Husqvarna AR19 User Manual
Operator´s manual
AR19
AR25
Please read these instructions carefully and make sure
you understand them before using the machine.
English
TABLE OF CONTENTS
Operator’s Manual for
Lawn Aerator AR19, AR25
Introduction.......................................................... 2
Congratulations ................................................. 2
Use................................................................... 2
Insure your machine ......................................... 2
Good service .................................................... 2
Serial number ................................................... 2
What is aeration? .............................................. 3
When should I use the removable weights? ...... 3
Should I water the lawn before aeration? .......... 3
Symbols and decals ............................................ 4
Decals and machine-bound instructions ........... 4
Location of decals ............................................5
Translation of instructions ................................ 5
Safety instructions .............................................. 6
General ............................................................ 6
Children ............................................................ 7
Preparations ..................................................... 8
Running ............................................................ 9
Movement/Transport ...................................... 10
Storage .......................................................... 10
Fuel system.................................................... 11
Maintenance .................................................. 12
Presentation ...................................................... 13
Main components and operating instruments 13
Engine ............................................................ 14
Controls on the handle ................................... 18
Adjusting the rear wheels ............................... 19
Weights .......................................................... 19
Running.............................................................. 20
Starting the engine ......................................... 20
Cutting the engine .......................................... 21
Aeration tips ................................................... 22
Before you start .............................................. 22
Aeration .......................................................... 22
Turning and maneuvering the lawn aerator.... 23
Operating on hills ........................................... 23
Maintenance ...................................................... 24
Maintenance schedule ................................... 24
Replacing the air filter .................................... 25
Cleaning the sludge reservoir ........................ 26
Idle adjustment............................................... 26
Adjusting the throttle cable ............................. 27
Replacing the throttle cable............................ 27
Ignition system ............................................... 28
Replacing the engine ..................................... 29
Replacing the clutch cable ............................. 29
Replacing and adjusting the drive belt ........... 30
Cam lock for the handle ................................. 31
Wheels ........................................................... 32
Tines and tine shaft........................................ 34
Chain .............................................................. 36
Cleaning and washing .................................... 37
Two minute rule .............................................. 37
Lubrication......................................................... 38
Lubrication schedule ......................................38
General .......................................................... 39
Engine oil ....................................................... 39
Oil change in reduction gear 1:6 .................... 40
Chain .............................................................. 41
Rear wheels ................................................... 41
Tines .............................................................. 41
Links and joints .............................................. 41
Adjustment for rear wheel depth/stability ....... 42
Cam lock for the handle ................................. 42
Handles with controls ..................................... 42
Assembly instructions...................................... 43
Assembly – Initial start-up .............................. 43
Storage ............................................................... 45
Winter storage ................................................ 45
Service ...........................................................45
Wiring diagram ..................................................46
Troubleshooting ................................................ 47
Technical data ................................................... 48
Service journal .................................................. 49
Delivery service.............................................. 49
After the first 20 hours .................................... 49
English – 1
INTRODUCTION
Congratulations
Thank you for purchasing a Husqvarna lawn care product. Through your confidence in us, you have chosen an
exceptionally high quality product.
This manual is a valuable document. It describes your new Husqvarna machine. Read the manual carefully
before attempting to use the machine. Following the instructions (use, service, maintenance, etc.) can
considerably increase the lifespan of your machine and even increase its resale value. Please contact your
dealer for more information.
If you sell your Husqvarna machine, make sure to give the operator’s manual to the new owner.
Use
The lawn aerator is used to aerate the turf in your lawn. Do not use the machine until you have read the
operator’s manual carefully, particularly the safety instructions.
Insure your machine
Contact your insurance company to check on insurance coverage for your new machine. You should have allinclusive insurance for liability, fire, damage and theft.
Good service
Husqvarna’s products are sold all over the world and only in specialized retail trade with complete service.
This ensures that you as a customer receive only the best support and service. Before the machine was
delivered it underwent inspection and was adjusted by your dealer. When you need spare parts or support in
service questions, guarantee issues, etc., please consult the following professional:
This Operator’s Manual belongs to machine with
serial number:
Engine number:
Serial number
The machine’s serial number can be found on the printed plate attached to the rear side panel of the machine.
The plate includes the following information:
• The machine’s type designation (MODEL).
• The machine’s serial number (S/N).
Please state the type designation and serial number when ordering spare parts.
The engine’s serial number is punched in the crankcase above the oil drainage screw.
The engine type is specified on the crankcase under the air filter but also appears on the decal on the starter.
Please state these when ordering spare engine parts.
2 – English
INTRODUCTION
What is aeration?
For your lawn to grow at its best, the roots need to be surrounded by air pockets in the soil so that oxygen,
water and nutrients can be absorbed. Air pockets in the lawn shrink as the earth is compacted by pedestrian
traffic, rainfall, irrigation, or construction and landscaping work. Mechanically removing small plugs (cores) of
soil and thatch increases the quantity of air in the soil considerably. In this manner, the aeration process
promotes new root growth and improves the lawn’s ability to absorb water and nutrients. The end result is a
healthier, more beautiful lawn.
When should I use the removable weights?
The soil conditions dictate whether extra machine weight will be required for effective aeration. The weights are
provided to give you added control and greater tine penetration.
Should I water the lawn before aeration?
Normally, it is not necessary to water the lawn before aerating. In extreme conditions, such as highly
compacted clay soil, a simple test can be used to determine whether you need to water before aerating. Use a
garden spade, weeding tool or a large screwdriver to test the ground’s hardness. You should be able to push the
tool 5 - 7.5 cm into the ground with little effort. If you are unable to do so, watering is advisable. Watering the
day before should give sufficient time for the soil to absorb the moisture. Use your hand tool to gauge the
effectiveness of your watering.
English – 3
SYMBOLS AND DECALS
WARNING!
Xxxx xxx xxxx xx xxxx x xxxx.
Used in this publication to notify the reader of a risk
of personal injury, particularly if the reader should
neglect to follow instructions given in the manual.
Decals and machine-bound instructions
IMPORTANT INFORMATION
Xxxx xxx xxxx xx xxxx x xxxx.
Used in this publication to notify the reader of a risk
of material damage, particularly if the reader should
neglect to follow instructions given in the manual.
Used also when there is a potential for misuse or
misassembly.
A. Model designation AR19
B. Weights
C. Wheel removal (AR25)
D1. Operating instructions (AR19)
D2. Operating instructions (AR25)
E. Caution list
F. Chain tension
4 – English
M
8011-236
G. WARNING carbon monoxide
H. Husqvarna logotype
I. DANGER Mind your feet
J. Model designation AR25
K. Husqvarna crown
M. European standard for machine safety
Location of decals
SYMBOLS AND DECALS
Translation of instructions
Decal E
Important information
Read and make sure you understand the Operator’s
Manual before use or maintenance.
To obtain a replacement manual, please contact your
dealer.
Observe all safety instructions; otherwise you may
injure yourself or others around you.
Make sure that the machine is in serviceable
condition prior to use.
Make sure that all protective devices are in place
when the machine is in use.
Stop the engine and wait until all machine movement
comes to a standstill before service, adjustment or
cleaning.
Do not run the engine in poorly ventilated spaces.
Make sure nobody is in the vicinity of the machine
before starting and during use.
8011-237
Decal G
Warning
Engine exhaust, some of its constituents and
certain vehicle components contain or emit
chemicals considered by the State of California to
cause cancer, birth defects or other reproductive
harm. The engine emits carbon monoxide, which is
a colorless, poisonous gas. Do not use the machine
in enclosed spaces.
Avoid slopes that are too steep to use the machine
safely.
Clear any debris from the lawn prior to use.
English – 5
SAFETY INSTRUCTIONS
General
The object of this manual is to help you use your
Husqvarna machine more safely and to give you
information about how to maintain your machine.
Please read the manual carefully before attempting
to use the machine.
If after reading the operator’s manual you are still
unsure about the safety risks associated with use of
the machine, you should not use the machine.
Please contact your dealer for more information.
These safety instructions only address the basics
for safe use. It would be impossible in the safety
instructions to describe all possible risk situations
that could arise when using the machine. You can,
however, prevent accidents by always using
common sense.
To obtain extra copies of the operator’s manual,
please contact your dealer.
WARNING!
Under no circumstances may the
original design of the machine be
modified without written approval
from the manufacturer. Such
modifications not only affect the
performance and durability of the
machine but may even pose a safety
risk for users and those in the
vicinity. Unauthorized
modifications to the design of the
machine may absolve the
manufacturer from liability for any
resulting personal injury or property
damage. Modifying the machine
without written approval from the
manufacturer may void the
guarantee.
IMPORTANT INFORMATION
Do not use the machine until you have read
the operator’s manual carefully and
understand the instructions given. All
maintenance work or adjustments not
described in this manual must be performed
by an authorized Husqvarna service
workshop.
• Read this manual carefully and make sure you
understand it before using the machine or
performing any maintenance. If the user cannot
read this manual, it is the responsibility of the
machine owner to explain the contents to the
user.
• Follow all safety instructions. Failure to do so
may result in injury to yourself or others.
• Accident prevention regulations, other general
safety regulations, occupational safety rules
and traffic regulations must be followed without
fail.
• All users shall be trained in use of the machine.
The owner is responsible for training users.
8011-150
Read this manual carefully before starting the machine.
• Engage an authorized Husqvarna workshop for
all service and repairs not described in this
manual.
6 – English
SAFETY INSTRUCTIONS
• Check that all safety decals are in place. See
the chapter ”Symbols and decals”.
• Learn how to use the machine and its controls
safely and learn to recognize the safety decals.
• Check that the machine is in serviceable
condition prior to use; see the chapter
”Maintenance/Maintenance schedule”.
• Only use the machine in daylight or in other
well-lit conditions. Keep the machine a safe
distance from holes or other irregularities in the
ground. Pay attention to other possible risks.
• Only allow the machine to be used by adults
who are familiar with its use.
• Never allow children or persons not trained in
the use of the machine to use or service it.
Local laws may regulate the age of the user.
• People and animals can distract you causing
you to lose control of the machine. For this
reason, you should always concentrate and
focus on the task at hand.
• Make sure that other people are nearby when
you are using the machine so that you can call
for help should an emergency arise.
WARNING!
Overexposure to vibration can lead
to circulatory or nerve damage,
particularly in people who have
impaired circulation. Contact your
doctor if you experience symptoms
that could have been caused by
overexposure to vibration.
Examples of common symptoms
include numbness, pain, muscle
weakness, change of skin color, or
an uncomfortable tingling
sensation. These symptoms appear
most frequently in the fingers,
hands or wrists.
• Never leave the machine unsupervised with the
engine running.
• Husqvarna original spare parts are designed
and specified to maintain high quality and
correct fit for optimal durability and lifespan.
From a safety point of view, you should only
use Husqvarna original spare parts.
• The machine is tested and approved only with
the equipment originally provided or
recommended by the manufacturer.
Children
• Serious accidents may occur if you fail to be on
guard for children in the vicinity of the machine.
Never assume that children will stay put where
you last saw them.
• Keep children away from the work area and
under close supervision by another adult.
• Keep an eye out and shut off the machine if
children enter the work area.
8011-148
Keep children away from the work area.
• Never allow children to operate the machine.
• Be particularly careful near corners, bushes,
trees or other objects that block your view.
• Keep children away from the machine.
8011-146
Keep children away from the machine.
English – 7
SAFETY INSTRUCTIONS
Preparations
• Make sure that you always have first aid
equipment close at hand when using the
machine.
• Make sure nobody else is in the vicinity of the
machine when you start the engine, engage the
drive or run the machine.
• Make sure animals and people maintain a safe
distance from the machine.
• Clear the area of objects such as stones, toys,
steel wire, etc. that may become caught in
moving machine parts and thrown out.
• Find and locate all fixed objects in the ground,
such as sprinkler systems, poles, water valves,
bases for washing lines, etc. Be certain to
check for hidden electrical cables or similar in
the surface of the lawn. Always run the
machine around these objects. Never
intentionally run the machine over foreign
objects.
8011-198
Clear the area of all extraneous objects that could be
thrown out by the machine’s moving parts.
• Make sure all guard plates and protective
cowlings are in place and intact when using the
machine.
• Never use the machine when barefoot. Always
wear protective shoes or protective boots with
anti-slip and preferably with steel toes.
• Wear approved ear-protection when running
the machine. Ask your dealer about approved
ear-protection.
• Makes sure no clothing, long hair or jewelry
can fasten in moving machine parts.
WARNING!
Always use approved protective clothing and approved protective equipment when
using the machine. Protective clothing and protective equipment cannot eliminate the
risk of accidents but wearing proper clothing and the correct equipment will reduce the
degree of injury should an accident occur. Ask your dealer about approved protective
clothing and approved protective equipment recommended by Husqvarna.
8011-292
Protective equipment.
8 – English
SAFETY INSTRUCTIONS
Running
WARNING!
The engine can become very hot. To
avoid being burned, you must turn
off the engine and wait until all
parts have cooled before touching
the engine.
• Do not use the machine on grades of more
than 20°.
• Slow down and be especially careful in slopes.
Make sure to run the machine in the
recommended direction in slopes; see the
chapter ”Running/Operating on hills”. Be careful
when working close to sudden changes in level.
• Do not use the machine if you are tired, if you
have consumed alcohol, or if you are taking
other drugs or medication that can affect your
vision, judgment or co-ordination.
• Never use the machine indoors or in spaces
lacking proper ventilation.
• Do not use the machine on any surface other
than grass.
• Only use the machine for aerating lawns. It is
not intended for any other use.
• Make sure you have a proper foothold when
using the machine, particularly when backing.
Walk, don’t run. Never work on wet grass. Poor
footholds may cause you to slip.
• Keep your hands and feet away from the work
tools.
8011-093
Do not use the machine on grades of more than 20°.
8011-152
The engine exhaust is poisonous. Never run the engine
indoors.
• Mind you keep your hands and feet away from
moving parts.
WARNING!
Engine exhaust, some of its constituents and certain vehicle components contain or
emit chemicals considered to cause cancer, birth defects or other reproductive harm.
The engine emits carbon monoxide, which is a colorless, poisonous gas. Do not use
the machine in enclosed spaces.
8011-091
Mind you keep your hands and feet away from moving
parts.
English – 9
SAFETY INSTRUCTIONS
• Smoking, open flames or sparks in the vicinity
of the machine are strictly forbidden. Gasoline
is extremely flammable and can result in
personal injury or fire.
• Stop and inspect the equipment if you run over
or into anything. If necessary, make repairs
before beginning again.
• Whatever happens, you should always park the
machine on even ground, disengage the drive,
turn off the engine and wait until all moving
parts have stopped before leaving the operating
position behind the machine.
Movement/Transport
• To turn and steer the machine, press down on
the handle and turn on the rear wheels.
• Turn off the engine and allow it to cool at least 2
minutes before transport.
8011-288
Smoking near the machine is strictly prohibited.
• Collapse the handle if the machine is equipped
with a collapsible handle.
• Do not lift the lawn aerator by hand. Use a
lifting crane or other suitable equipment to load
the machine.
• Be careful and use safe lifting and moving
techniques when loading/unloading the
machine.
• Fasten the machine properly in place with
approved fasteners, such as tension belts,
chains or rope. Always check that you are in
compliance with applicable traffic regulations
before transporting the machine.
Storage
• Allow the engine to cool before storing the
machine. Never store the machine near open
flame.
• Store the machine and fuel in such a way that
there is no risk that leaking fuel or fumes can
come in contact with flames or sparks from
electrical machines, electric engines, relays,
switches, boilers or similar.
• Store the machine in a locked space away from
children and adults untrained in use of the
machine.
10 – English
SAFETY INSTRUCTIONS
Fuel system
WARNING!
Gasoline and gasoline fumes are poisonous and extremely flammable. Be especially
careful when handling gasoline, as carelessness can result in personal injury or fire.
• Only store fuel in containers approved for the
purpose.
• Never remove the fuel cap and fill the fuel tank
while the engine is running.
• Always stop the engine when refueling.
• Do not smoke when filling the gasoline tank
and do not pour gasoline in the vicinity of
sparks or open flame.
• Never fill the fuel tank indoors.
• Before starting the machine after refueling, it
should be moved at least three meters from
the location where it was filled.
• Turn off the fuel supply for storage or transport.
• If leaks arise in the fuel system, the engine
must not be started until the problem has been
resolved.
• Check the fuel level before each use and leave
space for the fuel to expand, because the heat
from the engine and the sun may otherwise
cause the fuel to expand and overflow.
8011-144
Never fill the fuel tank indoors.
8011-036
Turn off the fuel supply for storage or transport.
• Avoid overfilling. If you spill gasoline on the
machine, wipe up the spill and wait until it has
evaporated before starting the engine. If you
spill gasoline on your clothing, change your
clothing.
8011-224
Check the fuel level before each use.
English – 11
SAFETY INSTRUCTIONS
Maintenance
• Never allow persons not trained in the use of
the machine to perform service on it.
• Always park the machine on even ground before
performing maintenance or making adjustments.
• Never make adjustments with the engine
running.
• Disengage the drive units, shut off the engine
and wait until all moving parts come to a
complete stop before making adjustments,
performing maintenance or cleaning the
machine.
• Disconnect the spark plug cable before
beginning repair work.
• Keep all components in serviceable condition
and make sure all nuts, bolts, etc. are tight.
Replace worn or damaged decals.
• Be careful when checking work tools. Use
gloves when performing maintenance work.
8011-027
• Do not disassemble the engine. This may
invalidate your guarantee. Please contact your
dealer if you have any questions regarding
service or guarantee matters. Follow all
maintenance instructions.
• Do not change the setting of governors and
avoid running the engine with overly high RPMs.
If you run the engine too fast, you risk
damaging the machine components.
• Do not modify safety equipment. Check
regularly to be sure it works properly. The
machine must not be run with defective or
disassembled safety equipment.
• The muffler is designed to maintain sound
levels at an approved level and to keep direct
exhaust away from the user. Exhaust gases
from the engine are extremely hot and may
contain sparks that can cause fires or burn the
user.
• Never use a machine with a defective muffler.
• Reduce the risk of fire by removing grass,
leaves and other debris that may have fastened
in the machine. Allow the machine to cool
before putting it in storage.
Disconnect the spark plug cable before repair work.
8011-154
Reduce the risk of fire by keeping the machine clean.
12 – English
PRESENTATION
Presentation
Congratulations on your choice of an exceptionally
high quality product. This operator’s manual
describes the Husqvarna lawn aerator. The machine
is available in two models: AR19 and AR25.
Both machines are equipped with a 4 hp Honda fourcycle engine.
AR19 is the smaller of the two machines (see
illustration). It is recognizable for its collapsible
handle.
AR25 is broader and has a fixed handle.
Main components and operating instruments
8011-068
1. Weight
2. Engine with reduction gear
3. Adjustment knob for rear wheel depth/stability
4. Rear wheel control
8011-242
5. Clutch handle
6. Handle
7. Weight
English – 13
PRESENTATION
Engine
Exterior engine components and operating
instruments:
1. Throttle
2. Starter
3. Starter handle
4. Fuel valve
5. Choke control
6. Air filter
7. Spark plug
8. Muffler
11. Oil dipstick engine
12. Oil drainage engine
13. Oil level guard
14. Engine switch
15. Fuel tank
16. Fuel filler cap
21. Reduction gear
22. Oil refill gear
23. Oil level gear
Throttle
The lever controls engine speed.
The image shows half throttle. Turning the lever to
the left increases throttle and to the right decreases
throttle.
Turning the lever completely to the right puts the
engine at idle. If the engine stalls in idle, the idle
speed can be adjusted; see the chapter
”Maintenance/Idle adjustment”.
8011-043
8011-100
14 – English
8011-034
PRESENTATION
Starter
The starter is of the magnapull type with spring
return. To replace the return spring or starter cord,
contact an authorized service workshop.
Starter handle
Misuse of the starter handle can damage the starter.
Never twist the starter cord around your hand. Pull
out the handle slowly until the gears mesh. Do not
pull out the starter cord completely and do not let
go of the starter handle when extended.
Fuel valve
The fuel valve opens and closes the connection
between the tank and the carburetor.
The illustration shows the tank valve closed; to
open, turn the lever completely to the right. There is
no middle position.
Turn off the valve when the machine is not in use to
avoid flooding the carburetor.
8011-044
The fuel valve is combined with a sludge reservoir.
For cleaning instructions see the chapter
”Maintenance/Cleaning the sludge reservoir”.
Choke control
The choke control opens and closes the choke valve
in the carburetor. This is only used to start a cold
engine.
The image shows the choke valve open; to close,
turn the lever to the left. The midway positions can
be used. When the engine starts, the lever can be
turned gradually to the right as long as it continues
to run smoothly. Forgetting the choke is evident as
the engine runs roughly and produces black smoke.
This also results in increased fuel consumption.
Air filter
The engine air filter is located under the cowling. It
consists of a foam rubber pre-filter and a paper filter
cartridge. See the chapter ”Maintenance/Replacing
the air filter” for cleaning instructions. Running the
machine with a dirty air filter will cause the engine to
run on partial choke and show the same symptoms
as a forgotten choke described above. It can also be
difficult to start.
8011-036
8011-035
8011-028
English – 15
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