YaRD-MaN
OPERATOR'S MANUAL
21" Self-Propelled
Mulching Mower
Model Number
247.375590
12A-559K402
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-
covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting
applicable local or state ]aws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator.
Inthe 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 depadment, R O. Box 368022 Cleveland, Ohio 44136-9722.
MTD PRODUCTS INC. P.O. BOX 368022 CLEVELAND, OHIO 44136-9722
PRINTED IN U.S.A.
FORM NO. 770-10212A
(11/99)
TABLEOFCONTENTS
Content Page
Maintaining Safety ............................................................................................. 3
Slope Gauge ...................................................................................................... 6
Assembling Your Lawn Mower ........................................................................... 7
Know Your Lawn Mower .................................................................................... 8
Operating Your Lawn Mower ............................................................................. 9
Making Adjustments .......................................................................................... 11
Maintaining Your Lawn Mower ........................................................................... 12
Storing Your Lawn Mower .................................................................................. 16
Troubleshooting ................................................................................................. 17
Parts List ............................................................................................................ 18
FINDINGMODELNUMBER
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.
Before you start assembling your new equipment, please locate the model plate on the
equipment and copythe information from it inthe space provided below. The information on the
model plate is very important ifyou need help from our Customer Support Department or an
authorized dealer.
You can locate the model number by looking down at the rear of the deck. A sample model plate is
explained below. For future reference, please copy the model number and the serial number of the
equipment in the space below.
(Model Number)
(Serial Number)
.Top.ooocTo..c
LEVELAND, OHIO 44136
Copy the model number here:
Copy the serial number here:
CALLINGCUSTOMERSUPPORT
If you have difficulty assembling this product or have any questions regarding the controls, operation or
maintenance of this unit, please call the Customer Support Department.
Call 1-(330) 220-4MTD (4683) or 1- (800)-800-7310 to reach a Customer Support
representative. Please have your unit's model number and serial number ready when you
call. See previous section to locate this information. You will be asked to enter the serial
number in order to process your call.
SECTION1: MAINTAININGSAFETY
This Warning 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 your lawn mower. Failure to comply with these instructions may result in
personal injury. When you see this symbol, heed its warning.
DANGER: Your lawn mower 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 lawn mower is capable of amputating hands and feet and throwing objects.
Failure to observe the following safety instructions could result in serious injury or death.
WARNING: The Engine Exhaust from this product contains chemicals known to the State of
California to cause cancer, birth defects or other reproductive harm.
GENERALOPERATION
• 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.
• Your rotary mower 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.
• Never allow children under 14 years old to operate a
power mower. Children 14 years old and over should
only operate mower under close parental supervision.
Only responsible individuals who are familiar with
these rules of safe operation should be allowed to
use your mower.
• Keep the area of operation clear of all persons,
particularly small children and pets. Stop engine
when they are in the vicinity of your mower to help
prevent blade contact or thrown object injury.
Although the area of operation should be completely
cleared of foreign objects, an object may have been
overlooked and could be accidentally thrown by the
mower in any direction and cause serious personal
injury to the operator or any others allowed in the
area.
• 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. Do not wear loose fitting clothes or
jewelry. They can be caught in moving parts. Never
operate a unit in bare feet, sandals, slippery or light
weight (e.g, canvas) shoes.
• Always wear safety glasses or safety goggles during
operation or while performing an adjustment or repair,
to protect eyes from foreign objects that may be
thrown from the machine in any direction.
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 picked
up and thrown by the mower in any direction and
cause serious personal injury to the operator or any
others allowed in the area. Plan your mowing pattern
to avoid discharge of material toward roads,
sidewalks, bystanders and the like. To help avoid a
thrown objects injury, keep children, bystanders and
helpers at least 75 feet from the mower while it is in
operation.
Do not put hands or feet near or under rotating parts.
Keep clear of discharge opening at all times as the
rotating blade can cause injury.
Many injuries occur as a result of the mower being
pulled over the foot during a fall. Do not hang on to
the mower if you are falling; release the handle
immediately.
Never pull the mower toward you while you are
walking. If you must back the mower away from a
wall or obstruction first look down and behind, and
then follow these steps:
• Step back from the mower to fully extend your
arms.
• Be sure you are well balanced with sure footing.
• • Pull the mower back slowly, no more than half
way toward you.
• Repeat these steps as needed.
Do not operate the mower while under the influence
of alcohol or drugs.
Do not engage the self-propelled mechanism on units
so equipped while starting engine.
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.
• Never operate the mower in wet grass. Always be
sure of your footing. A slip and fall can cause serious
personal injury. Keep a firm hold on the handle and
walk, never run. If you feel you are losing your
footing, RELEASE THE BLADE CONTROL HANDLE
IMMEDIATELY and the blade will stop rotating within
three seconds.
• Mow only in daylight or good artificial light.
• Stop the blade when crossing gravel drives, walks or
roads.
• If the equipment should start to vibrate abnormally,
stop the engine and check immediately for the cause.
Vibration is generally a warning of trouble.
• 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.
• Never operate mower without proper guards, grass
catcher, plates or other safety protective devices in
place.
• Muffler and engine become hot and can cause a
burn. Do not touch.
• Only use accessories approved for this machine by
the manufacturer. Read, understand, and follow all
instructions provided with the approved accessory.
• If situations occur which are not covered in this
manual, use care and good judgment. Contact your
dealer for assistance. Telephone 1-800-800-7310 for
the name of your nearest dealer.
SLOPEOPERATION
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
as shown on the slope gauge, do not operate this unit on
that area or serious injury could result.
DO:
• Mow across the face of slopes; never up and down.
Exercise extreme caution when changing direction on
slopes.
• Watch for holes, ruts, hidden objects, or bumps. Tall
grass can hide obstacles.
• 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 in less than 3
seconds.
DO NOT:
• Do not mow near drop-offs, ditches or embankments.
The operator could lose footing or balance.
• Do not mow slopes greater than 15 degrees as
shown on the slope gauge.
• Do not mow on wet grass. Reduced footing could
cause slipping.
CHILDREN
Tragic accidents can occur if the operator is not alert to the
presence of children. Children are often attracted to the
mower and the mowing activity. Never assume that children
will remain where you last saw them.
• Keep children out of the mowing area and under the
watchful care of a responsible adult other than the
operator.
• Be alert and turn mower off ifa child enters the area.
• Before and while moving backwards, look behind and
down for small children or other objects.
• Never allow children under age 14 to operate the
mower. Children 14 years of age and above should
read and understand the operation instructions and
safety rules in this manual.
• Use extreme care when approaching blind corners,
shrubs, trees, or other objects that may obscure your
vision of a child or hazard.
SERVICE
• Use extreme care in handling gasoline and other
fuels. They are extremely flammable and the vapors
are explosive.
• Use only an approved gasoline container.
• Never remove gas cap or add fuel while the engine is
running. Allow engine to cool at least two minutes
before refueling.
• Replace gasoline cap securely and wipe off any
spilled gasoline before starting the engine as it may
cause a fire or explosion.
• Extinguish all cigarettes, cigars, pipes and other
sources of ignition.
• Never refuel machine indoors because flammable
vapors will accumulate in the area.
• Never store the machine or fuel container inside
where there is an open flame or spark such as a gas
water heater, space heater, or furnace.
• Never run an engine inside a closed area.
• To reduce fire hazard, keep mower free of grass,
leaves, or other debris build-up. Clean up oil or fuel
spillage. Allow mower to cool at least 5 minutes
before storing.
• Before cleaning, repairing, or inspecting, make
certain the blade and all moving parts have stopped.
Disconnect the spark plug wire, and keep the wire
away from the spark plug to prevent accidental
starting.
• Check the blade and engine mounting bolts at
frequent intervals for proper tightness. Also, visually
inspect blade for damage (e.g., bent, cracked or
worn). Replace with blade which meets original
equipment specifications listed in this manual.
4
• Keep all nuts, bolts, and screws tight to be sure the
equipment is in safe working condition.
• Never tamper with safety devices. Check their proper
operation regularly.
• After striking a foreign object, stop the engine,
remove the wire from the spark plug, and thoroughly
inspect the mower for any damage. Repair the
damage before starting and operating the mower.
• Never attempt to make a wheel or cutting height
adjustment while the engine is running.
understand and follow the warnings and instructions in this manual and on the machine.
WARNING - YOUR RESPONSIBILITY: Restricttheuseofthispowermachinetopersonswhoread,
NOTE: Not all safety labels shown may apply to your lawn mower.
DANGER
Grass catcher components are subject to wear,
damage and deterioration, which could expose
moving parts or allow objects to be thrown. For safety
protection, frequently check components and replace
with manufacturer's recommended parts, when
necessary.
Mower b_ades are sharp and can cut. Wrap the
blade(s) or wear gloves, and use extra caution when
servicing them.
Do not change the engine governor setting or
overspeed the engine. Excessive engine speeds are
dangerous.
SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE
A POWER POLE
A CORNER OF A BUILDING
i
15°
OR A FENCE POST
{.O
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 walk-behind 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.
SECTION3: ASSEMBLINGYOURLAWNMOWER
IMPORTANT:This unit is shipped without gasoline or oil
in the engine. Be certain to service engine with gasoline
and oil as instructed in the separate engine manual
before operating your mower.
NOTE: Reference to right or left hand side of the mower
is observed from the operating position.
RemovingUnitFromCarton
• Remove staples, break glue on top flaps, or cut
tape at carton end and peel along top flap to open
carton.
• Remove loose parts if included with unit (i.e.,
operator's manual, oil, etc.)
Cut along corners, lay carton down flat, and remove
packing material.
• Roll or slide unit out of carton and check carton
thoroughly for loose parts.
DisconnectingSparkPlugWire
• Before setting up your lawn mower, disconnect the
spark plug wire from the spark plug and ground to a
bolt on the engine. See Figure 1.
Remove grass bag from unit and set it aside.
Lift up and pull back on the upper handle to raise
the handle into the operating position. Make
certain the lower handle is seated securely into the
handle mounting brackets. Tighten the wing nuts
on each side of the handle (carriage bolts must be
seated properly into the handle) See Figure 2.
NOTE: Your mower is shipped with the handle in the
higher height position. If you wish to lower the height of
the handle, refer to the Adjustment Section at this time.
Remove the hairpin clips from the outer hole in the
weld pins on the handle mounting brackets. Using a
pair of pliers, squeeze one leg of the lower handle
against the handle mounting bracket. Insert the
hairpin clip into the inner hole on the weld pin.
Repeat on other side. See Figure 3.
Handle
Clip
Spark Plug.
Wire
Figure 1
SettingUpYourLawnMower
Carriage
Nut
Spark
.Plug
Handle Bracket
Assembly
Figure 3
Fasten the cables to the lower handle with the two
cable ties found on the lower handle. Be sure to
insert the post on the cable ties into the holes
provided on the lower handle. These holes may be
found on either the inside or outside of the handles.
Pull the cable ties tight and trim off the excess.
See Figure 4.
Cable Tie_._
Handle
Figure 4
• The rope guide is located on the right side of handle
and is secured by a wing nut. See Figure 5.
Figure 2
Starter
Rope
Nut
Rope f
Guide
\ Lower
Handle
Figure 5
With the spark plug wire disconnected and
grounded, hold the blade control handle against the
upper handle, and pull the starter rope out of the
engine.
• Release the blade control handle. Slip the starter
rope into the rope guide. Tighten the wing nut
holding the rope guide to the upper handle.
AttachingTheGrassBag
• Lift the rear discharge door and remove the rear
mulching baffle from the mower.
Rear
Mulching
Baffle
NOTE: Make sure that cables are routed to the outside
of the handle and out of the way when attaching the
grass bag.
Place the hooks of the grass bag into the slots in
the handle bracket assemblies on both sides.
To remove grass bag, lift the rear discharge door
on the mower. Lift the grass bag up and out of the
slots in the handle bracket assemblies. Reinstall
the plastic rear mulching baffle and release the rear
discharge door.
,_ WARNING: This blade control mechanism
Pull Grass Bag
Out and Away / /"
is a safety device. Never attempt to bypass
its operations.
Lift Discharge
Figure 6
SECTION4: KNOWYOURLAWNMOWER
Read this operator's manual and safety rules before
operating your lawn mower. Compare the illustrations
in Figure 8 with your lawn mower to familiarize yourself
with the location of various controls and adjustments.
Save this manual for future reference.
WARNING: The operation of any lawn
,a,
RecoilStarter
The recoil starter is attached to the right handle. Stand
behind the unit and pull the recoil starter to start the
unit. See Figure 8.
BladeControlHandle
The blade control handle is located on the upper handle
of the mower. The blade control handle must be
depressed in order to operate the unit. Release blade
control handle to stop engine and blade. See Figure 8.
mower can result in foreign objects being
thrown into the operator's eyes and causing
severe eye damage. Always wear safety
glasses while operating the mower, per-
forming any adjustments, or repairs on it.
CuttingHeightAdjustmentLevers
The cutting height adjustment levers is located on each
wheel. See Figure 8. To adjust the cutting height, refer
to the Adjustment Section in this manual.
DriveClutch Control
The drive clutch control is located on the upper handle.
Squeeze the drive control to engage the drive system.
Release the clutch control to disengage the drive
system. Release the clutch control to slow down when
approaching an obstacle, making a turn, or stopping.
See Figure 8.
Primer
The primer is used to pump gas into the carburetor. Use
it to assist in starting a cold engine, but do not use it
when restarting a warm engine after a short shutdown.
See Figure 8.
Figure 7
is a safety device. Never attempt to bypass
WARNING: This blade control mechanism
its operations.
Recoil
Starter
Blade Control
Handle
Drive Clutch
Control
Cutting Height
Jstment Levers
StoppingEngine
Release blade controlhandle to stop the engine
and the blade.
• Disconnect spark plug wire and ground it to the
post on the engine.
WARNING: Before using your lawn mower,
again refer to the Safety Section in this
manual. Always be careful.
SECTION5: OPERATINGYOURLAWNMOWER
TowardsBetterMowerPerformance
1. Read this manual in its entirety before you start
the lawn mower. Instructions given here have
been designed for maintaining safety while
getting the best performance from your mower.
Follow the instructions closely.
2. Pour fresh, clean gasoline into the mower's gas
tank until the tank is full. Do not use gasoline
that is more than 30 days old.
3. Always use a fuel stabilizer. It will double the life
of the gasoline used.
4. Make sure to connect the mower's spark plug
wire before trying to start the engine.
5. Add engine oil to the oil fill on the mower engine.
Check the dipstick and add more if necessary.
Remember that the oil level has to touch the fill
line.
6. Locate the primer decal near the primer bulb on
the engine, and read its instruction. Using your
thumb, press the primer bulb slowly as many
times as the decal advises.
7. Hold control handle down and pull rope firmly to
start the engine.
8. Set cutting height adjustment lever to middle
setting and mow a single pass on your lawn;
then adjust to desired height for a closer cut.
9. VVhen bagging the grass clippings, remove
mulch plug/cover and store.
10. When mulching, remove the grass bag and
store. Insert the mulch plug/cover on the mower.
11. In heavy growing season, it may be necessary
to mow lawn twice weekly. Clumps of grass
clippings left behind on the lawn usually means
that the grass is too high to mulch.
12. Before storing the lawn mower for the winter,
use stabilizer-treated fuel and run the tank dry.
13. Thirty days before start of the new season,
check the air filter, spark plug and blade on the
lawn mower, and replace if needed.
9
WARNING: Keep hands and feet away
from chute area on the cutting deck. The
operation of any lawn mower can result in
foreign objects being thrown into the
eyes, which can result in severe eye
damage. Always wear safety glasses or
eye shields.
NOTE: For shipping purposes your mower is set with
the wheels in a low cutting height position. For best
results raise the cutting position until it is determine
which height is best for your lawn. See the adjustment
section for details.
WARNING: Never fill fuel tank indoors with
engine running or until the engine has
been allowed to cool for at least two
minutes after running.
BeforeStarting YourMower
• Attach spark plug wire to spark plug. Make certain
the metal cap on the end of the spark plug wire is
fastened securely over the metal tip on the spark
plug.
• Check for proper drive clutch operation using the
NEUTRAL ADJUSTMENT TEST.
GasandOilFill-Up
Oil
Only use high quality detergent oil rated with API
service classification SF, SG, or SH. Use SAE30 oil
only.
NOTE: Although multi-viscosity oils (5W30, 10W30,
etc.) improve starting in cold weather, they will result in
increased oil consumption when used above 32°F.
Check your engine oil level more frequently to avoid
possible engine damage from running low on oil.
• Remove oil filldipstick.
• With the lawn mower on level ground, use a funnel
to fill engine with oil to FULL mark on dipstick.
Capacity is approximately 20 oz. Be careful not to
overfill. Overfilling will cause the engine to smoke
profusely and will result in poor engine
performance.
• Check the oil level making certain not to rub the
dipstick along the inside walls of the oil fill tube. This
would result in a false dipstick reading. Refill to
FULL mark on dipstick, if necessary. Replace
dipstick and tighten.
• Check oil levelthree times prior to starting engine
to be certain you've gotten an accurate dipstick
reading. Running the engine with too little oil can
result in permanent engine damage.
Gasoline
• Remove fuel cap from the fuel tank.
• Make sure the container from which you will pour
the gasoline is clean and free from rust or foreign
particles. Never use gasoline that may be stale
from long periods of storage in its container.
Gasoline that has been sitting for any period longer
than four weeks should be considered stale.
• Fill fuel tank with clean, fresh, unleaded regular,
unleaded premium or reformulated automotive
gasoline only. Replace fuel cap.
• To avoid engine problems, the fuel system should
be emptied before storage for 30 days or longer.
Drain the gas tank, start the engine and let it run
until the fuel lines and carburetor are empty. Use
fresh fuel next season. See Storing Your Lawn
Mower section for additional information.
NeutralAdjustmentTest
To perform the neutral adjustment test answer the
following questions.
• With the drive clutch control released, push mower
forward and pull it backward. Does it move freely?
• Squeeze the drive clutch control and pull the
mower backward. Do the rear wheels lock?
• Is the drive clutch control cable free of kinks or
sharp bends?
• Ifyou answered "yes" to all three questions, your
mower passed the test and you can start your
mower.
• Ifyou answered "no" to any of the three questions,
you will have to adjust the drive clutch control in the
ADJUSTMENT SECTION.
StartingEngine
• Prime engine as instructed inthe separate engine
manual packed with your unit.
• Your lawn mower may be equipped with a constant
speed throttle, which is set at full throttle for best
performance.
Stand behind the mower and squeeze the blade
control handle against the upper handle.
• Grasp recoil starter handle and pull rope out slowly
until engine reaches the start of compression cycle
(rope will pull slightly harder at this point). Let the
rope rewind slowly. Pull rope with a rapid,
continuous, full arm stroke. Keeping a firm gripon
the starter handle, let the rope return to the starter
slowly.
UsingYourLawnMower
Be sure that the lawn is clear of stones, sticks, wire, or
otherobjects whichcould damage the lawn mower or
the engine. Such objects could be accidently thrown by
the mower in any direction and cause serious personal
injuryto the operator and others.
For best results, do not cut wet grass because it tends
to stick to the underside of the mower, preventing
proper discharge of grass clippings, and could cause
you to slip and fall. New grass, thick grass, or wet grass
may require a narrower cut.
10
For a healthier lawn, never cut off more than one-third
of the total length of the grass. Your lawn should be cut
in the fall as long as there is growth. This mower is
designed to be operated at full throttle to give you the
best cut and do the most effective job of mowing or
mulching.
WARNING: If you strike a foreign object,
stop the engine. Remove wire from the
spark plug, thoroughly inspect the mower
for any damage, and repair the damage
before restarting and operating the
mower. Extensive vibration of the mower
during operation is an indication of
damage. The unit should be promptly
inspected and repaired.
SECTION6: MAKINGADJUSTMENTS
adjustments without first stopping engine
WARNING: Do not at any time make any
and disconnecting spark plug wire,
CuttingHeightAdjustment
Height Adjustment
Lever
Mulching
For effective mulching, do not cut wet grass because it
tends to stick tothe underside of the deck, preventing
proper mulching ofgrass clippings. New or thick grass
may require a narrower cut. The ground speed should
be adjusted to the condition of the lawn. If mowing has
been delayed and the grass has been allowed to grow
in excess of 4", mulching is not recommended. Mow
using the grass bag to reduce the grass height to 3 1/4"
maximum before mulching.
• Remove the hairpin clips from the weld pins on the
handle brackets. Press out on the legs of the lower
handle. Remove lower handle from the mower.
• Turn lower handle around so the notch on the
bottom of the lower handle is facing forward.
Reassemble, placing the bottom holes in the
handle over the weld pins in the handle mounting
bracket.See Figure 10.
• Reassemble the upper handle to the lower handle.
• Place the hairpin clips in the inner holes in the weld
pins and attach the starter rope as instructed in the
Assembly Section.
Figure 9
An adjusting plate and spring lever at each wheel
position provides cutting height adjustment. Each
adjusting plate has nine height positions. When the
spring lever is moved from one location to another the
height ofcut will be changed. Simply depress the lever
towards wheel and move lever assembly to desired
position. See Figure 9.
IMPORTANT:Art wheels must be placed in the same
relative position. For rough or uneven lawns, move the
height adjustment lever to a higher position.This will
help stop scalping of the grass.
HandleHeightAdjustment
Your mower isshipped with the handle in the higher
height position.To lower the height proceed as follows:
Remove the starter rope from the rope guide.
• Remove the upper handle by removing the hand
knobs and carriage bolts. Lay the upper handle out
ofthe way, being careful notto bend or kinkthe
cables.
Lower Handle
Figure 10
DriveClutchControlAdjustment
BottomView
®
Adjustment
Wheel
Figure 11
11
Notch
Ipper
Handle
Drive Clutch
Control
The drive clutch control adjustment wheel is located in
the drive clutch control handle housing and is used to
tighten or loosen the drive belt. You will have to adjust
the drive clutch control if any of the following happens:
• The mower does not propel itself with the drive
clutch engaged.
The mower's drive wheels hesitate with the drive
clutch engaged.
To resolve the above problems, rotate the adjustment
wheel with your fingers. Clockwise to tighten the cable
and counter-clockwise to loosen the cable. See Figure
11.
EngineAdjustments
See the separate engine manual packed with your unit
for adjustments to the engine.
SECTION7: MAINTAININGYOURLAWNMOWER
GeneralRecommendations
• Always observe safety ruleswhen performing any
maintenance.
• The warranty on this lawn mower does not cover
items that have been subjected to operator abuse
or negligence. To receive full value from the
warranty, operator must maintain the lawn mower
as instructed in this manual.
Changing of engine governed speed will void
engine warranty.
CustomerResponsibilities
MAINTENANCE
SCHEDULE
Lubricate wheels
Lubricate blade control
_) Clean deck _
n_ Blade care _
1 # # _ _ W SERVICE
_e_ _e_ _ 2 _ DATES
• Some adjustments will have to be made
periodically to maintain your unit properly. All
adjustments in the Making Adjustments section of
this manual should be checked at least once each
season.
Periodically check all fasteners and make sure
these are tight.
• Follow the maintenance schedule under Customer
Responsibilities to get quality performance from
your lawn mower.
Change oil _
LU Replace air filter
Z
Clean engine ,_
z
uJ Check spark plug
Check spark arrester (if any)
Lubrication
,_ WARNING: Always stop engine and
Blade Control: Lubricate the pivot points on the blade
control handle at least once a season with light oil. The
disconnect spark plug wire before
cleaning, lubricating or doing any kind of
service work on the lawn mower.
blade control must operate freely in both directions.
See Figure 12.
Wheels: Lubricate the wheels at least once a season
with light oil (or motor oil). If the wheels are removed for
any reason, lubricate the surface of the axle bolt and
inner surface of the wheel with light oil. See Figure 12.
Engine: Follow the separate engine manual packed
with you unit for lubrication instructions.
12
Figure 12
Lubricate
Cutting BladeRemoval,Replacement,and Sharpening
• 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.
Remove the bolt and bell washer which hold the
blade-pulley assembly to the engine crankshaft.
See Figure 13. Remove the assembly from the
crankshaft.
• Remove the two bolts and lock nuts from the blade
assembly.
• Remove the blade from the blade adapter and
pulley.
adapter for cracks, especially if you strike
WARNING: Periodically inspect the blade
a foreign object. Replace when necessary,
Maintenance
NOTE: When tipping the unit, empty the fuel tank and
keep the spark plug side of engine up. Never tip the
mower more than 90 degrees 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.
Engine
Refer to the separate engine manual for all engine
maintenance instructions.
• Maintain engine oil as instructed in the separate
engine manual packed with your unit.
• Service air cleaner every 25 hours under normal
conditions. Poor engine performance and flooding
usually indicate that the air cleaner should be
serviced. To service the air cleaner, refer to the
separate engine manual packed with your unit.
• The spark plug should be cleaned and the gap
reset once a season. Spark plug replacement is
recommended at the start of each mowing season.
• Clean the engine regularly with a cloth or brush.
Keep the cooling system (blower housing area)
clean to permit proper air circulation which is
essential to engine performance and life. Be certain
to remove all grass, dirt, and combustible debris
from muffler area.
Deck
The underside of the mower deck should be cleaned
after each use to prevent a buildup of grass clippings,
leaves, dirt, or other matter, ffthis debris is allowed to
accumulate, it will invite rust and corrosion,and may
prevent proper mulching, discharge, or bagging. The
deck may be cleaned by tiltingthe mower and scraping
clean with a suitable tool (make certain the spark plug
wire isdisconnected).
IMPORTANT:We do not recommend the use of a
pressure washer or garden hose to clean your unit.
F:u:: mb,y
Blade m_ _ Lock Nut
Adapter_
Hex Bi, te,iW_s heI;_.._..__
Figure 13
When sharpening the blade, follow the original angle of
grind as a guide. It is extremely important that each
cutting edge receives an equal amount of grinding to
prevent an unbalanced blade. An unbalanced blade will
cause excessive vibration when rotating at high
speeds. It may cause damage to the mower, and could
break causing personal injury.
The blade can be tested by balancing it on a round
shaft screwdriver. Remove metal from the heavy side
untilit balances evenly, it is recommended that the
blade always be removed from the adapter when
testing for balance.
• Before reinstalling the blade-pulley assembly to the
unit, lubricatethe engine crankshaft and the inner
surface of the blade adapter with light oilor engine
oil.
Also lubricatethe bolt holes, bolt and the inner
surface of the nuts.
• Install the blade adapter on the pulley with the "star"
away from the pulley.
• Place the new blade on the blade adapter with the
side marked bottom (or with part number) facing
away from the adapter.
13
Secure the blade to the assembly with two hex
bolts and lock nuts. Tighten the hex bolts to
torque:120 in.lbs, min., 150 in. Ibs. max.
install the blade assembly on the crankshaft.
Secure with the hex bolt and bell washer (cupped
side of washer to blade) and tighten to torque: 450
in.lbs, min., 600 in.lbs, max.
NOTE: To ensure safe operation of your mower, the
blade bolt must be checked periodically for correct
torque.
DriveBeltRemovalandReplacement
• Disconnect the spark plug wire and ground it
against the engine.
• Remove the two shoulder screws from on top of the
deck which secures the front drive cover to the
mower deck. See Figure 14.
Drive
Pulley\
Front Drive
Cover
Keeper
Idler
Screw
Figure 14
• Remove the front drive cover from the unit by lightly
pressing inward on the sides of the front drive
cover. This will release the tabs that secure the
front drive cover to the height adjuster brackets.
Remove the idler from the idler bracket and remove
the belt from the transmission pulley.
Lift and stabilize the front of the deck.
• Loosen the center hex bolt and lower the blade and
engine pulley until there is adequate clearance to
move the belt past the belt keeper. See Figure 15.
• Remove the belt from the engine pulley and around
the blade.
Engine
Pulley
Pulle)
Figure 15
Reassemble in reverse order with new belt. Tighten
the hex bolt to secure the blade to torque: 450-600
in. Ibs.
Begin idler reassembly by inserting bolt up through
the idler bracket hole. Adjust the drive clutch
referring to the Adjustment section.
SECTION8: STORINGYOURLAWNMOWER
The following steps should be taken to prepare your
lawn mower for storage.
• Clean and lubricate mower thoroughly as described
in the lubrication instructions.
IMPORTANT:We do not recommend the use of a
pressure washer or garden hose to clean your unit.
• Refer to engine manual for correct engine storage
instructions.
Coat mower's cutting blade with chassis grease to
prevent rusting.
Store mower in a dry, clean area. Do not store next
to corrosive materials, such as fertilizer.
NOTE: 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.
14
SECTION9: TROUBLESHOOTING
Problem Cause
Engine fails to start 1. Blade control handle disengaged. 1.
2. Spark plug wire disconnected. 2.
3. Fuel tank empty or stale fuel. 3.
4. Blocked fuel line. 4.
5. Faulty spark plug. 5.
6. Engine flooded 6.
Engine runs erratic 1. Spark plug wire loose. 1.
2. Blocked fuel line or stale fuel. 2.
3. Vent in gas plugged.
4. Water or dirt infuel system.
5. Dirty air cleaner.
6. Carburetor out of adjustment.
Engine overheats
Occasional skip (hesitates)
at high speed
Idles poorly 1. Spark plug fouled, faulty or gap too
Excessive vibration 1. Cutting blade loose or unbalanced.
Mower will not mulch grass 1. Engine speed too low.
Uneven cut
NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.
1. Engine oil level low.
2. Airflow restricted.
3. Carburetor not adjusted properly.
1. Spark plug gap too close.
wide.
2. Carburetor improperly adjusted.
3. Dirty air cleaner.
2. Bent cutting blade.
2. Wet grass.
3. Excessively high grass.
4. Dull blade.
1. Wheels not positioned correctly.
2. Dull blade.
Engage blade control handle.
Connect wire 'to spark plug.
Fill tank with clean, fresh gasoline.
Clean fuel line.
Clean, adjust gap, or replace.
Engine must be set at FULL throttle.
Connect and tighten spark plug wire.
Clean fuel line; fill tank with clean, fresh
gasoline
Clear vent.
3.
4.
Drain fuel tank. Refill with fresh fuel.
Clean air cleaner.
5.
6.
Adjust carburetor.
1.
Fill crankcase with proper oil.
2.
Remove blower housing and clean.
3.
Adjust carburetor.
1.
Adjust gap to .030".
1. Reset gap to .030" or replace spark
plug.
2. Adjust carburetor.
3. Clean air cleaner.
1. Tighten blade and adapter. Balance
blade.
2. Replace blade.
1. Engine must be set at FULL throttle.
2. Do not mow when grass is wet; wait
until later to cut.
3. Mow once at a high cutting height, then
mew again at desired height or make a
narrower cutting path.
4. Sharpen or replace blade.
1. Place all four wheels in same height
position.
2. Sharpen or replace blade.
Remedy
15
Model559K
2
3
7
65
12
/
17
6O 24
19
27
76 31
75
74
36
64
44 /
16
Model559K
Ref.
No.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
Part No.
731-1057
731-0620
731-1058
731-1059
710-1667A
746-0960
747-0824
749-0439C
720-0294
712-0234
746-0883
710-1270
720-0279
720-0314
710-1205
746-0550
710-1174
682-3058
682-3059
726-0240
714-0104
710-1007
664-0085
7510042824
631-0075A
751B213146
710-1237
782-0080A
782-5004
710-1017
782-5003
710-0216
736-0331
712-0798
731-1937A
782-5002
Part Description
Upper Drive Cover
Drive Lever
Lower Drive Cover
Mounting Cap
Screw# 10-16 x .75
Drive Cable
Control Lever
Upper Handle
Foam Grip, 9"
Hex Lock Nut, 1/4-20
Throttle Housing
Oval C-Sunk Scr 1/4-20 x 1.31
Handle Knob
Handle Knob
Eye Bolt
Control Cable, 39"
Carriage Bolt 5/16-18 x 2.0
RH Bracket Ass'y
LH Bracket Ass'y (Not Shown)
Cable Tie
Cotter Pin
Self-tapping Screw
Grass Bag
Screw # 12 x .457
Engine Spacer
Clamp Casing
Hex Screw TT #10-32 x .625
21" Rear Discharge Deck
RH Rear Baffle
Screw AB: 1/4-14:.625
LH Rear Baffle
Hex Screw 3/8-16 x .75
Bell Washer .39 x 1.13 x .062
Hex Nut 3/8-16
Transmission Cover
Front Baffle
Ref.
No,
38. 712-0324
39. 756-1146A
40. 748-0411
41. 742-0741
42. 736-0452
43. 710-0606
44. 710-1257
45. 749-0907A
52. 712-0798
53. 736-0356
54. 712-3005
55. 710-0896
56. 682-3056A
57. 736-0270
58. 710-0599
59. 17488A
60. 732-0866
61. 720-0312
62. 738-0507B
63. 736-0105
64. 734-1860
65. 736-0182
66. 736-0456
67. 738-0481A
68. 732-0700
69. 731-1236
70. 747-0996
71. 732-0809
72. 782-7599A
73. 747-0995A
74. 712-0271
75. 711-1293
76. 782-5007
Part No.
682-3057A
17489A
Part Description
Hex Nut 1/4-20
Drive Pulley
Blade Adapter
21" Mulching Blade
Flat Washer .516 x 1.5 x .134
Hex Screw 1/4-20 x 1.50
Hex Screw 3/8-24 x 2.50
Lower Handle
Hex Nut 3/8-16
Bell Washer .39 I.D. x 1.38 O.D.
Hex Flange Lock Nut 3/8-16
Hex Scr. Washer 1/4-14 x .625
RH Handle Bracket
LH Handle Bracket (Not Shown)
Bell Washer .265 x .75 x .062
Hex Screw qq- 1/4-20 x .500
RH Pivot Bar
LH Pivot Bar (Not Shown)
Height Adj. Lever
Foam Grip
Shoulder Screw
Washer .401 x .870 x .063
Wheel, 14 x 2 Yellow (Link Trd.)
Spring Washer .50 I.D. x 1.00.D.
Flat Washer .510 x 1.373 x .04
Shoulder Screw
Wire
Rear Trailing Shield
Pivot Rod
Torsion Spring
Rear Discharge Door
Grass Bag Frame
Hex Nut
Screw
Plastic Mulching Baffle
17
Model559K
46
13
®
39
40
/
(_ 14
. " 32 19
.." "51 16
N, 20
D 36
30
32
31
21
52
53
46
18
Model559K
Ref.
No.
1.
2.
3.
4.
5.
6,
7.
8.
9,
10.
11,
12.
13.
14.
15.
16,
17.
18.
19.
20.
21.
22,
23.
24.
25.
26,
27,
28,
Part No.
712-3025
736-0425
656-0047
736-0425
712-0896
736-0406
782-7598
741-0124
721-0457
750-1050
682-0028
741-0682A
732-0849A
710-0299
736-0570
741-0699
721-0325
618-0300A
721-0329
741-0673
611-0105
736-0520
717-1492
736-0314
736-0569
618-0299A
741-0672
710-1276
Part Description
Hex Jam Nut 5/16-24 29. 618-0298A
Bell Washer .325 x .930 x ,045 30. 732-0708
Pulley 3.82 x .313 x .68 31. 741-0604
Bell Washer .325 x .930 x .048 32. 748-0355
Lock Nut t/4-28 33. 736-0447
Flat Washer .442 x 1.38 x .060 34. 782-0512B
Belt Keeper 35. 782-0511A
Ball Bearing 36. 682-0509
Oil Seal 37. 732-0706
Flange Spacer 38. .732-0707
Idler Bracket Assembly 39. 720-0190
Bearing Sleeve 40. 710-0216
Flat Washer .504 x .700 x.030 41. 736-0474
Hex Cap Screw 1/4-28 x 1.00 42. 716-0102
Flat Washer .865 x 1.145 x .030 43. 782-7551
Needle Bearing .438 x .625 x .500 44. 717-1534
Plug 1/4 x .437 45. 717-1533
Upper Housing 46. 734-1983
Oil Seal .500 x .687 x .094 47. 731-1426
Flange Bearing 48. 682-0512A
Output Shaft 49. 682-0511A
Flat Washer .504 x .700 x .030 50. 682-0030
Pinion Shaft 10T 51. 715-0221
Thrust Washer .375 x .70 x .030 52. 736-3013
Thrust Washer .388 x.625 x .062 53. 714-0101
Lower Housing 54. 738-1002
Flange Bearing .378 x .531 x .370 55. 754-0465
Hex Screw Washer 1/4-20 x .750
Ref.
No,
Part No.
Part Description
Transmission Assembly
Bearing Retainer
Bearing Sleeve .50 I.D.
Bearing Support
Wave Washer 1.5 x 1.0 x .029
RH Height Adjuster Plate
LH Height Adjuster Plate
Pivot Plate Assembly
RH Front Lever
LH Front Lever
Knob
Hex Cap Screw 3/8-16 x .75
Washer
Snap Ring 1.0 Dia.
Wheel Dust Cap
Gear 14T RH FWD
Gear 14T LH FWD
Wheel, 8x2
Hubcap
RH Height Adj. Complete
LH Height Adj. Complete
Cable Idler Bracket
Dowel Pin
Flat Washer 1/2 x 1.00 x .063
Cotter Pin .08 x 1.42
Screw
Belt
19
MANUFACTURER'S LIMITED WARRANTY FOR:
YaRD-MaNY,f/
The limited warranty set forth below is given by MTD PROD-
UCTS INC ("MTD") with respect to new merchandise pur-
chased 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
material 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, com-
mercial use, neglect, accident, improper maintenance, alter-
ation, vandalism, theft, fire, water or damage because of
other peril or natural disaster. Damage resulting from the
installation or use of any accessory or attachment not
approved by MTD Products Inc. for use with the product(s)
covered by this manual will void your warranty as to any
resulting damages.
Normal wear parts or components thereof are subject to sep-
Arate terms as follows: All normal wear part or component
failures will be covered on the product for a period of 90 days
regardless of cause. After 90 days, but within the two year
period, normal wear part failures will be covered ONLY IF
caused by defects in material or workmanship of OTHER
component parts. Normal wear parts and components
include, but are not limited to, belts, blades, blade adapters,
grass bags, rider deck wheels, seats, snow thrower skid
shoes, shave plates and tires. Batteries are covered by a 90-
day limited replacement warranty.
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, please check for a listing in the Yellow Pages or
contact the Customer Service Department of MTD PROD-
UCTS INC by calling 1-800-800-7310 or writing to FrO. Box
368022, Cleveland, Ohio 44136-9722.
This limited warranty does not provide coverage in the
following cases:
a.The engine or component parts thereof. These items
carry a separate manufacturer's warranty. Please refer to
the applicable manufacturer's warranty on these items.
b. Log splitter pumps, valves and cylinders have a separate
one year warranty.
c. Routine maintenance items such as lubricants, filters,
blade sharpening and trine-ups, or adjustments such as
brake adjustments, clutch adjustments or deck adjust-
ments; and normal deterioration of the exterior finish due
to use or exposure.
d. MTD does not extend any warranty for products sold or
exported outside of the United States of America, its
possessions and territories, except those sold through
MTD's authorized channels of export distribution.
No implied warranty, including any implied warranty of
merchantability or 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 or guaranty, 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 War-
ranty, the exclusive remedy is repair or replacement of
the product as set forth above. (Some states do not allow
limitations on how long an implied warranty lasts, so the
above limitation may not apply to you.)
The provisions as set forth in this Warranty provide the
sole and exclusive remedy arising from the sales. MTD
shall not be liable for incidental or consequential loss or
damages including, without limitation, expenses
incurred for substitute or replacement lawn care ser-
vices, for transportation or for related expenses, or for
rental expenses to temporarily replace a warranted prod-
uct. (Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above exclusion
or limitation 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 the 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 use or misuse or inability to use the product.
This limited warranty shall not extend to anyone other than
the original purchaser, original lessee or the person for whom
it was purchased as a gift.
How State Law Relates to this Warranty: This limited war-
ranty gives you specific legal rights, and you may also have
other rights which vary from state to state.
2O
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