Husqvarna 128LX Operator's manual
EN Operator's manual 2-25
ES-MX Manual del usuario 26-50
FR-CA Manuel d’utilisation 51-75
128LX
LT28CSHV
Contents
Introduction..................................................................... 2
Safety..............................................................................5
Assembly...................................................................... 11
Operation...................................................................... 14
Maintenance................................................................. 20
Introduction
Troubleshooting............................................................ 23
Transportation and storage...........................................24
Technical data.............................................................. 24
Accessories.................................................................. 24
Product description
The product is a grass trimmer 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.
Intended use
Use the product with a grass blade or a trimmer head to
cut grass. Do not use the product for other tasks than
grass trimming and grass clearing.
Note: National or local regulations can set limit to the
operation of the product.
Only use the product with accessories that are approved
by the manufacturer. Refer to
Accessories on page 24
.
2 1570 - 001 - 14.10.2020
Product overview
18
19
20
1
24
21
23
25
26
28
27
1
3
5
6
7
8
10
11
12
13
15
17
9
16
14
4
2
22
1. Grass blade
2. Grease filler cap
3. Bevel gear
4. Cutting attachment guard
5. Shaft
6. J-handle
7. Harness clamp
8. Stop switch
9. Throttle trigger
10. Throttle trigger lockout
11. Spark plug cap and spark plug
12. Cylinder cover
13. Starter rope handle
14. Air purge bulb
15. Fuel tank
16. Air filter cover
17. Choke control
18. Locknut
19. Support flange
20. Support cup
21. Drive disc
22. Trimmer head
23. Combination wrench
24. Transport guard
25. Hex key
26. Locking pin
27. Harness
28. Operator's manual
1570 - 001 - 14.10.2020 3
Symbols on the product
5
0
FT
1
5
m
50F
T
15 m
EMISSION CONTROL INFORMATION
REFER TO OWNER'S MANUAL FOR
MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.
SN:
THIS ENGINE MEETS EXH AND EVP EMISSIONS REGULATIONS
FOR SMALL OFF ROAD ENGINES
FAMILY/DISP
PLT # SKU #
EMISSION COMPLIANCE PERIOD
(XX:XX)
WARNING! Be careful and use the product
correctly. This product can cause serious
injury or death to the operator or others.
Read the operator's manual carefully and
make sure that you understand the
instructions before use.
Use approved hearing protection. Use
approved eye protection.
Use approved protective gloves during
operation and maintenance. Use protective
boots or shoes with non-slip soles. Use
clothing of strong fabric and of full length.
Make sure that long hair is put above your
shoulders.
The product can cause objects to eject,
which can cause injury.
Maximum speed of the output shaft.
Keep a minimum distance of 15 m / 50 ft. to
persons and animals during operation of the
product.
Air purge bulb.
Choke.
yyyywwxxxx The rating plate shows the serial
number. yyyy is the production year
and ww is the production week.
Note: Other symbols/decals on the product refer to
certification requirements for other commercial areas.
EPA III
Risk of blade thrust if the cutting equipment
touches an object that it does not
immediately cut. The product can cut off
body parts. Keep a minimum of 15 m / 50 ft.
distance to persons and animals during
operation of the product.
The Emissions Compliance Period referred to on the
Emission Compliance label indicates the number of
operating hours for which the engine has been shown to
meet Federal and California emissions requirements.
The arrows shows the limit for the handle
position.
EMISSION CONTROL LABEL ABBREVIATIONS
ECS Emission control system ECM Engine control module
EXH/EVP Exhaust and Evapora-
tive
EM Engine modification N Nylon
(Autotune)
tems
C Coextruded (Multilayer)
General Exhaust emission control systems Evaporative emission control sys-
HRS Hours OC Oxidizing Catalyst P Treated HDPE or PE
REGS Regulations TWC Three way catalyst S Sealed
4 1570 - 001 - 14.10.2020
EMISSION CONTROL LABEL ABBREVIATIONS
WARNING!
The engine exhaust from this
product contains chemicals known
to the State of California to cause
cancer, birth defects or other
reproductive harm.
General Exhaust emission control systems Evaporative emission control sys-
SORE Small off road engines
US EPA United States Environ-
mental Protection Agency
CAL California
EVAP Evaporative
DISPL Displacement
tems
California Proposition 65
Product liability
As referred to in the product liability laws, we are not
liable for damages that our product causes if:
• the product is incorrectly repaired.
• the product is repaired with parts that are not from
the manufacturer or not approved by the
manufacturer.
• the product has an accessory that is not from the
manufacturer or not approved by the manufacturer.
• the product is not repaired at an approved service
center or by an approved authority.
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 clearing saw, brushcutter or trimmer can be
dangerous if used carelessly or incorrectly and can
cause serious injury or death to the operator or
others. It is extremely 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. Never use a product that has been
modified in any way from its original specification
and always use original accessories. Non-authorized
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.
• 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.
Safety instructions for assembly
WARNING: Read the warning instructions
that follow before you use the product.
1570 - 001 - 14.10.2020 5
• Use approved protective gloves when you assemble
the product and cutting attachment.
• Remove the spark plug cap from the spark plug
before you assemble the product.
• Make sure that the correct handlebar and cutting
attachment guard are assembled before you operate
the product.
• A defective or incorrect cutting attachment guard can
cause injury. Do not use a cutting attachment without
an approved cutting attachment guard.
• Attach the clutch cover and shaft correctly before
you start the product.
• The drive disc and support flange must engage
correctly in the center hole of the cutting attachment.
A cutting attachment that is attached incorrectly can
cause injury or death.
• Attach the harness to the product to prevent injury to
the operator or others.
Safety instructions for operation
WARNING: Read the warning instructions
that follow before you use the product.
• Never use a harness with a defective quick release.
When using a brush cutter it must always be hooked
securely to the harness. Otherwise you will be
unable to control the brush cutter safely and this can
result in injury to yourself or others.
• Always hold the product with both hands. Hold the
product on the right side of your body. Keep the
cutting attachment below waist level. Connect the
product to the suspension ring on the harness. Keep
all parts of your body away from the hot surfaces.
Keep all parts of your body away from the rotating
cutting attachment.
• Learn and understand the difference between
forestry clearing, grass clearing and grass trimming
before you use the product.
• Never use a product that has been modified in any
way from its original specification.
• Never use a product that is faulty. Carry out the
safety checks, maintenance and service instructions
described in this manual. Some maintenance and
service measures must be carried out by trained and
qualified specialists. Refer to
on page 20
• Use personal protective equipment. Refer to
.
Personal protective equipment on page 7
• Do not use the product in bad weather, such as
dense fog, heavy rain, strong wind, intense cold, etc.
Working in bad weather is tiring and often brings
added risks, such as icy ground, unpredictable felling
direction, etc.
• The only accessories you can operate with this
engine unit are the cutting attachments we
recommend. Refer to
Maintenance schedule
.
Accessories on page 24
.
• Watch out for thrown objects. Always wear approved
eye protection. Never lean over the cutting
attachment guard. Stones, rubbish, etc. can be
thrown up into the eyes causing blindness or serious
injury.
• Never use the product if you are tired, if you are ill, if
you have consumed alcohol, or if you are taking
other drugs or medication that can affect your vision,
judgement or coordination.
• Long-term exposure to noise can result in permanent
hearing loss. Always use approved hearing
protection.
• Listen for warning signals and loud voices when you
use hearing protection. Always remove your hearing
protection when the engine stops.
• Carry out an overall inspection of the product before
use. Refer to
page 14
• Never use the product if it is changed or defective.
• Make sure that the spark plug cap and ignition lead
are not damaged to prevent the risk of electrical
shock.
• Look around the work area to make sure that no
persons, animals or objects have a negative effect
on the safety of the operation of the product.
• Look around the work area to make sure that no
persons or animals touch the cutting attachment or
are hit by objects that are ejected from the cutting
attachment.
• Examine the work area. Remove all loose objects,
such as stones, broken glass, nails, steel wire and
string, that can eject or wind around the cutting
attachment.
• Do not use the product in a situation or location
where you can not get aid if an accident occurs.
• Do not use the product without a guard.
• Make sure that persons or animals keep a distance
of a minimum of 15 m/50 ft during work. Always look
behind you before you turn around with the product.
Stop the product immediately if a person or animal
enters the 15 m/50 ft safety zone. If more than one
operator does work in the same area, keep a
minimum safety distance of 15 m/50 ft.
• Make sure that you can move safely and have a safe
stance. Examine the area around you for obstacles
such as roots, rocks, branch and ditches. Be careful
during work on slopes.
• Do not overreach. Keep a stable position of the feet
and a good balance at all times.
• Before you start the product, put it on a flat surface,
at a minimum of 3 m from the fuel source and from
where you fill fuel. Make sure that there are no
objects near or touching the cutting attachment.
• If the cutting attachment rotates at idle speed, let a
service agent adjust it. Do not use the product until it
is adjusted or repaired.
• Look out for thrown objects. Always use approved
eye protection and keep away from the cutting
attachment guard. Stones and other small objects
Before you operate the product on
.
6
1570 - 001 - 14.10.2020
can eject into your eyes and cause blindness or
other injuries.
• Do not put the product down with the engine on
unless you have it in clear view.
• Do not remove the cut material, or let other persons
remove cut material, while the engine is on or the
cutting equipment rotates, as this can result in
serious injury.
• The bevel gear can get hot during use and may
remain so for a while afterwards. You could get burnt
if you touch it.
• Always stop the engine and make sure that the
cutting equipment does not rotate before you remove
material that is wound around the blade shaft or
caught between the guard and the cutting
attachment. The cutting equipment continues to
rotate even after the throttle has been released.
Ensure that the cutting attachment has stopped
completely and disconnect the spark plug cap before
you start to work on it.
• Be careful when you remove material from around
the cutting equipment. The bevel gear gets hot
during operation and can cause burn injuries.
• The exhaust fumes from the engine are hot and can
contain sparks. Risk of fire. Be careful around dry
and flammable material.
• Stop the engine before you move to a new work
area. Always attach the transport guard before you
move the equipment.
• Never use the product indoors or in spaces lacking
proper ventilation. Exhaust fumes contain carbon
monoxide, an odourless, poisonous and highly
dangerous ga can result in death due to asphyxiation
or carbon monoxide poisoning.
• Never allow children to use or be in the vicinity of the
product. As the product is equipped with a springloaded 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.
• Overexposure to vibration can lead to circulatory
damage or nerve damage in persons who have poor
circulation. Speak to your physician if you
experience symptoms of overexposure to vibration.
Such symptoms include numbness, loss of feeling,
tingling, pricking, pain, loss of strength, changes in
skin color or condition. These symptoms usually
show in the fingers, hands or wrists. The risk
increases at low temperatures.
• Check that the cutting equipment is correctly fitted
and adjusted.
• If you encounter a situation where you are uncertain
how to proceed you should ask an expert. Contact
your dealer or your service workshop.
• Avoid all usage which you consider to be beyond
your capability.
• Do not use the product unless you are able to call for
help in the event of an accident.
• Using an incorrect cutting attachment or an
incorrectly sharpened blade increases the risk of
blade thrust.
• Products fitted with grass blades can be thrown
violently to the side when the blade comes into
contact with a fixed object. This is called blade
thrust. A blade thrust can be violent enough to cause
the product and/or operator to be propelled in any
direction, and possibly lose control of the product.
Blade thrust can occur without warning if the product
snags, stalls or binds. Blade thrust is more likely to
occur in areas where it is difficult to see the material
being cut.
• Avoid cutting with the area of the blade between the
12 o'clock and 3 o'clock positions. Because of the
speed of rotation of the blade, blade thrust can occur
if you attempt to cut thick stems with this area of the
blade.
• Mufflers fitted with catalytic converters get very hot
during use and remain so for some time after
stopping. This also applies at idle speed. Contact
can result in burns to the skin. Remember the risk of
fire.
• Only use cutting attachments with the guards we
recommend. Refer to
Accessories on page 24
.
Personal protective equipment
WARNING: Read the warning instructions
that follow before you use the product.
• Always use approved personal protective equipment
when you use the product. Personal protective
equipment cannot fully prevent injury but it
decreases the degree of injury if an accident does
occur. Let your dealer help you select the correct
equipment.
• Use approved hearing protection.
• Use approved eye protection. If you use a visor, you
must also use approved protective goggles.
Approved protective goggles must comply with the
1570 - 001 - 14.10.2020
7
ANSI Z87.1 standard in the USA or EN 166 in EU
A
B
countries.
• Use gloves when it is necessary, for example when
you attach, examine or clean the cutting equipment.
• Use protective boots with steel toe-cap and non-slip
soles.
• Use clothing made of a strong fabric. Always use
heavy, long pants and long sleeves. Do not use
loose clothing that can catch on twigs and branches.
Do not use jewelry, short pants or sandals. Do not
go with bare feet. Put your hair up safely above
shoulder level.
• Keep first aid equipment near.
• Do not make changes to safety devices. Do not use
the product if protective covers, safety switches or
other protective devices are not attached or are
defective.
• For all service and repair work on the product,
especially for the safety devices, special training is
necessary. If the safety devices fail the checks given
in this operator's manual, you must let a service
agent help you. We guarantee that professional
repairs and service is available. If your dealer is not
a service agent, speak to them for information about
the nearest service agent.
• Do not use a cutting attachment without an approved
and correctly attached cutting attachment guard. See
Accessories on page 24
To do a check of the throttle trigger lockout
1. Make sure that the throttle trigger lockout (A) and
throttle trigger (B) move freely and that the return
spring works correctly.
2. Push down the throttle trigger lockout and make sure
that it goes back to its initial position when you
release it.
.
Safety devices on the product
For information about where to find the safety devices,
see
Introduction on page 2
WARNING:
that follow before you use the product.
• Do not use a product with defective safety devices.
Do a check of and do maintenance on the safety
devices regularly. If the safety devices are defective,
speak to your Husqvarna service agent.
8
.
Read the warning instructions
3. Make sure that the throttle trigger is locked at the
idle position when the throttle trigger lockout is
released.
1570 - 001 - 14.10.2020
4. Start the product and apply full throttle.
5. Release the throttle trigger and make sure that the
blades stop and stay stationary.
WARNING: If the blades move when the
throttle trigger is in the idle position, then
the carburetor idle speed must be
adjusted. Refer to
speed on page 21
To do a check of the stop switch
1. Start the engine.
2. Move the stop switch to the stop position and make
sure that the engine stops.
To do a check of the cutting attachment guard
The cutting attachment guard prevents injuries and
stops objects that eject in the direction of the operator.
1. Stop the engine.
2. Do a visual check for damages, for example cracks.
3. Replace the cutting attachment guard if it is
damaged.
To adjust the idle
.
3. Adjust the length of the harness until the support
hook is approximately level with your right hip.
To do a check of the muffler
WARNING: Do not use a product that has a
defective muffler.
WARNING: Do not use the product if the
spark arrester screen on the muffler is
missing or defective.
WARNING: The muffler becomes very hot
during and after operation and also at idle
speed. Use protective gloves to prevent
burn injuries.
The muffler keeps noise levels to a minimum and points
exhaust fumes away from the operator.
1. Stop the engine.
2. Examine the muffler for damage and defects.
WARNING:
muffler contain chemicals that can cause
cancer. Be careful not to touch these
elements if the muffler is damaged.
3. Make sure that the muffler is correctly attached to
the product.
The inner surfaces of the
To adjust the harness
Always use the harness when you operate the product.
The harness gives maximum control during operation of
the product. The harness decreases the risk of tiredness
in your arms and back.
WARNING: Do not use a defective harness.
1. Examine the harness for damage and wear. Always
replace a damaged harness.
2. Put on the harness.
1570 - 001 - 14.10.2020
9
4. Do a visual check of the spark arrester screen.
a) Replace the spark arrester screen if it is
damaged.
b) Clean the spark arrester screen if it is blocked.
CAUTION: If the spark arrester
screen is blocked the product
becomes too hot and this causes
damage to the cylinder and piston.
To install and remove the locknut
WARNING: Stop the engine, use protective
gloves and be careful around the sharp
edges of the cutting attachment.
A locknut is used to attach some types of cutting
attachments. The locknut has a left hand thread.
• To install the locknut, turn the locknut in the opposite
direction from the direction of rotation.
• To remove the locknut, remove the locknut in the
direction of rotation.
• To loosen or tighten the locknut, use a socket
wrench with a long shaft.
WARNING:
tighten the locknut there is a risk of injury
from the cutting attachment. Be careful
and do not touch the cutting attachment.
Note: Make sure that you can not turn the locknut by
hand. Replace the locknut after it has been put on
When you loosen and
approximately 10 times. The locknut must be replaced
after it has been put on approximately 10 times.
Cutting attachment
WARNING: Read the warning instructions
that follow before you use the product.
• Do the regular maintenance. Let an approved
service center regularly examine the cutting
attachment to do adjustments or repairs.
• The performance of the cutting attachment
increases.
• The life of the cutting attachment increases.
• The risk of accidents decreases.
• Only use an approved cutting attachment guard.
Refer to
• Do not use a damaged cutting attachment.
Accessories on page 24
Grass trimmer head
• Make sure that you wind the grass trimmer line
tightly and equally around the drum to decrease the
vibration.
• Use only the approved grass trimmer heads and
grass trimmer lines. Refer to
page 16
• Use a correct length of the grass trimmer line. A long
• Make sure that the cutter on the cutting attachment
• Soak the grass trimmer line in water for 2 days
• Refer to the instructions for the cutting attachment to
Grass blade
• Use correctly sharpened blades. An incorrectly
• Use correctly set blades. An incorrectly set blade
.
grass trimmer line uses more engine power than a
short grass trimmer line.
guard is not damaged.
before you attach the grass trimmer line to the
product. This increases the life of the grass trimmer
line.
use the correct procedure to load the cord and the
correct cord diameter.
sharpened or damaged blade increases the risk of
injury. Refer to the instructions on the blade
packaging.
increases the risk of injury and damage.
.
To trim the grass on
Fuel safety
WARNING:
that follow before you use the product.
• Do not mix the fuel indoor or near a heat source.
• Do not start the product if there is fuel or engine oil
on the product. Remove the unwanted fuel/oil and let
the product dry. Remove unwanted fuel from the
product.
Read the warning instructions
10
1570 - 001 - 14.10.2020
• If you spill fuel on your clothing, change clothing
immediately.
• Do not get fuel on your body, it can cause injury. If
you get fuel on your body, use a soap and water to
remove the fuel.
• Do not start the engine if you spill oil or fuel on the
product or on your body.
• Do not start the product if the engine has a leak.
Examine the engine for leaks regularly.
• Be careful with fuel. Fuel is flammable and the fumes
are explosive and can cause injuries or death.
• Do not breathe in the fuel fumes, it can cause injury.
Make sure that there is sufficient airflow.
• Do not smoke near the fuel or the engine.
• Do not put warm objects near the fuel or the engine.
• Do not add the fuel when the engine is on.
• Make sure that the engine is cool before you refuel.
• Before you refuel, open the fuel tank cap slowly and
release the pressure carefully.
• Make sure there are sufficient airflow when refueling
and mixing fuel (petrol and two-stroke oil) or draining
the fuel tank.
• Fuel and fuel vapor are highly flammable and can
cause serious injury when inhaled or allowed to
come into contact with the skin. For this reason,
observe caution when handling fuel and make sure
there is sufficient airflow.
• Tighten the fuel tank cap carefully or a fire can
occur.
• Move the product at a minimum of 3 m (10 ft) from
the position where you filled the tank before a start.
• Do not put too much fuel in the fuel tank.
• Make sure that a leak cannot occur when you move
the product or fuel container.
• Do not put the product or a fuel container where
there is an open flame, spark or pilot light. Make
sure that the storage area does not contain an open
flame.
• Only use approved containers when you move the
fuel or put the fuel into storage.
• Empty the fuel tank before long-term storage. Obey
the local law on where to dispose fuel.
• Clean the product before long-term storage.
• Remove the spark plug cap before you put the
product into storage to make sure that the engine
does not start accidentally.
Safety instructions for maintenance
WARNING: Read the warning instructions
that follow before you use the product.
• Stop the engine, make sure that the cutting
attachment stops and let the product cool down
before you do the maintenance.
• Disconnect the spark plug cap before you do the
maintenance.
• The exhaust fumes from the engine contain carbon
monoxide, an odorless, poisonous and very
dangerous gas that can cause death. Do not run the
product indoors or in closed spaces.
• The exhaust fumes from the engine are hot and can
contain sparks. Do not run the product indoors or
near flammable material.
• Accessories and changes to the product that are not
approved by the manufacturer, can cause serious
injury or death. Do not change the product. Always
use original accessories.
• If the maintenance is not done correctly and
regularly, there is an increased risk of injury and
damage to the product.
• Only do the maintenance as this operator's manual
recommends. Let an approved Husqvarna service
agent do all other servicing.
• Let an approved Husqvarna service agent do
servicing on the product regularly.
• Replace damaged, worn or broken parts.
Assembly
Introduction
WARNING: Before you assemble the
product, you must read and understand the
safety chapter.
WARNING: Remove the spark plug cable
from the spark plug before you assemble the
product.
1570 - 001 - 14.10.2020 11
To install the J-handle
WARNING: Use only grass blades or
trimmer heads with the J-handle.
1. Put the J-handle between the 2 arrows on the shaft.
A
F
G
E
D
C
B
A
To assemble the cutting equipment
The cutting equipment includes a cutting attachment and
a cutting attachment guard.
WARNING: Use protective gloves.
WARNING: Always use the cutting
attachment guard that is recommended for
the cutting attachment. See
page 24
.
Accessories on
2. Install the screw, the plate and the wing nut.
3. Adjust the J-handle to a good work position.
4. Tighten the wing nut fully.
To install the harness clamp
WARNING:
safely to the harness clamp when you
operate the product.
1. Put the 2 halves of the harness clamp onto the shaft
and align the screw holes.
The harness must be attached
WARNING: An incorrectly attached cutting
attachment can result in injury or death.
To install the cutting attachment guard and the grass blade
1. Put the cutting attachment guard (A) onto the shaft
and tighten the bolt.
2. Turn the output shaft to align one of the holes in the
drive disc (B) with the related hole in the gear
housing.
3. Put the locking pin (C) in the hole to lock the shaft.
4. Put the grass blade (D), the support cup (E) and the
support flange (F) on the output shaft.
2. Install the 2 screws.
3. Adjust the harness clamp to the correct position
4. Tighten the 2 screws fully.
12
above the arrow.
1570 - 001 - 14.10.2020
5. Make sure that the drive disc and support flange
A
C
B
F
D
E
F
engages correctly in the center hole of the grass
blade.
6. Attach the nut (G).
7. Tighten the nut with the socket wrench. Hold the
shaft of the socket wrench near the cutting
attachment guard. Tighten in the opposite direction
to how the cutting attachment rotates. Torque the nut
to 35–50 Nm.
To install the cutting attachment guard and the trimmer head
CAUTION: Make sure that the guard
extension is assembled.
4. Install the drive disc (D) on the output shaft.
5. Turn the output shaft until 1 of the holes in the drive
disc aligns with the related hole in the gear housing.
6. Put the locking pin (E) in the hole to lock the shaft.
7. Install the trimmer head (F) counterclockwise.
8. To remove the trimmer head and the cutting
attachment guard, follow the instructions in the
opposite sequence.
1. Install the cutting attachment guard (A) intended for
operation with the trimmer head.
2. Hang the cutting attachment guard on the 2 hooks
on the plate holder (B).
3. Bend the cutting attachment guard around the shaft
and tighten the screw (C) on the opposite side of the
shaft. Use the combination wrench to tighten the
screw.
1570 - 001 - 14.10.2020
13
Operation
Introduction
WARNING: Before you operate the product,
you must read and understand the safety
chapter.
Before you operate the product
• Examine the work area to make sure that you know
the type of terrain, the slope of the ground and if
there are obstacles such as stones, branches and
ditches.
• Do an overhaul inspection of the product.
• Do the safety inspections, maintenance and
servicing that are given in this manual.
• Make sure that all covers, guards, handles and the
cutting equipment are correctly attached and not
damaged.
• Make sure that there are no cracks at the bottom of
the grass blade teeth or by the center hole of the
blade. Replace the blade if it is damaged.
the cutting attachment sufficiently and you must
replace it.
• Examine the blade guard for damages or cracks.
Replace the blade guard if it has been hit or if it has
cracks.
• Examine the trimmer head and cutting attachment
guard for damages or cracks. Replace the trimmer
head and cutting attachment guard if they have been
hit or if they have cracks.
• Examine the support flange for cracks. Replace the
support flange if it is damaged.
• Make sure that the locknut can not be removed by
hand. If you can remove it by hand, it does not lock
14
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.
Premixed fuel
• Use Husqvarna premixed alkylate fuel 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
1570 - 001 - 14.10.2020
lower with this fuel, which keeps the components of
the engine more clean.
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.
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.
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
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
US gallon US fl. oz.
1 2 ½
2 1/2 6 ½
5 12 ⅞
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.
WARNING: Obey the procedure that follows
for your safety.
1. Stop the engine and let the engine become cool.
2. Clean the area around the fuel tank cap.
3. Shake the container and make sure that the fuel is
fully mixed.
4. Remove the fuel tank cap slowly to release the
pressure.
5. Fill the fuel tank.
CAUTION: Make sure that there is not
too much fuel in the fuel tank. The fuel
expands when it becomes hot.
6. Tighten the fuel tank cap carefully.
7. Clean fuel spillage on and around the product.
8. Move the product 3 m/10 ft or more away from the
refueling area and fuel source before you start the
engine.
1570 - 001 - 14.10.2020
15
Note: To see where the fuel tank is on your product,
refer to
Introduction on page 2
.
To prepare for grass clearing
1. Apply support to the product with the harness during
grass clearing.
2. Make sure that the cutting equipment is parallel to
the ground.
To start a cold engine
1. Push the air purge bulb 10 times.
2. Move choke control to the full choke position.
CAUTION:
until it stops. Do not let go of the starter
rope when it is fully extended. Release
the starter rope slowly. Failure to obey
these instructions can cause damage to
the engine.
5. Move the choke control to the half choke position.
6. Pull the starter rope handle until the engine starts.
7. Let the engine run for 10 seconds.
8. Move the choke control to the no choke position.
Do not pull the starter rope
To start a warm engine
1. Slowly push the air purge bulb 10 times.
2. Move the choke lever to the HALF CHOKE position.
3. Pull the starter rope handle quickly until the engine
runs.
4. Move the choke lever to the NO CHOKE position.
To stop the product
• Push the stop switch to stop the engine.
3. Hold the body of the product on the ground with your
left hand. Do not step on the product. Pull the starter
rope handle slowly until you feel some resistance.
Do not pull the throttle trigger while you start
Note:
the engine.
4. Pull the starter rope handle 3 times with force.
16
Note: The stop switch automatically goes back to its
initial position.
Grass trimming with a trimmer head
To trim the grass
1. Hold the trimmer head immediately above the
ground at an angle. Do not push the trimmer line into
the grass.
2. Decrease the length of the trimmer line by 10-12
cm / 4-4.75 in.
3. Decrease the engine speed to decrease the risk of
damage to plants.
1570 - 001 - 14.10.2020
4. Use 80 % throttle when you cut grass near objects.
To clear grass with a grass blade
1. Grass blades and grass cutters must not be used on
woody stems.
2. A grass blade is used for all types of tall or coarse
grass.
3. The grass is cut down with a sideways, swinging
movement, where the movement from right-to-left is
the clearing stoke and the movement from left-toright is the return stoke. Let the left-hand side of the
blade (between 8 and 12 o'clock) do the cutting.
4. if the blade is angled to the left when clearing grass,
the grass will collect in a line, which makes it easier
to collect, e.g. by raking.
5. Try to work rhythmically. Stand firmly with your feet
apart. Move forward after the return stoke and stand
firmly again.
6. Let the support cup rest lightly against the ground. It
is used to protect the blade from hitting the ground.
7. Reduce the risk of material wrapping around the
blade by always work at full throttle and avoid the
previously cut material during the return stoke.
8. Stop the engine, unclip the harness and place the
machine on the ground before you start to collect the
cut material.
To cut the grass
1. Make sure that the trimmer line is parallel to the
ground when you cut the grass.
3. Move the product from side to side when you cut
grass. Use full speed.
To sweep the grass
The airflow from the rotating trimmer line can be used to
remove cut grass from an area.
1. Hold the trimmer head and the trimmer line parallel
to the ground and above the ground.
2. Apply full throttle.
3. Move the trimmer head from side to side and sweep
the grass.
WARNING: Clean the trimmer head cover
each time you assemble new trimmer line to
prevent unbalance and vibrations in the
handles. Also do a check of the other parts
of the trimmer head and clean it if
necessary.
2. Do not push the trimmer head to the ground. This
can cause damage to the product.
1570 - 001 - 14.10.2020 17
To replace the trimmer line
6,0 m
18'
3,05 m
9'
2,0-2,4 mm
.079-.095"
10 cm
4"
18 1570 - 001 - 14.10.2020
6"
15 cm
1570 - 001 - 14.10.2020 19
"Click"
Maintenance
Introduction
WARNING: Read and understand the safety
chapter before you do maintenance on the
product.
CAUTION: To prevent accidental start,
remove the spark plug cap from the spark
plug before you do maintenance on the
product.
Maintenance schedule
Maintenance Daily Weekly Monthly
Clean the external surface. X
Examine the harness for damages. X
Do a check for damages on the suspension ring. X
Do a check of the throttle trigger lockout and the throttle trigger. Refer to
check of the throttle trigger lockout on page 8
Make sure that the cutting attachment does not rotate at idle speed. X
Do a check of the stop switch. Refer to
9
.
Examine the cutting attachment guard for damages and cracks. X
Make sure that the grass blade is aligned with the center. Make sure that the
grass blade is sharp and that the blade or center hole is not damaged.
Examine the trimmer head for damages and cracks. Replace if it is damaged. X
20 1570 - 001 - 14.10.2020
.
To do a
To do a check of the stop switch on page
X
X
X
Maintenance Daily Weekly Monthly
Examine the handle and handlebar for damage and make sure that they are attached correctly.
X
For cutting attachments with a support cup, tighten the locking screw fully. X
For cutting attachments with a locknut, tighten the locknut fully. X
Examine the transport guard for damage and make sure that it can be attached
correctly.
X
Examine the engine, the fuel tank and the fuel lines for leaks. X
Clean the air filter. Replace if it is necessary. X
Tighten nuts and screws. X
Examine the fuel filter for contamination and the fuel hose for cracks and other
defects. Replace if it is necessary.
X
Examine all cables and connections. X
Examine the starter and the starter rope for damages. X
Examine the vibration damping units for damages and cracks. X
Examine the spark plug. Refer to
To do a check of the spark plug on page 22
. X
Clean the cooling system. X
Make sure that the bevel gear is filled to ¾ with grease. X
Clean the external surface of the carburetor and the area around it. X
Clean the spark plug. Remove the spark plug and do a check of the electrode
gap.
X
Clean or replace the spark arrester screen on the muffler. X
Examine the clutch, clutch springs and the clutch drum for wear. Replace if it is
necessary.
X
Replace the spark plug. X
Lubricate the drive shaft.
Make sure that the safety release on the harness is not damaged and operates
correctly.
1
X
X
Examine and clean the spark arrester screen on the muffler. X
To adjust the idle speed
Your Husqvarna product is made to specifications that
decrease harmful emissions.
1. Make sure that the air filter is clean and that the air
filter cover is attached to the product.
1
At an interval of 6 months.
1570 - 001 - 14.10.2020 21
2. Turn the idle speed screw (T) clockwise until the
A
B
C
cutting attachment starts to turn.
3. Turn the idle speed screw (T) counterclockwise until
the cutting attachment stops.
The idle speed is correct when the engine operates
smoothly in all positions. The idle speed must be below
the speed when the cutting attachment starts to turn.
Note: Refer to
recommended idle speed.
Technical data on page 24
WARNING: If the cutting attachment does
not stop when you adjust the idle speed,
speak to your servicing dealer. Do not use
the product until it is correctly adjusted or
repaired.
for the
To clean the cooling system
CAUTION:
can make the product too hot, which can
cause damage to the product.
The parts of the cooling system are the air intake on the
starter (A), the cooling fins on the cylinder (B) and the
cylinder cover (C).
1. Clean the cooling system with a brush weekly or
more frequently if it is necessary.
A dirty or blocked cooling system
Bevel gear
The bevel gear is filled with the correct quantity of
grease at the factory. Before you use the product, make
sure that the bevel gear is 3/4 full of grease. Use
Husqvarna special grease.
The grease in the bevel gear is replaced by your
servicing dealer.
Air filter
Remove dust and dirt from the air filter to keep it clean
and prevent these problems:
• Carburetor malfunctions.
• Problems when you start the product.
• Loss of engine power.
• Increased wear to engine parts.
• Too much fuel consumption.
To clean the air filter
1. Remove the air filter cover and remove the filter.
2. Hit the filter against a flat surface to make the
particles fall off.
CAUTION: Do not use solvent or
compressed air to clean the air filter.
3. Put the air filter back. Make sure that the air filter
fully seals against the air filter holder.
4. Put the air filter cover back.
An air filter that is used for a long time cannot be
Note:
fully cleaned. Replace the air filter at regular intervals.
Always replace a damaged air filter.
2. Make sure that the cooling system is not dirty or
22
blocked.
To do a check of the spark plug
CAUTION:
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.
Use the recommended spark
Technical data on page 24
1570 - 001 - 14.10.2020
.
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 24
.
4. Replace the spark plug monthly or more frequently if
necessary.
Troubleshooting
The engine starts but stops again
Product part to examine Possible cause Action
Fuel tank Incorrect fuel type. Drain the fuel tank and fill with cor-
Carburetor The idle speed is not correct. Speak to your servicing dealer.
Air filter Clogged air filter. Clean or replace the air filter.
Fuel filter Clogged fuel filter. Replace the fuel filter.
The engine does not start
rect fuel.
Check
Stop switch. The stop switch is in the stop position. Set the stop switch to the start position.
Starter pawls. The starter pawls cannot move freely. Remove the starter cover and clean around
Fuel tank. Incorrect fuel type. Drain the fuel tank and fill with correct fuel.
Spark plug. The spark plug is dirty or wet. Make sure that the spark plug is dry and
1570 - 001 - 14.10.2020 23
Possible cause Procedure
the starter pawls.
Let an approved service agent help you.
clean.
The spark plug electrode gap is incorrect. Clean the spark plug. Make sure that the
electrode gap is correct. Make sure that the
spark plug has a supressor.
Refer to technical data for correct electrode
gap.
The spark plug is loose. Tighten the spark plug.
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