Husqvarna MZ28T User manual

Operator´s manual
MZ28T
Please read these instructions carefully and make sure
you understand them before using the machine. English

©2010 All rights reserved.
Orangeburg,SC.
To implement improvements, specifications and designs can be altered without prior notification.
Note that no legal demands can be placed based on the information contained in these instructions.
Use only original parts for repairs. The use of other parts voids the warranty.
Do not modify or install non-standard equipment to the unit without consent from the manufacturer.
Modifications to the unit may cause unsafe operations or damage the unit.
When this product is worn out and no longer used, it should
be returned to the reseller or other party for recycling.

INTRODUCTION ......................................................4
Driving and Transport on Public Roads .............5
Towing ................................................................5
Operating ...........................................................5
Good Service .....................................................6
SYMBOLS AND DECALS.........................................7
SAFETY ....................................................................9
Safety Instructions..............................................9
Personal Safety Equipment ..............................11
Slope Operation ...............................................11
Safe Handling of Gasoline ...............................13
General Maintenance.......................................14
Transport ..........................................................16
Towing ..............................................................16
Spark Arrestor ..................................................16
CONTROLS............................................................17
Control Locations .............................................17
Motion Control Levers ......................................18
Hour Meter .......................................................19
Blade Switch ....................................................19
Ignition Switch ..................................................19
Parking Brake...................................................20
Tracking Knob ..................................................21
Fuses................................................................21
Hydro Release Levers......................................21
Cutting Height Adjuster....................................22
Seat Adjustment Lever .....................................22
Fuel Shut Off Valve ...........................................22
Refueling ..........................................................23
OPERATION ...........................................................24
Training.............................................................24
Steering ............................................................24
Before Starting .................................................25
Starting the Engine...........................................25
Jumper Cables............................................28
Running ............................................................29
Operating on Hills ............................................30
Stopping the Engine.........................................31
Mowing Tips .....................................................32
Manual Transport..............................................33
Bypass Linkages.........................................33
MAINTENANCE......................................................34
Maintenance Schedule ....................................34
Battery ..............................................................36
Safety System...................................................37
Tire Pressures...................................................37
Parking Brake...................................................37
Deck Belt..........................................................38
Pump Belt.........................................................39
V-belts ..............................................................39
Cutting Blades..................................................40
Leveling deck..............................................41
Anti-scalp rollers...............................................42
Caster Wheels ..................................................43
Hardware..........................................................43
Cleaning ...........................................................43
LUBRICATION........................................................44
Lubrication Schedule .......................................44
Wheel and Deck Zerks.....................................45
Front Wheel Mount ......................................45
Front Wheel Bearings..................................45
Deck Spindles.............................................45
Transaxle (Transmission) Fluid Change ...........46
Purging Procedures ....................................47
TROUBLESHOOTING GUIDE................................48
STORAGE ..............................................................50
Winter Storage..................................................50
Service .............................................................50
WIRING DIAGRAMS ..............................................51
TECHNICAL DATA .................................................52
Torque Specifications.......................................54
CONFORMITY CERTIFICATES...............................55
SERVICE JOURNAL...............................................56
CONTENTS
Husqvarna-3

WARNING!
Failure to follow cautious operating practices can result in serious injury to the operator
or other persons. The owner must understand these instructions, and must allow only
trained persons who understand these instructions to operate the mower.
Each person operating the mower must be of sound mind and body and must not be
under the influence of any mind altering substance.
INTRODUCTION
4-Husqvarna

Congratulations
Thank you for purchasing a Husqvarna ride-on mower.
This machine is built for superior efficiency to rapidly
mow primarily large areas. A control panel that is
easily accessible to the operator and a hydrostatic
transmission regulated by steering controls both
contribute to the machine’s performance.
This manual is a valuable document. Read the
contents carefully before using or servicing the
machine. The following of instructions (use, service,
maintenance) by all who operate this machine is
important for the safety of the operator and others.
It can also considerably increase the life span of the
machine and increase its resale value.
If you sell your machine, be sure to give the operator’s
manual to the new owner.
The final chapter of this operator’s manual provides a
Service Journal. Ensure that service and repair work
are documented. A well-kept service journal reduces
service costs for the maintenance and affects the
machine’s resale value. Please contact your dealer for
more information. Take the operator’s manual along
when the machine is taken to your dealer for service.
General
In this operator’s manual, left and right, backward and
forward are used in relation to the machine’s normal
driving direction.
Continuous dedication to improve our products
require that specifications and design are subject to
change without notice.
Driving and Transport on Public Roads
Check applicable road traffic regulations before
transporting on public roads. If the machine is
transported, you must always use approved fastening
equipment and ensure that the machine is well
anchored. DO NOT operate this machine on public
roadways.
Towing
If machine is equipped with a tow hitch, use extreme
caution when towing. Never allow children or others in
or on the towed equipment. Make wide turns to avoid
jack-knifing. Travel slowly and allow extra distance to
stop.
Do not tow on sloped ground. The weight of the towed
equipment may cause loss of traction and loss of
control.
Follow the manufacturer's recommendation for weight
limits for towed equipment. Do not tow near ditches,
canals, and other hazards.
Operating
This machine is constructed only for mowing grass
on lawns and even ground without obstacles such
as stones, tree stumps, etc. The machine can also
be used for other tasks when equipped with special
accessories provided by the manufacturer. Operating
instructions for the accessories are provided with
delivery. All other types of uses are incorrect. The
manufacturer’s directions concerning operation,
maintenance, and repairs must be carefully followed.
Lawn mowers and all power equipment can be
potentially dangerous if used improperly. Safety
requires good judgment, careful use in accordance
with these instructions and common sense.
The machine must only be operated, maintained,
and repaired by persons familiar with the
machine’s special characteristics and who are also
knowledgeable about the safety instructions. Use only
approved repair parts to maintain this machine.
Accident prevention regulations, other general safety
regulations, occupational safety rules, and traffic
regulations must be followed without fail.
Unauthorized modifications to the design of the
machine may absolve the manufacturer from liability
for any resulting personal injury or property damage.
INTRODUCTION
Husqvarna-5

Good Service
Husqvarna’s products are sold all over the world
and only in specialized retail stores with complete
service. This ensures that you as a customer receive
only the best support and service. Before the product
is delivered, the machine has, for example, been
inspected and adjusted by your retailer. See the
certificate in the Service Journal in this operator’s
manual.
This manual belongs to the machine with the
manufacturing number:
Engine Transmission
When you need spare parts or support in service
questions, warranty issues, etc., please consult
the following professional:
Manufacturing Number
The machine’s manufacturing number can be found on the printed plate affixed to the engine compartment.
Stated on the plate, from the top are:
1. The machine’s type designation (I.D.).
2. The manufacturer’s type number (Model).
3. The machine’s serial number (Serial no.)
Please have the type designation and serial number available when ordering spare parts.
The engine’s manufacturing number is stamped on one of the valve covers.
The plate states:
4. The engine’s model.
5. The engine’s type.
6. Code
Please have these available when ordering spare parts.
The wheel motors and hydrostatic pumps have a barcode decal affixed at the rear.
INTRODUCTION
6-Husqvarna

RN
MAX
+
_90N MAX
+
_150N
These symbols are found on the machine and in the operator’s manual.
Study them carefully so that you know what they mean.
Used in this publication to notify the reader of a risk of personal injury or death, particularly if the reader should
neglect to follow instructions given in the manual.
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.
IMPORTANT INFORMATION
Xxxx xxxxxx xxxxx xxxx xxxxxxxxx xxxxxx
xxxxxxxxx. xx xxxxxxxx xxxx xxxxxx.
Reverse Neutral Fast Slow Fuel
Warning! Parking Brake Warning! Rotating blades, Do not touch parts
keep away from the
discharge deck
Battery acid is corrosive, explosive and flammable Do not stand here Drawbar loading
Use protective glasses Use protective gloves
WARNING!
Xxxx xxxxxx xxxxx xxxx xxxxxxxxx
xxxxxx xxxxxxxxx. xx xxxxxxxx xxxx
xxxxxx.
SYMBOLS AND DECALS
Husqvarna-7

Noise emissions to the
surroundings in accordance
with the European Union’s
directive. The machine’s
emission is stated in the
chapter TECHNICAL DATA
and on the decals.
Only machines for European
market.
Read Shut off engine and Keep a safe Use on slopes No passengers
Operator’s remove key before distance from no greater
Manual performing any the machine than 10°
maintenance or repair work
Whole body Severing of fingers Do not open or Careful backing up, Careful going
exposure to and toes remove safety watch for other forward, watch for
thrown objects shields while people other people
engine is running
SYMBOLS AND DECALS
8-Husqvarna

Safety Instructions
These instructions are for your safety. Read them carefully.
IMPORTANT: THIS CUTTING MACHINE IS CAPABLE OF AMPUTATING HANDS AND FEET AND THROWING
OBJECTS. FAILURE TO OBSERVE THE FOLLOWING SAFETY INSTRUCTIONS COULD RESULT IN SERIOUS
INJURY OR DEATH.
General Operation
• Read, understand, and follow all instructions on
the machine and in the manual before starting.
• Do not put hands or feet near rotating parts or
under the machine. Keep clear of the discharge
opening at all times.
• Only allow responsible adults, who are familiar
with the instructions, to operate the machine.
• Clear the area of objects such as rocks, toys,
wire, etc., which could be picked up and thrown
by the blades.
• Be sure the area is clear of bystanders before
operating. Stop machine if anyone enters the
area.
• Never carry passengers. The machine is only
intended for use by one person.
• Do not mow in reverse unless absolutely
necessary. Always look down and behind before
and while backing.
• Never direct discharged material toward anyone.
Avoid discharging material against a wall or
obstruction. Material may ricochet back toward
the operator. Stop the blades when crossing
gravel surfaces.
• Do not operate machine without the entire
grass catcher, discharge guard, or other safety
devices in place and working
• Slow down before turning.
• Never leave a running machine unattended.
Always turn off blades, set parking brake, stop
engine, and remove keys before dismounting.
• Disengage blades when not mowing. Shut
off engine and wait for all parts to come to a
complete stop before cleaning the machine,
removing the grass catcher, or unclogging the
discharge guard.
• Operate machine only in daylight or good
artificial light.
• Do not operate the machine while under the
influence of alcohol or drugs.
8011-512
Read the operator’s manual before starting the machine
8011-513
Clear the area of objects before mowing
WARNING!
This symbol means that important safety instructions need to be emphasized. It concerns
your safety.
SAFETY
Husqvarna-9

8011-520
Never take passengers
• Watch for traffic when operating near or crossing
roadways.
• Use extra care when loading or unloading the
machine into a trailer or truck.
• Always wear eye protection when operating
machine.
• Data indicates that operators age 60 years and
above are involved in a large percentage of
riding mower-related injuries. These operators
should evaluate their ability to operate the riding
mower safely enough to protect themselves and
others from serious injury.
• Follow the manufacturer’s recommendation for
wheel weights or counterweights.
• Anyone who operates this machine must first
read and understand this Operation Manual.
Local laws may regulate the age of the user.
• Keep machine free of grass, leaves or other
debris buildup which can touch the hot exhaust
or engine parts and burn. Do not allow the
mower deck to plow leaves or other debris,
causing buildup to occur.
• Clean any oil or fuel spillage before operating or
storing the machine.
• Allow machine to cool before storage.
WARNING!
Engine exhaust and certain vehicle
components contain or emit
chemicals considered to cause
cancer, birth defects, or other
reproductive system damage. The
engine exhaust contains carbon
monoxide, which is an odorless,
colorless, poisonous gas. Do not use
the machine in enclosed spaces.
SAFETY
10-Husqvarna

Personal Safety Equipment
8011-670a
Personal protective equipment
6003-004
Mow up and down, not side to side
• Make sure that you have first aid equipment
close at hand when using the machine.
• Never use the machine when barefoot.
• Always wear protective shoes or boots,
preferably with steel toe caps.
• Always wear approved protective glasses or a
full visor when assembling or driving.
• Always wear gloves when handling the blades.
• Never wear loose clothing that can get caught in
moving parts.
• Use ear protectors to avoid damage to hearing.
Slope Operation
Slopes are a major factor related to loss of control
and tip-over accidents, which can result in severe
injury or death. Operation on all slopes requires extra
caution. If you cannot back up the slope or if you feel
uneasy on it, do not mow it.
• Mow up and down slopes (10 degrees
maximum), not across.
• Watch for holes, ruts, bumps, rocks, or other
hidden objects. Uneven terrain could overturn
the machine. Tall grass can hide obstacles.
• Choose a low ground speed so that you will not
have to stop while on the slope.
• Do not mow on wet grass. Tires may lose
traction.
• Avoid starting, stopping, or turning on a slope. If
the tires lose traction, disengage the blades and
proceed slowly straight down the slope.
• Keep movement on the slopes slow and gradual.
Do not make sudden changes in speed or
direction, which could cause machine to roll
over.
• Use extra care while operating machine with
grass catchers or other attachments; they can
affect the stability of the machine.
• Do not use on steep slopes.
• Do not try to stabilize the machine by putting a
foot on the ground.
• Do not mow near drop-offs, ditches, or
embankments. The machine could suddenly roll
over if a wheel is over the edge or if the edge
caves in.
WARNING!
When using the machine, approved personal protective equipment (shown in illustrations)
shall be used. Personal protective equipment cannot eliminate the risk of injury but it
will reduce the degree of injury if an accident does happen. Ask your retailer for help in
choosing the right equipment.
WARNING!
Do not drive up or down hills with
slopes greater than 10 degrees. Do
not drive across any slopes.
SAFETY
Husqvarna-11

8011-517
Never allow children to operate the machine
8011-518
Keep children away from work area
Children
Tragic accidents can occur if the operator is not
alert to the presence of children. Children are often
attracted to the machine and the mowing activity.
Never assume that children will remain out of the
path of danger.
• Keep children out of the mowing area and in the
watchful care of a responsible adult other than
the operator.
• Be alert and turn machine off if a child enters the
area.
• Before and while backing, look behind and down
for small children.
• Never carry children, even with the blades shut
off. They may fall off and be seriously injured or
interfere with safe machine operation. Children
who have been given rides in the past may
suddenly appear in the mowing area for another
ride and be run over or backed over by the
machine.
• Never allow children to operate the machine.
• Use extra care when approaching blind corners,
shrubs, trees, or other objects that may block the
view of a child.
SAFETY
12-Husqvarna

Safe Handling of Gasoline
To avoid personal injury or property damage, use
extreme care in handling gasoline. Gasoline is
extremely flammable and the vapors are explosive.
• Extinguish all cigarettes, cigars, pipes, and other
sources of ignition.
• Use only approved gasoline container.
• Never remove gas cap or add fuel with the
engine running. Allow engine to cool at least two
(2) minutes before refueling.
• Never fuel the machine indoors.
• Never store the machine or fuel container where
there is an open flame, spark, or pilot light such
as on a water heater or other appliance.
• Before beginning to refuel, minimize the risk of
static electricity by touching a metal surface.
• Never fill containers inside a vehicle or on a
truck or trailer bed with plastic liner. Always
place containers on the ground away from the
vehicle when filling.
• Remove gas-powered equipment from the truck
or trailer and refuel it on the ground. If this is not
possible, refuel such equipment with a portable
container, rather than from a gasoline dispenser
nozzle.
• Keep the nozzle in contact with the rim of the
fuel tank or container opening at all times until
fueling is complete. Do not use a nozzle lock-
open device.
• If fuel is spilled on clothing, change clothing
immediately.
• Never overfill fuel tank. Replace gas cap and
tighten securely.
• Do not start the engine near spilled fuel.
• Never use gasoline as a cleaning agent.
• If leaks arise in fuel system, engine must not be
started until problem has been resolved.
• Check the fuel level before each use and leave
space for the fuel to expand, as the heat from
the engine and the sun may otherwise cause the
fuel to expand and overflow.
8011-516
Never fill the fuel tank indoors
WARNING!
The engine must not be started when the driver’s floor plate or any protective plate for the
mower deck’s drive belt is removed.
WARNING!
The engine and the exhaust system
become very hot during operation.
There is risk for burns if touched.
Allow engine and exhaust system to
cool at least two (2) minutes before
refueling.
SAFETY
Husqvarna-13

8011-515
Never drive the machine in an enclosed space
General Maintenance
• Never operate machine in a closed area.
• Keep all nuts and bolts tight to be sure the
equipment is in safe working condition.
• Never tamper with safety devices. Check their
proper operation regularly.
• Keep machine free of grass, leaves, or other
debris buildup. Clean oil or fuel spillage and
remove any fuel-soaked debris. Allow machine
to cool before storing.
• If the machine strikes a foreign object, stop and
inspect the machine. Repair, if necessary, before
restarting.
• Never make any adjustments or repairs with the
engine running.
• Check grass catcher components and the
discharge guard frequently and replace with
manufacturer’s recommended parts, when
necessary.
• Mower blades are sharp. Wrap the blade
or wear gloves, and use extra caution when
servicing them.
• Check brake operation frequently. Adjust and
service as required.
• Maintain or replace safety and instruction labels,
as necessary.
• Do not modify safety equipment. Check regularly
to be sure it works properly. The machine must
not be driven with defective or unmounted
protective plates, protective cowlings, safety
switches, or other protective devices.
• Do not change the settings of governors and
avoid running the engine with overly high engine
speeds. If the engine runs too fast, there is risk
for damaging the machine components.
• Be very careful when handling battery acid. Acid
on skin can cause serious corrosive burns. If
battery acid is spilled on skin, rinse immediately
with water.
• Acid in the eyes can cause blindness, contact a
doctor immediately.
• Be careful when servicing the battery. Explosive
gases form in the battery. Never perform
maintenance on the battery when smoking or
near open flames or sparks.
• The battery can explode and cause serious
injury or damage.
• Ensure that the equipment is in good condition
and that all nuts and bolts, especially those
fastening the blade attachments, are properly
tightened and torqued.
WARNING!
The battery contains lead and lead
compounds, chemicals that are
considered to cause cancer, birth
defects, and other reproductive
system damage. Wash your hands
after handling the battery.
WARNING!
Use protective glasses for
maintenance work.
SAFETY
14-Husqvarna

Sparking can occur when working with the battery
and the heavy cables of the starter circuit. This can
cause battery explosion, fire or eye injury. Sparking
in this circuit can not occur after the chassis cable
(normally negative, black) is removed from the
battery.
6003-009
Do not smoke when performing maintenance on the battery.
The battery can explode and cause serious injury/damage.
8009-728
Risk of sparking
WARNING!
Avoid electrical sparking and its
consequences by the following
routines:
8011-514
Regularly clean deck
• Use protective goggles.
• Ensure that the fuel filler cap is mounted tightly
and no flammable substances are stored in an
open vessel.
• Never work with the starter circuit if there is
spilled fuel.
• Disconnect the negative cable from the battery
first and reconnect it last.
• Do not make a bridge short circuit across the
starter relay to run the starter.
• Never use the machine indoors or in spaces
lacking proper ventilation. The exhaust fumes
contain carbon monoxide, an odorless,
poisonous, and lethal gas.
• Stop to inspect the equipment if the machine
runs over or into anything. If necessary, make
repairs before starting.
• Never make adjustments with the engine
running.
• The machine is tested and approved only
with the equipment originally provided or
recommended by the manufacturer. Only use
approved repair parts for the machine.
• The blades are sharp and can cause cuts and
gashes. Wrap the blades or use protective
gloves when handling them.
• Check the parking brake’s functionality
regularly. Adjust and service as necessary.
• The mulch blades should only be used in
familiar areas when higher quality mowing is
desired.
• Reduce the risk of fire by removing grass,
leaves, and other debris that may have
accumulated on the machine.
• Allow the machine to cool before putting it in
storage.
• Regularly clean deck and underside of
deck, avoid spraying engine and electrical
components with water.
SAFETY
Husqvarna-15

IMPORTANT INFORMATION
The parking brake is not sufficient to lock the
machine in place during transport. Ensure that
the machine is well fastened to the transport
vehicle. Always reverse the machine onto the
transport vehicle to avoid tipping it over.
WARNING!
Escaping hydraulic oil under
pressure can have sufficient force
to penetrate the skin, causing
serious injury. If injured by escaping
fluid, see a doctor at once. Serious
infection or reaction can develop
if proper medical treatment is not
administered immediately.
Transport
• The machine is heavy and can cause serious
crushing injuries. Be extra cautious when it is
loaded on or unloaded from a vehicle or trailer.
• Use an approved trailer to transport the
machine. Activate the parking brake, turn off
the fuel supply, and fasten the machine with
approved fastening devices, such as bands,
chains, or straps, when transporting.
• Do not operate this machine on public
roadways.
• Check and abide by local traffic regulations
before transporting the machine on any road.
• Do not tow this machine: it may cause damage
to the drive system.
• Load the unit onto truck or trailer by driving up
ramps of suitable strength using a slow speed.
Do not lift! The machine is not intended to be
lifted by hand.
Towing
If machine is equipped with a tow hitch, use extreme
caution when towing. Never allow children or others
in or on towed equipment..
Make wide turns to avoid jack-knifing. Travel slowly
and allow extra distance to stop. Do not tow on
sloped ground. The weight of the towed equipment
may cause loss of traction and loss of control.
Follow the manufacturer’s recommendation for
weight limits for towed equipment. Do not tow near
ditches, canals, and other hazards.
Spark Arrestor
A spark arrestor for the muffler is available through
your authorized Husqvarna dealer.
WARNING!
This mower is equipped with an
internal combustion engine and
should not be used on or near any
unimproved forested, bush covered
or grassy lands unless the engine's
system is equipped with a spark
arrestor meeting applicable local or
state laws (if any).
SAFETY
16-Husqvarna

This operator’s manual describes the Husqvarna Zero
Turn Rider. The rider is fitted with either a Briggs &
Stratton four-stroke overhead valve engine.
Transmission from the engine is made via belt-driven
hydraulic pumps. Using the left and right steering
controls, the flow is regulated and thereby the
direction and speed.
Control Locations
1
2
3
4
5
8
910
12
611
1. Motion control levers
2. Parking brake
3. Tracking knob
4. Fuel tank
5. Hydro release lever
6. Ignition switch
7. Hour meter
8. Throttle control
9. Blade switch
10. Seat adjustment lever
11. Right tracking bolt
12. Height adjustment
13. Deck lift
8058-039
5
7
13
CONTROLS
Husqvarna-17

Motion Control Levers
The machine’s speed and direction are continuously
variable using the two steering controls. The
steering controls can be moved forward or
backward about a neutral position. Furthermore,
there is a neutral position, which is locked if the
steering controls are moved outward.
When both controls are in the neutral position (N),
the machine stands still.
By moving both controls an equal amount forward
or backward, the machine moves in a straight line
forward or backward respectively.
For example, to turn right while moving forward,
move the right control towards the neutral position.
The rotation of the right wheel is reduced and the
machine turns to the right.
Zero turn can be achieved by moving one control
backward (behind the neutral position) and carefully
moving the other steering control forward from its
neutral position. The rotation direction when zero
turning is determined by which steering control is
moved backward behind the neutral position. If the
left steering control is pulled backward, the machine
turns to the left. Use extra care when using this
maneuver.
8065-053
1. Forward
2. Neutral
3. Neutral slot, Neutral lock
4. Reverse
Motion control lever pattern (right side)
WARNING!
The machine can turn very rapidly if
one steering control is moved much
further forward than the other.
8058-042
Steering controls
CONTROLS
18-Husqvarna

Hour Meter
The hour meter displays the total operating time.
It will flash CHG OIL (Change Oil) at 50 hour intervals.
The flash duration is one hour before and one hour
after the interval. The CHG OIL icon will come on
and shut off automatically. The hour meter cannot be
manually reset.
8058-043
Hour meter
Blade Switch
To engage the mower deck, pull the blade switch
knob out. The mower blades are disengaged when
the knob is pressed down fully.
8058-043
Blade switch
Ignition Switch
The ignition key is placed on the control panel and is
used to start and stop the engine.
Turn the key clockwise to start the engine.
8058-043
Ignition switch
CONTROLS
Husqvarna-19

Parking Brake
The parking brake is found on the left of the machine.
Pull the lever backward to activate the brake and
push forward to release it.
IMPORTANT INFORMATION
The machine must stand absolutely still when
applying the parking brake. Always set the
parking brake before dismounting. Release the
parking brake before moving the mower.
8058-044
Parking brake
8058-046
Ignition switch - RUN position
Release the key to the RUN position when the engine
has started.
For using “accessory”, turn the key counter clockwise.
8066-005
Ignition switch - accessory
CONTROLS
20-Husqvarna