Yard Machines 810, 829 User Manual

OPERATOR’S MANUAL

Model Series

810 thru 829

Model 820 Series Shown

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 laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 368022 Cleveland, Ohio 44136-9722.

MTD PRODUCTS INC. P.O. BOX 368022 CLEVELAND, OHIO 44136-9722

PRINTED IN U.S.A.

FORM NO.

770-10405.fm

(2/00)

TABLE OF CONTENTS

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

Troubleshooting.................................................................................................15

Parts List............................................................................................................16

FINDING MODEL NUMBER

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 copy the information from it in the space provided below. The information on the model plate is very important if you 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)

CLEVELAND, OHIO 44136

(Serial Number)

MTD PRODUC TS INC

Copy the model number here:

Copy the serial number here:

CALLING CUSTOMER SUPPORT

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.

For more details about proper lawn care, visit our website at www.mtdproducts.com

SECTION 1: MAINTAINING SAFETY

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.

GENERAL OPERA TION

• 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 replacemen t 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 . Childr en 14 year s old an d over s hould 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.

• Thoroug hly inspect the ar ea where the equipm ent 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 rotatin g.

• 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 instruct ions 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.

SLOPE OPERA TI ON

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 ex treme ca utio n when c hangin g dire ction on slopes.

• Watch for ho les, ruts, hidden o bjects, or bumps. Tal l 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 if a 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 ther e is an o pen fl ame or s park such as a ga s 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.

• 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.

• Grass catcher components are subject to wear,

• Mower blades are sharp and can cut. Wrap the

• Do not change the engine governor setting or

WARNING - YOUR RESPONSIBILITY: Restrict the use of th is power mac hine to p ersons wh o read,

understand and fo llow th e warnings and ins tructions in this manual a nd on the mach ine.

NOTE: Not all safety labels shown may apply to your lawn mower.

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.

blade(s) or wear gloves, and use extra caution when servicing them.

overspeed the engine. Excessive engine speeds are dangerous.

SECTION 2: SLOPE GAUGE

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

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.

Do not mow on inclin es with a s lo pe i n e xces s of 1 5 de gr ees ( a r ise o f approximately 2-1/2 feet every 10 fee t). A ri di ng m owe r could

overturn and cause serio us injur y. If oper ating a walk-be hind mo wer on suc h a slope, i t is ex tremely diffic ult to maint ain your footing

and you could slip, resulting in serious injury.

A CORNER OF A BUILDING

OR A FENCE POST

SIGHT AND HOLD THIS LEVE L WITH A VERTICAL TREE

A POWER POLE

WARNING

15°

SECTION 3: ASSEMBLING YOUR LAWN MOWER

IMPORT ANT :

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.

This unit is shipped without gasoline or oil

Removing Unit From Carton

• 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.

Disconnecting Spark Pl ug Wire

• 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.

Stud

Spark Plug Wire

• Secure the handle assembly by placing the hairpin clips in the inner hole on weld pins.

• The rope guide is attached to the right side of upper handle. Loosen the wing nut which secures the rope guide.

• With the spark plug 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 and tighten the wing nut.

• Make certain all nuts and bolts are tightened securely.

Attaching Bag To Mower

• Swing open the chute door on the catcher panel and hold in this position. See Figure 2.

Hook On Frame

Grass Catcher Frame

Channel On Mower

Chute Door

Spark Plug Wire

Spark Plug

Figure 1

Attaching Handle to Mower

• For shipping purposes, your mower is set with the rear wheels in the lowest cutting position. Raise the rear wheels to the highest setting for assembly of handle.

• Remove the hairpin clips from the outer hole in the weld pins on the handle mounting brackets.

• Lift the handle and attach by placing the bottom holes in the lower handle over the weld pins on the handle mounting brackets. Make sure the lower handle is seated securely into the handle mounting brackets.

• Pull up on the upper handle to raise it into the operating position. Tighten the wing nuts on each side of the handle.

NOTE: Your mowe r 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.

Rear Discharge Chute Assembly

Figure 2

• Slide the frame of the grass catcher down into the channels on each side of the mower. The hooks on the frame go over the panel on the discharge chute.

• To remove the grass catcher, hold the chute door and lift the grass catcher straight up using the handle.

Converting Mow er To Side Discharge

• Remove the rear d ischar ge chu te as sembl y by removing two wing nuts. Lift up on the two bottom corners of the discharge chute assembly and slide it off the deck.

• Attach the side chute deflector by first placing it over the rear bolt in the side of the deck. Then slide the notch in the top of the deflector around the shoulder bolt on top of the deck.

• Slide the notch in the side of the deflector around the front bolt in the side of the deck. Secure the front of the chute deflector to the bolt on the side of the deck with one wing nut. See Figure 3.

Chute Deflector

Shoulder Bolt

Mulching Plug

Figure 3

• Secure the ba ck o f the chute d efle ctor i n the sa me manner. See Figure 4.

Wing Nut

Chute Deflector

Figure 4

WARNING: Before using your lawn mower, again refer to the Safety Section in this manual. Always be careful.

Converting Mower To A Mulcher

• Remove eith er th e rear disc harge chute asse mbly or the side chute deflector from the mower as previously instructed.

• Attach the mulching plug by first placing it over the rear bolt in the side of the deck. Then slide the notch in the top of the mulching plug around the shoulder bolt on the top of the deck. Slide the notch in the side of the mulching plug around the front bolt in side of the deck and secure using two wing nuts. See Figure 5.

Wing Nuts

Figure 5

Replacing The Rear Discharge Chute

• Slide the ribs on the discharge chute assembly under the flange on rear panel as you insert the side of the discharge chute under the two tabs. See Figure 6.

Ribs

Flange

Shoulder Bolt

Figure 6

• The edge of the discharge chute assembly goes under the shoulder bolt on deck. Push down on the chute assembly and slide the bottom corner slots over the bolts on side of deck.

• Press down on the disc harge chute assemb ly an d secure with wing nuts. Make certain wing nuts are seated properly.

Rear Panel

Tabs

Rear Discharge Chute Assembly

SECTION 4: KNOW YOUR LAWN MOWER

Read this operator’s manual and safety rules before operating your lawn mower. Compare the illustrations in Figure 7 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 mower can result in foreign objects being thrown into the operator’s eyes and causing severe eye damage. Always wear safety glasses while operatin g the mow er , or w hile performing any adjustments or repairs on it.

Recoil Starter

Drive Clutch Cable

Model Series 820 Shown

Figure 7

Recoil Starter

The recoil starter is attached to the right lower handle. Stand behind the unit and pull the recoil starter to start the unit. See Figure 7.

Blade Control Handle

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 7.

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

Caster Lock

WARNING: When operating mower on hills, front wheels should be locked in the straight ahead position.

The casters can be locked in a straight ahead position or can be left to swivel freely.

• Lift and place the lock pins in the larger holes to lock the wheels for straight-ahead operation.

• Place pins in smaller hole s to allow cas ters to rota te freely for turning.

Blade Control Handle

Cutting Height Adjustment Lever

Caster Locks

Cutting Height Adjustment Lever

The cutting height adjustment lever is located above the left rear wheel. To adjust the cutting height, refer to the Adjustment Section in this manual. See Figure 7.

Drive Clutch Control (820 Thru 829)

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 7.

Engine Controls

See the separate engine manual for the location and function of the controls on the engine.

Stopping Engine

• Release blade control handle to stop the engine and the blade.

• Disconnect spark plug wire and ground it to the post on the engine.

SECTION 5: OPERATING YOUR LAWN MOWER

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 pu rposes 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.

Towards Better Mower Performance

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

For more details about proper lawn care, visit our website at www.mtdproducts.com

Gas and Oil Fill-Up

Service the engine with gasoline and oil as instructed in the separate engine manual packed with your mower. Read instructions carefully.

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.

Before Starting Your Mower (Models 820 Thru

829)

• 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 NEUTRA L ADJ UST MEN T TES T.

Neutral Adjustment Test

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?

• If you answered “yes” to all three questions, your mower passed the test and you can start your mower.

the engine, and read its instruction. Using your thumb, press the primer bulb slowly as many times as the decal advises.

7. 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.

8. In heavy growing season, it may be necessary to mow la wn twi ce we ekly . Clu mps of gras s clippings left behind on the lawn usually means that the grass is too high to mulch.

9. Before storing the lawn mower for the winter, use stabilizer-treated fuel and run the tank dry.

10. Thirty days before start of the new season, check the air filter, spark plug and blade on the lawn mower, and replace if needed.

• If you answered “no” to any of the three questions, you will have to adjust the drive clutch control in the ADJUSTMENT SECT ION.

Starting Engine

• Prime engine as instructed in the separate engine manual packed with your unit.

• Your lawn mower is 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).

• Pull rope with a rapid, continuous, full arm stroke. Keeping a firm grip on the starter handle, let the rope return to the starter slowly.

WARNING: Never operate your unit without either the side chute deflector or entire rear discharge chute and grass catcher assembly in place.

Using Y our Lawn Mow er

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

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

SECTION 6: MAKING ADJUSTMENTS

mower. Extensive vibration of the mower during operation is an indication of damage. The unit should be promptly inspected and repaired.

Mulching

For effective mulching, do not cut wet grass because it tends to stick to the underside of the deck, preventing proper mulching of grass 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.

WARNING: Do not at any time make any adjustments without first stopping engine and disconnecting spark plug wire.

Cutting Height Adjustment

The height adjustment handle for the rear wheels is located on the left side of the deck. The handle may be placed in one of the six cutting height positions. Push the handle to the left and then either forward to lower the cutting height or backward to raise the cutting height. See Figure 8.

Height Adjustment Handle

Figure 8

The front wheel cutting height is determine by the selection of one of the six positions in each caster assembly.

• To adjust, remove the wing nut from the axle bolt and slide the axle bolt and spring washer from the assembly and select a cutting height.

• With the spring washer on the axle bolt, insert the axle bolt in the desired square hole and through wheel assembly.

• Secure with wing nut previously removed

NOTE: All wheels mus t be placed in the sa me relative position. For roug h or uneven lawns , move the height adjustment lever to a higher position. This will help stop scalping.

Handle Height Adjustment

Your mower is shipped with the handle in the higher height position. To lower the height proceed as follows:

• Remove the start er ro pe fr om th e rope guid e.

• Remove the upper handle by removing the hand

knobs and carriage bolts. Lay the upper handle out of the way, being careful not to bend or kink the cables.

• 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 9.

• 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.

Notch

Lower Handle

Figure 9

Drive Clutch Control Adjustment (Models 820

Thru 829)

Use the adjustment wheel located on the underside of the clutc h cont rol h ousin g to t ight en the dri ve bel t, if mower does not self-propel with the drive clutch control engaged, or if drive belt is slipping (unit hesitates while

Adjustment Wheel

engine maintains the same speed). See Figure 10. In addition, the adjustment wheel may also be used to

determine the position in which the drive clutch control is engaged. If it is more comfortable to have the drive engaged with the lever further away from the handle, tighten the drive belt.

Make certain to retest the unit for neutral as instructed in the Operation Section. Move the adjustment wheel in the opposite direction to loosen the drive belt if necessary.

NOTE: For some pe ople the drive clutch control m ay

Engine Adjustments

See the separate engine manual packed with your unit for adjustments to the engine.

not be in a comfortable position. You can adjust the handle out by tightening the adjustment wheel.

SECTION 7: MAINTAINING YOUR LAWN MOWER

Bottom View

Upper Handle

Drive Clutch Control

Figure 10

Customer Responsibilities

MAINTENANCE

SCHEDULE

Lubricate wheels

Lubricate blade control

C U D

Lubricate Caster Assembly

O R

Blade care

Clean deck

Change oil Replace air filter

E N

Clean engine

G N E

Check spark plug

Check spark arr ester (if any)

SERVICE

DATES

General Recommendations

• Always observe safety rules when performing any maintenance.

• The warran ty on this lawn m ower does n ot co ver 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 wa rrant y.

• Some adjustm ents will have to be m ade 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.

accumulate, it will invit e rust and co rrosio n, and may prevent proper mulching, discharge, or bagging. The deck may be cleaned by tilting the mower and scraping clean with a suitable tool (make certain the spark plug wire is disconnected).

Lubrication

WARNING: Always stop engine and disconnect spark plug wire before cleaning, lubricating or doing any kind of service work on the lawn mower.

Blade Control: Lubricate the pivot points on the blade

control handle at least once a season with light oil. The blade control must operate freely in both directions. Refer to Figure 7.

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.

Caster Assembly: Grease fittings are provided for easy lubrication of the swivel pins located on the front caster assembly. Refer to Figure 7.

Engine: Follow the separate engine manual packed with you unit for lubrication instructions.

Maintenance

NOTE: When tipp ing 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 l ength of time. Oil can drain into the upper part of the engine causing a starting problem.

IMPORTANT:

pressure washer or garden hose to clean your unit. The use of wate r will resu lt in sh orte n life and r educe serviceability.

We do not recommend the use of a

Cutting Blade Removal, 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 the blade bell support which hold the blade and the blade adapter to the engine crankshaft. See Figure 11.

• Remove the blade and the adapter from the crankshaft.

WARNING: Periodically inspec t the blade adapter for cracks, esp ecially if you str ike a foreign object. Replace when necessary.

Blade

Adapter

Blade Bell

Support

Hex Bolt

Engine

Refer to the separate engine manual for all engine maintenan ce instr uctio ns.

• 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. If this debris is allowed to

Figure 11

When sharpening the blade, follow the original angle of grind as a guid e. It is ex tre mely i mport ant t hat 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 until it balances evenly. It is recommended that the blade always be removed from the adapter when testing for balance. Before reinstalling the blade and the blade adapter to the unit, lubricate the engine crankshaft and the inner surface of the blade adapter with light oil.

• Be sure to install the blade with the side of the blade marked “Bottom” (or with part numb er) facing the ground when the mower is in the operating position.

• Slide the blade adapter onto the engine crankshaft.

• Place the blade on the adapter. Be certain the

blade is aligned and seated on the blade adapter flanges.

• Place blade bell support on blade. Make sure the notches on the blade bell support are aligned with small holes in the blade.

• Replace hex bolt and tighten hex bolt 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.

Drive Belt Removal and Replacement (Models 820 Thru

829)

• Disconnect the spark plug wire and ground it against the engine.

• Drain the fuel tank or place a piece of plastic beneath the cap to prevent gasoline leakage.

• Remove the grass b ag, r ear di scharg e chu te assembly, and catcher panel.

• Remove the tr ansmissi on be lt cove r by rem oving three bol ts. Se e Fi gure 1 2.

Transmission Belt Cover

Remove Bolt

Remove Bolts

Figure 12

• Tip the mower on its side and block securely.

• Remove the belt guard under the deck by removing

two self-tapping screws. See Figure 13.

Remove Bolt

• Loosen the bolt which secures the idler pulley so you can remove the belt from between the idler pulley and the belt guard on the idler pulley bracket. See Figure 14.

Belt Guard

Idler Pulley

Pulley

Figure 14

• Remove the belt from the transmission pulley by pulling it underneath the pulley.

• Remove the belt from around the blade.

NOTE: Before reassembling, you should remove the idler pulley from the idler bracket to clean and grease the needle bearing inside the pulley using an allpurpose grease. When reassembling, cupped side of washer must be against the idler bracket.

• Reassemble new belt following the previous instructions in re verse orde r.

• When reassembling the transmission belt cover, be certain the belt guard on the transmission cover is approximately 1/8” away from the belt.

• Make certain to tighten all nuts and bolts securely.

Storing your Lawn Mower

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

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

IMPORT ANT :

pressure washer or garden hose to clean your unit.

We do not recommend the use of a

Remove Center Bolt

Figure 13

Inside Belt Guard

• 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 equi pment. Using a light oil or silicone, coat the equipment, e specially cab les and all moving parts.

SECTION 8: TROUBLESHOOTING

Problem Cause Remedy

Engine fails to start 1. Blade control handle disengaged.

2. Spark plug wire disconnected.

3. Fuel tank empty or stale fuel.

4. Blocked fuel line.

5. Faulty spark plug.

6. Engine flooded

Engine runs er ratic 1. Spark plug wire loos e.

2. Blocked fuel line or stale fuel.

3. Vent in gas plugged.

4. Water or dirt in fuel system.

5. Dirty air cleaner.

6. Carburetor out of adjustment.

Engine overheats 1. Engine oil level low.

2. Air flow restrict ed.

3. Carburetor not adjusted properly.

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 1. Wheels not positioned correctly.

Wheels will not propel (Models 820 thru 829)

NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.

1. Spark plug gap too close. 1. Adjust gap to .030”.

wide.

2. Carburetor improperly adjusted.

3. Dirty air cleaner.

2. Bent cutting blade.

2. Wet grass.

3. Excessively high grass.

4. Dull blade.

2. Dull blade.

1. Belt not installed properly.

2. Debris clogging mechanism.

1. Engage blade control handle.

2. Connect wire to spark plug.

3. Fill tank with clean, fresh gasoline.

4. Clean fuel line.

5. Clean, adjust gap, or replace.

6. Crank engine with throttle in FAST position.

1. Connect and tighten spark plug wire.

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

3. Clear vent.

4. Drain fuel tank. Refill with fresh fuel.

5. Clean air cleaner.

6. Adjust carburetor.

1. Fill crankcase with proper oil.

2. Remove blower housing and clean.

3. Adjust carburetor.

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. Set throttle between 3/4 and full throttle.

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

3. Mow once at a high cutting height, then mow 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.

1. Check belt for proper pulley installation.

2. Clean out debris.

Model Series 810 Thru 829

23109

110

107

108

109

110

109

102

Model Series 810 Thru 829

REF.

NO. PART NO. DESCRIPTION

1. 720-0294 Foam Handle

2. 747-0824 Control Lev er

3. 731-1023 Rear Discharge Chute Ass’y

4. 710-0605 Oval C-Sunk Screw (If Equipped)

5. 646-0875 Throttle Body (If Equipped)

6. 736-0501 Spring Washer .66” (If Equipped)

7. 712-0324 Hex L-Nut 1/4-20 (If Equipped)

8. 746-0876 Throttle Lever (If Equipped)

9. 710-1205 Rope Guide

10. 720-0279 Wi ng Nut 1/4-2 0

11. 731-1426 Hub Cap Spoke

12. 710-0896 Truss Machine Screw 1/4-14 x .625

13. 736-0258 Flat Washer .383” ID x 1” OD

14. 749-0439C Upper Handle † 749-0438B Upper handle ††

15. 16129A Panel Support Bracket

16. 16862 Rear Catcher Pane l Ass’y

17. 17095A Rear Discharge Door

18. 731-1886 Hub Cap Spoke w/Hole

19. 732-0483A Torsion Spring

20. 747-0514 Pivot Pin

21. 710-0134 Carriage Bolt 1/4-20 x .62”

22. 710-0924 Truss Machine Screw 1/4-20 x .75”

23. 747-0924 Lock Pin

24. 738-0704 Shoulder Bolt .312 x .18

25. 710-0751 Hex Bolt 1/4-20 x .62”

26. 712-0287 Hex Nut 1/4-20

27. 736-0270 Bell Washer 1/4” †

28. 736-0329 Lock Washer 1/4”

29. 747-0705 Front Gr as s Catc her Frame

30. 722-0139 Foam Strip

31. 731-1059 SP Control Cover †

32. 726-0214 Push Cap

33. 712-0397 Wi ng Nut w/ Washer

34. 746-06 74 Throttle Control Wire 61”

35. 749-0907A Lower Handle

36. 682-9021A Caster Ass’y LH 682-9020A Caster Ass’y RH

37. 710-1237 Hex Tap Screw #10-32 x .62”

38. 664-0082 Grass Bag

39. 712-0397 Wi ng Nut

40. 682-9026 Caster Bracket Ass’y LH 682-9024 Caster Bracket Ass’y RH

41. 736-0204 Flat Washer .344” ID x .62”

42. 17055B Chain - Axle Ass’y †

43. 710-0352 Hex Tap Screw 1/4” x .38”

44. 736-0232 Wave Washer

45. 710-0776A Hex Tap Screw 1/4 x .62”

46. 711-1146 Caster Axle

47. 712-0296 Hex Lock Nut 3/8-24 †

48. 713-0353 #48 Chain .500” Pitch x 30 Links †

49. 737-3000 Lube Fitting

50. 736-0931 Fl at Washer

REF.

NO. PART NO. DESCRIPTION

51. 731-1488 Rear Flap †

52. 726-0240 Cable Tie

53. 751B213146 Cable Clamp

54. 710-1025 Hex Screw #12 x 1.25”

55. 753-0609 Blade Adapter Kit

56. 742-0641 21” Standard Blade 742-0741 21” Mulching Blade

57. 731-0564 Mulching Plug

58. 736-0524A Blade Bell Support

59. 710-1044 Hex Bolt 3/8-24 x 1.5”

60. 741-0685 Fl ange Bearing

61. 748-0190 Spacer .513” ID x .69” †

62. 736-0366 Flat Washer 5/8 ID x 1.0 OD

64. 16136C RH Hand le Whe el B ra cket Ass’y

65. 682-0532 LH Handle Wheel Bracket Ass’y

66. 710-0260 Carriage Bolt 5/16-18 x .62”

67. 710-0603 Hex Tap Screw 5/16-18

68. 710-0654A Hex Tap Screw 3/8-16

69. 712-0267 Hex Nut 5/16-18

70. 720-0223 Grip

71. 732-0606 Height Adjuster Lever

72. 746-0883 Throttle Housing w/o Lever

73. 736-0242 Bell Washer 5/16”

74. 750-0736 Spacer

75. 750-0624 Shoulder Spacer .50”

76. 719-0279 Rope Guide

77. 726-0 233 Bo lt Retainer

78. 734-1857 Front Wheel Ass’y Comp

79. 741-0486B Bearing 1/2” ID

80. 738-0137 Shoulder Screw

81. 748-0188B Pawl

82. 734-2005 Rear Wheel Ass’y Comp † 734-2004 Rear Wheel Ass’y Comp ††

83. 726-0175 Clamp

84. 736-0514 Fl at Washer †

85. 736-0513 Spring Washer .89” ID †

86. 748-0358 Crankshaft Spacer †

87. 731-0880 Panel Clip

88. 712-0414 Weld L-Nut 1/4-20

89. 710-1270 Screw 1/4-20 x 20

90. 714-0104 Cotter Pin

91. 720-0314 Hand Knob

92. 756-0962 Pulley Half-Upper †

93. 756-0961 Pulley Half-Lower †

94. 710-0578 Machine Screw 1/4-20

95. 746-0710A Drive Cable †

96. 754-0343 V-Belt †

97. 712-0271 Sems Nut 1/4-20

98. 731-0801 Bag Handle

100. 714-0104 Hairpin Clip

102. 782-0098 21” Deck † 782-0112 21” Deck ††

106. 711-0313 Sleeve

REF.

NO. PART NO. DESCRIPTION

107. 736-0264 Flat Washer .330 ID x .630 OD

108. 732-0306 Compression Spring

109. 710-0260 Carriage Bolt 5/16-18 x .62

110. 712-3004A Flange Lock Nut 5/16-18

114. 731-1057 SP Control Cover †

115. 731-1058 SP Control Cover †

116. 731-0620 Control Lever †

117. 720-0190 Door Grip

118. 710-1667A C Sunk Tap Screw #10-16 x .625 †

119. 16855 Pawl Plate

121. 710-1174 Curved Carriage Bolt 5/16-18 x 2”

122. 711-0805 Shoulder Pin 3/8-24 x 1.43”

123. 736-0169 Lock Washer 3/8” ID

129. 746-0922 Control Cable

130. 748-0318 Ratchet Wheel 1.62” OD †

131. 714-0115 Cotter Pin †

132. 712-0711 Hex Jam Nut 3/8-24

† Models 820 Thur 829

†† Models 810 Thru 819

REF.

NO. PART NO. DESCRIPTION

133. 731-0884 Side Chute Deflector Ass’y

134. 741-0522 Hex Flange Bearing †

135. 811-00185 Throttle Box Comp (If Equipped)

136. 10622B Nylon Spring †

138. 17053A Chain Cover †

140. 710-0599 Hex Tap Screw 1/4-20 x .50” †

144. 736-0300 Flat Washer †

147. 738-0719A Rear Shaft Ass’y †

148. 741-0324 Hex Flange Bearing .506” ID †

149. 736-0160 Flat Washer .531” x .930” †

152. 710-0751 Hex Bolt 1/4-20 x .62

153. 618-0055 Transmission Comp †

154. 16500A Hex Bearing Cup

155. 710-0429 Hex Tap Screw #10 x .38

161. 749-0764A Rear Catcher Frame

163. 710-0352 Hex Tap Screw 1/4 x .38”

164. 782-7555 Mulching Baffle

Model Series 820 Thru 829

REF.

NO. PART NO. DESCRIPTION

1. 710-1062 Hex Bolt w/Patch 1/4-20 x 1.25”

2. 726-0329 L-Washer 1/4” ID

3. 717-0418A Upper Housing Half

4. 713-0400 #48 Sprocket 7 Tooth x 1/2 Pitch

5. 736-0336 Flat Washer 5/8” ID x.030 OD

6. 741-0 413 Hex Flange Bearing .631” ID

7. 16500A Hex Bearing Cup

8. 736-0314 Thrust Washer .382” ID x .70” OD

9. 741-0479 Thrust Bearing .375” ID x .812” OD

10. 782-7569 Belt Keeper

11. 717-1216 11 Tooth Helical Gear

12. 748-0208A Flange Bearing

13. 721-0212 Oil Seal

15. 756-0330A Pulley 5.06” ID

16. 736-0270 Bell Washer .265” ID x .75” OD

17. 712-0351 Hex Nut 1/4-28 LH Thread

18. 738-0440 Shoulder Spacer .375”

19. 736-0344 Flat Washer .390” ID x 1.0” OD

20. 738-0826 Shoulder Bolt .375” x .40”

21. 756-0558 Idler Pulley 1.50”

22. 741-0556 Needle Bearing .375” x .31”

23. 736-0270 Bell Washer .265” ID x .75”

REF.

NO. PART NO. DESCRIPTION

24. 782-7570 Idler Bracket Ass’y

25. 712-0138 Hex Lock Nut 1/4-28

26. 732-0357A Extension Spring 1.12”

27. 717-0419B Lower Housing Half

28. 741-0415 Fl ange Bearing .56”

29. 717-0422A 33 Tooth Helical Gear

30. 741-0414 Fl ange Bearing .629”

31. 721-0213 Oil Seal .625”

32. 738-0607B Gear Sprocket Shaft

33. 736-0722 Lock Washer #10

34. 710-0436 Hex Tap Screw #10 x .62”

35. 736-0410 Hex Washer .26” x .88”

36. 17718 Transmission be lt Guard

39. 710-0599 Hex Tap Screw 1/4 x .50”

40. 710-0896 Hex Tap Screw 1/4 x .62”

41. 712-0287 Hex Nut 1/4-20

42. 736-0270 Bell Washer .265” ID x .75”

43. 736-0329 Lock Washer 1/4” ID

44. 746-0710A SP Cable - 48”

45. 747-0549 SP Be lt Guard 618-0055 Transmission Complete

MANUFACTURER’S LIMITED WARRANTY FOR:

The limited warranty set for th below is given by MTD PRODUCTS INC (“MTD”) with respect to new merchandise purchased and used in the United States, its possessions and territories.

MTD warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in 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, commercial use, neglect, accident, improper maintenance, alteration, vandalism, theft, fire, water or damage because of other peril or natural disaster. Damage resulting from the installation or use of any 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 separate 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 90day limited replacement warranty.

HOW TO OBTAIN SERVICE: Warrant y ser vice i s availabl e, 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 Depar tment of MTD PRODUCTS INC by calling 1-800-800-7310 or writing to P.O. 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 sp li tter p um ps, valves and cylinders have a se par ate

one year warranty.

c. Routine maintenance items such as lubricants, filters,

blade sharpening and tune-ups, or adjustments such as brake adjustments, clutch adjustments or deck adjustments; and normal de terioration 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 Warranty, 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 services, for transportation or for related expenses, or for rental expenses to temporarily r eplace a warranted product. (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 misu se or ina bility to use the produc t.

This limited warranty shall not extend to anyone other than the original purchaser, original lessee or the person f or whom it was purchased as a gift.

How State Law Relates to this Warranty: This limited warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Yard Machines 810, 829 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual