MTD Series 580 User Manual To The Ddeb5566 A131 4290 A344 60f4ed6ec34c

User Manual: MTD Series 580 to the manual

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Safety • Assembly • Operation • Tips & Techniques • Maintenance • Troubleshooting • Parts Lists • Warranty

OPERATOR’S MANUAL

21” Rotary Mower — Model Series 580
IMPORTANT
READ SAFETY RULES AND INSTRUCTIONS CAREFULLY BEFORE OPERATION
Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brushcovered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any).
If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of California the above is required by law
(Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester
for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 361131 Cleveland,
Ohio 44136-0019.

PRINTED IN U.S.A.

MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

FORM NO. 769-02310A
9/21/2006

This Operator’s Manual is an important part of your new lawn mower. It will help you assemble,
prepare and maintain the unit for best performance. Please read and understand what it says.

Table of Contents
Slope Gauge........................................................ 3
Safe Operation Practices.................................... 4
Setup and Adjustment........................................ 6
Operating Your Lawn Mower............................... 8
Maintaining Your Lawn Mower.......................... 10

Troubleshooting................................................. 12
Safety Labels..................................................... 13
Parts List............................................................ 14
Warranty..............................................Back Cover

MTD LLC reserves the right to change product specifications, designs, and equipment without notice and without incurring obligation.

Finding and Recording Model Number
BEFORE YOU BEGIN TO ASSEMBLE YOUR NEW
EQUIPMENT, please locate the model plate on the
equipment and copy the information to the sample
model plate provided to the right. You can locate the
model plate by standing at the operating position and
looking down at the rear of the deck. This information
will be necessary to use the manufacturer’s web
site, to obtain assistance from the Customer Support Department, or when contacting an authorized
service dealer.

Model Number

Serial Number

Customer Support
Please do NOT return the unit to the retailer from which it was
purchased, without first contacting Customer Support.

If you have difficulty assembling this product or have any questions regarding the controls, operation, or
maintenance of this unit, you can seek help from the experts. Choose from the options below:
• Visit www.mtdproducts.com
• Call a Customer Support Representative at 1-800-800-7310.
• The engine manufacturer is responsible for all engine-related issues with regards to performance, powerrating, specifications, warranty and service. Please refer to the engine manufacturer’s Owner’s/Operator’s
Manual, packed separately with your unit, for more information.

Use this page as a guide to determine slopes where you may not operate safely.
Do not operate your lawn mower on such slopes.

Slope
Gauge
3IGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE

&O
OR A FENCE POST

OR A CORNER OF A BUILDING

LD ALO
NG D
ESEN

TED L
I
N
E

REPR
LOPE

TS A
S

WARNING
Do not mow on inclines
with a slope in excess
of 15 degrees (a rise
of approximately
2-1/2 feet every 10
feet). A riding mower
could overturn and
cause serious injury.
If operating a walkbehind mower on such
a slope, it is extremely
difficult to maintain your
footing and you could
slip, resulting in serious
injury.
Operate RIDING
mowers up and down
slopes, never across
the face of slopes.
Operate
WALK-BEHIND
mowers across the
face of slopes, never
up and down slopes.

2
Safe
Operation
Practices

WARNING
This symbol points
out important safety
instructions which, if
not followed, could
endanger the personal
safety and/or property
of yourself and others.
Read and follow all
instructions in this
manual before attempting to operate
this machine. Failure
to comply with these
instructions may result
in personal injury. When
you see this symbol.
HEED ITS WARNING!

Your Responsibility
Restrict the use
of this power machine
to persons who read,
understand
and follow the warnings
and instructions
in this manual
and on the machine.

WARNING: Engine Exhaust, some of its constituents, and certain vehicle components contain or emit chemicals known to State of California to cause cancer and
birth defects or other reproductive harm.
DANGER: This machine was built to be operated according to the rules for safe operation in this
manual. As with any type of power equipment, carelessness or error on the part of the operator
can result in serious injury. This 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.

Children

6. Always wear safety glasses or safety goggles during operation and while performing an adjustment or repair to protect
your eyes. Thrown objects which ricochet can cause serious
injury to the eyes.
7. Wear sturdy, rough-soled work shoes and close-fitting
slacks and shirts. Shirts and pants that cover the arms and
legs and steel-toed shoes are recommended. Never operate
this machine in bare feet, sandals, slippery or light-weight
(e.g. canvas) shoes.
8. Do not put hands or feet near rotating parts or under cutting
deck. Contact with blade can amputate hands and feet.
9. A missing or damaged discharge cover can cause blade
contact or thrown object injuries.
10. Many injuries occur as a result of the mower being pulled
over the foot during a fall caused by slipping or tripping.
Do not hold on to the mower if you are falling; release the
handle immediately.
11. Never pull the mower back toward you while you are
walking. If you must back the mower away from a wall or
obstruction first look down and behind to avoid tripping and
then follow these steps:
a. Step back from mower to fully extend your arms.
b. Be sure you are well balanced with sure footing.
c. Pull the mower back slowly, no more than half way
toward you.
d. Repeat these steps as needed.
12. Do not operate the mower while under the influence of
alcohol or drugs.
13. Do not engage the self-propelled mechanism on units so
equipped while starting engine.
14. The blade control handle is a safety device. Never attempt
to bypass its operation. Doing so makes the safety device
inoperative and may result in personal injury through
contact with the rotating blade. The blade control handle
must operate easily in both directions and automatically
return to the disengaged position when released.
15. Never operate the mower in wet grass. Always be sure of
your footing. A slip and fall can cause serious personal
injury. If you feel you are losing your footing, release the
blade control handle immediately and the blade will stop
rotating within three seconds.
16. Mow only in daylight or good artificial light. Walk, never run.
17. Stop the blade when crossing gravel drives, walks or roads.
18. If the equipment should start to vibrate abnormally, stop the
engine and check immediately for the cause. Vibration is
generally a warning of trouble.

Tragic accidents can occur if operator is not alert to presence
of children. Children are often attracted to mower and mowing
activity. They do not understand the dangers. Never assume
that children will remain where you last saw them.
1. Keep children out of the mowing area and under watchful
care of a responsible adult other than the operator.
2. Be alert and turn mower off if a child enters the area.
3. Before and while moving backwards, look behind and down
for small children.
4. Use extreme care when approaching blind corners,
doorways, shrubs, trees, or other objects that may obscure
your vision of a child who may run into the mower.
5. Keep children away from hot or running engines. They can
suffer burns from a hot muffler.
6. Never allow children under 14 years old to operate a power
mower. Children 14 years old and over should read and
understand operation instructions and safety rules in this
manual and should be trained and supervised by a parent.

General Operation
1. Read this operator’s manual carefully in its entirety before
attempting to assemble this machine. Read, understand,
and follow all instructions on the machine and in the
manual(s) before operation. Be completely familiar with
the controls and the proper use of this machine before
operating it. Keep this manual in a safe place for future
and regular reference and for ordering replacement parts.
2. This machine is a precision piece of power equipment,
not a plaything. Therefore, exercise extreme caution at all
times. Your unit has been designed to perform one job: to
mow grass. Do not use it for any other purpose.
3. Never allow children under 14 years old to operate this
machine. Children 14 years old and over should read and
understand the instructions in this manual and should
be trained and supervised by a parent. Only responsible
individuals who are familiar with these rules of safe
operation should be allowed to use this machine.
4. Thoroughly inspect the area where the equipment is to
be used. Remove all stones, sticks, wire, bones, toys
and other foreign objects, which could be tripped over or
picked up and thrown by the blade. Thrown objects can
cause serious personal injury. Plan your mowing pattern
to avoid discharge of material toward roads, sidewalks,
bystanders and the like. Also, avoid discharging material
against a wall or obstruction, which may cause discharged
material to ricochet back toward the operator.
5. To help avoid blade contact or a thrown object injury,
stay in operator zone behind handles and keep children,
bystanders, helpers and pets at least 75 feet from mower
while it is in operation. Stop machine if anyone enters
area.

19. Shut the engine off and wait until the blade comes to a
complete stop before removing the grass catcher or unclogging the chute.
The cutting blade continues to rotate for a few seconds after
the engine is shut off. Never place any part of the body in
the blade area until you are sure the blade has stopped
rotating.
20. Never operate mower without proper trail shield, discharge
cover, grass catcher, blade control handle or other safety
protective devices in place and working. Never operate
mower with damaged safety devices. Failure to do so can
result in personal injury.
21. Muffler and engine become hot and can cause a burn. Do
not touch.
22. Only use parts and accessories made for this machine by
manufacturer. Failure to do so can result in personal injury.
23. If situations occur which are not covered in this manual,
use care and good judgment. Contact your dealer for
assistance.

Slope Operation
Slopes are a major factor related to slip and fall accidents, which
can result in severe injury. Operation on slopes requires extra
caution. If you feel uneasy on a slope, do not mow it. For your
safety, use the slope gauge included as part of this manual to
measure slopes before operating this unit on a sloped or hilly
area. If the slope is greater than 15 degrees, do not mow it.

Do:

1. Mow across the face of slopes; never up and down. Exercise
extreme caution when changing direction on slopes.
2. Watch for holes, ruts, rocks, hidden objects, or bumps
which can cause you to slip or trip. Tall grass can hide
obstacles.
3. Always be sure of your footing. A slip and fall can cause
serious personal injury. If you feel you are losing your
balance, release the blade control handle immediately, and
the blade will stop rotating within 3 seconds.

Do Not:

1. Do not mow near drop-offs, ditches or embankments, you
could lose your footing or balance.
2. Do not mow slopes greater than 15 degrees as shown on
the slope gauge.
3. Do not mow on wet grass. Unstable footing could cause
slipping.

Service
Safe Handling Of Gasoline:

1. To avoid personal injury or property damage use extreme
care in handling gasoline. Gasoline is extremely flammable
and the vapors are explosive. Serious personal injury can
occur when gasoline is spilled on yourself or your clothes,
which can ignite. Wash your skin and change clothes
immediately.
2. Use only an approved gasoline container.
3. Never fill containers inside a vehicle or on a truck or trailer
bed with a plastic liner. Always place containers on the
ground away from your vehicle before filling.
4. Remove gas-powered equipment from the truck or trailer
and refuel it on the ground. If this is not possible, then refuel
such equipment on a trailer with a portable container, rather
than from a gasoline dispenser nozzle.
5. 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.

6. Extinguish all cigarettes, cigars, pipes and other sources
of ignition.
7. Never fuel machine indoor because flammable vapors will
accumulate in the area.
8. Never remove gas cap or add fuel while engine is hot or
running. Allow engine to cool at least two minutes before
refueling.
9. Never over fill fuel tank. Fill tank to no more than ½ inch
below bottom of filler neck to provide for fuel expansion.
10. Replace gasoline cap and tighten securely.
11. If gasoline is spilled, wipe it off the engine and equipment.
Move unit to another area. Wait 5 minutes before starting
engine.
12. Never store the machine or fuel container near an open
flame, spark or pilot light as on a water heater, space
heater, furnace, clothes dryer or other gas appliances.
13. To reduce fire hazard, keep mower free of grass, leaves,
or other debris build-up. Clean up oil or fuel spillage and
remove any fuel soaked debris.
14. Allow a mower to cool at least 5 minutes before storing.

2
Safe
Operation
Practices

General Service:

1. Never run an engine indoors or in a poorly ventilated area.
Engine exhaust contains carbon monoxide, an odorless
and deadly gas.
2. Before cleaning, repairing, or inspecting, make certain the
blade and all moving parts have stopped. Disconnect the
spark plug wire and ground against the engine to prevent
unintended starting.
3. Check the blade and engine mounting bolts at frequent
intervals for proper tightness. Also, visually inspect blade
for damage (e.g., bent, cracked, worn) Replace blade with
the original equipment manufacture’s (O.E.M.) blade only,
listed in this manual. “Use of parts which do not meet the
original equipment specifications may lead to improper
performance and compromise safety!”
4. Mower blades are sharp and can cut. Wrap the blade or
wear gloves, and use extra caution when servicing them.
5. Keep all nuts, bolts, and screws tight to be sure the equipment is in safe working condition.
6. Never tamper with safety devices. Check their proper
operation regularly.
7. After striking a foreign object, stop the engine, disconnect the spark plug wire and ground against the engine.
Thoroughly inspect the mower for any damage. Repair the
damage before starting and operating the mower.
8. Never attempt to make a wheel or cutting height adjustment while the engine is running.
9. Grass catcher components, discharge cover, and trail
shield are subject to wear and damage which could
expose moving parts or allow objects to be thrown. For
safety protection, frequently check components and replace immediately with original equipment manufacturer’s
(O.E.M.) parts only, listed in this manual. “Use of parts
which do not meet the original equipment specifications
may lead to improper performance and compromise
safety!”
10. Do not change the engine governor setting or over-rev the
engine. The governor controls the maximum safe operating
speed of the engine.
11. Maintain or replace safety labels, as necessary.
12. Observe proper disposal laws and regulations. Improper
disposal of fluids and materials can harm the environment.

WARNING
This symbol points
out important safety
instructions, which if
not followed, could
endanger the personal
safety and/or property
of yourself and others.
Read and follow all
instructions in this manual before attempting to
operate this machine.
Failure to comply with
these instructions may
result in personal injury.
When you see this
symbol.
HEED IT’S WARNING!

Your Responsibility
Restrict the use
of this power machine
to persons who read,
understand
and follow the warnings
and instructions
in this manual
and on the machine.

1. Remove any packing material which may be between
upper and lower handles.
a. Pull up and back on upper handle as shown in
Figure 3-1. Make certain the lower handle is seated
securely into the handle mounting brackets.
b. Tighten hand knobs securing upper handle to
lower handle. Make sure that each carriage bolt is
seated properly in the handle.
2. Locate hairpin clip in one hole on the weld pin on each
side of lower handle.

Setup and
Adjustment

NOTE: Your mower is shipped with the handle in the
higher height position.
a. Remove hairpin clip from this hole. Using a pair of
pliers, insert hairpin clip into the other hole on the
weld pin. Repeat on other side. See Figure 3-2.
b. Insert a carriage bolt from the hardware pack into
the upper hole on the handle mounting bracket.
Secure with one plastic wing nut, also included
in the hardware pack. Repeat on other side with
remaining items from hardware pack.
3. The rope guide is attached to the right side of the
upper handle. Loosen the wing nut which secures the
rope guide.
a. Hold blade control handle against upper handle.
b. Pull starter rope out of the engine. Release blade
control handle. See Figure 3-3.
c. Slip starter rope into rope guide.
d. Tighten wing nut.
4. Insert post on cable ties into holes provided on the
lower handle. Pull cable tie tight and trim excess.
5. If not already installed, assemble rear wheels as
described below:
a. Place rear of the mower deck on raised blocks.
b. Remove lock nut from pivot arm assembly (on
select models, these may be included separately
in a plastic bag).

Figure 3-1: Unfold handle and tighten hardware.

NOTE: This Operator’s
Manual covers
several models. Lawn
Mower features vary by
model. Not all features
discussed (or engines
pictured) in this manual
are applicable to all
Lawn Mower models.
NOTE: Stand behind
the mower as if you
were going to operate
it. Your right hand corresponds to the right
side of the mower; your
left hand corresponds
to the left side of the
mower.

Hardware Pack

Wing Nuts (2)

Carriage Bolts (2)

A
Figure 3-2: Secure lower handle to mounting brackets.

NOTE: Each end of
the lower handle must
be placed in the same
relative position.
IMPORTANT
This unit is shipped
without gasoline or
oil in the engine. Fill
up gasoline and oil
as instructed in the
accompanying engine
manual BEFORE
operating your mower.

Figure 3-3: Pull recoil starter through rope guide and tighten.

Figure 3-4: Secure cable to handle using cable ties.

c. Slide wheel, with hollow side in, onto pivot arm and
secure with lock nut. See Figure 3-5.
d. Assemble the other side in the same manner.
6. An adjusting plate and thumb lever at each wheel
position provides cutting height adjustment.
a. Depress lever towards wheel.

Setup and
Adjustment

b. Move it to any of the nine positions for desired
cutting height. See Figure 3-6.
c. Release lever towards mower deck.
7. Follow steps below to assemble the grass catcher:
a. Place bag over frame so that its black plastic side
is at the bottom.
b. Slip plastic channel of grass bag over hooks on
the frame. See Figure 3-7. All the plastic channels
except center top of bag attach from outside of
bag.

Figure 3-5: If not already installed, assemble rear wheels.

WARNING

c. Attach center top of bag from inside of bag.
8. Follow steps below to attach grass catcher:
a. Lift rear discharge door.

Never operate mower
unless the hooks on
the grass catcher are
firmly seated in the
slots on the handle
bracket assemblies,
and the rear discharge door rests
firmly against top of
the grass catcher.

b. Place grass catcher on the pivot rod. Let go
of discharge door so that it rests on the grass
catcher. See Figure 3-8.

A
C

To remove grass catcher or convert to a mulcher, lift rear
discharge door on the mower as shown in Figure 3-8. Lift
grass catcher up and out of the pivot rod. Release rear
discharge door to allow it to close rear opening of mower.

WARNING: Never operate mower
unless the hooks on the grass
catcher are firmly seated in the
slots on the handle bracket assemblies, and the rear discharge
door rests firmly against top of
the grass catcher.

Figure 3-6: Use adjustment levers at each wheel to change the
cutting height.

C
B

Figure 3-8: Attach the grass catcher.

Figure 3-7: Assemble the grass catcher (if needed).

CUTTING HEIGHT
All wheels must be
placed in the same
relative position.
GRASS CATCHER
Make certain bag is
turned right side out
before assembling
(warning label will be
on the outside).

4
Operating
Your Lawn
Mower

Know Your Lawn Mower
Blade Control

Recoil
Starter

Cutting Height
Adjustment Lever
(for each wheel)

WARNING
The blade control
mechanism is a
safety device. Never
attempt to bypass its
operations.
Use extreme care
when handling
gasoline. Gasoline is
extremely flammable
and the vapors are
explosive. Never fuel
the machine indoors
or while the engine
is hot or running.
Extinguish cigarettes,
cigars, pipes and
other sources of
ignition.
Keep hands and feet
away from the chute
area on cutting deck.
Refer to warning
label on the unit.

Figure 4-1: The main components on the mower.

Now that you have set up your lawn mower for operation, get aquainted with its controls and features. These
are described below and illustrated on this page. This
knowledge will allow you to use your new equipment to
its fullest potential.

Recoil Starter

Blade Control

1. Check oil level and add oil if necessary. Follow engine
manual for this.

The recoil starter is attached to the right upper handle.
Stand behind the unit and pull the recoil starter rope to
start the unit.

Gas and Oil Fill-Up

The blade control is attached to the upper handle of
the mower. Depress and squeeze it against the upper
handle to operate the unit. Release it to stop engine and
blade.

2. Service the engine with gasoline as instructed in the
engine manual. See engine manual for location of
gasoline and oil fill.

WARNING: This blade control mechanism is a safety device. Never attempt
to bypass its operations.

WARNING: Use extreme care when handling gasoline. Gasoline is extremely
flammable and the vapors are explosive.
Never fuel the machine indoors or while
the engine is hot or running. Extinguish
cigarettes, cigars, pipes and other
sources of ignition.

Cutting Height Adjustment Levers

One adjustment lever is located on each wheel and is
used to adjust the cutting height. All four levers have to
be at the same relative position to ensure a uniform cut.

Starting Engine
WARNING: Be sure no one other than the
operator is standing near the lawn mower
while starting engine or operating mower. Never
run engine indoors or in enclosed, poorly ventilated
areas. Engine exhaust contains carbon monoxide, an
odorless and deadly gas. Keep hands, feet, hair and
loose clothing away from any moving parts on engine
and lawn mower.

Operating
Your Lawn
Mower

Follow the set of instructions pertaining to your unit.
Refer to engine manual for help with the engine.

Briggs & Stratton/ Tecumseh Engine:

1. Push primer three times. Wait about two seconds
between each push. See Figure 4-2. In temperature
around 55° F or below, prime five times. Do not prime
to restart a warm engine.

1
Figure 4-2: Starting the Briggs & Stratton/ Tecumseh engine.

2. Standing behind the mower, squeeze the blade control
against upper handle.
3. Holding these two handles together firmly, grasp recoil
starter handle and pull rope out with a rapid, continuous, full arm stroke. See Figure 4-2. Keeping a firm
grip on the starter handle, let the rope rewind slowly.
Repeat until engine cranks. Let the rope rewind each
time slowly.

WARNING

Honda Engine:

1. Place the fuel valve lever found on the left side of the
engine into the ON (OPEN) position. See Figure 4-3.

2. Move the choke lever all the way backward into the
choke position.
3. Standing behind the mower, squeeze the blade control
against upper handle. The choke will now begin to
slowly return to the off choke position after activating
the blade control. Therefore, quickly move onto step
four below.

2
OFF
ON

Figure 4-3: Starting the Honda engine.

4. Holding these two handles together firmly, grasp recoil
starter handle and pull rope out with a rapid, continuWARNING: If you strike a foreign object,
ous, full arm stroke. See Figure 4-3. Keeping a firm
stop the engine. Remove wire from the
grip on the starter handle let the rope rewind slowly.
spark plug, thoroughly inspect mower for
Repeat until engine cranks. Let the rope rewind each
any damage, and repair damage before restarting
time slowly.
and operating. Extensive vibration of mower during
WARNING: Wait for the blade to stop comoperation is an indication of damage. The unit
pletely before performing any work on the
should be promptly inspected and repaired.
mower or to remove the grass catcher.

Stopping Engine

1. Release blade control to stop the engine and blade.
2. Disconnect spark plug wire from spark plug and
ground against the engine.

Using Your Lawn Mower

Be sure lawn is clear of stones, sticks, wire, or other
objects which could damage lawn mower or engine.
Such objects could be accidently thrown by the mower
in any direction and cause serious personal injury to the
operator and others.

Using as Mulcher

For mulching grass, remove the grass catcher from the
mower. For effective mulching, do not cut wet grass. If
the grass has been allowed to grow in excess of four
inches, mulching is not recommended. Use the grass
catcher to bag clippings instead.

Using Grass Catcher

You can use the grass catcher to collect clippings while
you are operating the mower. Refer to setup section for
instructions on attaching the grass catcher.

The operation of any
lawn mower can result
in foreign objects
being thrown into
the eyes, which can
damage your eyes
severely. Always wear
safety glasses while
operating the mower,
or while performing
any adjustments or
repairs on it.
Be sure no one other
than the operator is
standing near the lawn
mower while starting
engine or operating
mower. Never run
engine indoors or
in enclosed, poorly
ventilated areas. Engine exhaust contains
carbon monoxide, an
odorless and deadly
gas. Keep hands, feet,
hair and loose clothing
away from any moving
parts on engine and
lawn mower.

3. Lubricate the torsion spring and pivot point on the rear
discharge door periodically with light oil to prevent
rust. See Figure 5-1.
4. Follow the accompanying engine manual for lubrication schedule and instruction for engine lubrication.

Deck Care

Maintaining
Your Lawn
Mower

Clean underside of the mower deck after each use to
prevent build-up of grass clippings or other debris. Follow
steps below for this job.
1. Disconnect spark plug wire. Drain gasoline from lawn
mower, or place a piece of plastic under the gas cap.
2. Tip mower so that it rests on the housing. Keep the
side with the air cleaner facing up. Hold mower firmly.

WARNING: Never tip the mower
more than 90 degrees in any
directions and do not leave the
mower tipped for any length of
time. Oil can drain into the upper
part of the engine causing a
starting problem.

Figure 5-1

WARNING
Always stop engine,
disconnect spark
plug, and ground
against engine before
cleaning, lubricating
or doing any kind of
maintenance on your
machine.

General Recommendations

1. Always observe safety rules when performing
any maintenance.
2. The warranty on this lawn mower does not cover
items that have been subjected to operator abuse
or negligence. To receive full value from warranty,
operator must maintain the lawn mower as
instructed here.
3. Changing of engine-governed speed will void
engine warranty.
4. All adjustments should be checked at least once
each season.
5. Periodically check all fasteners and make sure these
are tight.

NOTE: We do not
recommend the use
of pressure washers
or garden hose to
clean your unit. These
may cause damage to
electric components,
spindles, pulleys, bearings, or the engine. The
use of water will result
in shortened life and
reduce serviceability.

3. Scrape and clean the underside of the deck with a
suitable tool. Do not spray with water.
4. Put the mower back on its wheels on the ground. If
you had put plastic under the gas cap earlier, make
sure to remove it now.

Engine Care

A list of key engine maintenance jobs required for good
performance by the mower is given below. Follow the
accompanying engine manual for a detailed list and
instructions.
1. Maintain oil level as instructed in engine manual.

WARNING: Always stop engine, 2. Service air cleaner every 25 hours under normal
conditions. Clean every few hours under extremely
disconnect spark plug, and
dusty conditions. Poor engine performance and
ground against engine before
flooding usually indicates that the air cleaner should
cleaning, lubricating or doing
be serviced. To service the air cleaner, refer to the
any kind of maintenance on your
engine manual.
machine.
3. Clean spark plug and reset the gap once a season.
Spark plug replacement is recommended at the start
of each mowing season. Check engine manual for
correct plug type and gap specifications.

Lubrication

1. Lubricate pivot points on the blade control at least
once a season with light oil. The blade control must
operate freely in both directions. See Figure 5-1.
2. Lubricate the wheels at least once a season with
light oil (or motor oil). If wheels are removed for any
reason, lubricate surface of the pivot arm and inner
surface of the wheel with light oil. See Figure 5-1.

4. Clean engine regularly with a cloth or brush. Keep the
cooling system (blower housing area) clean to permit
proper air circulation. Remove all grass, dirt and
combustible debris from muffler area.

Blade Care
WARNING: When removing the
cutting blade for sharpening or
replacement, protect your hands
with a pair of heavy gloves or use
a heavy rag to hold the blade.

Maintaining
Your Lawn
Mower

Periodically inspect the blade adapter for cracks,
especially if you strike a foreign object. Replace when
necessary. Follow the steps below for blade service.
1. Disconnect spark plug wire from spark plug. Turn
mower on its side making sure that the air filter and
the carburetor are up.

Figure 5-2

2. Remove the bolt and the blade bell support which
hold the blade and the blade adapter to the engine
crankshaft. See Figure 5-2.
3. Remove blade and adapter from the crankshaft.
4. The blade can be sharpened with a file or on a grinding wheel. Do not attempt to sharpen the blade while it
is still on the mower.

WARNING

5. When sharpening the blade, follow the original angle
of grind. Grind each cutting edge equally to keep the
blade balanced.
6. Remove blade from the adapter for testing balance.
7. Balance the blade on a round shaft screwdriver to
check. Remove metal from the heavy side until it
balances evenly.
Figure 5-3

WARNING: An unbalanced blade Replacing Rear Flap
1. To remove rear flap, lift rear door, and press flap in
will cause excessive vibration
on either side to remove from hole. See Figure 5-3.
when rotating at high speeds. It
may cause damage to mower, and 2. Remove flap from opposite hole and replace with
new flap in the opposite order and manner of
could break causing personal
removal.
injury.
Off-Season Storage
8. Lubricate the engine crankshaft and the inner surface
of the blade adapter with light oil. Slide the blade
adapter onto the engine crankshaft.
9. Place the blade on the adapter such that the side
of the blade marked “Bottom” (or with part number)
faces the ground when the mower is in the operating
position. Make sure that the blade is aligned and
seated on the blade adapter flanges.

The following steps should be taken to prepare your
lawn mower for storage.
1. Clean and lubricate mower thoroughly as described
in the lubrication instructions.
2. We do not recommend the use of a pressure washer
or garden hose to clean your unit.
3. Refer to engine manual for correct engine
storage instructions.

10. Place blade bell support on the blade. Align notches
on the blade bell support with small holes in blade.

4. Coat mower’s cutting blade with chassis grease to
prevent rusting.

11. Replace hex bolt and tighten hex bolt to torque: 450
in. lbs. min., 600 in. lbs. max.

5. Store mower in a dry, clean area. Do not store next
to corrosive materials, such as fertilizer.

To ensure safe operation of your mower, periodically
check the blade bolt for correct torque.

When storing any type of power equipment in a poorly
ventilated or metal storage shed, care should be taken
to rust-proof the equipment. Using a light oil or silicone,
coat the equipment, especially cables and all moving
parts of your lawn mower before storage.

When removing
the cutting blade
for sharpening or
replacement, protect
your hands with a
pair of heavy gloves
or use a heavy rag to
hold the blade.
An unbalanced blade
will cause excessive
vibration when rotating at high speeds. It
may cause damage
to mower, and could
break causing personal injury.

Engine fails to start

Trouble
Shooting

1.
2.
3.
4.

1. Spark plug wire loose.
2. Blocked fuel line or stale fuel.

1.
2.
3.
4.

Engage blade control.
Connect wire to spark plug.
Fill tank with clean, fresh gasoline.
Choke engine as instructed in the
“Operating Your Lawn Mower” section.
5. Clean, adjust gap, or replace.
6. Clean fuel line.
7. Wait a few minutes to restart, but do
not prime.

Vent in gas cap plugged.
Water or dirt in fuel system.
Dirty air cleaner.
Carburetor out of adjustment.

1. Connect and tighten spark plug wire.
2. Clean fuel line; fill tank with clean,
fresh gasoline.
3. Clear vent.
4. Drain fuel tank. Refill with fresh fuel.
5. Refer to engine manual.
6. Refer to engine manual.

Engine overheats

1. Engine oil level low.
2. Air flow restricted.
3. Carburetor not adjusted properly.

1. Fill crankcase with proper oil.
2. Remove blower housing and clean.
3. Refer to engine manual.

Occasional skips
(hesitates) at high speed

1. Spark plug gap too close.
2. Carburetor idle mixture adjustment
improperly set.

1. Adjust gap to .030-inch.
2. Refer to engine manual.

Idles poorly

1. Spark plug fouled, faulty or gap too wide.

1. Reset gap to .030-inch or replace
spark plug.
2. Refer to engine manual.
3. Refer to engine manual.

3.
4.
5.
6.

For repairs beyond
the minor adjustments
listed here, contact
an authorized service
dealer.

Blade control disengaged.
Spark plug wire disconnected.
Fuel tank empty or stale fuel.
Engine not choked.

5. Faulty spark plug.
6. Blocked fuel line.
7. Engine flooded.

Engine runs erratic

Remedy

Cause

Problem

2. Carburetor improperly adjusted.
3. Dirty air cleaner.

Excessive Vibration

1. Cutting blade loose or unbalanced.
2. Bent cutting blade.

Mower will not mulch grass

1. Wet grass.
2. Excessively high grass.

3. Dull blade.

Uneven cut

1. Wheels not positioned correctly.
2. Dull blade.

NOTE: Specifications are
subject to change without
notification or obligation.
Images my not reflect your
exact model and are for
reference purposes only.

1. Tighten blade and adapter. Balance
blade.
2. See an authorized service dealer.
1. Do not mow when grass is wet; wait
until later to cut.
2. Mow once at a high cutting height,
then mow again at desired height or
make a narrower cutting path.
3. Sharpen or replace blade.
1. Place all four wheels in same
height position.
2. Sharpen or replace blade.

Safety Label Found On Your Lawn Mower

7
Safety
Labels

TO REDUCE THE RISK OF INJURY, DO NOT
O P E R AT E U N L E S S DISCHARGE COVER OR
GRASS C AT C H E R I S I N I T S P RO P E R P L AC E .
I F DA M AG E D, R E P L AC E I M M E D I AT E LY.

MAX 15˚

AVOID SERIOUS INJURY OR DEATH
• KEEP H A N D S A N D F E E T A W AY F R O M
R O TAT I N G PA R T S .
• REMOVE OBJECTS THAT CAN BE THROWN
BY THE BLADE IN ANY DIRECTION.
WEAR SAFETY GLASSES.

• DO NOT MOW WHEN CHILDREN OR OTHERS
ARE AROUND.

KEEP HANDS and FEET AWAY

• USE EXTRA CAUTION ON SLOPES. DO NOT
M O W S L O P E S G R E AT E R T H A N 1 5 M O W
A C R O S S , N E V E R U P A N D D O W N . ˚N E V E R
PULL MOWER CLOSE TO YOUR FEET. LOOK
DOWN AND BEHIND BEFORE AND WHILE
M O V I N G B A C K WA R D S .

READ OPERATOR'S MANUAL KEEP SAFETY DEVICES (BLADE CONTROL, TRAILING SHIELD,
DISCHARGE COVER, ETC) IN PLACE AND WORKING. IF DAMAGED, REPLACE IMMEDIATELY.

WARNING
S32102 CD

DO NOT remove safety
(or any) labels from
mower for any reason.

Model Series 580

46
33

9
7

34
37

4
36

16
18
44

45
39
17

38
40
30

19
30

25
15

26
24

Wheel Treads

Pin Bar Tread

Zag Tread

K2 Bar Tread

Ref.
No.

Part No.

Description

Ref.
No.

Part No.

Description

747-1161A

Blade Control

736-0524B

Blade Bell Support

749-1092A

Upper Handle

787-01290

Front Adjustment Plate

747-04080

Grass Catcher Frame

720-0426

Adjustment Lever Knob

749-0928A

Lower Handle

732-0404

Spring Lever

720-0279

Wing Nut

738-0507B

Shoulder Screw

710-1205

Rope Guide

734-2005A

Front Wheel, 8” x 2.125”, Zag

710-1174

Carriage Bolt ,5/16-18 x 2

734-04086

Front Wheel, 7” x 1.8”, Pin Bar

664-04027

Grass Bag Assembly

710-1017

Screw, 1/4-14 x .625

720-04072

Star Knob

746-1130

Control Cable - 40”

736-0182

Washer, Sprg, .500 x 1.00 x .022

746-0554

Control Cable - 40.5”

726-0240

Cable Tie

731-05642

Trailshield

710-0703

Carriage Bolt ,1/4-20

731-1523A†

Front Cover

631-04225

Rear Discharge Door

712-0397

Wing Nut, 1/4-20

782-5004B

Rear Baffle - RH

747-04588

Rear Door Pivot Rod

731-0981A† Hub Cap

732-0866

Spring Lever

732-04090A Torsion Spring - RH

687-02039A Pivot Arm Assembly - RH

734-04093

Rear Wheel, 12” x 2.125”, Zag

734-04089

Rear Wheel, 12” x 1.8”, Pin Bar

710-1652

AB Screw

782-5003A

Rear Baffle - LH

714-0104

Hairpin Clip

720-0312

Spring Lever Grip

710-0654A

TT Sems Screw, 3/8-16 x 1.0

787-01248

Deck - 21”

687-02075A Ht. Adj. Assy. Front - LH (8” Wheel)

782-5002B

Front Baffle

687-02074A Ht. Adj. Assy. Front - RH (8” Wheel)

748-04096

Blade Adapter

687-02099A Ht. Adj. Assy. Front - LH (7” Wheel)

742-0741

Mulching Blade

687-02100A Ht. Adj. Assy. Front - RH (7” Wheel)

710-1044

Hex Screw , 3/8-24 x 1.50

687-02077A Pivot Arm Assy. -RH (8” Wheel)

687-02040A Pivot Arm Assembly - LH

687-02280

Rear Handle Bracket Assy. - LH

687-02279

Rear Handle Bracket Assy. - RH

687-02076A Pivot Arm Assy. - LH (8” Wheel)

712-04065

Flange Lock Nut, 3/8-16

687-02076A Pivot Arm Assy. -RH (7” Wheel)

731-2626†

Bail Cover

687-02077A Pivot Arm Assy. - LH (7” Wheel)

710-0216

Hex Screw, 3/8-16 x 0.75

† If Equipped

This Operators Manual may cover a range of product specifications for various models. Characteristics and features
discussed and/or illustrated in this manual may not be applicable to all models.

8
Parts List

To order replacement
parts, call
1-800-800-7310
or visit us on
the web at
www.mtdproducts.com

MANUFACTURER’S LIMITED WARRANTY FOR

The limited warranty set forth below is given by MTD LLC with respect
to new merchandise purchased and used in the United States, its
possessions and territories.
“MTD” warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original
purchase and will, at its option, repair or replace, free of charge, any
part found to be defective in materials or workmanship. This limited warranty shall only apply if this product has been operated and maintained
in accordance with the Operator’s Manual furnished with the product,
and has not been subject to misuse, abuse, commercial use, neglect,
accident, improper maintenance, alteration, vandalism, theft, fire, water,
or damage because of other peril or natural disaster. Damage resulting
from the installation or use of any part, accessory or attachment not
approved by MTD for use with the product(s) covered by this manual
will void your warranty as to any resulting damage.
Normal wear parts are warranted to be free from defects in material and
workmanship for a period of thirty (30) days from the date of purchase.
Normal wear parts include, but are not limited to items such as: batteries, belts, blades, blade adapters, grass bags, rider deck wheels, seats,
snow thrower skid shoes, shave plates, auger spiral rubber and tires.
HOW TO OBTAIN SERVICE: Warranty service is available, WITH
PROOF OF PURCHASE, through your local authorized service
dealer. To locate the dealer in your area, check your Yellow Pages,
or contact MTD LLC at P.O. Box 361131, Cleveland, Ohio 441360019, or call 1-800-800-7310 or 1-330-220-4683 or log on to our
Web site at www.mtdproducts.com.
This limited warranty does not provide coverage in the following cases:
a. The engine or component parts thereof. These items may carry a
separate manufacturer’s warranty. Refer to applicable manufacturer’s
warranty for terms and conditions.
b. Log splitter pumps, valves, and cylinders have a separate one year
warranty.
c. Routine maintenance items such as lubricants, filters, blade
sharpening, tune-ups, brake adjustments, clutch adjustments, deck
adjustments, and normal deterioration of the exterior finish due to
use or exposure.

e. MTD does not extend any warranty for products sold or exported
outside of the United States, its possessions and territories, except
those sold through MTD’s authorized channels of export distribution.
f. Replacement parts that are not genuine MTD parts.
g. Transportation charges and service calls.
No implied warranty, including any implied warranty of merchantability of fitness for a particular purpose, applies after the
applicable period of express written warranty above as to the
parts as identified. No other express warranty, whether written or
oral, except as mentioned above, given by any person or entity,
including a dealer or retailer, with respect to any product, shall
bind MTD. During the period of the warranty, the exclusive remedy
is repair or replacement of the product as set forth above.
The provisions as set forth in this warranty provide the sole and
exclusive remedy arising from the sale. MTD shall not be liable
for incidental or consequential loss or damage including, without
limitation, expenses incurred for substitute or replacement lawn
care services or for rental expenses to temporarily replace a
warranted product.
Some states do not allow the exclusion or limitation of incidental or
consequential damages, or limitations on how long an implied warranty
lasts, so the above exclusions or limitations may not apply to you.
In no event shall recovery of any kind be greater than the amount of the
purchase price of the product sold. Alteration of safety features of
the product shall void this warranty. You assume the risk and liability
for loss, damage, or injury to you and your property and/or to others and
their property arising out of the misuse or inability to use the product.
This limited warranty shall not extend to anyone other than the original
purchaser or to the person for whom it was purchased as a gift.
HOW STATE LAW RELATES TO THIS WARRANTY: This limited
warranty gives you specific legal rights, and you may also have other
rights which vary from state to state.
IMPORTANT: Owner must present Original Proof of Purchase to obtain
warranty coverage.

d. Service completed by someone other than an authorized service
dealer.

MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019; Phone: 1-800-800-7310, 1-330-220-4683

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