520iRX
EN Operator's manual 2-33
Contents
Introduction..................................................................... 2
Safety..............................................................................4
Assembly...................................................................... 19
Operation...................................................................... 22
Maintenance................................................................. 26
Troubleshooting............................................................ 28
Transportation, storage and disposal........................... 29
Technical data.............................................................. 30
Accessories.................................................................. 31
Declaration of Conformity............................................. 32
Introduction
Product description
Husqvarna 520iRX is a battery grass trimmer with an
electrical motor.
Work is constantly in progress to increase your safety
and efficiency during operation. Speak to your servicing
dealer for more information.
Intended use
The product can be used with a grass blade or a trimmer
head to cut different types of vegetation. Do not use
the product for other tasks than grass trimming and
grass clearing. Use a grass blade or trimmer head to
cut grass.
Note: National or local regulations may regulate the
use. Comply to given regulations.
Product overview
3
29
28
27
26
30
22
21
25
13
24 23
20
16
15
17
17
32
13
8
5
9
4
7
14
10
6
19
18
1
2
31
11 12
33
1. Trimmer head
2. Cutting attachment guard
3. Shaft
4. Harness quick release
2 757 - 007 - 09.11.2022
5. Harness, hip pad
6. Handle adjustment
7. Handlebar
8. Power trigger
9. Power trigger lockout
10. Keypad
11. SavE button
12. Rotation direction button
13. Warning indicator (error LED)
14. Start and stop button
15. Cord
16. Battery charger
17. Power on and warning indicator (error LED)
18. 4 mm hex key
19. Socket wrench
20. Trimmer head
21. Battery release buttons
22. Battery
23. Battery status
24. Battery indicator button
25. Transport guard
26. Hole for locking pin 4 mm hex key
27. Drive disc
28. Blade
29. Support cup
30. Support flange
31. Locknut
32. Operator's manual
33. Loop hanger
Symbols on the product
WARNING! This product can be
dangerous! Careless or incorrect use can
result in serious injury to the operator
or others. It is very important that you
read and understand the contents of
the operator's manual. Please read the
operator’s manual carefully and make
sure you understand the instructions
before the product is used.
Use approved eye protection.
/min
Maximum speed of the output shaft.
The product agrees with the applicable
EC directives.
This product conforms to the applicable
UK regulations.
5
0
F
T
15
m
50F
T
1
5 m
Keep a minimum distance of 15 m to
persons and animals during operation of
the product.
Use approved protective gloves.
Use heavy-duty slip-resistant boots.
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
distance to persons and animals during
operation of the product.
Symbols on the product or its packaging
indicate that this product cannot be
handled as domestic waste. This product
must be deposited at an appropriate
recycling facility.
The product can cause objects to eject,
which can cause injury.
Use flexible cutting wire as trimmer line.
Do not use metal cutting elements.
The arrows show the limit for the handle
position.
Protected against splashing water.
Direct current.
Noise emission to the environment label
as per EU (also including New South
Wales legislation) and UK directives
and regulations. The guaranteed sound
power level of the product is specified in
757 - 007 - 09.11.2022 3
Technical data on page 30
and on the
label.
yyyywwxxxx The rating plate shows the serial
number. yyyy is the production year,
ww is the production week and xxxx
is the sequential number.
Symbols on the battery and/or on the
battery charger
Recycle this product at a recy-
cling station for electrical and
electronic equipment. (Applies
to Europe only)
Fail-safe transformer.
Use and keep the battery charger indoors
only.
Double insulation.
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 power tool safety
warnings
WARNING: Read all
safety warnings and all
instructions. Failure to
follow the warnings and
instructions may result in
electric shock, fire and/or
serious injury.
Note: Save all warnings and
instructions for future reference.
The term "power tool" in the
warnings refers to your mains-
4 757 - 007 - 09.11.2022
operated (corded) power tool
or battery-operated (cordless)
power tool.
Check before starting
•
Always remove the battery
to prevent the product being
started by accident. Always
remove the battery before any
maintenance on the product.
•
Before using the product and
after any impact, check for
signs of wear or damage and
repair as necessary.
•
Inspect the working area.
Remove all loose objects,
such as stones, broken glass,
nails, steel wire, string etc.
that could be thrown out or
become wrapped around the
cutter or cutter guard.
•
Check the motor for dirt and
cracks. Clean off grass and
leaves from the motor using a
brush. Gloves should be worn
when necessary.
•
Check that the trimmer head
is completely attached to the
trimmer.
•
Check that the product is in
perfect working order. Check
that all nuts and screws are
tight.
•
Check that the trimmer
head and trimmer guard are
not damaged or cracked.
Replace the trimmer head or
trimmer guard if the have
been exposed to impact or
are cracked. Always use
the recommended guard for
the cutting attachment you
are using. See chapter on
Technical data.
•
The product operator must
ensure that no people or
animals come closer than 15
meters while working. When
several operators are working
in the same area the safety
distance should be at least 15
meters.
•
Carry out an overall
inspection of the product
before use. See the
maintenance schedule.
•
National or local regulations
may regulate the use. Comply
to given regulations.
Personal safety
•
The cutting tool does not stop
immediately after the product
is turned off.
•
The product is only designed
for trimming.
•
Keep bystanders away.
•
Stay alert, watch what you
are doing and use common
sense when operating a
power tool. Do not use a
power tool while you are
tired or under the influence of
drugs, alcohol or medication.
757 - 007 - 09.11.2022
5
A moment of inattention while
operating power tools may
result in serious personal
injury.
•
This appliance is not
intended for use by person
(including children) with
reduced physical, sensory
or mental capabilities, or
lack of experience and
knowledge, unless they have
been given supervision or
instruction concerning use
of the appliance by a
person responsible for their
safety. Children should be
supervised to ensure that
they do not play with the
appliance.
•
Never allow children or other
persons not trained in the
use of the product and/or the
battery to use or service it.
Local laws may regulate the
age of the user.
•
Store the equipment in a
lockable area so that it is
out of reach of children and
unauthorized persons.
•
Keep hands and feet away
from the cutting area at all
times and especially when
switching on the motor.
•
Dress properly. Do not wear
loose clothing or jewelry.
Keep your hair, clothing and
gloves away from moving
parts. Loose clothes, jewelry
or long hair can be caught in
moving parts.
•
Wear personal protective
equipment. See instructions
under the "Personal
protective equipment"
heading.
•
Always use face or dust mask
if operation is dusty.
•
Turn off the product when
it has to be moved. Always
remove the battery when
passing the machine to
another person.
•
Keep in mind that it is
you, the operator that is
responsible for not exposing
people or their property to
accidents or hazards.
•
The transport guard must
always be used for storage
and transport.
Power tool use and care
•
The only accessories you can
operate with this product are
the cutting attachments we
recommend in the technical
data chapter.
•
Never use a product that has
been modified in any way
from its original specification.
Never use the product
near explosive or flammable
materials.
•
Never use a product that is
faulty. Carry out the safety
6
757 - 007 - 09.11.2022
checks, maintenance and
service instructions described
in this manual. Some
maintenance and service
measures must be carried
out by trained and qualified
specialists. See instructions
under the Maintenance
heading.
•
Only use original spare parts.
•
Always ensure that ventilation
openings are kept clear of
debris.
•
Keep handles dry, clean and
free from oil and grease.
•
All covers, guards and
handles must be fitted before
starting.
•
Only use the machine in
daylight or in other well-lit
conditions.
•
Do not overreach. Keep
proper footing and balance at
all times.
•
Don't force the product. It will
do the job better and with less
likelihood of injury at the rate
for which it was designed.
•
Working in bad weather is
tiring and often brings added
risk. It is not recommended
to use the product in very
bad weather, for instance,
in dense fog, in heavy rain,
strong winds, intense cold,
risk of lightning.
•
If the product starts vibrating
abnormally, stop the product
and remove the battery.
•
Avoid Unintentional Starting
– Don’t carry appliance with
finger on switch.
•
Store Idle Appliances Indoors
– When not in use, appliances
should be stored indoors
•
Walk, never run.
Always use common sense
It is not possible to cover every
conceivable situation you can
face. 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.
WARNING: Never allow
children to use or
be in the vicinity of
the machine. Since the
machine is easy to start,
children may be able to
start it if they are not kept
under full surveillance.
This can mean a risk of
serious personal injury.
Therefore disconnect
the battery when the
757 - 007 - 09.11.2022 7
machine is not under
close supervision.
General safety instructions
WARNING: Read the
warning instructions that
follow before you use the
product.
•
Remove the battery to
prevent the product from
being started by accident.
•
This product is a dangerous
tool if you are not careful
or if you use the product
incorrectly. This product can
cause serious injury or death
to the operator or others.
•
Do not use the product
if it is changed from its
initial specification. Do not
change a part of the product
without approval from the
manufacturer. Only use parts
that are approved by the
manufacturer. Injury or death
is a possible result of
incorrect maintenance.
•
Do a check of the product
before use. See,
Safety
devices on the product on
page 14
and
Maintenance
on page 26
. Do not use
a defective product. Do the
safety checks, maintenance
and service instructions
described in this manual.
•
Children should be
supervised to ensure that
they do not play with the
product. Never allow children
or other persons not trained in
the use of the product and/or
the battery to use or service
it. Local laws may regulate
the age of the user.
•
Keep the product in a locked
area to prevent access for
children or persons that are
not approved.
•
Store the product out of reach
of children.
•
Under no circumstances
may the design of the
product be modified without
the permission of the
manufacturer. Always use
original accessories. Non-
authorized modifications
and/or accessories can result
in serious personal injury or
the death of the operator and
others.
Note: National or Local laws
can regulate the use. Comply to
given regulations.
8 757 - 007 - 09.11.2022
Safety instructions for assembly
Assembly of blades and trimmer
heads
WARNING: When you
install the cutting
attachment it is very
important that the raised
section on the drive disc/
support flange engages
correctly in the centre
hole of the cutting
attachment. If the cutting
attachment is install
incorrectly it can result
in serious and/or fatal
personal injury.
WARNING: Never use
a cutting attachment
without an approved
guard. See the chapter
on Technical data. If an
incorrect or faulty guard
is fitted this can cause
serious personal injury.
Safety instructions for operation
WARNING: Read the
warning instructions that
follow before you use the
product.
•
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.
•
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
judgment.
•
Faulty cutting attachment can
increase the risk of accidents.
•
Do not allow children to use
or be in the vicinity of the
product. Since the product
is easy to start, children
may be able to start it if
they are not kept under full
surveillance. This can mean a
risk of serious personal injury.
Disconnect the battery when
the product is not under close
supervision.
•
Ensure that no people or
animals come closer than 15
metres while you work. When
757 - 007 - 09.11.2022
9
several operators are working
in the same area the safety
distance should be at least 15
metres. Otherwise there is a
risk of serious personal injury.
Stop the product immediately
if anyone approaches. Never
swing the product around
without first checking behind
you to make sure that no one
is within the safety zone.
•
Ensure that people, animals
or other things can not affect
your control of the product
or that they do not come
in contact with the cutting
attachment or loose objects
that are thrown out by the
cutting attachment. However,
do not use the product unless
you are able to call for help in
the event of an accident.
•
Always inspect the working
area. Remove all loose
objects such as stones,
broken glass, nails, steel
wire, string, etc., that could
be thrown out or become
wrapped around the cutting
attachment.
•
Make sure that you can move
and stand safely. Check
the area around you for
possible obstacles (roots,
rocks, branches, ditches,
etcetera) in case you have to
move suddenly. Take great
care when you work on
sloping ground.
•
Keep a good balance and a
firm foothold at all times. Do
not overreach.
•
Deactivate the product before
you move to another area.
•
Never put the product down
unless you have deactivated
it and removed the battery.
Do not leave the product
unsupervised when it is
switched on.
•
Remove the battery before
you pass the product to
another person.
•
Make sure that no clothes
or parts of the body come
in contact with the cutting
attachment when the product
is activated. Keep the product
below waist level.
•
If anything jams in the
cutting attachment while you
operate the product, stop
and deactivate the product.
Make sure that the cutting
attachment stops completely.
Remove the battery before
you clean, inspect or repair
the product and/or the cutting
equipment. There is a risk of
burns as the gear housing
can become very hot. Use
gloves when working with the
cutting attachments.
10
757 - 007 - 09.11.2022
•
Keep your hands and
feet away from the cutting
attachment until it has
stopped completely when the
product is deactivated.
•
Watch out for stumps of
branches that can be thrown
out when you cut. Do not cut
to close to the ground where
stones and other objects can
be thrown out.
•
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
which can cause blindness or
serious injury.
•
Listen out for warning
signals or shouts when
you wear hearing protection.
Always remove your hearing
protection as soon as the
product stops.
•
Never work from a ladder,
stool or any other raised
position that is not fully
secured.
•
If any unwanted vibrations
occur, tap out new line to give
the line the correct length to
stop the vibrations.
•
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
colour or condition. These
symptoms usually show in the
fingers, hands or wrists.
•
Always hold the product with
both hands. Hold the product
on the right side of your body.
•
Do not remove the cut
material, or let other persons
remove cut material, while the
product is on or the cutting
equipment rotates, as this can
result in serious injury.
•
Always stop the product,
remove the battery 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.
•
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
757 - 007 - 09.11.2022
11
implant manufacturer before
operating this machine.
•
Release the power trigger
after each working operation
to save battery power.
•
Don’t force the product. It will
do the job better and with less
likelihood of a risk of injury
at the rate for which it was
designed.
•
If any foreign object is hit or
if vibrations occur stop the
product immediately. Remove
the battery from the product
and check that the product is
not damaged.
•
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.
•
Do not use grass blades
or grass knifes on woody
steems.
•
When working with a
brushcutter the harness
should always be worn.
Otherwise you will be unable
to control the brushcutter
safely and this can result in
injury to yourself or others.
Never use a harness with a
defective quick release.
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
right equipment.
•
Use a protective helmet
where there is a risk of falling
objects.
•
Long term exposure to
noise can result in damaged
12
757 - 007 - 09.11.2022
hearing. In general, battery
powered products are
relatively quiet but damage
can result from a combination
of noise level and long usage.
recommends that operators
use hearing protectors when
using products for a longer
coherent time of a day.
Continual and regular users
should have their hearing
checked regularly.
WARNING: Hearing
protectors limit the
ability to hear sounds
and warning signals.
•
Use approved eye protection.
If you use a visor, you must
also use approved protective
goggles. Approved protective
goggles must comply with
the ANSI Z87.1 standard in
the USAs or EN 166 in EU
countries.
• Use a visor for face
protection. A visor is not
enough for protection of the
eyes.
+
•
Use gloves when necessary,
for example when you attach,
examine or clean the cutting
equipment.
•
Use sturdy non-slip boots.
•
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 wear
jewelry, short pants, sandals
or go with bare feet. Put your
hair up safely above shoulder
level.
•
Keep first aid equipment
close at hand.
Cutting attachment
WARNING: Remove
the battery and
make sure that the
cutting attachment stops
completely before you
work on any part of the
cutting attachment.
WARNING: Use correct
cutting attachment.
Only use the cutting
attachment with the
757 - 007 - 09.11.2022 13
guards we recommend,
refer to
Accessories
on page 31
. Make
sure that the cutting
attachment is sharpened
correctly. A cutting
attachment that is
not sharpened correctly
increases the risk of
blade thrust.
WARNING: An
incorrectly sharpened
or damaged blade
increases the risk of
accidents. Keep the teeth
of the blade correctly
sharpened. Follow the
instructions and use the
recommended file gauge.
CAUTION: An incorrectly
set saw blade increases
the risk of jamming and
blade thrust. This can
damage the saw blade.
Keep the correct setting
on the saw blade. Follow
the instructions and use
the recommended setting
tool.
Wear protective gloves when
the cutting attachment is
handled.
•
Use the saw blade to cut
fibrous types of wood.
•
Use the blades and grass
knives to cut coarse grass.
•
Use the trimmer head to trim
grass.
•
Check the cutting attachment
for damage or cracks.
Replace a damaged cutting
attachment.
Trimmer head
• Always use the correct trimmer head, cutting
attachments and always use the recommended
trimmer line. Refer to
Accessories on page 31
and
the assembly in the end of the Manual.
• Make sure that the cutter on the trimmer guard is not
damaged.
• Make sure that the trimmer line is wound tightly
and equally around the drum to prevent unusual
vibrations from the product. Different cord lengths
can result in vibrations that are not necessary. Tap
the trimmer head to get correct length on the cord.
To increase the life of the cord it can be soaked in water
for 2 days or more before assembly. This will make the
cord more resistant.
Safety devices on the product
WARNING: Read the
warning instructions that
follow before you use the
product.
•
In this section the product’s
safety features, its purpose
and how checks and
maintenance should be
carried out to ensure
that it operates correctly.
See instructions under the
heading
Product overview on
page 2
to find where these
14
757 - 007 - 09.11.2022
parts are located on your
product.
•
The life span of the product
can be reduced and the risk
of accidents can increase if
product maintenance is not
carried out correctly and if
service and/or repairs are not
carried out professionally. If
you need further information
please contact your nearest
servicing dealer.
•
Never use a product with
defective safety components.
The product's safety
equipment must be inspected
and maintained as described
in this section. If your product
fails any of these checks,
contact your service agent to
get it repaired.
•
All servicing and repair work
on the product requires
special training. This is
especially true of the
product′s safety equipment.
If your product fails any of
the checks described below
you must contact your service
agent. When you buy any of
our products we guarantee
the availability of professional
repairs and service. If the
retailer who sells your product
is not a servicing dealer, ask
him for the address of your
nearest service agent.
To do a check of the keypad
1. Press and hold the start/stop button (A).
A
B C
a) The product is switched on when the LED (B) is
lit.
b) The product is switched off when the LED (B) is
out.
2. See
Troubleshooting on page 28
if the warning
indicator (C) is lit or flashes.
To do a check of the power trigger lockout
The power trigger lockout is designed to prevent
accidental operation. When you release the handle, the
power trigger and the power trigger lockout both move
back to their original positions.
A
B
1. Make sure that the power trigger is locked when the
lock is in its original position.
2. Press the power trigger and make sure it returns to
its original position when you release it.
757 - 007 - 09.11.2022
15
3. Make sure that the power trigger and the lock moves
freely and that the return spring works properly.
4. Start the product, see
To start the product on page
23
.
5. Apply full throttle.
6. Release the power trigger and make sure that the
cutting attachment stops and remains still.
To do a check of the cutting attachment guard
WARNING: Do not use
a cutting attachment
without an approved
and correctly attached
cutting attachment guard.
Always use the
recommended cutting
attachment guard for the
cutting attachment that
you use, see
Product
overview on page 2
. If
an incorrect or faulty
cutting attachment guard
is attached this can
cause serious personal
injury.
The cutting attachment guard stops objects that ejects in
the direction of the operator. It also prevents injuries that
occur if you touch the cutting attachment.
1. Stop the motor.
2. Do a visual check for damages, for example cracks.
3. Replace the cutting attachment guard if it is
damaged.
To do a check of the locknut
WARNING: Stop the motor,
use protective gloves
and be careful around
the sharp edges of the
cutting attachment.
• Make sure that the locknut is attached and tightened
correctly. See
To attach and remove the locknut on
page 21
.
Quick release function of the harness
WARNING: Do not use
the harness if the
quick release function
is defective. Make
sure that the quick
release function operates
correctly when you adjust
the product.
WARNING: If the product
is not safely attached to
the harness, you can not
control the product and
that can result in injury to
you or others.
16 757 - 007 - 09.11.2022
The quick release function is at
the front of the harness. The
harness straps must always
stay at the correct position.
In an emergency, the quick
release function helps you to
remove the product safely.
Battery safety
WARNING: Read the
warning instructions that
follow before you use the
product.
•
Only use the BLi battery.
Refer to
Accessories on page
31
. The battery is software
encrypted.
•
Use the BLi battery that
is rechargeable as a power
supply for the related
Husqvarna products only. To
prevent injury, do not use the
battery as a power supply for
other devices.
•
Risk of electrical shock.
Do not connect the battery
terminals to keys, coins,
screws or other metal. This
can cause a short circuit of
the battery.
•
Do not use non-rechargeable
batteries.
•
Do not put objects into the air
slots of the battery.
•
Keep the battery away from
sunlight, heat or open flame.
The battery can cause burns
and/or chemical burns.
•
Keep the battery away
from microwaves and high
pressure.
•
Do not try to disassemble or
break the battery.
•
If the battery leaks, do not
let the liquid touch your body
or eyes. If you have touched
the liquid, clean the area with
a large quantity of water and
soap, and get medical aid. If
you get liquid in your eyes, do
not rub but flush with water
for a minimum of 15 minutes
and get medical aid.
•
Use the battery in
temperatures between -10 °C
(14 °F) and 40 °C (114 °F).
•
Do not clean the battery
or the battery charger with
water. Refer to
To clean the
product, the battery and the
battery charger on page 27
.
•
Do not use a defective or
damaged battery.
757 - 007 - 09.11.2022
17
•
Keep batteries in storage
away from metal objects such
as nails, screws or jewelry.
•
Keep the battery away from
children.
Battery charger safety
WARNING: Read the
warning instructions that
follow before you use the
product.
•
Risk of electrical shock or
short circuit if the safety
instructions are not obeyed.
•
Do not use other battery
chargers than the one
supplied for your product.
Only use QC chargers when
you charge BLi replacement
batteries.
•
Do not try to disassemble the
battery charger.
•
Do not use a defective or
damaged battery charger.
•
Do not lift the battery
charger by the power cord.
To disconnect the battery
charger from a mains socket,
pull out the plug. Do not pull
the power cord.
•
Keep all cables and extension
leads away from water, oil
and sharp edges. Make sure
that the cable is not caught
between objects, for example,
doors, fences or equivalent.
•
Do not use the battery
charger near flammable
materials or materials that
can cause corrosion. Make
sure that the battery charger
is not covered. Pull out the
plug to the battery charger if
there is smoke or fire.
•
Only charge the battery
indoors in a location with
good airflow and away from
sunlight. Do not charge the
battery outdoors. Do not
charge the battery in wet
conditions.
•
Only use the battery charger
where the temperature is
between 5 °C (41 °F) and 40
°C (104 °F). Use the charger
in an environment which has
a good airflow, dry and free
from dust.
•
Do not put objects into the
cooling slots of the battery
charger.
•
Do not connect the battery
charger terminals to metal
objects as this can short
circuit the battery charger.
•
Use approved mains sockets
that are not damaged. Make
sure that the cord of
the battery charger is not
damaged. If extension cables
are used, make sure that
the extension cables are not
damaged.
18
757 - 007 - 09.11.2022
Safety instructions for
maintenance
WARNING: Read the
warning instructions that
follow before you do
maintenance on the
product.
•
Remove the battery before
you do maintenance, other
checks or assemble the
product.
•
The operator must only
do the maintenance and
servicing shown in this
operator's manual. Turn to
your servicing dealer for
maintenance and servicing of
a larger extension.
•
Do not clean the battery
or the battery charger with
water. Strong detergent can
cause damage to the plastic.
•
If you do not do maintenance,
it decreases the life cycle of
the product and increases the
risk of accidents.
•
Special training is necessary
for all servicing and repair
work, especially for the safety
devices on the product. If not
all checks in this operator's
manual are approved after
you have done maintenance,
turn to your servicing dealer.
We guarantee that there
are professional repairs and
servicing available for your
product.
•
Only use original spare parts.
Assembly
Introduction
WARNING: Read and understand the
safety chapter before you assemble the
product.
To assemble the handlebar
1. Remove the knob and attach the handlebar as given
in the illustration.
2. Tighten the knob lightly.
3. Put on the harness and hang the product from the
suspension point.
757 - 007 - 09.11.2022 19
4. Adjust the handle to put the product in a good work
position.
5. Tighten the knob fully.
To assemble the loop hanger
1. Push the lock piece (A) into the loop hanger.
A
2. Put the loop hanger on the shaft.
3. Connect the ends of the loop hanger.
4. Install the bolt.
5. Put the knob on the bolt.
6. Tighten the knob.
To assemble the trimmer guard
1. Install the correct trimmer guard for the trimmer
head, refer to
Accessories on page 31
.
2. Hang the trimmer guard on the hook on the plate
holder (A).
3. Bend the trimmer guard around the shaft and attach
it with the bolt (B) on the opposite side of the shaft.
A
B
To assemble the blade
CAUTION: Only use the approved
blade guard for the blades. Refer to
Accessories on page 31
.
1. Put the gear of the product on a flat surface to make
sure that the blade is assembled correctly.
2. Attach the blade guard (A) onto the shaft, refer to
To
assemble the trimmer guard on page 20
.
A
B
D
E
F
G
C
3. Install the drive disc (B) on the output shaft.
4. Turn the output shaft until one of the holes in the
drive disc aligns with the related hole in the gear
housing.
5. Tighten the locking bolt (C) with the hex key to lock
the shaft.
6. Put the blade (D) and support cup (E) on the output
shaft.
7. Put the cup washer (F) on the output shaft.
20
757 - 007 - 09.11.2022
8. Install the nut (G). Hold the shaft of the wrench near
the blade guard as much as possible. To tighten
the nut, you must turn the wrench counterclockwise
which is the opposite direction of rotation. Tighten
the nut to a torque of 35-50 Nm (3.5-5 kpm).
To attach 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 thread.
• To attach, tighten the lock nut in the opposite
direction to the direction of rotation of the cutting
attachment.
• To remove the locking nut, undo the lock nut in the
same direction as the cutting attachment rotates.
• To loose and tighten the locknut, use a socket
spanner with a long shaft. The arrow in the picture
shows the area where you should operate the socket
spanner.
WARNING: When you loose and
tighten the locknut there is a risk of
injury from the teeth of the saw blade.
You should therefore always ensure that
your hand is shielded by the blade guard
when you do this.
Note: Make sure that you can not turn the locknut by
hand. Replace the nut if the nylon lining does not have
a resistance of a minimum of 1.5 Nm. The nut should
be replaced after it has been put on approximately 10
times.
To adjust the harness
WARNING:
The product must always
be correctly attached to the harness. Do not
use a defective harness.
1. Put on the harness.
2. Connect the product to the harness.
3. Adjust the harness for the best work position.
4. Adjust the side straps to make the product weigh
equally on your shoulders.
5. Adjust the harness until the cutting attachment is
parallel to the ground.
757 - 007 - 09.11.2022
21
6. Let the cutting attachment lightly touch the ground.
Adjust the harness clamp to balance the product
correctly.
Note: If you use a grass blade, it must balance
approximately 10 cm /4 in above the ground.
Operation
Introduction
WARNING: Read and understand the
safety chapter before you use the product.
To examine the product before
operation
• Examine the motor for dirt and cracks. Use a brush
to remove grass and leaves from the engine. Wear
protective gloves when necessary.
• Make sure that the trimmer head is fully attached to
the product.
• Do the safety inspections, maintenance and
servicing that are given in this manual.
• Make sure that the product is not damaged. Examine
that all nuts and screws are tight.
• Make sure that there are no cracks on the blade.
Cracks usually occur when you make too sharp
corners at the bottom of the teeth while you sharpen
the blade. Cracks can also occur if you use the blade
with blunt teeth. Replace the blade if it is damaged.
• Examine the support flange for cracks. Replace the
support flange if it is damaged.
• Make sure that the locking force on the locknut is not
decreased. The locknut must have a locking force at
a minimum of 1.5 Nm. The tightening torque of the
locknut must be between 35-50 Nm.
• Examine the blade guard for damages or cracks.
Replace the blade guard if it has been hit or if it has
cracks. Do not use the product without a guard or a
defective guard.
• 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.
• Make sure that all covers, guards, handles and the
cutting equipment are correctly attached and not
damaged before you start the product.
22
757 - 007 - 09.11.2022
To connect the battery charger
1. Connect the battery charger to the voltage and
frequency that is specified on the rating plate.
2. Put the plug in a grounded socket outlet. The LED
on the battery charger flashes green one time.
Note: The battery does not charge if the battery
temperature is more than 50 °C/122 °F. If the
temperature is more than 50 °C/122 °F, the battery
charger makes the battery become cool before the
battery charges.
To charge the battery
Note: Charge the battery if it is the first time that you
use it. A new battery is only 30% charged.
1. Make sure that the battery is dry.
2. Put the battery in the battery charger.
3. Make sure that the green charging light on the
battery charger comes on. That means that the
battery is connected correctly to the battery charger.
4. When all LEDs on the battery come on, the battery is
fully charged.
5. To disconnect the battery charger from the mains
socket, pull the plug. Do not pull the cable.
6. Remove the battery from the battery charger.
Note:
Refer to the battery and battery charger
manuals for more information.
To connect the battery to the product
WARNING: Only use Husqvarna
original batteries with the product.
1. Make sure that the battery is fully charged.
2. Push the battery into the battery holder of the
product. The battery locks into position when you
hear a click.
CAUTION: If the battery does not
move easily into the battery holder, the
battery is not installed correctly. This can
cause damage to the product.
3. Make sure that the battery is installed correctly.
Battery information
Refer to the operator's manual of the battery for
information about how to use the battery.
To start the product
Note:
The product identifies the cutting attachment
when the cutting attachment is changed, is started and
the throttle is pressed. The product stops and the LED
flashes until the throttle is released and moves back to
its initial position. The cutting attachment is at this time
identified and prepared for operation.
1. Press and hold the start button until the green LED is
lit.
2. Use the power trigger to control the speed.
757 - 007 - 09.11.2022
23
To operate the product
Automatic shutdown function
The product has an automatic shutdown function that
stops the product if the product is not used. The green
LED for start/stop indication goes off and the product
stops after 120 seconds.
To start the SavE function
The product has a power saving function. The SavE
function gives the longest operation time from the
battery.
1. Push the SavE button to start the function. The
green LED comes on to show that the function is
on.
2. Push the SavE button again to stop the SavE
function.
To change the operation direction of the
trimmer head
It is possible to change the operation direction of the
trimmer head. This can be done at full speed or at stop
position. In the factory, the trimmer head is set to turn
clockwise. The green LED is off when the trimmer head
turns clockwise.
1. Push the operation direction button to make the
trimmer head turn counterclockwise. The green LED
is on when the trimmer head turns counterclockwise.
Note:
It is easier to tap out the trimmer line to make it
longer when the trimmer head turns clockwise.
To loosen cut material from the grass blade/grass cutter
If a grass blade/grass cutter is used, the rotation
direction is counterclockwise. A green LED shows that
the grass blade/grass cutter rotates counterclockwise.
Change rotation direction to clockwise to loosen the cut
material from the grass blade/grass cutter.
1. Push the rotation direction button to change the
rotation direction.
Note: When the rotation direction is changed to
clockwise, cut material is loosened from the grass blade/
grass cutter. The speed of the grass blade/grass cutter
decreases for a short period of time before it rotates
counterclockwise again.
To balance the product
• Connect the harness to the support hook (A) or the
loop hanger (B) on the product.
B
A
• Keep the cutting attachment parallel to the ground.
• The product is correctly balanced when the blade is
at cutting height near the ground.
To trim grass 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.
24
757 - 007 - 09.11.2022
4. Use 80 % throttle when you cut grass near objects.
To clear grass
1. Keep the trimmer head above the ground.
2. Tilt the trimmer head.
3. Cut with the end of the trimmer line around objects in
the work area.
CAUTION: Cut grass. Other objects
that are hit by the trimmer line, increases
the wear on the trimmer line.
4. Use 80% speed when you cut and clear vegetation.
This decreases the wear on the trimmer head and
trimmer line.
To cut the grass
1. Make sure that the trimmer line is parallel to the
ground when you cut the grass.
2. Do not push the trimmer head to the ground. This
can cause damage to the product.
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.
To clear grass with a grass blade
1. Keep your feet apart during operation of the product.
Make sure feet are tightly against the ground.
2. Put the support cup lightly on the ground. This
prevents the blade from touching the ground.
3. Use a sideway movement from right to left for a clear
stroke. Use the left side of the blade (between 8 and
12 o'clock) to cut.
4. Angle the blade to the left when you clear grass.
Note:
The grass collects easily in a line.
757 - 007 - 09.11.2022 25
5. Use a sideway movement from left to right for the
return stroke.
6. Do the work rhythmically.
7. Move forward and keep feet tightly against the
ground.
8. Stop the engine.
9. Remove the product from the clip on the harness.
10. Put the product on the ground.
11. Collect the cut material.
To stop the product
1. Release the power trigger or the power trigger
lockout.
2. Push the start/stop button until the green LED is off.
3. Push the release buttons on the battery and pull the
battery out.
To set the handlebar in transport
position
1. Loosen the knob.
2. Turn the handlebar clockwise until the throttle handle
touches the battery.
3. Turn the handlebar around the shaft.
4. Tighten the knob.
Maintenance
Introduction
WARNING: Read and understand the
safety chapter before you do maintenance
on the product.
Maintenance schedule
WARNING: Remove the battery before
you do maintenance.
The following is a list of the maintenance steps that you
must do on the product. See
Maintenance on page 26
for more information.
Maintenance Daily Weekly Monthly
Clean the external parts of the product with a dry cloth. Do not use water. X
Examine that the start and stop button works correctly and is not damaged. X
Make sure that the power trigger and the power trigger lockout function correctly
from a safety point of view.
X
Make sure that all controls work and are not damaged. X
Keep the handles dry, clean and free from oil and grease. X
26 757 - 007 - 09.11.2022
Maintenance Daily Weekly Monthly
Make sure that the cutting attachment is not damaged. Replace the cutting
attachment if it is damaged.
X
Make sure that the cutting attachment guard is not damaged. Replace the cut-
ting attachment guard if it is damaged.
X
Make sure that the screws and nuts are tight. X
Make sure that the battery release buttons on the battery works and locks the
battery in the product.
X
Examine that the battery charger is not damaged and function correctly. X
Make sure that the battery is not damaged. X
Make sure that the battery is charged. X
Make sure that the battery charger is not damaged. X
Examine all cables, couplings and connections. Make sure they are not dam-
aged and free from dirt.
X
Do a check of the connections between the battery and the product. Do a check
of the connection between the battery and the battery charger.
X
To examine the battery and the battery
charger
1. Examine the battery for damages, for example
cracks.
2. Examine the battery charger for damages, for
example cracks.
3. Make sure that the connection cord of the battery
charger is not damaged and that there are no cracks
in it.
To clean the product, the battery and
the battery charger
1. Clean the product with a dry cloth after use.
2. Clean the battery and battery charger with a dry
cloth. Keep the battery guide tracks clean.
3. Make sure that the terminals on the battery and the
battery charger are clean before the battery is put in
the battery charger or the product.
To replace the trimmer head
Note: To increase the life of the cord it can be soaked
in water for a couple of days before it is assembled. This
will make the cord tougher.
1. Press the snap-in clips on the trimmer head and
remove the trimmer head and trimmer line.
2. Pull out the line chute assembly.
757 - 007 - 09.11.2022 27
3. Remove the nut that holds the trimmer head and the
drive disc.
4. Replace the trimmer head.
5. Install the nut.
6. Install the line chute assembly.
7. Install the trimmer head.
To sharpen the grass knife and grass
blade
WARNING: Stop the product. Use
protective gloves.
WARNING: Always discard a blade
that is damaged. Do not try to make a bent
or twisted blade straight and use it again.
• To sharpen the grass knife or grass blade correctly,
refer to the instructions that come with the cutting
attachment.
• Sharpen all edges equally to keep the balance.
• Use a single-cut flat file.
Troubleshooting
Keypad
LED display Possible faults Possible action
Green activate LED flashing. Low battery voltage. Charge the battery.
Identifying the cutting tool. Release the throttle.
Red error LED flashing. The power trigger and the acti-
vate button are pressed at the
same time.
Release the power trigger and the product is
active.
Overload. The cutting attachment is jammed. deacti-
vate the product.
Remove the battery. Clean the cutting at-
tachment from unwanted materials.
Temperature deviation. Let the product cool down.
The product does not start. Dirt in the battery connectors. Clean the battery connectors with com-
pressed air or a soft brush.
Error LED is lit with red light. The product needs servicing. Contact your servicing agent.
28 757 - 007 - 09.11.2022
Battery
Problem Possible faults Possible solution
Green LED flashes. Low battery voltage. Charge the battery.
Red error LED flashes. The battery is empty. Charge the battery.
Temperature deviation. Use the battery in temperatures between
-10°C (14°F) and 40°C (104°F).
Overvoltage. Remove the battery from the battery charger.
Red error LED comes on. Cell difference is to much (1V). Speak to your servicing dealer.
Battery charger
LED display
Possible faults Possible action
Error LED flashes Temperature deviation. Use the battery charger in temperatures between 5°C
(14°F) and 40°C (104°F).
Overvoltage. Make sure that the mains voltage is the same as the
shown voltage value on the rating plate on the product.
Remove the battery from the battery charger.
Error LED comes on Speak to your service agent.
Transportation, storage and disposal
Transportation and storage
• The supplied Li-ion batteries obey the Dangerous
Goods Legislation requirements.
• Obey the special requirement on package and labels
for commercial transportation, including by third
parties and forwarding agents.
• Speak to a person with special training in dangerous
material before you send the product. Obey all
applicable national regulations.
• Use tape on open contacts when you put the battery
in a package. Put the battery in the package tightly
to prevent movement.
• Remove the battery for storage or transportation.
• Put the battery and the battery charger in a space
that is dry and free from moisture and frost.
• Do not keep the battery in an area where static
electricity can occur. Do not keep the battery in a
metal box.
• Put the battery in storage where the temperature is
between 5°C/41°F and 25°C/77°F and away from
open sunlight.
• Put the battery charger in storage where the
temperature is between 5 °C/41 °F and 45°C/113°F
and away from open sunlight.
• Use the battery charger only when the surrounding
temperature is between 5°C/41°F and 40°C/104°F.
• Charge the battery 30% to 50% before you put it in
storage for long periods.
• Put the battery charger in storage in a space that is
closed and dry.
• Keep the battery away from the battery charger
during storage. Do not let children and other not
approved persons to touch the equipment. Keep the
equipment in a space that you can lock.
• Clean the product and do a full servicing before you
put the product in storage for a long time.
• Use the transportation guard on the product to
prevent injuries or damage on the product during
transportation and storage.
• Attach the product safely during transportation.
757 - 007 - 09.11.2022 29
Disposal of the battery, battery charger
and product
The symbol below means that the product is not
domestic waste. Recycle it at a recycling station
for electrical and electronic equipment. This helps to
prevent damage to the environment and to persons.
Speak to local authorities, domestic waste service or
your dealer for more information.
Note: The symbol shows on the product or package of
the product.
Technical data
Technical data
520iRX
Motor
Motor type BLDC (brushless) 36 V
Speed of output shaft, rpm 5500
Cutting width, mm 400
Weight
Weight without battery, kg 3.8
Weight with battery, kg 5.1
Water protection level
IPX4
1
Yes
Noise emissions
2
Sound power level, measured dB (A) 86
Sound power level, guaranteed L
WA
dB (A) 89
Noise levels
3
1
The Husqvarna Handheld Battery products marked with IPX4 fulfils these requirements on product approval
level
2
Noise emissions in the environment measured as sound power (L
WA
) in conformity with EC directive 2000/14/
EC. The difference between guaranteed and measured sound power is that the guaranteed sound power also
includes dispersion in the measurement result and the variations between different machines of the same
model according to Directive 2000/14/EC.
3
Reported data for equivalent sound pressure level for the product has a typical statistical dispersion (standard
deviation) of 3 dB (A).
30 757 - 007 - 09.11.2022
520iRX
Equivalent sound pressure level at the operator's ear, measured according to EN ISO
60335-2-91 and ISO 22868, dB (A):
72
Vibration levels
4
Vibration levels at handles, measured according to ISO 22867, m/s
2
Equipped with trimmer head (original), left/right 1.2/0.7
Equipped with grass blade (original), left/right 2.8/1.6
Approved batteries
Only use original BLi batteries for this product.
Approved battery chargers
Battery charger QC330 QC500
Input voltage, V 100-240 100-240
Frequency, Hz 50-60 50-60
Power, W 330 500
Accessories
Approved accessories
Approved accessory
Type Cutting attachment
guard, No
Article number
Trimmer head T25B (Ø 2.0 mm - Ø
2.4 mm Whisper line)
577 01 83-03
Grass blade/Grass cutter Grass blade 255-4 (Ø
255 4-teeth)
577 01 83-03
Grass blade 255-3 (Ø
255 3 teeth)
577 01 83-03
Loop hanger 590 28 23-01
4
Reported data for vibration level has a typical statistical dispersion (standard deviation) of 2 m/s
2
.
757 - 007 - 09.11.2022 31
Declaration of Conformity
EU Declaration of conformity
We, Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel:
+46-36-146500, declare on our sole responsibility that
the product:
Description Battery-operated Grass Trimmer
Brand
Husqvarna
Type / Model
520iRX
Identification Serial numbers dating from 2021 and onwards
complies fully with the following EU directives and
regulations:
Directive/Regulation Description
2006/42/EC "relating to machinery"
2014/30/EMC ”relating to electromagnetic compatibility”
2011/65/EU “relating to restriction of hazardous substances”
2000/14/EC "relating to outdoor noise"
and that the following standards and/or technical
specifications are applied: EN 60335-1:2012+A11:2014,
EN ISO 11806-1:2011, EN 55014-1:2017, EN
55014-2:1997+A1:2001+A2:2008, EN IEC 63000:2018.
Notified body: 0404, RISE SMP Svensk Maskinprovning
AB, Box 7035, SE-750 07 Uppsala, Sweden has
carried out EC type examination in accordance with the
machinery directive’s (2006/42/EC) article 12, point 3b.
Notified body: 0404, RISE SMP Svensk Maskinprovning
AB, Box 7035, SE-750 07 Uppsala, Sweden
has certified conformity with the council's directive
2000/14/EC, conformity assessment procedure: Annex
VI.
For information relating to noise emissions, refer to
Technical data on page 30
.
Huskvarna, 2022-04-11
Stefan Holmberg, R&D Director, Technology
Management, Husqvarna AB
Responsible for technical documentation
32 757 - 007 - 09.11.2022
Declaration of conformity
We, Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel:
+46-36-146500, declare on our sole responsibility that
the product:
Description Battery-operated Grass Trimmer
Brand
Husqvarna
Type / Model
520iRX
Identification Serial numbers dating from 2021 and onwards
complies fully with the following UK regulations:
Regulations
The Supply of Machinery (Safety) Regulations 2008
Electromagnetic Compatibility Regulations 2016
The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations
2012
The Noise Emission in the Environment by Equipment for use Outdoors Regulations 2001
and that the following standards and/or technical
specifications are applied: EN 60335-1:2012+A11:2014,
EN ISO 11806-1:2011, EN 55014-1:2017, EN
55014-2:1997+A1:2001+A2:2008, EN IEC 63000:2018.
Approved body: 0888, HORIBA MIRA Certification Ltd.
Watling Street, Nuneaton, Warwickshire, CV10 0TU,
UK has certified conformity with the Outdoor Noise
Regulations of 2001, conformity assessment procedure:
Schedule 9.
For information relating to noise emissions, refer to
Technical data on page 30
.
Huskvarna, 2022-04-11
Stefan Holmberg, R&D Director, Technology
Management, Husqvarna AB
Responsible for technical documentation
UK Importer:
Husqvarna UK Ltd
Preston Road, Co. Durham
DL5 6UP
757 - 007 - 09.11.2022 33
34 757 - 007 - 09.11.2022
757 - 007 - 09.11.2022 35
www.husqvarna.com
Original instructions
1142860-26
2022-11-21
