Lawn Boy 20 Inch 6.5 Manual User Manual

Form No. 3400-458 Rev B

21in Mulching/Rear Bagging Lawn

Mower

Model No. 10739—Serial No. 316000001 and Up

Model No. 17739—Serial No. 316000001 and Up

Operator's Manual

Introduction

Figure 2

This rotary-blade, walk-behind lawn mower is intended

to be used by residential homeowners. It is designed

primarily for cutting grass on well-maintained lawns

on residential properties. It is not designed for cutting

brush or for agricultural uses.

1. Safety-alert symbol

This manual uses 2 words to highlight information.

Important calls attention to special mechanical information

and Note emphasizes general information worthy of special

attention.

Read this information carefully to learn how to operate and

maintain your product properly and to avoid injury and

product damage. You are responsible for operating the

product properly and safely.

Receive a complimentary side-discharge chute by completing

the Discharge Chute Order Form when you register your

product at www.lawnboy.com/register. Please allow 1 to 2

weeks for delivery (subject to availability).

You may contact Lawn-Boy directly at www.Lawn-Boy.com

for product and accessory information, help ﬁnding a dealer,

or to register your product.

Whenever you need service, genuine Lawn-Boy parts, or

additional information, contact an Authorized Service Dealer

or Lawn-Boy Customer Service and have the model and

serial numbers of your product ready. Figure 1 identiﬁes the

location of the model and serial numbers on the product.

Write the numbers in the space provided.

WARNING

CALIFORNIA

Proposition 65 Warning

This product contains a chemical or chemicals

known to the State of California to cause cancer,

birth defects, or other reproductive harm.

The engine exhaust from this product

contains chemicals known to the State of

California to cause cancer, birth defects,

or other reproductive harm.

It is a violation of California Public Resource Code

Section 4442 or 4443 to use or operate the engine on any

forest-covered, brush-covered, or grass-covered land unless

the engine is equipped with a spark arrester, as deﬁned in

Section 4442, maintained in effective working order or the

engine is constructed, equipped, and maintained for the

prevention of ﬁre.

Figure 1

1. Model and serial number plate

Model No.

Serial No.

This spark ignition system complies with Canadian ICES-002.

The enclosed Engine Owner's Manual is supplied for

information regarding the US Environmental Protection

Agency (EPA) and the California Emission Control

Regulation of emission systems, maintenance, and

warranty. Replacements may be ordered through the

engine manufacturer.

This manual identiﬁes potential hazards and has safety

messages identiﬁed by the safety-alert symbol (Figure 2),

which signals a hazard that may cause serious injury or death

if you do not follow the recommended precautions.

Net Torque

8111 Lyndale Avenue South

Bloomington, MN 55420

Original Instructions (EN)

Printed in the USA

*3400-458*

Setup

Important: Remove and discard the protective plastic

sheet that covers the engine.

Unfolding the Handle

No Parts Required

Procedure

94-8072

WARNING

Folding or unfolding the handle improperly can

damage the cables, causing an unsafe operating

condition.

117–2718

• Do not damage the cables when folding or

unfolding the handle.

• If a cable is damaged, contact an Authorized

Service Dealer.

1. Remove the handle knobs from the machine housing

(Figure 3).

117-4143

1. Warning—read the Operator's Manual.

2. Thrown object hazard—keep bystanders a safe distance

from the machine.

3. Cutting/dismemberment hazard of hand or foot, mower

blade—disconnect the spark-plug wire and read the

instructions before servicing or performing maintenance.

4. Cutting/dismemberment hazard of hand or foot, mower

blade—stay away from moving parts and keep all guards

and shields in place.

5. Cutting/dismemberment hazard of hand or foot, mower

blade—do not mow up and down slopes, only mow across;

stop the mower and engine, pick up debris before operating;

look behind and down when reversing.

Figure 3

1. Handle knob (2)

Important: Route the cables to the outside of the

handle as you unfold the handle (Figure 3).

2. Move the handle to the operating position (Figure 3).

3. Install the handle knobs and tighten them ﬁrmly by

hand.

Installing the Recoil-Starter

Rope in the Rope Guide

No Parts Required

Procedure

Figure 5

Important: To start the engine safely and easily

whenever you use the machine, install the recoil-starter

rope in the rope guide.

3. Wipe off the dipstick with a clean cloth.

4. Insert the dipstick into the oil-ﬁll tube, but do not

Hold the blade-control bar to the upper handle and pull the

recoil-starter rope through the rope guide on the handle

(Figure 4).

screw it in.

5. Remove the dipstick and read the oil level on the

dipstick (Figure 5).

•

If the oil level is low, add a small amount of oil

slowly to the oil-ﬁll tube, and then repeat steps

3 through 5 until the oil level on the dipstick is

correct.

If the oil level is high, drain the excess oil until the

oil level on the dipstick is correct. To drain the

excess oil, refer to Changing the Engine Oil (page

12).

Figure 4

Important: If the oil level in the crankcase is

too low or too high and you run the engine,

you may damage the engine.

1. Recoil-starter rope

2. Rope guide

6. Install the dipstick securely.

Important: Check the engine-oil level before each

use and add oil as needed. Refer to Checking the

Engine-Oil Level (page 6).

Filling the Engine with Oil

No Parts Required

Procedure

Important: Your machine does not come with oil in

the engine. Before starting the engine, ﬁll the engine

with oil.

Assembling the Grass Bag

No Parts Required

1. Move the machine to a level surface.

Procedure

1. Slip the grass bag over the frame as shown in Figure 6.

2. Remove the dipstick (Figure 5) and pour about 3/4 of

the crankcase capacity of oil into the oil-ﬁll tube.

Note: Max. ﬁll: 0.53 L (18 oz), type: 10W-30 or SAE

30 detergent oil with an API service classiﬁcation of

SJ or higher.

Product Overview

Figure 6

3. Grass bag

1. Handle

2. Frame

Note: Do not slip the bag over the handle (Figure 6).

2. Hook the bottom channel of the bag onto the bottom

of the frame (Figure 7).

Figure 8

1. Self-propel-drive bar

2. Recoil-start handle

6. Blade-control bar

7. Self-propel-drive

adjustment knob

3. Grass bag

8. Fuel-tank cap

9. Air ﬁlter

4. Cutting-height lever (2)

5. Oil ﬁll/Dipstick

10. Spark plug

Figure 7

3. Hook the top and side channels of the bag onto the top

and sides of the frame, respectively (Figure 7).

Attachments/Accessories

Operation

A selection of Lawn-Boy approved attachments and

accessories is available for use with the machine to enhance

and expand its capabilities. Contact your Authorized Service

Dealer or Distributor or go to www.Lawn-Boy.com for a list

of all approved attachments and accessories.

Before Operation

Before Operation Safety

Filling the Fuel Tank

General Safety

•

For best results, use only clean, fresh (less than 30 days

old), unleaded gasoline with an octane rating of 87 or

higher ((R+M)/2 rating method).

•

Become familiar with the safe operation of the equipment,

operator controls, and safety signs.

Check that all guards and safety devices, such as deﬂectors

and/or grass catcher, are in place and working properly.

•

Oxygenated fuel with up to 10% ethanol or 15% MTBE

by volume is acceptable.

Always inspect the machine to ensure that the blades,

blade bolts, and cutting assembly are not worn or

damaged.

Ethanol: Gasoline with up to 10% ethanol (gasohol)

or 15% MTBE (methyl tertiary butyl ether) by volume

is acceptable. Ethanol and MTBE are not the same.

Gasoline with 15% ethanol (E15) by volume is not

approved for use. Never use gasoline that contains

more than 10% ethanol by volume, such as E15

(contains 15% ethanol), E20 (contains 20% ethanol), or

E85 (contains up to 85% ethanol). Using unapproved

gasoline may cause performance problems and/or engine

damage which may not be covered under warranty.

•

Inspect the area where you will use the machine and

remove all objects that the machine could throw.

Adjusting the cutting height may bring you into contact

with the moving blade, causing serious injury.

– Shut off the engine and wait for all moving parts to

stop.

– Do not put your ﬁngers under the housing when

adjusting the cutting height.

•

Do not use gasoline containing methanol.

Do not store fuel either in the fuel tank or in fuel

containers over the winter unless a fuel stabilizer is used.

Fuel Safety

DANGER

Fuel is extremely ﬂammable and highly explosive.

A ﬁre or explosion from fuel can burn you and

others and can damage property.

•

Do not add oil to gasoline.

Important: To reduce starting problems, add fuel

stabilizer to the fuel all season, mixing it with gasoline

less than 30 days old.

• To prevent a static charge from igniting the fuel,

place the container and/or machine directly on

the ground before ﬁlling, not in a vehicle or on

an object.

• Fill the fuel tank outdoors, in an open area, when

the engine is cold. Wipe up any fuel that spills.

• Do not handle fuel when smoking or around an

open ﬂame or sparks.

• Store fuel in an approved container and keep it

out of the reach of children.

Figure 9

WARNING

Fuel is harmful or fatal if swallowed. Long-term

exposure to vapors can cause serious injury and

illness.

Checking the Engine-Oil Level

Service Interval: Before each use or daily

• Avoid prolonged breathing of vapors.

• Keep your hands and face away from the nozzle

and the fuel-tank opening.

Max. ﬁll: 0.53 L (18 oz), type: 10W-30 or SAE 30 detergent

oil with an API service classiﬁcation of SJ or higher.

• Keep fuel away from your eyes and skin.

1. Move the machine to a level surface.

2. Remove the dipstick (Figure 10).

Figure 11

2. Lower the machine

1. Raise the machine

Note: The cutting height settings are 32 mm (1-1/4 inches);

44 mm (1-3/4 inches); 57 mm (2-1/4 inches); 70 mm (2-3/4

inches); 83 mm (3-1/4 inches); and 95 mm (3-3/4 inches).

Figure 10

3. Wipe off the dipstick end with a clean cloth.

During Operation

4. Insert the dipstick into the oil-ﬁll tube, but do not

screw it in.

During Operating Safety

5. Remove the dipstick and read the oil level; refer to

Figure 10.

General Safety

•

Wear appropriate clothing, including eye protection;

slip-resistant, substantial footwear; and hearing

protection. Tie back long hair, secure loose clothing, and

do not wear jewelry.

Do not operate the machine while ill, tired, or under the

inﬂuence of alcohol or drugs.

The blade is sharp; contacting the blade can result in

serious personal injury. Shut off the engine and wait for

all moving parts to stop before leaving the operating

position.

When you release the blade-control bar, the engine should

shut off and the blade should stop within 3 seconds. If

not, stop using your machine immediately and contact an

Authorized Service Dealer.

Operate the machine only in good visibility and

appropriate weather conditions. Do not operate the

machine when there is the risk of lighting.

Wet grass or leaves can cause serious injury if you slip and

contact the blade. Mow only in dry conditions.

Use extreme care when approaching blind corners,

shrubs, trees, or other objects that may block your view.

Watch for holes, ruts, bumps, rocks, or other hidden

objects. Uneven terrain could cause a slip-and-fall

accident.

•

If the oil level is low, add a small amount of oil

slowly to the oil-ﬁll tube, and then repeat steps

3 through 5 until the oil level on the dipstick is

correct.

•

If the oil level is high, drain the excess oil until the

oil level on the dipstick is correct. To drain the

excess oil, refer to Changing the Engine Oil (page

12).

Important: If the oil level in the crankcase is

too low or too high and you run the engine,

you may damage the engine.

•

6. Install the dipstick securely.

Adjusting the Cutting Height

Adjust the cutting height as desired. Set the front wheels and

•

the rear wheels to the same height.

Note: To raise or lower the machine, move the cutting-height

levers as shown in Figure 11.

•

Stop the machine and inspect the blades after striking an

object or if there is an abnormal vibration in the machine.

Make all necessary repairs before resuming operation.

•

Before leaving the operating position, shut off the engine,

remove the key, and wait for all moving parts to stop.

If the engine has been running the mufﬂer will be hot and

can severely burn you. Keep away from the hot mufﬂer.

•

Check the grass catcher components and the discharge

guard frequently and replace them with the manufacturer’s

recommended parts when necessary.

Use accessories and attachments approved by the

Lawn-Boy® Inc. only.

Slope Safety

•

Mow across the face of slopes; never up and down. Use

extreme caution when changing direction on slopes.

Do not mow on excessively steep slopes. Poor footing

could cause a slip-and-fall accident.

Figure 14

1. Self-propel drive bar

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

You could lose your footing or balance.

To disengage the self-propel drive, release the self-propel

drive bar.

Starting the Engine

1. Hold the blade-control bar (Figure 12) against the

handle.

Note: The maximum self-propel ground speed is ﬁxed. To

reduce the ground speed, increase the space between the

self-propel drive bar and the handle.

Shutting Off the Engine

Service Interval: Before each use or daily

To shut off the engine, release the blade-control bar (Figure

15).

Figure 12

Note: Remove the ignition key when you leave the machine

(electric-start model only).

1. Blade-control bar

Important: When you release the blade-control bar,

both the engine and blade should stop within 3 seconds.

If they do not stop properly, stop using your machine

immediately and contact an Authorized Service Dealer.

2. Pull the recoil-start handle (Figure 13).

Figure 13

Note: If the machine does not start after several

attempts, contact an Authorized Service Dealer.

Figure 15

Using the Self-propel Drive

To operate the self-propel drive, squeeze the self-propel drive

Mulching the Clippings

Your machine comes from the factory ready to mulch the

bar (Figure 14) toward the handle and hold it.

grass and leaf clippings back into the lawn.

If the grass bag is on the machine, remove it before mulching

the clippings. Refer to Removing the Grass Bag (page 9).

2. Lift the grass-bag handle out from the notches on the

handle brackets and remove the bag from the machine.

Bagging the Clippings

Use the grass bag when you want to collect grass and leaf

clippings from the lawn.

3. Close the rear deﬂector.

WARNING

Operating Tips

A worn grass bag could allow small stones and

other similar debris to be thrown toward you or

bystanders, resulting in serious personal injury or

death.

General Mowing Tips

•

Clear the area of sticks, stones, wire, branches, and other

debris that the blade could hit.

Check the grass bag frequently. If it is damaged,

install a new Lawn-Boy replacement bag.

Avoid striking solid objects with the blade. Never

deliberately mow over any object.

If the machine strikes an object or starts to vibrate,

immediately shut off the engine, disconnect the wire from

the spark plug, and examine the machine for damage.

WARNING

The blade is sharp; contacting the blade can result

in serious personal injury.

•

For best performance, install a new blade before the

cutting season begins.

Replace the blade when necessary with a Lawn-Boy

replacement blade.

Shut off the engine and wait for all moving parts to

stop before leaving the operating position.

Cutting Grass

Installing the Grass Bag

•

Cut only about a third of the grass blade at a time. Do not

cut below the 44 mm (1-3/4 inch) setting unless the grass

is sparse or it is late fall when grass growth begins to slow

down. Refer to Adjusting the Cutting Height (page 7).

1. Lift up the rear deﬂector (Figure 16).

•

When cutting grass over 15 cm (6 inches) tall, mow at the

highest cutting height setting and walk slower; then mow

again at a lower setting for the best lawn appearance. If

the grass is too long, the machine may plug and cause

the engine to stall.

•

Mow only dry grass or leaves. Wet grass and leaves tend

to clump on the yard and can cause the machine to plug

or the engine to stall.

•

Alternate the mowing direction. This helps disperse the

clippings over the lawn for even fertilization.

If the ﬁnished lawn appearance is unsatisfactory, try 1

or more of the following:

– Replace the blade or have it sharpened.

– Walk at a slower pace while mowing.

– Raise the cutting height on your machine.

– Cut the grass more frequently.

Figure 16

1. Rear deﬂector

2. Rod end (2)

3. Notch in the handle

bracket (2)

– Overlap cutting swaths instead of cutting a full swath

with each pass.

4. Grass bag

2. Insert the rod ends of the grass bag into the notches

in the handle brackets (Figure 16).

Cutting Leaves

•

After cutting the lawn, ensure that half of the lawn shows

through the cut leaf cover. You may need to make more

than a single pass over the leaves.

3. Allow the rear deﬂector to rest on the bag.

Removing the Grass Bag

1. Lift up the rear deﬂector (Figure 16).

•

Slow down your mowing speed if the machine does not

cut the leaves ﬁnely enough.

2. When no more clippings come out, stop the water and

move the machine to a dry area.

After Operation

3. Run the engine for a few minutes to dry the underside

of the machine to prevent it from rusting.

After Operating Safety

General Safety

Folding the Handle

1. Loosen the handle knobs until you can move the

handle freely (Figure 18).

•

Clean grass and debris from the machine to help prevent

ﬁres. Clean up oil or fuel spills.

Allow the engine to cool before storing the machine in

any enclosure.

Never store the machine or fuel container where there is

an open ﬂame, spark, or pilot light, such as on a water

heater or on other appliances.

Hauling Safety

•

Use care when loading or unloading the machine into a

trailer or truck.

•

Use full-width ramps for loading the machine into a

trailer or truck. Do not exceed a 15° angle between the

ramp and the trailer or truck.

•

Tie the machine down securely using straps, chains, cable,

or ropes. Both front and rear straps should be directed

down and outward from the machine.

Cleaning the under the

Machine

Figure 18

Service Interval: After each use

1. Handle knob (2)

WARNING

The machine may dislodge material from under the

machine.

2. Move the handle forward as shown in Figure 18.

• Wear eye protection.

• Stay in the operating position (behind the

handle).

• Do not allow bystanders in the area.

1. With the engine running on a ﬂat paved surface, spray a

stream of water in front of the right rear wheel (Figure

17).

The water will splash into the path of the blade,

cleaning out the clippings.

Figure 17

Maintenance

Note: Determine the left and right sides of the machine from the normal operating position.

Recommended Maintenance Schedule(s)

Maintenance Service

Maintenance Procedure

Interval

• Check the engine oil level.

• Ensure that the engine shuts off within 3 seconds after releasing the blade-control

bar.

Before each use or daily

• Clean grass clippings and dirt from under the machine.

After each use

Every 25 hours

• Check the air cleaner for dirty, loose, or damaged parts, and clean or replace them

if necessary.

• Replace the air cleaner element (more frequently when operating the machine

in dusty or dirty operating conditions).

• Clean the cooling system (refer to your engine owner's manual).

• Replace the spark plug.

Every 100 hours

• Empty the fuel tank before repairs as directed and before annual storage.

Before storage

Yearly

• Replace the blade or have it sharpened (more frequently if the edge dulls quickly).

• Refer to your engine owner's manual for any additional yearly maintenance

procedures.

Important: Refer to your engine owner’s manual for additional maintenance procedures.

Maintenance Safety

•

Disconnect the spark-plug wire from the spark plug

before performing any maintenance procedure.

Wear gloves and eye protection when servicing the

machine.

The blade is sharp; contacting the blade can result in

serious personal injury. Wear gloves when servicing the

blade.

•

Never tamper with safety devices. Check their proper

operation regularly.

Tipping the machine may cause the fuel to leak. Fuel is

ﬂammable and explosive, and can cause personal injury.

Run the engine dry to remove the fuel with a hand pump;

never siphon the fuel.

Figure 19

1. Spark-plug wire

3. After performing the maintenance procedure(s),

connect the spark-plug wire to the spark plug.

Preparing for Maintenance

1. Shut off the engine and wait for all moving parts to

stop.

Important: Before tipping the machine to change

the oil or replace the blade, allow the fuel tank to

run dry through normal usage. If you must tip

the machine prior to running out of fuel, use a

hand fuel pump to remove the fuel. Always tip the

machine onto its side with the dipstick down.

2. Disconnect the spark-plug wire from the spark plug

(Figure 19) before performing any maintenance

procedure.

Servicing the Air Cleaner

Service Interval: Every 25 hours/Yearly (whichever comes

ﬁrst)—Check the air cleaner for dirty,

loose, or damaged parts, and clean or

replace them if necessary.

Changing the Engine Oil

Changing the engine oil is not required, but if you desire

to change the oil, use the following procedure.

Run the engine a few minutes before changing the oil to warm

it. Warm oil ﬂows better and carries more contaminants.

Every 100 hours/Yearly (whichever comes

ﬁrst)—Replace the air cleaner element (more

frequently when operating the machine in dusty or

dirty operating conditions).

1. Perform the pre-maintenance procedures; refer to

Preparing for Maintenance (page 11).

2. Tip the machine onto its side, with the dipstick down,

to drain the used oil out through the oil-ﬁll tube (Figure

21).

1. Perform the pre-maintenance procedures; refer to

Preparing for Maintenance (page 11).

2. Press down on the latch tabs on top of the air-cleaner

cover (Figure 20).

Figure 21

3. Remove the dipstick.

4. After draining the used oil, return the machine to the

normal operating position.

5. Pour about 3/4 of the crankcase capacity of oil into

the oil-ﬁll tube.

Note: Max. ﬁll: 0.53 L (18 oz), type: 10W-30 or SAE

30 detergent oil with an API service classiﬁcation of

SJ or higher.

6. Wipe off the dipstick end with a clean cloth.

7. Insert the dipstick into the oil-ﬁll tube, but do not

screw it in.

Figure 20

8. Remove the dipstick and read the oil level on the

dipstick (Figure 22).

1. Latch tabs

2. Air-cleaner element

3. Open the cover.

4. Replace the air-cleaner element.

5. Install the cover.

Figure 22

•

If the oil level is low, add a small amount of oil

slowly to the oil-ﬁll tube, and then repeat steps

6 through 8 until the oil level on the dipstick is

correct.

Important: Position the curved ends of the blade

to point toward the machine housing.

6. Use a torque wrench to tighten the blade bolt to 82

N-m (60 ft-lb).

If the oil level is high, drain the excess oil until the

oil level on the dipstick is correct.

Important: A bolt torqued to 82 N-m (60 ft-lb) is

very tight. While holding the blade with a block

of wood, put your weight behind the ratchet or

wrench and tighten the bolt securely. This bolt is

very difﬁcult to overtighten.

Important: If the oil level in the crankcase is

too low or too high and you run the engine,

you may damage the engine.

9. Install the dipstick securely.

10. Recycle the used oil properly.

Adjusting the Self-Propel Drive

Whenever you install a new self-propel cable or if the

self-propel drive is out of adjustment, adjust the self-propel

drive.

Replacing the Blade

Service Interval: Yearly

1. Turn the adjustment knob counterclockwise to loosen

the cable adjustment (Figure 24).

Important: You will need a torque wrench to install the

blade properly. If you do not have a torque wrench or

are uncomfortable performing this procedure, contact

an Authorized Service Dealer.

Examine the blade whenever you run out of gasoline. If the

blade is damaged or cracked, replace it immediately. If the

blade edge is dull or nicked, have it sharpened or replace it.

1. Disconnect the spark-plug wire from the spark plug.

Refer to Preparing for Maintenance (page 11).

2. Tip the machine onto its side, with the air ﬁlter up.

3. Use a block of wood to hold the blade steady.

4. Remove the blade (turn the blade bolt

counterclockwise), saving all the mounting

hardware.

5. Install the new blade (turn the blade bolt clockwise)

and all mounting hardware (Figure 23).

Figure 24

1. Handle (left side)

2. Adjustment knob

4. Turn the knob clockwise to

tighten the adjustment.

5. Turn the knob

counterclockwise to

loosen the adjustment.

3. Self-propel-drive cable

2. Adjust the tension on the cable (Figure 24) by pulling it

back or pushing it forward and holding that position.

Note: Push the cable toward the engine to increase

the traction; pull the cable away from the engine to

decrease the traction.

3. Turn the adjustment knob clockwise to tighten the

cable adjustment.

Note: Tighten the knob ﬁrmly by hand.

Figure 23

Remove the Machine from

Storage

Store the machine in a cool, clean, dry place.

1. Check and tighten all fasteners.

2. Remove the spark plug and spin the engine rapidly

by pulling the recoil-start handle or using the electric

starter (electric-start model only) to blow the excess

oil from the cylinder.

Preparing the Machine for

Storage

3. Install the spark plug and tighten it with a torque

wrench to 20 N-m (15 ft-lb).

WARNING

Gasoline vapors can explode.

4. Perform any maintenance procedures; refer to

Maintenance (page 11).

• Do not store gasoline more than 30 days.

• Do not store the machine in an enclosure near

an open ﬂame.

5. Check the engine-oil level; refer to Checking the

Engine-Oil Level (page 6).

• Allow the engine to cool before storing it.

6. Fill the fuel tank with fresh gasoline; refer to Filling the

Fuel Tank (page 6).

1. On the last refueling of the year, add fuel stabilizer to

the fuel as directed by the engine manufacturer.

7. Connect the wire to the spark plug.

2. Run the machine until the engine stops from running

out of fuel.

3. Prime the engine and start it again.

4. Allow the engine to run until it stops. When you can

no longer start the engine, it is sufﬁciently dry.

5. Disconnect the wire from the spark plug.

6. Remove the spark plug, add 30 ml (1 oz) of oil through

the spark plug hole, and pull the starter rope slowly

several times to distribute oil throughout the cylinder

to prevent cylinder corrosion during the off-season.

7. Install the spark plug and tighten it with a torque

wrench to 20 N-m (15 ft-lb).

8. Tighten all nuts, bolts, and screws.

Notes:

21 in. Mulching/Rear Bagging

Walk Power Mowers

The Lawn-Boy No-Worry Warranty

A 2-Year Full Warranty (45 Day Limited Warranty for Commercial Use)

The Lawn-Boy True Start Commitment

A 3-Year Full Warranty (Not Applicable for Commercial Use)

Conditions and Products Covered

Items and Conditions Not Covered

Lawn-Boy Inc. and its afﬁliate, Lawn-Boy Warranty Company, pursuant

to an agreement between them, jointly promise to repair the Lawn-Boy

Product listed below if used for residential purposes*; if it is defective in

materials or workmanship or if it stops functioning due to the failure of a

component; or if the Lawn-Boy True Start engine will not start on the ﬁrst or

second pull, provided the routine maintenance required in the Operator's

Manual have been performed.

There is no other express warranty except for special emission system

coverage and engine warranty coverage on some products. This express

warranty does not cover the following:

•

Cost of regular maintenance service or parts, such as ﬁlters, fuel,

lubricants, oil changes, spark plugs, air ﬁlters blade sharpening or worn

blades, cable/linkage adjustments, or brake and clutch adjustments

•

Components failing due to normal wear

This warranty covers the cost of parts and labor, but you must pay

transportation costs.

Any product or part which has been altered or misused or neglected

and requires replacement or repair due to accidents or lack of proper

maintenance

The following time periods apply from the date of purchase:

Products

Warranty Period

2 - year full warranty

•

Pickup and delivery charges

21 in. Mulching/Rear Bagging

Mowers and Attachments

True Start Commitment

Engine

Repairs or attempted repairs by anyone other than an Authorized

Lawn-Boy Service Dealer

3 - year full warranty

1 - year full warranty

90 days

•

Repairs necessary due to failure to follow recommended fuel

procedure (consult Operator's Manual for more details)

Battery

Wear Items (Belts, blades, blade

adaptors, grass bags, cables, and

wheels)

–

Removing contaminants from the fuel system is not covered

Use of old fuel (more than one month old) or fuel which contains

more than 10% ethanol or more that 15% MTBE

Limited Warranty for Commercial Use*

–

Failure to drain the fuel system prior to any period of non-use

over one month

Gas-powered Lawn-Boy Products used for commercial, institutional, or

rental use, are warranted for 45 days against defects in materials or

workmanship. Components failing due to normal wear are not covered

by this warranty.

•

Repairs or adjustments to correct starting difﬁculties due to the

following:

–

Failure to follow proper maintenance procedures or recommended

fuel procedure

The True Start Commitment does not apply when the product is used

commercially*.

–

Rotary mower blade striking an object

Special operational conditions where starting may require more than

two pulls:

Instructions for Obtaining Warranty Service

If you think that your Lawn-Boy Product contains a defect in materials or

workmanship, or if a normal, able-bodied adult can no longer start your

product's engine in one or two pulls, follow this procedure:

–

First time starts after extended period of non-use over three

months or seasonal storage

Cool temperature starts such as those found in early spring and

late autumn

1. Contact any Authorized Lawn-Boy Service Dealer to arrange service

at their dealership. To locate a dealer convenient to you, refer to the

Yellow Pages of your telephone directory (look under “Lawn Mowers”)

or access our web site at www.Lawn-Boy.com. You may also call

the numbers listed in item #3 to use the 24-hour Lawn-Boy Dealer

locator system.

Improper starting procedures - if you are having difﬁculty starting

your unit, please check the Operator's Manual to ensure that

you are using the correct starting procedures. This can save an

unnecessary visit to an Authorized Lawn-Boy Service Dealer.

2. Bring the product and your proof of purchase (sales receipt) to the

Service Dealer. The dealer will diagnose the problem and determine if

it is covered under warranty.

General Conditions

All repairs covered by these warranties must be performed by an Authorized

Lawn-Boy Service Dealer using Lawn-Boy-approved replacement parts.

Repair by an Authorized Lawn-Boy Service Dealer is your sole remedy

under this warranty.

3. If for any reason you are dissatisﬁed with the Service Dealer’s

analysis or with the assistance provided, contact us at:

Customer Care Department

Lawn-Boy Inc.

8111 Lyndale Avenue South

Bloomington, MN 55420-1196

Toll free at 866-216-6032 (U.S. customers)

Toll free at 866-216-6031 (Canadian customers)

Lawn-Boy Inc. nor Lawn-Boy Warranty Company is liable for indirect,

incidental, or consequential damages in connection with the use of

the Lawn-Boy Products covered by these warranties, including any

cost or expense of providing substitute equipment or service during

reasonable periods of malfunction or non-use pending completion of

repairs under these warranties.

Some states do not allow exclusions of incidental or consequential

damages, so the above exclusions may not apply to you.

Owner Responsibilities

You must maintain your Lawn-Boy Product by following the maintenance

procedures described in the Operator's Manual. Such routine maintenance, This warranty gives you speciﬁc legal rights, and you may also have other

whether performed by a dealer or by you, is at your expense. rights which vary from state to state.

Countries Other than the United States or Canada

Customers who have purchased Lawn-Boy products exported from the United States or Canada should contact their Lawn-Boy Distributor (Dealer)

to obtain guarantee policies for your country, province, or state. If for any reason you are dissatisﬁed with your Distributor's service or have difﬁculty

obtaining guarantee information, contact the Lawn-Boy importer. If all other remedies fail, you may contact us at Lawn-Boy Warranty Company.

Australian Consumer Law: Australian customers will ﬁnd details relating to the Australian Consumer Law either inside the box or at your local

Lawn-Boy Dealer.

*Residential purposes means use of the product on the same lot as your home. Use at more than one location, or institutional or rental use, is considered

commercial use and the commercial use warranty would apply.

374-0256 Rev F

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