Husqvarna DT22 User Manual
Operator´s manual
DT22
Please read these instructions carefully and make sure
you understand them before using the machine.
English
TABLE OF CONTENTS
Operating Instructions for
Lawn Dethatcher DT22
with supplement for accessories
Introduction .................................................. 2
Congratulations ......................................... 2
Use ............................................................2
Insure your machine .................................. 2
Good service .............................................2
Serial number ............................................2
Symbols and decals.....................................3
Decals and machine-bound instructions ...3
Location of decals .....................................4
Translation of instructions .........................5
Safety instructions .......................................6
General use ...............................................6
Preparations ..............................................8
Operating ................................................... 9
Movement/Transport ...............................10
Storage ....................................................10
Children ...................................................10
Fuel system ............................................11
Maintenance ............................................12
Presentation ............................................... 13
Presentation ............................................ 13
Main components and operating
instruments ...........................................14
Engine ..................................................... 15
Cutting unit .............................................. 19
Blade versatility ....................................... 20
Setting blade height .................................20
Operation ....................................................21
Starting the engine .................................. 21
Cutting the engine ................................... 22
Before you start .......................................23
Starting ....................................................23
Finishing ..................................................23
Maintenance ............................................... 24
Maintenance schedule .............................24
Replacing the air filter .............................. 25
Cleaning the sludge reservoir ..................26
Idle adjustment ........................................26
Ignition system ......................................... 27
Cutting unit...............................................28
Two minute rule ....................................... 33
Cleaning and washing .............................32
Lubrication ................................................. 33
Lubrication schedule ................................33
General ....................................................33
Engine oil ................................................. 34
Depth knob with depth lock ...................... 35
Blades .....................................................35
Depth lever ..............................................35
Handle ..................................................... 35
Troubleshooting ........................................ 36
Storage ....................................................... 37
Winter storage .........................................37
Service ....................................................37
Technical data ............................................39
Assembly instructions ............................... 40
Assembly – delivery service .................... 40
Assembly directions,
catcher bag ........................................... 41
Assembly directions, seed hopper ..........42
Supplement ................................................44
Instructions for the catcher bag ...............44
Instructions for the seeder .......................46
Service journal ...........................................50
Delivery service ....................................... 50
After the first 20 hours ............................. 50
©2002 Husqvarna. All Rights Reserved.
Beatrice, NE. Printed in U.S.A.
2
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 dethatcher is used to remove the layer of thatch and surface-treat lawns, i.e. power-raking, demossing and collecting thatch in the form of old grass or moss. With an attachment, it can even be
used for seeding, both in initial sowing or overseeding.
Insure your machine
Contact your insurance company to check on insurance coverage for your new machine. You
should have all-inclusive 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 get 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 engine serial number and type when ordering replacement engine parts.
3
SYMBOLS AND DECALS
WARNING!
Xxxx xxx xxxx xx xxxx x xxxx.
IMPORTANT INFORMATION
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
1
4
5
8
6
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.
10
7
9
2
1. Husqvarna logo
2. Model designation DT22
3. Caution list
4. Height setting
5. Dial
3
8011-243
6. DANGER Watch your feet
7. Seed application chart
8. Warning for carbon monoxide
9. Open/Close
10. Transport/Engaged
4
Location of decals
SYMBOLS AND DECALS
8
1
DT03
2
10
6
DT02
1. Husqvarna logo
2. Model designation DT22
3. Caution list
4. Height adjust
5. Seed Dial
5
7
9
DT22RF
3
6
4
6. DANGER Watch your feet
7. Seed application chart
8. Warning for carbon monoxide
9. Open/Close
10. Transport/Engaged
5
SYMBOLS AND DECALS
Translation of instructions
Decal 7
Seed application chart
Values are approximate; quantities of seed depend
on the speed at which the machine is run. Faster
running speed results in sparser sowing.
Preparing the lawn
• Cut the grass to approximately 1-1.5 cm (1/2")
shorter than normal.
• Do not water before sowing.
• Remove the layer of old grass cuttings (thatch).
• Aerate the lawn with a ground aerator of the
coring type.
• Fertilize the lawn.
Seed application recommendations
• For best results, sow in two directions with a
45° angle between.
• Water generously immediately afterward and
continue watering moderately for 10–14 days
to keep the soil moist.
• After germination, water sporadically to
encourage root growth.
Decal 8
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.
Decal 3
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.
Avoid slopes that are too steep to use the machine
safely.
Clear any debris from the lawn prior to use.
6
SAFETY INSTRUCTIONS
General use
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.
8011-040
Read this manual carefully before starting the machine.
• All users shall be trained in use of the
machine. The owner is responsible for
training users.
• Engage an authorized Husqvarna
workshop for all service and repairs not
described in this manual.
7
SAFETY INSTRUCTIONS
• 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.
• 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.
• Only use the machine for sowing and
dethatching lawns. It is not intended for
any other use.
• 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.
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.
WARNING!
Overexposure to vibration may 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 feeling of tingling. These
symptoms appear most frequently in the
fingers, hands or wrists.
• 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.
• Never leave the machine unsupervised
with the engine running.
• Make sure that other people are nearby
when you are using the machine so that
you can call for help should an emergency
arise.
• The machine is tested and approved only
with the equipment originally provided or
recommended by the manufacturer.
8
Preparations
SAFETY INSTRUCTIONS
• Make sure that you always have first aid
equipment 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 could 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.
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.
• Make sure all guard plates and protective
cowlings are in place and intact when
using the machine.
• Makes sure no clothing, long hair or
jewelry can catch in moving machine parts.
• 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.
8011-198
8011-292
9
SAFETY INSTRUCTIONS
Running
• Do not use the machine on grades of
more than 20°. We recommend working
across slopes rather than up and down.
This will yield a more even result. Do not
leave the machine standing on a slope
unattended.
• 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 coordination.
• Never use the machine indoors or in
spaces lacking proper ventilation.
• Do not use the machine on any surface
other than grass.
• Make sure you have a proper foothold
when using the machine, particularly when
backing. Walk, don’t run. Never work on
wet grass. Poor traction may cause you to
slip.
• Keep your hands and feet away from
moving parts.
• Keep your hands and feet away from the
work tools.
8011-041
The engine exhaust is poisonous. Never run the engine
indoors.
8011-091
Keep your hands and feet away from moving parts.
• Slow down and be especially careful on
slopes. Make sure to run the machine in
the recommended direction on slopes. Be
careful when working close to sudden
changes in level.
• Smoking, open flames or sparks in the
vicinity of the machine are strictly
forbidden. Gasoline is extremely
flammable and carelessness in handling
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.
8011-289
Smoking near the machine is strictly prohibited.
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.
10
SAFETY INSTRUCTIONS
Movement/Transport
• To turn and steer the machine, press down on
the handle and turn on the back wheels.
• Turn off the engine and allow it to cool at least 2
minutes before transport.
• Collapse the handle if the machine is equipped
with a collapsible handle.
• Be careful and use safe lifting and moving
techniques when loading/unloading the
machine.
• We recommend having two people to lift 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 a
open flame.
• Store the machine with the fuel valve closed.
• 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.
8011-090
We recommend having two people to lift the machine.
8011-038
Keep children away from the machine.
Children
Serious accidents can 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 machine.
• 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.
• Never allow children to operate the machine.
• Be particularly careful near corners, bushes,
trees or other objects that block your view.
8011-039
Keep children away from the work area.
11
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
that purpose.
• Never remove the fuel cap and fill the fuel
tank when 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 10 feet (3 M)
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.
8011-037
Never fill the fuel tank indoors.
8011-036
Close the fuel valve.
• Check the fuel level before each use and
leave space for the fuel to expand,
because the heat from the engine and the
sun can otherwise cause the fuel to
expand and overflow.
• 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.
12
8011-019
Fueling always poses an element of risk.
SAFETY INSTRUCTIONS
Maintenance
• 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
Disconnect the spark plug cable before repair work.
• 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.
• Do not disassemble the engine. This can
invalidate your guarantee. 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 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.
WARNING!
Wait until all moving parts are completely
still before performing maintenance on
the machine.
Turn off the engine and remove the spark
plug cable.
8011-121
Keep the machine clean.
• Never use a machine with a defective
muffler.
• Reduce the risk of fire by removing grass,
leaves and other debris that may have
caught in the machine.
13
PRESENTATION
Presentation
Congratulations on your choice of an
exceptionally high quality product. This
operator’s manual describes the Husqvarna
dethatcher. The machine is available in one
basic design—DT22.
The machine is equipped with a 5.5 hp Honda
four-cycle engine.
DT22 can be equipped with a catcher. It is
available as an accessory at your Husqvarna
dealer. It can be mounted aftermarket; see the
chapter ”Assembly instructions/Assembly
directions, catcher bag
DT03
Alternatively, DT22 can be equipped with a
seeder. It is available as an accessory at your
Husqvarna dealer. It can be mounted
aftermarket; see the chapter ”Assembly
instructions/Assembly directions, seed hopper
SD22”.
It is not possible to use a catcher and seeder
simultaneously.
DT02
DT22RF
14
PRESENTATION
Main components and operating instruments
4
6
5
4
3
1
2
DT04
1. Engine
2. Depth knob with depth lock
3. Depth lever
4. Knob for collapsible handle
5. Clutch bail
6. Handle
15
PRESENTATION
Engine
Exterior engine components and operating
instruments
1. Throttle control
8
2. Starter
3. Starter handle
4. Fuel valve
5. Choke
6. Air filter
7. Spark plug
8. Muffler
11. Oil dipstick engine
12. Oil drainage engine
13. Oil level meter
14. Engine switch
15. Fuel tank
16. Fuel filler cap
7
6
5
2
15
14
16
4
3
1
8011-043
Throttle control
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”.
13
12
11
8011-252
8011-034
16
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.
The fuel valve is combined with a sludge reservoir.
For cleaning instructions see the chapter
”Maintenance/Cleaning the sludge reservoir”.
Choke
The choke 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.
8011-044
8011-036
8011-035
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/Air
filter replacement” 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.
8011-028
17
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