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
2956 - 003 -
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.
956 - 003 - 3
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
956 - 003 -
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
956 - 003 -
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.
6
956 - 003 -
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
956 - 003 -
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.
956 - 003 - 9
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, literTwo-stroke oil,
liter
2% (50:1)
50.10
100.20
150.30
200.40
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.
10956 - 003 -
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
956 - 003 -
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.
12
956 - 003 -
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.
956 - 003 -
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.
14
956 - 003 -
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.
956 - 003 - 15
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.
16956 - 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
956 - 003 -
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
18956 - 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.
956 - 003 -
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.
20956 - 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.
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
.
.
22956 - 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.
956 - 003 -
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.
956 - 003 -
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
956 - 003 -
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.
956 - 003 -
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.
956 - 003 -
• 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
956 - 003 -
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