MTD 12AI832Q724 Owner’s Manual

Safe Operation Practices • Set-Up • Operation • Maintenance • Service • Troubleshooting • Warranty

L

Self-Propelled Mower m Model Series 830

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

PrintedIn USA FormNo.769-04545

(December15,2008)

ToTheOwner

ThankYou

1

Thank you for purchasing a Lawn Mower manufactured by
MTD LLC. It was carefully engineered to provide excellent

performance when properly operated and maintained.
Please read this entire manual prior to operating the equipment.

It instructs you how to safely and easily set up, operate and
maintain your machine. Please be sure that you, and any other
persons who will operate the machine, carefully follow the
recommended safety practices at all times. Failure to do so could

result in personal injury or property damage.
All information in this manual is relative to the most recent

product information available at the time of printing. Review
this manual frequently to familiarize yourself with the machine,

its features and operation. Please be aware that this Operator's
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. MTD LLC

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

Table of Contents

Safe Operation Practices ........................................ 3

Assembly & Set-Up .................................................. 9

Controls & Features ................................................ 12

Operation ................................................................ 13

Maintenance & Adjustments ................................. 14

If you have any problems or questions concerning the machine,
phone your local authorized MTD service dealer or contact us

directly. MTD's Customer Support telephone numbers, website
address and mailing address can be found on this page. We want
to ensure your complete satisfaction at all times.

Throughout this manual, all references to right and left side of the
machine are observed from the operating position

The engine manufacturer is responsible for all engine-related
issues with regards to performance, power-rating, specifications,
warranty and service. Please refer to the engine manufacturer's
Owner's/Operator's Manual, packed separately with your

machine, for more information.

Service ..................................................................... 16

Troubleshooting ..................................................... 17

Parts List ................................................................. 20

Warranty ................................................................ 24

RecordProductInformation

Before setting up and operating your new equipment, please
locate the model plate on the equipment and record the
information in the provided area to the right. You can locate the
model plate by standing at the operator's position and looking
down at the rear of the deck. This information will be necessary,

should you seek technical support via our web site, Customer
Support Department, or with a local authorized service dealer.

MODEL NUMBER

DIqE]IqE]IqE]IqE]IqD

SERIALNUMBER

DIqFllqFllqFllqNIqD

CustomerSupport

Please do NOT return the machine to the retailer or dealer without first contacting our Customer Support Department.

If you have difficulty assembling this product or have any questions regarding the controls, operation, or maintenance of
this machine, you can seek help from the experts. Choose from the options below:

0 Visit us on the web at www.mtdproducts.com

0 Call a Customer Support Representative at (800) 800-7:310 or (330) 220-468:3
0 Write us at MTD LLC • RO. Box :3611:31 • Cleveland, OH • 441:36-0019

importantSafeOperationPractices

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!

CALIFORNIA PROPOSITION 65

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.

WARNING: Battery posts, terminals, and related accessories contain lead and lead

,A

compounds, chemicals known to the State of California to cause cancer and reproductive
harm. Wash hands after handling.

DANGER: This machine was built to be operated according to the safe operation practices 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 fingers, hands,

toes and feet and throwing objects. Failure to observe the following safety instructions could

result in serious injury or death.

2

GeneralOperation

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

manuals) before operation. Keep this manual in a safe
place for future and regular reference and for ordering

replacement parts

2. Be completely familiar with the controls and the proper use
of this machine before operating it.

3. This machine is a precision piece of power equipment,
not a plaything. Therefore, exercise extreme caution at all
times. This machine has been designed to perform one job:
to mow grass. Do not use it for any other purpose.

4. Never allow children under 14 years of age to operate this
machine. Children 14 and over should read and understand

the instructions and safe operation practices in this manual
and on the machine and should be trained and supervised

by an adult.

5. Only responsible individuals who are familiar with these
rules of safe operation should be allowed to use this

machine.

6. 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.

7. 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.

8. 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.

9. 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.

10. 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.

11. Do not put hands or feet near rotating parts or under the
cutting deck. Contact with blade can amputate fingers,
hands, toes and feet.

12. Amissingordamageddischargecovercancauseblade 27.
contactorthrownobjectinjuries.

13. Manyinjuriesoccurasaresultofthemowerbeingpulled
overthefootduringafallcausedbyslippingortripping.

Donotholdontothemowerifyouarefalling;releasethe
handleimmediately. 28.

14. Neverpullthemowerbacktowardyouwhileyouare
walking.Ifyoumustbackthemowerawayfromawallor

obstructionfirstlookdownandbehindtoavoidtripping
andthenfollowthesesteps:

a. Stepbackfrommowertofullyextendyourarms.
b. Besureyouarewellbalancedwithsurefooting.
c. Pullthemowerbackslowly,nomorethanhalfway

towardyou.

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 machine on a sloped or
hilly area. If the slope is greater than 15 degrees, do not mow it.

d. Repeatthesestepsasneeded.

15. Do not operate the mower while under the influence of
alcohol or drugs. 1.

16. Do not engage the self-propelled mechanism on machines
so equipped while starting engine. 2.

17. 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 3.
contact with the rotating blade. The blade control handle
must operate easily in both directions and automatically

return to the disengaged position when released.

18. Never operate the mower in wet grass. Always be sure of Do Not:
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.

19.

Mow only in daylight or good artificial light. Walk, never
run.

20.

Stop the blade when crossing gravel drives, walks or roads.

21.

If the equipment should start to vibrate abnormally, stop
the engine and check immediately for the cause. Vibration

is generally a warning of trouble.

22.

Shut the engine off and wait until the blade comes to
acomplete stop before removing the grasscatcher or

unclogging the chute. The cutting blade continues to
rotate for afew seconds after the blade control is released.

Never place any part of the body in the blade area until you
are sure the blade hasstopped rotating.

23.

Never operate mower without proper trail shield, discharge
cover, grasscatcher, blade control handle or other safety

protective devices in place and working. Never operate
mower with damaged safety devices. Failure to do socan
result in personal injury.

24.

Muffler and engine become hot and can causea burn. Do
not touch.

25.

Never attempt to make a wheel or cutting height
adjustment while the engine is running.

26.

Only use parts and accessories made for this machine by
the manufacturer. Failure to do so can result in personal
injury.

Do:

1. Do not mow near drop-offs, ditches or embankments, you

2. Do not mow slopes greater than 15 degrees asshown on

3. Do not mow on wet grass. Unstable footing could cause

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. They do not understand the dangers.
Never assume that children will remain where you last saw them.

1.

2.

3.

4.

5.

6.

When starting engine, pull cord slowly until resistance
is felt, then pull rapidly. Rapid retraction of starter cord
(kickback) will pull hand and arm toward engine faster than
you can let go. Broken bones, fractures, bruises or sprains

could result.
If situations occur which are not covered in this manual,

use care and good judgement. Contact Customer Support
for assistance or the name of the nearest service dealer.

Mow across the face of slopes; never up and down. Exercise
extreme caution when changing direction on slopes.

Watch for holes, ruts, rocks, hidden objects, or bumps
which can cause you to slip or trip. 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 rotating within three (3) seconds.

could lose your footing or balance.

the slope gauge.

slipping.

Keep children out of the mowing area and under watchful
care of a responsible adult other than the operator.

Be alert and turn mower off if a child enters the area.
Before and while moving backwards, look behind and

down for small children.
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.

Keep children away from hot or running engines. They can
suffer burns from a hot muffler.

Never allow children under 14 years of age to operate this
machine. Children 14 and over should read and understand

the instructions and safe operation practices in this manual
and on the machine and be trained and supervised by an

adult.

4 I SECTION 2 -- IMPORTANT SAFE OPERATION PRACTICES

Service

SafeHandling OfGas01ine:

I. 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 indoors 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 overfill fuel tank. Filltankto no more than I inch
below bottom of filler neck to provide for fuel expansion.

I0. Replace gasoline cap and tighten securely.
1I. If gasoline is spilled, wipe it off the engine and equipment.

Move machine 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 machine free of grass, leaves,
or other debris build-up. Clean up oil or fuel spillage and
remove any fuel soaked debris.

14. Allow machine to cool at least 5 minutes before storing.

GeneralService:

I. 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's governor setting or over-speed
the engine. The governor controls the maximum safe
operating speed of the engine.

11. Check fuel line, tank, cap, and fittings frequently for cracks
or leaks. Replace if necessary.

12. Do not crank engine with spark plug removed.

13. Maintain or replace safety and instruction labels, as
necessary.

14. Observe proper disposal laws and regulations. Improper
disposal of fluids and materials can harm the environment.

15. According to the Consumer Products Safety Commission
(CPSC) and the U.S. Environmental Protection Agency (EPA),

this product has an Average Useful Life of seven (7) years,
or 140 hours of operation. At the end of the Average Useful
Life have the machine inspected annually by an authorized
service dealer to ensure that all mechanical and safety

systems are working properly and not worn excessively.
Failure to do so can result in accidents, injuries or death.

Donot modify engine

To avoid serious injury or death, do not modify engine in any
way. Tampering with the governor setting can lead to a runaway

engine and cause it to operate at unsafe speeds. Never tamper
with factory setting of engine governor.

SECTION 2 -- IMPORTANT SAFE OPERATION PRACTICES S

Notice Regarding Emissions

Engines which are certified to comply with California and federal
EPA emission regulations for SORE (Small Off Road Equipment)

are certified to operate on regular unleaded gasoline, and
may include the following emission control systems: Engine
Modification (EM), Oxidizing Catalyst (OC), Secondary Air
Injection (SAI) and Three Way Catalyst (TWC) if so equipped.

SparkArrestor

i_ll WARNING: This machine is equipped with an

Ira 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 attester for the muffler is available through your

nearest engine authorized service dealer or contact the service
department, RO. Box 361131 Cleveland, Ohio 44136-0019.

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 laws (if any).

6 I SECTION 2 -- IMPORTANT SAFE OPERATION PRACTICES

Safety Symbols

This page depicts and describes safety symbols that may appear on this product. Read, understand, and follow all instructions on the
machine before attempting to assemble and operate.

READ THE OPERATOR'S MANUAL(S)
Read, understand, and follow all instructions in the manual(s) before attempting to

assemble and operate

DANGER -- ROTATING BLADES

To reduce the risk of injury, keep hands and feet away. Do not operate unless discharge cover
or grass catcher is in its proper place. If damaged, replace immediately.

®

i|1_

Do not mow when children or others are around.

IRFS

_1_ DANGER-- HAND/FOOT CUT

Keep hands and feet away from rotating parts.

DANGER -- THROWN DEBRIS
Remove objects that can be thrown by the blade in any direction. Wear safety glasses.

DANGER -- SLOPES
Use extra caution on slopes. Do not mow slopes greater than 15°.

,_ _ WARNING--GASOLINEIS FLAMMABLE

__\_%._ and muffler to cool before touching.

Allow the engine to cool at least two minutes before refueling.

WARNING-- CARBON MONOXIDE

Never run an engine indoors or in a poorly ventilated area. Engine exhaust contains carbon
monoxide, an odorless and deadly gas.

WARNING-- HOT SURFACE

Engine parts, especially the muffler, become extremely hot during operation. Allow engine

follow the warnings and instructions in this manual and on the machine.

Ii_ WARNING: Your Responsibility--Restrict the use of this power machine to persons who read, understand and |

SAVETHESEINSTRUCTIONS!

SECTION 2 -- IMPORTANT SAFE OPERATION PRACTICES 7

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Sight and hold this levelwith avertical tree...

,_ or a corner of a building...

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15°

Usethis page as a guide to determine slopes where you may not operate safely.

WARNING: Do not operate your lawn mower on such slopes. 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. 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.

AssembJy& Set-Up

Contents of Carton

3

One Lawn Mower
One Grass Catcher

One Lawn Mower Operator's Manual
One Engine Operator's Manual

Assembly

NOTE: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.

Handle

1.

Remove any packing material which may be between
upper and lower handles.

a. Pull up and back on upper handle as shown in Fig.

3-1. Make certain the lower handle is seated securely
into the handle mounting brackets. Do not crimp

cable while lifting the handle up.

One Bottle of Oil
One Side Discharge Chute

2.

Tighten star knobs securing lower handle to handle
brackets. See Fig. 3-2. Make certain the lower handle is
seated securely into the handle mounting brackets.

f

%

Figure 3-1

b. Tighten star knobs to secure upper handle to lower

handle. Make sure that each carriage bolt is seated
properly in the handle.

Figure 3-2

3.

The rope guide is attached to the right side of the upper
handle. See Fig. 3-3. Loosen the wing nut which secures the
rope guide.

Figure :3-3

a_

Hold blade control against upper handle.

b.

Pull starter rope out of the engine. Release blade
control.

c. Slip starter rope into rope guide.
d. Tighten wing nut.

GrassCatcher

Follow steps below to assemble the grass catcher. Make
certain bag is turned right side out before assembling
(warning label will be on the outside).

a. Place bag over fra me so that its black plastic side is

at the bottom. See Fig. 3-4.

c. Attachcentertopofbagfrominsideofframe.

Beforeattachingthegrasscatcher,themulchingbaffle
mustberemoved.

a. Liftreardischargedoor.
b. Removemulchingbaffle.SeeFig.3-5.

Figure 3-5

3_

Follow the steps below to attach the grass catcher:

a. Lift rear discharge door. See Fig. 3-6.

f

'°1

Figure 3-4

b. Slip plastic channel of grass bag over hooks on the

frame. All the plastic channels except center top of
bag attach from outside of frame.

SECTION 3 -- ASSEMBLY& SET-UP

\

Figure 3-6

b. Place grass catcher on the pivot rod. Let go of

discharge door so that it rests on the grass catcher.

on the grass catcher are firmly seated on the pivot

_ ARNING: Never operate mower unless the hooks

rod and the rear discharge door rests firmly against

top of the grass catcher.

SideDischargeChute

To convert to side discharge, make sure grass catcher is off of the
unit and rear discharge door is closed.

1. On the side of the mower, lift the mulching plug. See Fig.
3-7.

Adjustments

CuttingHeight

The cutting height adjustment lever is located above the rear left
wheel.

1. Depress height adjustment lever towards wheel.

2. Slide lever to desired position for a change in cutting
height. See Fig. 3-8.

Figure 3-7

2_

Slide two hooks of side discharge chute under hinge pin on
mulching plug assembly. Lower the mulching plug. Do not

remove side mulching plug at any time, even when you are
not mulching.

/

/ /

//

Figure 3-8

3. Release lever towards deck.

Set-Lip

(;asand OilFill-Up

Refer to the separate engine owner's manual for additional
engine information.

1. Add oil provided before starting unit for the first time out
of the box.

2_

Service the engine with gasoline as instructed in the
separate engine owner's manual.

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.

,J

SECTION3 -- ASSEMBLY& SET-UP 11

ControlsandFeatures

f

4

Control

DeedControl

Recoil Starter

BladeControl

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.

Never attempt to bypass its operations.

_ ARNING: This blade control is a safety device.

DriveControl

The drive control is located on the underside of the upper
handle and isused to engage the drive. Squeeze it against the
upper handle to engage the drive; release it to stop mower from

propelling, See Fig,4-1,

Cutting Height
Adjustment Lever

Figure 4-1

RecoilStarter

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

SpeedControl

The speed control is located on the variable speed control
housing on the upper handle, This control is used to select the
forward speed of the mower. See Fig. 4-1 inset.

IMPORTANT: Move the speed control only when the engine is
running, Changing the speed control setting with the engine off

can damage the mower.
NOTE:The speeds noted on the speed control are not exact.

Speed will vary depending on belt wear, cable wear, and mowing
conditions.

Cutting HeightAdjustmentLever

The cutting height adjustment lever is located above the left
rear wheel. To adjust the cutting height, refer to the "Assembly &
Set-Up" Section.

MulchPlug

The mulch plug is used for mulching purpose. Instead of
collecting the grass clippings in the grass catcher, your mower
has the option of recirculating the clippings back to the lawn.

Make sure that the rear discharge door is closed and the grass
catcher is removed from unit while mulching.

Operation

Starting Engine

WARNING: Be sure no one other than the operator

isstanding 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.

1.

If equipped, place the fuel valve lever found on the left side
of the engine into the ON (OPEN)position. SeeFig. 5-1.

2.

Move the choke lever (if equipped) all the way backward
into the choke position.

3.

Standing behind the mower, squeeze the blade control
against upper handle. The choke (if equipped) will now
begin to slowly return to the off choke position after
activating the blade control. Therefore, quickly move onto
step four below.

4.

Holding these two handles together firmly, grasp recoil
starter handle and pull rope out with a rapid, continuous,
full arm stroke. See Fig. 5-1.Keeping a firm grip on the
starter handle let the rope rewind slowly. Repeat until
engine cranks. Let the rope rewind each time slowly.

Stopping Engine

1. Release blade control to stop the engine and blade.

before performing any work on the mower or to

i_ WARNING: Wait for the blade to stop completely

UsingYourLawnMower

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.

_ WARNING: The operation of any lawn mower can

1. Once the engine is running, squeeze the drive control

2. To change speed, move speed control to the desired speed.

remove the grass catcher.

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.

against the upper handle to propel mower.

NOTE: When selecting a drive speed, use the first speed
until you are comfortable and familiar with the operation

of the mower.

Figure 5-1

_bk ARNING: If you strike a foreign object, stop the

engine. Remove wire from the spark plug,
thoroughly inspect mower for any damage, and

repair damage before restarting and operating.
Extensive vibration of mower during operation is an
indication of damage. The unit should be promptly
inspected and repaired.

UsingasMulcher

For mulching grass, remove the grass catcher, insert rear mulch
plug, and remove side discharge chute from the mower. For
effective mulching, do not cut wet grass.If the grass has been
allowed to grow in excessof four inches, mulching is not

recommended. Usethe grass catcher to bag clippings instead.

UsingGrassCatcher

You can use the grass catcher to collect clippings while you are
operating the mower.

1. Attach grass catcher following instructions in the
"Assembly & Set-Up" section. Grass clippings will

automatically collect in bag as you run mower. Operate
mower till grass bag is full.

2. Stop engine completely by releasing the blade control.
Make sure that the unit has come to a complete stop.

3. Lift discharge door and pull grass bag up and away from
the mower to remove the bag. Dispose of the grass
clippings and reinstall the bag when complete.

13

Maintenance&Adjustments

Maintenance

GeneralRecommendations

Always observe safety rules when 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 warranty, operator must maintain
the lawn mower as instructed here.

Changing of engine-governed speed will void engine
wa rra nty.

All adjustments should be checked at least once each
season.

Periodically check all fasteners and make sure these are
tight.

WARNING: Always stop engine, disconnect spark

plug, and ground against engine before performing

any type of maintenance on your machine.

Lubrication

1. Lubricate pivot points on the blade and drive controls
at least once a season with light oil. These controls must

operate freely in both directions. See Fig. 6-1.

2. Lubricate the wheels and rear wheel gears 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 Fig. 6-1.

3. Lubricate the torsion spring and pivot points on the rear
discharge door and side mulch plug periodically with light
oil to prevent rust. See Fig. 6-1.

4. The transmission is pre-lubricated and sealed at the factory
and does not require lubrication.

5. Follow the accompanying engine manual for lubrication
schedule and instruction for engine lubrication.

DeckCare

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.

any direction and do not leave the mower tipped for

WARNING: Never tip the mower more than 90° in

any length of time. Oil can drain into the upper part

of the engine causing a starting problem.

3. Scrape and clean the underside of the deck with a suitable
tool. Do not spray with water.

IMPORTANT: Do not use a pressure washer or garden hose
to clean your unit. These may cause damage to bearings,

or the engine. The use of water will result in shortened life
and reduce serviceability.

4. Put the mower back on its wheels on the ground. Ifyou had
put plastic under the gas cap earlier, make sure to remove it

now.

Figure 6-1

EngineCare

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.

Maintain oil level as instructed in engine manual.
Service air cleaner every 25 hours under normal conditions.

Clean every few hours under extremely dusty conditions.
Poor engine performance and flooding usually indicates

that the air cleaner should be serviced. To service the air
cleaner, refer to the engine manual.

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.

Clean engine regularly with a cloth or brush. Keep the
top of the engine clean to permit proper air circulation.

Remove all grass, dirt, and combustible debris from muffler
area.

Repladng RearFlap

1. To remove rear flap, lift rear door, remove screw, and press
flap in on either side to remove from hole. See Fig. 6-2.

3_

With engine off, shift back to first speed. This will provide
slack in the cable.

4.

Remove back cover of speed control housing by removing
the three screws securing it to the housing. See Fig. 6-3.

r

Figure 6=3

Figure 6=2

2. Remove screw and flap from opposite hole and replace
with new flap in the opposite order and manner of

removal.

Adjustments

VariableSpeed(:able

Periodic adjustment of the variable speed cable may be
necessary due to normal wear on the drive system. Adjustment is

needed if unit begins to run too slow or too fast.

1. Start engine and place shift lever in the third speed
position.

2. Stop engine and disconnect spark plug wire and ground it
against engine.

5_

Remove screw and flat washer securing cable. See Fig. 6-3.
NOTE:Make sure to take note of which slot in housing

cable is in.

6_

Using a pair of needle nose pliers or similar tool, move
eyelet in cable only one slot to the left in housing as shown
in Fig. 6-4.

f

....2..............

Figure 6=4

NOTE: Moving eyelet to the left speeds unit up; moving it
to the right slows it down.

7_

Replace screw and washer removed earlier and reassemble
back of housing.

\

\

J

SECTION 6 -- MAINTENANCE & ADJUSTMENTS 15

Service

7

BladeCare

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.

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 boot from spark plug. Turn mower
on its side making sure that the air filter and the carburetor

are facing up.

2.

Remove the bolt and the blade bell support which hold the
blade and the blade adapter to the engine crankshaft. See
Fig. 7-1.

3.

Remove blade and adapter from the crankshaft. See Fig.
7-1.

/

Blade Bell _._ ......

Support ........ Bolt

k_ j

Figure 7-1

IMPORTANT: When removing these items, a wave washer
may also come off with the adapter. Be sure to include this
washer when reassembling the blade adapter. Failure to do
so will result in the unit not being able to change speeds.

4.

Remove blade from the adapter for testing balance.
Balance the blade on a round shaft screwdriver to check.

Remove metal from the heavy side until it balances evenly.
When sharpening the blade, follow the original angle of
grind. Grind each cutting edge equally to keep the blade

balanced.

excessive vibration when rotating at high speeds. It

_ ARNING: An unbalanced blade will cause

5. Lubricate the engine crankshaft and the inner surface

6. Place blade bell support on the blade. Align notches on the

7. Replace hex bolt and tighten hex bolt to torque: 450 in. Ibs.

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

may cause damage to mower and could break
causing personal injury.

of the blade adapter with light oil. Slide the blade
adapter (and wave washer, if applicable) onto the engine

crankshaft. 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.

blade bell support with small holes in blade.

rain., 600 in. Ibs. max.

Belt Care

NOTE: Several components must be removed in order to change
the mower's belt. See an authorized Service Dealer to have your
belt replaced.

0ff-SeasonStorage

The following steps should be taken to prepare your lawn mower
for storage.

Clean and lubricate mower thoroughly as described in the
lubrication instructions.

Do not use a pressure washer or garden hose to clean your
unit.

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

Refer to engine manual for correct engine storage
instructions.

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

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.

Troubleshooting

Problem

Engine Fails to start

1.

Blade control disengaged. 1.

2.

Spark plug boot disconnected. 2.

3.

Fuel tank empty or stale fuel. 3.

4.

Engine not primed (if equipped with primer). 4.

5. Faulty spark plug.

6. Blocked fuel line.

Z Engine flooded.

Cause

Remedy

Engage blade control.
Connect wire to spark boot.

Fill tank with clean, fresh gasoline.
Prime engine as instructed in the Operation

section.

5. Clean,adjust gap, orreplace.

6. Cleanfuel line.
Z Waita few mmutes to restart, butdo not

prime.

B,

Fuel valve (if equipped) closed. 8.

9.

Engine not choked (if equipped with choke). 9.

10.

Burnt fuse. (Electric Start only)

Engine runs erratic

Engine overheats 1. Fill crankcase with proper oil.

Occasional skips 1. Adjust gap to .030".

(hesitates) at
high speed

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

Excessive Vibration Cutting blade loose or unbalanced. 1.

Mower will not

mulch grass

1.

Spark plug boot loose.

Blocked fuel line or stale fuel.

2.

3.

Vent in gas cap plugged.

4.

Water or dirt in fuel system.

5.

Dirty air cleaner.

6.

Unit running with CHOKE (if equipped)

applied.

1.

Engine oil level low.

2.

Air flow restricted.

1.

Spark plug gap too close.

1.

2.

Dirty air cleaner. 2.

1.

2.

Bent cutting blade. 2.

1, Wet grass. 1,

2, Excessivelyhigh grass. 2.

3. Dull blade. 3.

Open fuel valve. See engine manual.
Choke engine. See engine manual.

10.Replace fuse (see Service Section).

1. Connectand tighten spark plug boot.

2. Clean fuel line; fill tank with clean, fresh
gasoline.

3. Clear vent.

4. Drain fuel tank. Refill with fresh fuel.

5. Refertoengine manual.

6. Push CHOKE knob in.

2. Clean area around and on top of engine.

Reset gap to .030" or replace spark plug.
Refer to engine manual.

Tighten blade and adapter. Balance blade.

See an authorized service dealer.

Do not mow when grass is wet; wait until
later to cut.

Mow once ata high cutting height, then
mow again at desired height or make a
narrower cutting path.

Sharpen or replace blade.

Continued on next page

17

Problem

Cause

Remedy

Uneven cut

1. Wheels not positioned correctly.

2. Dull blade.

1. Place all four wheels in same height position
(if equipped with individual height adjusters).

2. Sharpen or replace blade.

SECTION 8 -- TROUBLESHOOTING

9

19

ModelSeries830

21

28

11

15

29

i"-.24

I0

ModelSeries830

Ref

I Part Number Description

No.

1

2
3

4
5
6

7

8
9

lO
11

12
13
14

15
16
17

18

19
20
21

22
23
24
25

746-04440
735-04059

747-04994
732-04516
747-04995
746-04438

749-04555
725-0157
732-04535
710-0599

787-01618-0629
710-0654A
787-01346
731-06304

726-0201
710-0779A
710-0895

736-3000
936-0275
715-04073
731-06873

710-1017
746-04439
731-06173
710-3025

Drive Cable
Rubber Grommet

Drive Control
Shift Spring

Blade Control
Control Cable

Lower Handle
Cable Tie

Torsion Spring, LH
TT Screw, 1/4-20 x .500
21-inch Deck

TT Screw, 3/8-16 x 1.00
Front Deck Baffle

Variable Spd. Cont. Panel Cover
Speed Nut

Screw, #10-16 x .500
Screw, 1/4-15 x .750

Washer, Flat, .250 x .750 x .119
Washer, Flat, .344 x .688 x .065

Dowel Pin
Variable Speed Control Panel

Screw, AB, 1/4-14 x .625
Variable Speed Cable

Rear Baffle
Screw, 5/16-18 x .625

Ref

No,
26
27
28
29

30
31
32
33

34
35
36
37

38
39
40

41
42
43
44

45
46
47
48
49

Part Number Description

712-04063
731-05462A
731-05157
731-05702

710-1241
720-04072
732-04534
747-05034

647-04051-0637

964-04046A
710-1174
720-0279

710-1205
749-04504
736-0270

732-1014
17032A
747-0710
987-02055

731-04177
710-04373A
728-0199
731-06189
731-06193

Flange Lock Nut, 5/16-18
Trail Shield

Rear Mulching Baffle
Rear Door

Screw, 1/4-15 x 1.00
Star Knob

Torsion Spring, RH
Door Pivot Rod
Grass Catcher Frame

Grass Catcher
Carriage Bolt, 5/16-18 x 2.00

Wing Nut
Eye Bolt

Upper Handle
Bell Washer, .265 x .75 x .062
Torsion Spring
Chute Deflector Adapter

Hinge Pin
Mulch Plug Assembly
Side Discharge Chute

Screw, #12-16 x .75
Rivet, Plastic
4 Speed Actuator
Speed Selector Level

21

ModelSeries830

47

48_

14

21

29

28

..._ 12

24

16"_ 7

36I_ _'_'42

_'_

31.-'_ "_25

ModelSeries830

Ref

I Part Number Description

No.

1

2
3

4
5
6

7

8
9

lO
11

12
13
14

15
16
17

18

19
20
21

22
23
24

954-04176A
732-04338C

720-04113
917-04540B
738-04278
710-0895

749-04267A-0637

687-02204B-0637

731-05470
741-04136B

734-04014B
712-04065
934-04430

710-04531
917-04539B

731-06284
731-06974

687-02415
731-05872
716-0198
687-02314A-0637

732-04630
756-04316A
936-0406

V-Belt

Spring Lever
Height Adjuster Knob

Spur Gear, 14T- LH
Shldr. Screw, 1/4-20 x 0.50

Screw, HL, 1/4-15 x .750
Cross Bracket

Front Bracket Assembly
Clip Spacer

Split Hex Flange Bearing
Front Wheel

Flange Lock Nut, 3/8-16
Rear Wheel

Screw, 1/4-20 x .39
Spur Gear, 14T- RH

Baffle
Wheel Dust Cover

Transmission Bearing Support

Clip Spacer
Retaining Ring .875

Rear Bracket Assembly
Compression Spring
Upper Pulley

Flat Washer, .442 x 1.38 x .060

Ref

I Part Number Description

No,
25
26
27
28

29
30
31
32

33
34
35
36

37
38
39

40
41
42
43

44
45
46
47
48

756-04317A

687-02322-0637

915-0221

618-04826A
687-02323-0637

748-0390
732-04313
748-04096

710-1044
736-0524B
942-0741
936-0447

710-0599
731-06112A
956-04046

756-04311A
736-04413
710-04774
736-0242

732-04543
787-01673

750-05008
736-0369
732-04646

Lower Pulley
Handle Bracket Assembly LH
Dowel Pin

Transmission Assembly

Handle Bracket Assembly RH
Bearing Support Spacer

Extension Spring
Blade Adapter

Screw, 3/8-24 x 1.50
Blade Bell Support
21" Mulching Blade

Washer, Wave, 1.5 x 1.0 x .029

TT Screw, 1/4-20 x .500

Engine Baffle
Lower Pulley Assembly
Pulley, Half

Wash., Wave, .385 ID x .598 OD
Screw, 1/4-15 x 1.250

Washer, Bell, .340 x .872 x .080

Ring, .3751D x .054
Gear Retainer Strap

Spcr., 25mm x 1.375

Washer, Flat, .508 x 1.00 x .020

Spr, Wave

23

MANUFACTURER'S LiMiTED WARRANTY FOR

The limited warranty set forth below is given by MTD LLC with
respect to new merchandise purchased andused in the United States
and/or its territories and possessions, and by MTD Products Limited

with respect to new merchandise purchased and used in Canadaand/
or its territories and possessions (either entity respectively, "MTD").

"MTD" warrants this product (excluding its Normal WearParts and
Attachments as described below) against defects in material and
workmanship for a period of two (2) years commencing onthe 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 beensubject to misuse,
abuse, commercial use, neglect, accident, improper maintenance,

alteration, vandalism, theft, fire, water, or damage because of other
peril or natural disaster. Damageresulting from the installation or use
of any part, accessory or attachment not approved by MTD for use
with the product(s) covered bythis manual will void your warranty as
to any resulting damage.

Normal WearParts arewarranted to befree from defects in material
andworkmanship 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, tines, grass bags,

wheels, rider deck wheels, seats, snow thrower skid shoes, friction
wheels, shaveplates, auger spiral rubber andtires.

Attachments-- MTD warrants attachments for this product against
defects in material and workmanship for a period of one (1) year,
commencing on the date of the attachment's original purchase or

lease.Attachments include, but are not limited to items such as:
grass collectors and mulch kits.

HOWTO OBTAINSERVICE:Warranty service is available, WITH
PROOFOFPURCHASE,through your local authorized service dealer.
Tolocatethe dealer in your area:

In the U.S.A.
Checkyour Yellow Pages,or contact MTD LLC at RO. Box

361131, Cleveland, Ohio 44136-0019, or call 1-800-800-7310,
1-330-220-4683 or log on to our Web site at www.mtdproducts.

com.

In Canada
Contact MTD Products Limited, Kitchener, ON N2G4J1, or call

1-800-668-1238 or logon to our Web site at www.mtdcanada.com.
This limited warranty does not provide coverage in the following

cases:
a. Theengine or component parts thereof. These items may carry a

separate manufacturer's warranty. Referto applicable manufac-
turer's warranty for terms and conditions.

b. Log splitter pumps, valves, and cylinders havea separate one-

yearwarranty.

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

dueto use or exposure.

d. Service completed by someone other than an authorized service

dealer.

e. MTD does not extend any warranty for products sold or exported

outside of the United States and/or Canada,andtheir respective
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.
h. MTD does not warrant this product for commercial use.

No implied warranty, includingany implied warranty of
merchantability of fitness for a particular purpose, applies after
the applicable periodof 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 personor entity,

includinga dealer or retailer, with respect to any product,shall
bind MTD. Duringthe period of the warranty, the exclusive remedy

is repair or replacement of the productas set forth above.
The provisionsas set forth inthis warranty providethe sole and

exclusive remedy arising from the sale. MTD shall not be liable
for incidental orconsequential loss or damage including, without

limitation, expenses incurred for substitute or replacement lawn
careservices 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 begreater 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
andtheir 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.
HOWSTATELAW RELATESTOTHISWARRANTY: This limited

warranty givesyou 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.

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

MTD Canada Limited =KITCHENER, ON N2G 4J1; Phone 1=800=668=1238

GDOC-lO0015 REV. B