt and dust. This prevents carburetor malfunctions, starting problems, loss of engine power, wear to engine parts and more fuel consumption than usual.
1. Remove the cylinder cover and the air filter.
2. Use a brush or shake the air filter clean. Use detergent and water to clean it fully.
Note: An air filter that is used for a long time can not be fully cleaned. Replace the air filter regularly and always replace a defective air filter.
3. Attach the air filter and make sure that the air filter seals tightly against the filter holder.

To do a check of the spark plug

CAUTION: Use the recommended spark plug. Refer to An incorrect spark plug can cause damage to the product.
1. If the product is not easy to start or to operate or if the product operates incorrectly at idle speed, examine the spark plug for unwanted materials. To decrease the risk of unwanted material on the spark plug electrodes, do these steps:
a) make sure that the idle speed is correctly
adjusted. b) make sure that the fuel mixture is correct. c) make sure that the air filter is clean.
2. Clean the spark plug if it is dirty.
3. Make sure that the electrode gap is correct. Refer to,
Technical data on page 34
4. Replace the spark plug monthly or more frequently if necessary.
Technical data on page 34
.
.

To sharpen the saw chain

Information about the guide bar and saw chain

WARNING: use or do maintenance on the saw chain. A saw chain that does not move can also cause injuries.
Use protective gloves when you
Because of different work conditions, weather or
Note: season, your product can be used with different types of air filter. Speak to your servicing dealer for more information.
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Replace a worn or damaged guide bar or saw chain with the guide bar and saw chain combination recommended by Husqvarna. This is necessary to keep the safety functions of the product. Refer to
35
, for a list of replacement bar and chain
combinations that we recommend.
• Guide bar length, in/cm. Information about the guide bar length can usually be found on the rear end of the guide bar.
Accessories on page
27
• Number of teeth on bar tip sprocket (T).
PITCH =
D
D
2
A
B
• Chain pitch, in. The distance between the drive links of the saw chain must align with the distance of the teeth on the bar tip sprocket and drive sprocket.
• Number of drive links. The number of drive links is decided by the type of guide bar.
• Drive link width, mm/in.

General information about how to sharpen the cutters

Do not use a blunt saw chain. If the saw chain is blunt, you must apply more pressure to push the guide bar through the wood. If the saw chain is very blunt, there will be no wood chips but sawdust.
A sharp saw chain eats through the wood and the wood chips becomes long and thick.
The cutting tooth (A) and the depth gauge (B) together makes the cutting part of the saw chain, the cutter. The difference in height between the two gives the cutting depth (depth gauge setting).
• Bar groove width, in/mm. The groove width in guide bar must be the same as the chain drive links width.
• Chain oil hole and hole for chain tensioner. The guide bar must align with product.
28
When you sharpen the cutter, think about the following:
• Filing angle.
• Cutting angle.
• File position.
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• Round file diameter.
A
B
C
It is not easy to sharpen a saw chain correctly without the correct equipment. Use Husqvarna file gauge. This will help you to keep maximum cutting performance and the kickback risk at a minimum.
WARNING: The force of the kickback increases a lot if you do not follow the sharpening instructions.

General information about how to adjust the depth gauge setting

The depth gauge setting (C) decreases when you sharpen the cutting tooth (A). To keep maximum cutting performance you must remove filing material from the depth gauge (B) to receive the recommended depth gauge setting. See instructions about how to receive the correct depth gauge setting for your saw chain.
Accessories on page 35
for
Note: Refer to information about sharpening of the saw chain.
To sharpen the saw chain on page 27
for

To sharpen the cutters

1. Use a round file and a file gauge to sharpen the cutting teeth.
Note: Refer to information about which file and gauge that Husqvarna recommends for your saw chain.
2. Apply the file gauge correctly on to the cutter. Refer to the instruction supplied with the file gauge.
3. Move the file from the inner side of the cutting teeth and out. Decrease the pressure on the pull stroke.
Accessories on page 35
for
WARNING: The risk of kickback increases if the depth gauge setting is too large!

To adjust the depth gauge setting

Before you adjust the depth gauge setting or sharpen the cutters, refer to
adjust the depth gauge setting on page 29
instructions. We recommend you to adjust the depth gauge setting after each third operation that you sharpen the cutting teeth.
We recommend that you use our depth gauge tool to receive the correct depth gauge setting and bevel for the depth gauge.
1. Use a flat file and a depth gauge tool to adjust the depth gauge setting. Only use Husqvarna depth gauge tool to get the correct depth gauge setting and bevel for the depth gauge.
2. Put the depth gauge tool on the saw chain.
See the package of the depth gauge tool for
Note: more information about how to use the tool.
3. Use the flat file to remove the part of the depth gauge that extends through the depth gauge tool.
General information about how to
, for
4. Remove material from one side of all the cutting teeth.
5. Turn the product around and remove material on the other side.
6. Make sure that all cutting teeth are the same length.
956 - 003 -
29

To adjust the tension of the saw chain

WARNING: A saw chain with an incorrect tension can come loose from the guide bar and cause serious injury or death.
A saw chain becomes longer when you use it. Adjust the saw chain regularly.
1. Loosen the bar nuts that hold the clutch cover/chain brake. Use a wrench.
Note: Some models have only one bar nut.
2. Tighten the bar nuts by hand as tightly as you can.
3. Lift the front of the guide bar and turn the chain tensioning screw. Use a wrench.
4. Tighten the saw chain until it is tight against the guide bar but still can move easily.
5. Tighten the bar nuts using the wrench and lift the front of the guide bar at the same time.
6. Make sure you can pull the saw chain around freely by hand and that it does not hang from the guide bar.
2. If the saw chain lubrication is correct, you see a clear line of oil on the surface after 1 minute.
3. If the saw chain lubrication does not operate correctly, do a check of the guide bar. Refer to
a check of the guide bar on page 31
instructions. Speak to your servicing dealer if the maintenance steps does not help.
for
To do

To do a check of the rim sprocket

The clutch drum has a rim sprocket that can be replaced.
1. Make sure that the rim sprocket is not worn. Replace if necessary.
2. Replace the rim sprocket each time you replace the saw chain.

To lubricate the needle bearing

1. Pull the front hand guard rearward to disengage the chain brake.
2. Loosen the bar nuts and remove the clutch cover.
Some models have only one bar nut.
Note:
3. Put the product on a stable surface with the clutch drum up.
Refer to
Note: position of the chain tensioning screw on your product.
Product overview on page 2
for the

To do a check of the saw chain lubrication

1. Start the product and let it operate at ¾ throttle. Hold the bar approximately 20 cm/8 in above a surface of light color.
30
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