Husqvarna W436, 967334301-00, W448, 967334401-00 Operator's Manual
EN
Commercial Mower
W436 / 967334301-00
W448 / 967334401-00
Please read the operator manual carefully and make sure
you understand the instructions before using the machine.
Gasoline containing up to 10% ethanol (E10) is acceptable
for use in this machine. The use of any gasoline
exceeding 10% ethanol (E10) will void the product warranty.
Operator Manual
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 unit.
Each person operating the mower must be
of sound mind and body and must not be
under the influence of any mind altering
substance.
WARNING! Engine exhaust, some
of its constituents, and certain vehicle
components contain or emit chemicals
known to the State of California to
cause cancer and birth defects or other
reproductive harm.
IMPORTANT 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.
IMPORTANT Refer to Engine Manual for
correct type and grade of fuel.
Delivery
If you have purchased this product without
complete assembly and instruction by your
retailer, it is your responsibility to read and
understand all assembly instructions. If you do
not understand or have difficulty following the
instructions, contact the nearest Husqvarna
dealer for assistance.
To locate the nearest Husqvarna dealer, go to
www.husqvarna.com.
Before Operating the Unit
1. Make sure all assembly has been
properly completed.
2. Understand all safety precautions
provided in the manuals.
3. Review control functions and operation of
the unit. Do not operate the unit unless all
controls function as described.
4. Review recommended lubrication,
maintenance and adjustment instructions.
WARNING! Improper assembly or
adjustments cause serious injury.
Safety Decals
The safety decals on the machine are visual
reminders of the important safety information
found in this manual. All messages found on
the unit must be fully understood and carefully
followed.
Always replace missing or damaged safety
decals. Replacement decals can be found in
the parts manual for the machine and ordered
from your dealer.
WARNING! Tragic accidents can
occur if the operator is not alert to the
presence of children. Never assume that
children will remain where you last saw
them.
WARNING! Stop engine and allow
moving parts to stop before leaving
operator’s position.
©
2014 All rights reserved.
Orangeburg, SC. Printed in U.S.A.
TABLE OF CONTENTS
INTRODUCTION
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
the machine is important for the safety of the
operator and others.
The engine is covered by a separate manual.
The manual is included in the literature
package shipped with the unit. Refer to this
manual for engine service recommendations.
Model And Serial Numbers
When ordering replacement parts or making
service inquiries, know the Model and Serial
numbers of your unit.
Numbers are located on the product
registration form in the unit literature package.
They are printed on a serial number label,
located on the frame of the unit near the
engine.
Engine serial numbers are on the left side of
the engine and also below the dipstick tube.
Unit Model and Serial Number
Engine Model and Serial Number
Production Registration
The dealer will register the product at the
time of purchase. Registering the product will
help the company process warranty claims or
contact you with the latest service information.
If the Dealer does not register your product,
fill out, sign and return the product registration
card or go to: www.husqvarna.com.
All claims meeting requirements during the
limited warranty period will be honored,
whether or not the product registration card is
returned. Keep a proof of purchase if you do
not register the unit.
Service
When ordering spare parts, please specify the
purchase year, model, type, and serial number.
Always use genuine Husqvarna spare parts.
SYMBOLS AND DECALS .......................5
SAFETY ...................................................6
ASSEMBLY ...........................................10
CONTROLS ...........................................11
OPERATION ..........................................12
MAINTENANCE SCHEDULE ................19
MAINTENANCE ....................................20
STORAGE .............................................26
TROUBLESHOOTING ..........................27
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Emission Control System
This equipment and/or its engine may include
exhaust and evaporative emissions control
system components required to meet U.S.
Environmental Protection Agency (EPA) and/
or California Air Resources Board (CARB)
regulations. Tampering with emission controls
and components by unauthorized personnel
may result in severe fines or penalties.
Emission controls and components can
only be adjusted by a Husqvarna dealer
or an authorized engine manufacturer's
service center. Contact a Husqvarna dealer
concerning emission controls and components.
General
In this operator’s manual, left and right,
backward and forward are used in relation to
the machine’s normal driving direction.
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.
Operating
This machine is constructed only for mowing
grass on lawns and even ground without
obstacles such as stones or tree stumps.
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 judgement, 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.
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IMPORTANT Xxxx xxxxxx xxxxx xxxx
xxxxxxxxx xxxxxx xxxxxxxxx. xx xxxxxxxx
xxxx xxxxxx.
WARNING! Xxxx xxxxxx xxxxx xxxx
xxxxxxxxx xxxxxx xxxxxxxxx. xx xxxxxxxx
xxxx xxxxxx.
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.
SYMBOLS AND DECALS
These symbols are found on the machine and
in the operator 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.
Read the operator manual.
Keep people and pets away
when operating unit. Keep
children out of the work area
and under the watchful care of
a responsible adult.
Never direct discharge toward
other people. Thrown objects
can cause injury. Remove
objects that could be thrown
by the blade. DO NOT
operate mower over gravel
and hard surfaces.
Keep safety devices (guards,
shields, switches, etc.) in
place and working.
Look before backing. Proceed
off slopes slowly.
Serious injury or death
may result from machine
rollover. Do not operate on
slopes over 15O.
ROTATING BLADE! Keep
hands and feet away. DO NOT
operate mower unless guards
are in operating position or
bagger is attached.
Do not put hands near moving
belts
Keep hands and feet away
from rotating or moving parts
Always stand clear of
discharge area.
Shut off engine, remove
ignition key, read manual
before you unplug, adjust or
repair unit.
NO STEP! Always keep feet
away from rotating parts.
Do not overfill fuel tank.
Replace fuel cap securely and
clean up spilled fuel. Never
fill fuel tank when engine is
running, hot or unit is indoors.
- 6 -
Protecting 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 where you last saw them.
• 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.
• Never allow children to operate the
machine.
• Use extra care when approaching blind
corners, shrubs, trees, or other objects that
may block your view of a child.
General Operation
• Read, understand, and follow all
instructions on the machine and in the
manual before starting.
• Anyone who operates, maintains, and/or
services this machine must first read and
understand this Operator Manual. Local
laws may regulate the age of the user. The
owner is responsible for training the users
of this equipment.
• The owner and operator of this equipment
can prevent accidents and is responsible
for accidents or injuries occurring to
themselves, other people and/or property.
• 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., that could be picked up and
thrown by the blades.
• Low-hanging branches and similar
SAFETY
obstacles can injure the operator or
interfere with mowing operation. Before
mowing, identify potential obstacles such
as low-hanging branches, and trim or
remove those obstacles.
• Be sure the area is clear of bystanders
before operating. Stop machine if anyone
enters the area.
• 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
discharge guard, or other safety devices in
place and working.
• Slow down before turning.
• Operate the machine only in daylight or
good artificial light.
• Never leave a running machine
unattended. Always turn off blades, stop
engine and remove ignition key before
dismounting.
• Do not wear radio or music headphones.
Safe service and operation require full
attention.
• Do not hang or secure any item to the
control console. The operator’s station
should always remain unobstructed.
• Do not pull mower backwards while the
blades are rotating. Use the reverse gear
to move the machine in reverse.
• Disengage blades when not mowing.
Shut off engine and wait for all parts to
come to a complete stop before cleaning
the machine or unclogging the discharge
guard.
• Do not operate the machine while under
the influence of alcohol or drugs.
• Watch for traffic when operating near or
crossing roadways.
• Use extra care when loading or unloading
the machine into a trailer or truck.
- 7 -
Personal Safety Equipment
• Make sure first aid equipment is 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 mowing.
• 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 or machine tip-over accidents, which
can result in severe injury or death. Operation
on all slopes requires extra caution. If you
cannot reverse up the slope or if you feel
unsure, do not mow it.
• Mow across slopes, not up and down.
• 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 all movement on the slopes slow and
gradual. Do not make sudden changes in
speed or direction, which could cause the
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 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.
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.
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 to a safe temperature before
refueling.
• Never fuel the
machine indoors.
• Before you
begin refueling,
minimize the
risk of static
electricity by
touching a metal
surface.
• 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.
• Never remove gas cap or add fuel with the
engine running. Allow engine to cool before
refueling.
• Never overfill fuel tank. Replace gas cap
and tighten securely.
• If fuel is spilled on clothing, change clothing
immediately.
• Do not start the engine near spilled fuel.
• Extinguish all cigarettes, cigars, pipes, and
other sources of ignition.
• Use only an approved fuel container. Use
only non-metal, portable fuel containers
approved by the Underwriter’s Laboratory
(UL) or the American Society for Testing &
Materials (ASTM). If using a funnel, make
sure it is plastic and has no screen or filter.
• 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.
- 8 -
General Maintenance
• Never use the
machine indoors
or in spaces
lacking proper
ventilation. The
exhaust fumes
contain carbon
monoxide,
an odorless,
poisonous, and lethal gas.
• 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 you strike a foreign object, stop and
inspect the machine. Repair, if necessary,
before restarting.
• Never make any adjustments or repairs
with the engine running.
• Check 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.
• Check wheel hardware tightness often
during the first 100 hours of operation.
Wheel hardware must be tightened
to specified torque using the proper
procedure anytime it is loosened.
• 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 leaks arise in fuel system, engine must
not be started until problem has been
resolved.
• 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.
• Do not use gas with methanol. Methanol
is harmful to your health and to the
environment.
• Do not modify safety equipment. Check
regularly to be sure it works properly. The
machine must not be used 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 you run the engine
too fast, you risk damaging the machine
components.
• Use protective goggles.
• Ensure that the fuel filler cap is mounted
tightly and no flammable substances are
stored in an open vessel.
• 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.
• 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.
• Hydraulic hoses and lines can fail due
to physical damage, kinks, age, and
exposure. Check hoses and lines regularly.
Replace damaged hoses and lines.
• Hydraulic fluid connections can loosen
due to physical damage and vibration.
Check connections regularly. Tighten loose
connections.
• Escaping fluid under pressure can
penetrate the skin causing serious injury.
Avoid the hazard by relieving pressure
before disconnecting hydraulic or other
lines. Tighten all connections before
applying pressure.
• Search for leaks with a piece of cardboard.
Protect hands and body from high pressure
fluids.
• If an accident occurs, see a doctor
immediately. Any fluid injected into the
skin must be surgically removed within
a few hours or gangrene may result.
Doctors unfamiliar with this type of injury
should reference a knowledgeable medical
source.
• Always maintain the correct tire pressure.
Do not inflate the tires above the
recommended pressure. Never weld or
heat a wheel and tire assembly. The heat
can cause an increase in air pressure
resulting in a tire explosion. Welding can
structurally weaken or deform the wheel.
- 9 -
• When inflating tires, use a clip-on chuck
and extension hose long enough to allow
you to stand to one side and NOT in front
of or over the tire assembly.
• Check tires for low pressure, cuts, bubbles,
damaged rims or missing lug bolts and
nuts.
• Regularly clean deck and underside of
deck, avoid spraying engine and electrical
components with water.
Waste Product and Chemicals
• Waste products, such as, used oil, fuel,
coolant, brake fluid, and batteries, can
harm the environment and people:
• Do not place waste fluids in used beverage
containers.
• See your local Recycling Center or
authorized dealer to learn how to recycle or
get rid of waste products.
• A Material Safety Data Sheet (MSDS)
provides specific details on chemical
products: physical and health hazards,
safety procedures, and emergency
response techniques. The seller of the
chemical products used with your machine
is responsible for providing the MSDS for
that product.
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.
• Check and abide by local traffic regulations
before transporting the machine on any
road.
Maintenance and Storage
• Never store the equipment with fuel in
the tank inside a building where fumes
might reach an open flame or spark. Allow
the engine to cool before storing in any
enclosure.
• If the fuel tank has to be drained for
storage perform this task outdoors.
• Maintain or replace safety and instruction
labels, as necessary.
• Clear debris from movable parts, but only
when the power source is shut off. DO
NOT spray water to clean unit.
• Check to be sure all nuts and bolts are tight
to assure the equipment is in safe working
condition.
• For extended storage, clean unit
thoroughly. See engine manual for proper
storage.
Spark Arrestor
The engine in this machine is not equipped
with a spark arrestor muffler. It is a violation of
California Public Resource Code Section 4442
to use or operate this engine on or near any
unimproved forested, bush covered or grassy
lands unless the exhaust system is equipped
with a spark arrestor meeting any applicable
local or state laws. Other states or federal
areas may have similar laws. A spark arrestor
for your machine may be available from your
authorized dealer. An installed spark arrestor
must be maintained in good working order by
the operator.
- 10 -
ASSEMBLY
1. After removing the unit from shipping
container, adjust tire pressure to 10 to 14
psi (70 to 95 kPa).
2. Check the adjustments outlined in
Maintenance.
3. Check engine oil level. See the engine
manual.
4. Add clean fuel to the fuel tank. See engine
manual for type and grade.
5. Check for loose hardware.
6. Make sure that safety interlock system
operates correctly. See Safety Interlock
System.
7. Make sure that unit tracks straight. The
unit must not pull sharply to the left or right
when the steering levers are released.
See Tracking Adjustment.
CAUTION! Avoid injury! Explosive
separation of tire and rim parts is possible
when they are serviced incorrectly.
• Do not attempt to mount a tire without
the proper equipment and experience
to perform the job.
• Do not inflate the tires above the
recommended pressure.
• Do not weld or heat a wheel and tire
assembly. Heat can cause an increase
in air pressure resulting in an explosion.
Welding can structurally weaken or
deform the wheel.
• Do not stand in front or over the tire
assembly when inflating. Use a clip-on
chuck and extension hose long enough
to allow you to stand to one side.
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