Toro 22157 Operator's Manual

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FORM NO. 3319–569GB

ProLine 53cm Recycler II

Walk-behind Power Mower

Model No. 22157 — 8900001 & Up

Operator’s Manual

Figures

1. Model and serial number decal

1. Handle latch

2. Bag support rod

3. Cap locknut

4. Handle

224

1. Tank bracket

2. Slots

3. Plastic clips

4. Gas tank

5. Self-tapping screw

530

534

1. Fuel line clamp

2. Fuel line

3. Elbow fitting

2045

EThe Toro Company – 1998

Printed in USA

Figures

1. Rope guide 2. Starter rope

m–210

1. Spring clip

m–275

m–262

1. Discharge door handle 2. Plug rotated clockwise

m–3845

1. Oil fill tube 2. Dipstick

Figures

#4!4#4!4

#4!4

976

1. Ground speed control

224

1. Blade/self-propelled control bar

2. Throttle

3. Fingertip starter

1992

1 2

1. Primer 2. Spark plug wire

m–3662

iii

Figures







m-3769

1. Pin locked in bag notch

m–260

1. Bag frame on retaining post

2. Pin engaged in catch

3. Handle fully forward. Discharge door closed.

m–261

225

1. Height-of-cut adjuster

Figures

1. Knob

2. Cover

3. Foam pre–cleaner

4. Paper cartridge

m–3664

1. Oil fill tube 2. Oil filter

m–3848

1. .020 in. (.5 mm)

m-3862

110

1. Gasket

Figures





1. Cable clamp screw

2. Governor control lever





3. Throttle cable

4. Casing

m-3638

1. One inch

m–1992

1. Control knob

228

1. Blade

2. Blade nuts

3. Anti-scalp cup

4. Accelerator

796

Figures







1. Sail

2. Flat part of blade

3. Wear

4. Slot formed

232

270

1. Grease fitting

1. Sharpen at this angle only

153

1. Grease fitting 2. Belt cover

224

vii

Figures

1. Spring

2. Cable clamp screw

3. Cable conduit

1. Hose clamp

2. Fuel line

278

3. Filter

m–3844



796

1. Kicker plates

1. Washout fitting

2. Quick disconnect coupling

m-2858

3. Hose

viii

Figures

1. BBC shield

2. Tabs and nuts

3. Tab and bolt

12 3 45

20471

1. Side discharge chute

796

67 5 7 8 9

1. Locknuts

2. Wheel spacer

3. Bearing/hub assembly

4. Bearing spacer

5. Wheel half

6. Plastic cover (rear wheels only)

7. Lug

8. Bearing (2)

9. Capscrew

296

Contents

Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Training 2. . . . . . . . . . . . . . . . . . . . . . . . . . .

Preparation 2. . . . . . . . . . . . . . . . . . . . . . . . .

Operation 2. . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance And Storage 3. . . . . . . . . . . . .

Sound Pressure Level 4. . . . . . . . . . . . . . . . .

Sound Power Level 4. . . . . . . . . . . . . . . . . .

Vibration Level 4. . . . . . . . . . . . . . . . . . . . .

Symbol Glossary 5. . . . . . . . . . . . . . . . . . . .

Assembly 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Handle 8. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Gas Tank 8. . . . . . . . . . . . . . . . . . . . . . . . . .

Discharge Tunnel Plug 8. . . . . . . . . . . . . . . .

Before Starting 8. . . . . . . . . . . . . . . . . . . . . . . . . .

Fill Crankcase With Oil 8. . . . . . . . . . . . . . .

Fill Fuel Tank With Gasoline 9. . . . . . . . . . .

Recycling Tips 10. . . . . . . . . . . . . . . . . . . . . . . . . .

General Tips 10. . . . . . . . . . . . . . . . . . . . . . . .

Operation 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Tips 11. . . . . . . . . . . . . . . . . . . . . .

Controls 11. . . . . . . . . . . . . . . . . . . . . . . . . . .

Starting, Stopping, And Self–propelling 11. .

Using Discharge Tunnel Plug 11. . . . . . . . . .

Using Grass Bag 12. . . . . . . . . . . . . . . . . . . . .

Adjusting Height-of-cut 13. . . . . . . . . . . . . . .

Maintenance 13. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Servicing Air Cleaner 13. . . . . . . . . . . . . . . .

Replacing Spark Plug 14. . . . . . . . . . . . . . . . .

Draining Gasoline 14. . . . . . . . . . . . . . . . . . .

Changing Crankcase Oil 14. . . . . . . . . . . . . .

Replacing Oil Filter 14. . . . . . . . . . . . . . . . . .

Adjusting Throttle 15. . . . . . . . . . . . . . . . . . .

Cleaning Cooling System 15. . . . . . . . . . . . . .

Adjusting Wheel Drive 15. . . . . . . . . . . . . . .

Inspecting/Removing/Sharpening Blade 15. .

Lubrication 16. . . . . . . . . . . . . . . . . . . . . . . . .

Lubricating Gear Case 16. . . . . . . . . . . . . . . .

Page

Adjusting Blade Brake Cable 16. . . . . . . . . . .

Cleaning Mower 17. . . . . . . . . . . . . . . . . . . . .

Cleaning Blade Brake Clutch Shield 18. . . . .

Servicing Wheels 18. . . . . . . . . . . . . . . . . . . .

Fuel Filter 19. . . . . . . . . . . . . . . . . . . . . . . . . .

Storage 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessories 20. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction

Thank you for purchasing a Toro product. All of us at Toro want you to be completely satisfied

with your new product, so feel free to contact your local Authorized Service Dealer for help with service, genuine Toro parts, or other information you may require.

Whenever you contact your Authorized Service Dealer or the factory, always know the model and serial numbers of your product. These numbers will help the Service Dealer or Service Representative provide exact information about your specific product. You will find the model and serial number decal located in a unique place on the product (Fig. 1).

For your convenience, write the product model and serial numbers in the space below.

Model No:

Serial No.

Read this manual carefully to learn how to operate and maintain your product correctly. Reading this manual will help you and others avoid personal injury and damage to the product. Although Toro designs, produces and markets safe, state-of-the-art products, you are responsible for using the product properly and safely. You are also responsible for training persons who you allow to use the product about safe operation.

The Toro warning system in this manual identifies potential hazards and has special safety messages that help you and others avoid personal injury, even death.

GB–1

DANGER, WARNING and CAUTION are signal words used to identify the level of hazard. However, regardless of the hazard, be extremely careful.

DANGER signals an extreme hazard that will cause serious injury or death if the recommended precautions are not followed.

WARNING signals a hazard that may cause serious injury or death if the recommended precautions are not followed.

CAUTION signals a hazard that may cause minor or moderate injury if the recommended precautions are not followed.

Preparation

1. While mowing, always wear substantial

footwear and long trousers. Do not operate the equipment when barefoot or wearing open sandals.

2. Always wear safety glasses or eye shields during

operation to protect eyes from foreign objects that may be thrown from the machine. Keep face, hands, and feet away from the mower housing and cutter blade when the engine is running. Stay behind the handle until the engine stops.

3. Thoroughly inspect the area where the

equipment is to be used and remove all objects which may be thrown by the machine.

Two other words are also used to highlight information. “Important” calls attention to special mechanical information and “Note” emphasizes general information worthy of special attention.

The left and right side of the machine is determined by standing behind the handle in the normal operator’s position.

Safety

Training

1. Read the instructions carefully. Be familiar with

the controls and the proper use of the equipment.

2. Never allow children or people unfamiliar with

these instructions to use the lawnmower. Local regulations may restrict the age of the operator.

3. Never mow while people, especially children, or

pets are nearby.

4. WARNING – Petrol is highly flammable.

• Store fuel in containers specifically designed for

this purpose.

• Refuel outdoors only and do not smoke while

refuelling.

• Add fuel before starting the engine. Never

remove the cap of the fuel tank or add petrol while the engine is running or when the engine is hot.

• If petrol is spilled, do not attempt to start the

engine but move the machine away from the are of spillage and avoid creating any source of ignition until petrol vapors have dissipated.

• Replace all fuel tanks and container caps

securely.

5. Replace faulty silencers.

6. Before using, always visually inspect to see that

the blades, blade bolts and cutter assembly are not worn or damaged. Replace worn or damaged blades and bolts in sets to preserve balance.

7. On multi-bladed machines, take care as rotating

one blade can cause other blades to rotate.

Operation

4. Keep in mind that the operator or user is

responsible for accidents or hazards occurring to other people or their property.

GB–2

1. Do not operate the engine in a confined space

where dangerous carbon monoxide fumes can collect.

2. Mow only in daylight or in good artificial light.

3. Avoid operating the equipment in wet grass,

where feasible.

4. Always be sure of your footing on slopes.

17. Do not put hands or feet near or under rotating

parts. Keep clear of the discharge opening at all

times.

18. Never pick up or carry a lawnmower while the

engine is running.

5. Walk, never run.

6. For wheeled rotary machines, mow across the

face of slopes, never up and down.

7. Exercise extreme caution when changing

direction on slopes.

8. Do not mow excessively steep slopes.

9. Use extreme caution when reversing or pulling

the lawnmower towards you.

10. Stop the blade(s) if the lawnmower has to be

tilted for transportation when crossing surfaces other than grass, and when transporting the lawnmower to and from the area to be mowed.

11. Never operate the lawnmower with defective

guards or shields, or without safety devices for example deflectors and/or grass catchers in place.

19. Stop the engine and disconnect the spark plug

wire.

• before clearing blockages or unclogging chute;

• before checking, cleaning or working on the

lawnmower;

• after striking a foreign object. Inspect the

lawnmower for damage and make repairs before

restarting and operating the lawnmower;

• if lawnmower starts to vibrate abnormally (check

immediately).

20. Stop the engine

• whenever you leave the lawnmower;

• before refuelling.

21. Reduce the throttle setting during engine shut

down and, if the engine is provided with a

shut-off valve, turn the fuel off at the conclusion

of mowing.

12. Do not change the engine governor settings or

overspeed the engine.

13. Disengage all blade and drive clutches before

starting the engine.

14. Start the engine or switch on the motor carefully

according to instructions and with feet well away from the blade(s).

15. Do not tilt the lawnmower when starting the

engine or switching on the motor, except if the lawnmower has to be tilted for starting. In this case, do not tilt it more than absolutely necessary and lift only the part which is away from the operator.

16. Do not start the engine when standing in front of

the discharge chute.

22. Go slow when using a trailing seat.

Maintenance And Storage

1. Keep all nuts, bolts and screws tight to be sure

the equipment is in safe working condition.

2. Never store the equipment with petrol in the tank

inside a building where fumes may reach an

open flame or spark.

3. Allow the engine to cool before storing in any

enclosure.

4. To reduce the fire hazard, keep the engine,

silencer, battery compartment and petrol storage

area free of grass, leaves, or excessive grease.

5. Check the grass catcher frequently for wear or

deterioration.

GB–3

6. Replace worn or damaged parts for safety.

Sound Power Level

7. If the fuel tank has to be drained, this should be

done outdoors.

Sound Pressure Level

This unit has an equivalent continuous A-weighted sound pressure at the operator ear of: 85 dB(A), based on measurements of identical machines per ANSI B71.5-1984 procedures.

This unit has a sound power level of: 100 dB(A)/1 pW, based on measurements of identical machines per Directive 84/538/EEC and amendments.

Vibration Level

This unit has a maximum hand-arm vibration level of

4.20 m/s@, based on measurement of identical machines per ISO 5349 procedures.

GB–4

Symbol Glossary

Safety alert triangle — symbol within triangle indicates a hazard.

Safety alert symbol

Read operator’s manual.

Consult technical manual for proper service procedures.

Do not open or remove safety shields while engine is running.

Rotating blade can cut off toes or fingers. Stay clear of mower blade as long as engine is running.

To avoid blade failure when mulching, use blade stiffener when mower is equipped with mulching plug.

Transmission

Stay a safe distance from the machine.

Stay a safe distance from the mower.

Throw or flying objects — Whole body exposure

Thrown or flying objects — Rotary side-mounted mower. Keep deflector shield in place.

Oil

On/Run

Engage

Disengage

GB–5

Stop engine before leaving operator position.

Battery charging condition

Hourmeter/elapsed operating hours

Fast Neutral

Slow First gear

Decreasing/Increasing Second gear

Grease lubrication point

Fuel

Third gear

Engine start

Engine stop

Choke Pull rope.

Cutting element — basic symbol

Cutting element — height adjustment

GB–6

Primer (start aid) Wheel

Push primer three times.

Properly dispose of batteries.

Insert key in ignition switch.

Turn key in ignition switch.

Move control.

Wheel traction

Lower control bar.

Raise control bar.

Raise/lower control bar.

Move control forward. Raise control bar.

Move control rearward.

Raise control bar.

Lower control bar.

GB–7

Assembly

Handle

1. Mount handle to outside of mower housing,

using bottom hole, with (2) 5/16–18 x 1–1/4” lg. capscrews, washers, and thin nylon insert locknuts (Fig. 2).

2. Secure handle latches to handle with (2) 5/16–18

x 1–1/2” lg. capscrews, washers and nylon insert locknuts (Fig. 2).

Note: Handle height is adjustable for

operator comfort. Stand behind mower handle to gauge height. To adjust handle height, reposition capscrews and locknuts securing handle latches to handle into other mounting holes in latches.

Discharge Tunnel Plug

1. Open the discharge door by pulling forward on

the handle and moving it rearwards (Fig. 6). Hold the discharge door handle to prevent the spring–loaded door from closing while inserting the plug.

2. Since the plug is slightly wider than the

discharge tunnel opening, rotate the plug clockwise slightly while inserting it (Fig. 6). Make sure the arrow on the plug decal is pointing upwards.

3. Push the plug all the way in until the spring clip

on the bottom of the plug clicks into place, locking the plug securely into the discharge tunnel (Fig. 6). Release discharge door handle to lock top of plug.

Before Starting

3. Slide bag support rod thru top mounting holes in

handle and secure each end with a cap locknut (Fig. 2).

4. Use a cable tie to secure the control cables to left

handle below the bag support rod.

5. Pull starter rope through rope guide on handle

(Fig. 5).

Gas Tank

1. Start self–tapping screws into bottom of gas tank

and then remove screws.

2. Hook plastic clips on front of gas tank into slots

on rear of engine (Fig. 3).

3. Secure gas tank to tank base with (2)

self–tapping screws (Fig. 3). Do not overtighten screws.

4. Remove red cap from end of fuel line and from

end of elbow fitting on gas tank. Slide end of fuel line onto elbow fitting (Fig. 4). Secure fuel line in place with fuel line clamp.

Fill Crankcase With Oil

Fill crankcase with SAE 30 or 10W30 oil until oil level reaches FULL mark on dipstick as shown in (Fig. 8). The maximum crankcase capacity is 26 ounces (0.77 liters) of oil with the oil filter installed and 22 ounces (0.65 liters) without the oil filter installed. Use any high quality detergent oil having the American Petroleum Institute (API) “service classification” — SF, SG, SH or SJ.

Before each use, ensure oil level is between ADD and FULL marks on dipstick (Fig. 8). Add oil if level is low.

1. Position mower on level surface and clean

around oil dipstick.

2. Remove dipstick by rotating cap

counterclockwise 1/4 turn.

3. Wipe dipstick and insert it into filler neck.

Rotate cap clockwise 1/4 turn. Then remove dipstick and check level of oil (Fig. 8). If level is low, add only enough oil to raise level to FULL mark on dipstick. DO NOT FILL ABOVE

FULL MARK BECAUSE ENGINE COULD BE DAMAGED WHEN STARTED. POUR OIL SLOWLY.

GB–8

4. Insert dipstick into filler neck and rotate cap

clockwise 1/4 turn to lock. Note: Check oil level each time mower is

used or after every 5 operating hours. Initially, change oil after the first 5 hours of operation; thereafter, change oil after every 50 hours of operation. More frequent oil changes are required in dusty or dirty conditions.

Fill Fuel Tank With Gasoline

POTENTIAL HAZARD

• In certain conditions gasoline is extremely

flammable and highly explosive.

WHAT CAN HAPPEN

• A fire or explosion from gasoline can burn

you, others, and cause property damage.

HOW TO AVOID THE HAZARD

• Use a funnel and fill the fuel tank outdoors,

in an open area, when the engine is cold. Wipe up any gasoline that spills.

• Do not fill the fuel tank completely full.

Add gasoline to the fuel tank until the level is 1/4” to 1/2” (6 mm to 13 mm) below the bottom of the filler neck. This empty space in the tank allows gasoline to expand.

• Never smoke when handling gasoline, and

stay away from an open flame or where gasoline fumes may be ignited by a spark.

• Store gasoline in an approved container

and keep it out of the reach of children.

• Never buy more than a 30-day supply of

gasoline.

This engine is certified to operate on unleaded gasoline. Toro strongly recommends the use of fresh, clean, UNLEADED regular grade gasoline with an octane rating of 85 or higher in Toro gasoline powered products. Unleaded gasoline burns cleaner, extends engine life, and promotes good starting by reducing the build-up of combustion chamber

deposits. In countries other than U.S.A., leaded gasoline may be used if it is commercially available and unleaded is unavailable.

IMPORTANT: Do not mix oil with the gasoline. Do not use gasoline that has been stored in an approved container from one season to the next.

Toro also recommends that Toro Stabilizer/Conditioner be used regularly in all Toro gasoline powered products during operation and storage seasons. Toro Stabilizer/Conditioner cleans the engine during operation and prevents gum–like varnish deposits from forming in the engine during periods of storage.

IMPORTANT: Some fuels, called oxygenated or reformulated gasolines, are gasolines blended with alcohols or ethers. Excessive amounts of these blends can damage the fuel system or cause performance problems. Never use methanol gasoline containing methanol, gasohol containing more than 10% ethanol or white gas because engine fuel system damage could result. If any undesirable operating symptoms occur, use gasoline with a lower percentage of alcohol or ether.

Do not use fuel additives other than those manufactured for fuel stabilization during storage such as Toro’s Stabilizer/Conditioner or a similar product. Toro’s Stabilizer/Conditioner is a petroleum distillate based conditioner/stabilizer. Toro does not recommend stabilizers with an alcohol base such as ethanol, methanol or isopropyl. Additives should not be used to try to enhance the power or performance of machine.

1. Clean around fuel tank cap and remove cap from

tank. Using unleaded gasoline, add fuel to 1/4”

to 1/2” (6 to 13 mm) from top of tank, not into

the filler neck. Do not fill the tank full.

2. Reinstall fuel tank cap and wipe up any spilled

gasoline.

3. Connect spark plug wire (if disconnected)

(Fig. 12).

GB–9

Recycling Tips

General Tips

!/3 of the grass blade should be cut off. Cutting below the 1-#/4” setting is not recommended unless grass is sparse or it is late fall when grass growth begins to slow down.

Follow these instructions whether cutting grass or leaves for the best cutting results and lawn appearance:

• Maintain a sharp blade

season. Periodically file down nicks on blade.

• Only mow dry grass or leaves. Wet grass and

leaves tend to clump on yard and may cause mower to plug or engine to stall. They also may be slippery to walk on and could cause you to slip and fall.

POTENTIAL HAZARD

throughout the cutting

• Wet grass or leaves can cause you to slip

and contact blade.

WHAT CAN HAPPEN

• Blade contact can seriously injure you.

HOW TO AVOID THE HAZARD

• Mow only in dry conditions.

• Set engine speed to fastest position. Maximum

horsepower provides best cutting results.

• When cutting grass over six inches tall, you may

want to first mow using the highest height-of-cut setting and a slower walking speed; then mow again at a lower setting for best lawn appearance. If grass is too long and leaves clumps on top of lawn, mower may plug and cause engine to stall.

• Alternate mowing direction. This helps disperse

clippings over lawn for even fertilization.

If the finished cut lawn appearance is unsatisfactory, try one or more of the following:

• Sharpen the blade.

• Walk at a slower pace while mowing.

• Raise the height-of-cut setting on your mower.

• Cut grass more frequently.

• Overlap cutting swaths instead of cutting a full

swath with each pass.

• Mow across the marginal areas a second time.

• Set height-of-cut on front wheels one notch

lower than rear wheels. (example: set front wheels at 1-#/4” setting and rear wheels at 2-!/4” setting)

• Clean clippings or leaves from underside of

mower deck after each mowing.

• Keep engine in good running condition. Cutting

and recutting requires more horsepower.

• Clean air filter more frequently. Cutting and

recutting stirs up more clippings and dust which clogs the air filter and reduces engine performance.

Cutting Grass

• Grass grows at different rates at different times

of the year. In the heat of the summer, it is generally best to cut grass at the 1-#/4”, 2-!/4” or 2-#/4” height-of-cut settings (Fig. 9). Only about

GB–10

Cutting Leaves

• When cutting is complete, always be sure that

50% of the lawn shows through the cut leaf cover. This may require one or more passes over the leaves.

• For light leaf coverage, position all wheels at the

same height-of-cut setting.

• If there are more than five inches of leaves on

lawn, set the front wheels one or two notches higher than the rear wheels. This makes it easier to feed leaves under mower deck.

• Walk at a slower mowing speed if leaves are not

being cut up finely enough to be hidden down in the grass.

• If you cut up a lot of oak leaves, you might want

to add lime to your grass in the spring. Lime reduces the acidity of oak leaves.

Operation

Operating Tips

1. CHECK OIL LEVEL—Maintain oil level

between ADD and FULL marks as shown on dipstick (Fig. 8).

2. BEFORE EACH MOWING—Be sure blade

brake, self–propelled drive, and control bar function properly. When control bar is released, blade and self–propelled drive are designed to stop. If controls are not functioning properly, do not use mower until controls are repaired.

3. SHARP BLADE—Begin each cutting season

with a sharp blade. Periodically file down nicks.

Controls

Throttle control, blade/self–propelled control bar and fingertip starter are on upper handle (Fig. 10). Ground speed control is located at rear of belt cover (Fig. 11).

Note: Do not use primer to restart a warm

engine after a short shutdown. However, cool weather may require priming to be repeated.

5. Pull recoil starter out until positive engagement

results; then pull vigorously to start the engine.

Allow the engine to warm-up. During warm-up,

the equipment can be operated. Regulate throttle

as desired when engine starts. Move ground

speed control to desired setting.

6. BLADE AND TRACTION OPERATION

(Fig. 13)—When control bar is in position “A”,

slide control bar to right and raise to position

“B” to engage blade. Squeeze control bar against

handle to position “C” to drive. To disengage

traction drive but keep blade engaged, gradually

release control bar to position “B”. To

self–propel with blade disengaged, simply

squeeze control bar against handle to position

“C”, without sliding control bar to right.

7. STOPPING—To stop engine, release control bar

and move throttle control to

off spark plug if mower will be unattended or

not used.

(OFF). Pull wire

Using Discharge Tunnel Plug

Starting, Stopping, And Self–propelling

Note: The engine requires a warm-up period

of one minute to several minutes, depending on the temperature.

1. Push spark plug wire onto spark plug (Fig. 12).

2. Move throttle control to

3. Move ground speed control to

4. Push primer three (3) times (Fig. 12). Wait about two (2) seconds between each push.

(FAST) position.

(NEUTRAL).

1. Make sure engine is off. Open the discharge door

by pulling forward on the handle and moving it rearwards (Fig. 6). Hold the discharge door handle to prevent the spring–loaded door from closing while inserting the plug.

2. Since the plug is slightly wider than the

discharge tunnel opening, you must rotate the plug clockwise slightly while inserting it (Fig. 6). Make sure the arrow on the plug decal is pointing upwards.

3. Push the plug all the way in until the spring clip

on the bottom of the plug clicks into place, locking the plug securely into the discharge tunnel (Fig. 7). Release the discharge door handle to lock the top of the plug.

GB–11

4. To remove the plug, move the discharge door

handle rearwards while at the same time lift up the spring clip on the bottom of the plug. When the plug is unlocked, pull it out of the discharge tunnel.

Note: When grass is thick and lush, clippings

may collect on and around the discharge tunnel plug. This may make plug removal difficult. Clean plug thoroughly after each use. Refer to Cleaning Mower, page 17.

Using Grass Bag

Occasionally you may wish to use the grass bag for bagging extra long grass, lush grass or leaves.

1. Stop engine and wait for all moving parts to

stop.

4. Pull discharge door handle forward until pin

clears catch and move handle rearward until pin locks in bag notch (Fig. 15). Discharge door in mower housing is now open.

POTENTIAL HAZARD

• A worn grass bag could allow small stones

and other similar debris to be thrown in operator’s or bystander’s direction.

WHAT CAN HAPPEN

• Thrown objects can cause serious personal

injury or death to operator or bystanders.

HOW TO AVOID THE HAZARD

• Check the grass bag frequently. If it is

damaged, install a new genuine TORO replacement bag.

2. Ensure discharge door handle is fully forward

and pin is engaged in catch (Fig. 14).

3. INSTALLING BAG—Slide hole in bag frame

onto retaining post on discharge tunnel (Fig. 14). Set rear of bag frame onto lower handle.

POTENTIAL HAZARD

• Grass clippings and other objects can be

thrown from an open discharge tunnel.

WHAT CAN HAPPEN

• Objects thrown with enough force could

cause serious personal injury or death to operator or bystander.

HOW TO AVOID THE HAZARD

• Never open door on discharge tunnel when

engine is running unless the grass bag, optional side discharge attachment or discharge tunnel plug is securely installed.

POTENTIAL HAZARD

• Thrown objects may result if discharge

door does not close completely.

WHAT CAN HAPPEN

• Thrown objects can cause serious

personal injury or death.

HOW TO AVOID THE HAZARD

• If discharge door cannot be closed because

grass clippings clog discharge area, stop engine and gently move discharge door handle back and forth until door can be closed completely. If door still cannot be closed, remove obstruction with a stick, not your hand.

5. EMPTYING BAG—Stop engine and wait for all

moving parts to stop. Raise discharge door handle and move it forward to engage the locking pin with the catch (Fig. 14). Grasp handles at front and rear of bag and lift bag off mower. Gradually tip bag forward to empty clippings.

GB–12

6. To reinstall bag, repeat steps 3-4.

Adjusting Height-of-cut

The height-of-cut is adjustable from approximately #/4 to 3-!/4 inches (19 mm to 83 mm), in !/2 inch (12.7 mm) increments (Fig. 9). Moving height-of-cut adjuster forward raises height-of-cut.

1. Stop the engine and wait for all moving parts to stop. Pull wire off spark plug (Fig. 12).

Maintenance

POTENTIAL HAZARD

• When wire is on spark plug, someone could

accidentally start the engine.

WHAT CAN HAPPEN

• Accidental starting of engine could

seriously injure you or other bystanders.

HOW TO AVOID THE HAZARD

• Pull wire off spark plug before you do any

maintenance. Also push wire aside so it does not accidentally contact spark plug.

Servicing Air Cleaner

2. For easier adjustment, lift housing up so wheel is off ground. Do not place hands under deck to lift housing. Squeeze adjusting lever toward wheel (Fig. 16) and move it to the desired setting. Assure pin on adjusting lever engages notch in mower housing wear plate. Adjust all wheels to the same setting.

POTENTIAL HAZARD

• Adjusting height-of-cut levers could bring

hands into contact with moving blade.

WHAT CAN HAPPEN

• Contact with blade could cause serious

personal injury.

HOW TO AVOID THE HAZARD

• Stop engine and wait for all moving parts

to stop before changing height-of-cut.

• Do not put fingers under housing to lift

mower when adjusting height-of-cut levers.

Normally, clean air cleaner pre-cleaner after every 25 operating hours or every season. Clean the paper cartridge after every 100 hours or every season. More frequent cleaning is required when mower is operated in dusty or dirty conditions. Replace air cleaner parts, if very dirty.

IMPORTANT: Do not operate engine without air filter elements; extreme engine wear or damage will occur.

Note: Tipping mower on wrong side to

service underside of mower may cause damage to air filters.

1. Stop engine and pull wire off spark plug

(Fig. 12).

2. Remove two (2) knobs securing air cleaner cover

to engine (Fig. 17).

3. Lift cover off. Clean cover thoroughly.

4. Carefully remove pre-cleaner. If pre-cleaner is

dirty, carefully wash it in a solution of liquid soap and warm water. Rinse in clear water. Allow to dry thoroughly before using.

5. If paper cartridge is dirty, clean the paper filter by tapping it gently on a flat surface. If very dirty, replace cartridge.

GB–13

IMPORTANT: Do not oil pre–cleaner or paper cartridge. Do not use pressurized air to clean paper cartridge.

6. Reinstall pre-cleaner over paper cartridge.

Reinstall air cleaner cover and tighten securely in place with two (2) knobs.

Changing Crankcase Oil

Change oil after the first 5 operating hours and then after every 50 hours or every season. Change oil while engine is warm.

Note: Change oil every 25 hours when

operating under heavy load or in high temperatures.

Replacing Spark Plug

Remove plug after every 25 operating hours and check its condition. Replace spark plug every 100 operating hours or every season. Use a Champion RC12YC spark plug or equivalent.

1. Stop engine and wait for all moving parts to

stop. Pull wire off spark plug (Fig. 12).

2. Clean around spark plug and remove plug from

cylinder head.

IMPORTANT: Replace a cracked, fouled, or dirty spark plug. Do not sand blast, scrape, or clean electrodes because engine damage could result from grit entering cylinder.

3. Set air gap at 0.020” (0.5 mm) (Fig. 18). Install

correctly gapped spark plug and gasket seal. Tighten plug firmly to 14 ft–lb (19 Nm).

1. Stop engine and wait for all moving parts to

stop. Pull wire off spark plug (Fig. 12).

2. Remove grass bag. Drain gasoline from fuel

tank: refer to Draining Gasoline, page 14.

3. Remove dipstick from oil fill tube and place a

drain pan next to left side of mower.

4. Tip mower on its left side, allowing oil to drain

into drain pan (Fig. 19).

5. When oil is drained, return mower to upright

position and add fresh oil to engine. Refer to Fill Crankcase With Oil, page 8.

Replacing Oil Filter

Replace the oil filter (Fig. 19) after every 100 operating hours or yearly, whichever occurs first.

1. Drain gasoline from fuel tank; refer to Draining

Gasoline, page 14.

Draining Gasoline

1. Stop engine and wait for engine to cool. Pull

wire off spark plug (Fig. 12).

Note: Drain gasoline from a cold engine

only.

2. Remove cap from fuel tank and use pump–type

syphon to drain fuel into clean gas can.

Note: This is the only procedure

recommended for draining fuel.

GB–14

2. Drain oil. Refer to Changing Crankcase Oil,

page 14.

3. Place a rag under oil filter to catch any oil that

may leak out as filter is removed.

4. Remove oil filter and discard it.

5. Using your finger, coat the gasket on the new

filter with oil (Fig. 20).

6. Install the new filter and hand tighten it 2/3 turn

only.

7. Check the filter for any oil leaks.

8. Properly discard the oily rag.

Adjusting Throttle

Throttle control adjustment may be required if engine does not start. Whenever a new throttle control cable is installed, throttle must be adjusted.

3. CHECK ADJUSTMENT—Slowly pull mower backward while control bar is gradually moved toward handle. Adjustment is correct when rear wheels stop turning and control bar is about 1 inch from handle (Fig. 23).

1. Stop engine and wait for all moving parts to

stop. Pull wire off spark plug (Fig. 12).

2. Loosen cable clamp screw until throttle cable

slides (Fig. 21).

3. Move governor control lever, throttle cable and

casing in direction of arrow as far as possible (Fig. 21).

4. Move throttle control to

5. Tighten cable clamp screw to lock adjustment in

place.

(FAST position).

Cleaning Cooling System

After every 100 operating hours, clean dirt and chaff from cylinder, cylinder head fins and from around carburetor and linkage. Also remove debris from air intake slots on recoil housing. This will ensure proper cooling and optimum engine performance.

Adjusting Wheel Drive

Inspecting/Removing/ Sharpening Blade

Always mow with a sharp blade. A sharp blade cuts cleanly and without tearing or shredding the grass blades like a dull blade.

1. Stop engine and wait for all moving parts to stop. Pull wire off spark plug (Fig. 12).

2. Drain gasoline from fuel tank; refer to Draining Gasoline, page 14.

3. Tip mower on its left side (Fig. 24).

POTENTIAL HAZARD

• Someone could accidentally start the

engine.

WHAT CAN HAPPEN

• Accidental starting of engine could cause

serious injury to operator or bystanders.

HOW TO AVOID THE HAZARD

• Do not attempt to inspect, remove or

replace blade without first removing the spark plug wire from spark plug and fastening it away from accidental contact with spark plug.

If mower does not self–propel or self–propels when control bar is more than 1–1/2 inches from the handle, adjust wheel drive control knob on rear of gear box.

1. Close door in mower housing and remove grass

bag.

2. ADJUSTMENT (Fig. 22)—Rotate control knob

clockwise 1/2 turn if mower does not self–propel. If mower creeps forward, rotate knob 1/2 turn counterclockwise to loosen belt.

4. INSPECTING BLADE—Carefully examine blade for sharpness and wear, especially where flat and curved parts meet (Fig. 25A). Since sand and abrasive material can wear away the metal that connects the flat and curved parts of the blade, check blade before using the mower. If a slot or wear is noticed, (Fig. 25B & C), replace blade. Refer to step 5.

Note: For best performance, install new blade

before cutting season begins. During the year, file down small nicks to maintain the cutting edge.

GB–15

POTENTIAL HAZARD

• A worn or damaged blade could break and

a piece of blade could be thrown into operator’s or bystander’s area.

POTENTIAL HAZARD

• Operating mower without accelerator in

place could cause blade to flex, bend or break.

WHAT CAN HAPPEN

• A thrown piece of blade could cause serious

personal injury or death to operator or bystanders.

HOW TO AVOID THE HAZARD

• Inspect blade periodically for wear or

damage.

• Replace a worn or damaged blade.

5. REMOVING BLADE—Grasp end of blade

using a rag or thickly padded glove. Remove blade nuts, anti–scalp cup, accelerator, and blade (Fig. 24).

6. SHARPENING BLADE—Using a file, sharpen

top side of blade and maintain original cutting angle (Fig. 26). The blade will remain balanced if same amount of material is removed from both cutting edges.

WHAT CAN HAPPEN

• A broken blade could cause serious injury

or death to operator or bystanders.

HOW TO AVOID THE HAZARD

• Do not operate mower without accelerator.

Lubrication

After every 25 operating hours or when season ends, pivot arms must be lubricated.

1. Move rear wheel height–of–cut levers to center

setting. Wipe grease fittings with clean rag (Fig. 27). Install grease gun onto fitting and gently apply 2 or 3 pumps of #2 Multi–Purpose Lithium Base Grease. Excessive grease pressure may damage seals.

Lubricating Gear Case

After every 100 operating hours, grease the gear case with #2 Multi–Purpose Lithium Base Grease.

IMPORTANT: Check balance of blade by putting it on a blade balancer. An inexpensive balancer can be purchased at a hardware store. A balanced blade stays in a horizontal position and an unbalanced blade settles to the heavy side. If blade is not balanced, file more metal off cutting edge on heavy end of blade.

7. Reinstall sharp, balanced blade, blade

accelerator, anti–scalp cup, and blade nuts. Sail part of blade must point toward top of mower housing to assure correct installation. Tighten blade nuts to 15–27 ft–lbs (20–37 Nm).

GB–16

1. Remove bag.

2. Install grease gun onto fitting thru belt cover

opening (Fig. 28). Gently apply 1–2 pumps of grease.

3. Reinstall bag.

Adjusting Blade Brake Cable

Whenever a new blade brake cable assembly is installed or the blade brake belt is replaced, the blade brake cable should be adjusted.

1. Stop engine and wait for all moving parts to

stop. Pull wire off spark plug (Fig. 12).

2. Loosen cable clamp screw until brake cable

conduit slides (Fig. 29). Pull cable to remove slack, but do not put tension on spring. Tighten screw to lock adjustment in place.

POTENTIAL HAZARD

• Do not over–tighten blade brake cable.

Over–tightening could cause blade brake to be pulled off brake drum. If brake does not contact drum, blade will not stop rotating when control bar is released.

WHAT CAN HAPPEN

• A rotating blade could cause serious

personal injury.

HOW TO AVOID THE HAZARD

• Check the blade brake mechanism each

time brake cable is adjusted to ensure brake is stopping blade in 3 seconds or less.

• If blade does not stop rotating in 3 seconds

or less, bring unit to your local Authorized Toro Service Dealer for inspection and repair.

POTENTIAL HAZARD

• Grass clippings and other objects can be

thrown from an open discharge tunnel.

WHAT CAN HAPPEN

• Thrown objects can cause serious injury or

kill operator or bystanders.

HOW TO AVOID THE HAZARD

• Never start or operate the mower unless

one of the following is true:

1. The discharge tunnel plug is locked securely in discharge tunnel.

2. The grass bag is locked in place.

3. The optional side discharge chute is locked in place.

4. The discharge tunnel door is locked in place.

Underside of Mower Housing

Keep underside of mower housing clean. Be especially careful to keep kickers free of debris (Fig. 32).

Cleaning Mower

Plug

To ensure best performance, the discharge tunnel plug must be cleaned after each use. When grass is thick and lush, clippings may collect on and around the plug; this may make plug removal difficult. After each use, remove plug from discharge tunnel and clean off all debris.

Discharge Tunnel

Always be sure that discharge tunnel door closes securely when handle is released. If debris prevents discharge door from closing securely, clean inside of discharge tunnel and door thoroughly.

Washing Method

1. Position mower on a flat surface near a garden hose.

2. Attach a quick disconnect coupling (sold separately) to the end of the garden hose. Attach coupling to mower washout fitting and turn water on high (Fig. 30).

3. Start the engine.

4. Let mower run for two minutes.

5. Stop the engine.

6. Turn the water off and remove coupling from the

washout fitting.

7. Restart mower and let it run for one minute to dry out moisture on the mower and its components.

GB–17

8. If underside of mower deck has excessive grass

build-up or packing, reconnect the hose to the washout fitting, turn the water on high and run the mower for two minutes. Stop the mower and turn off the water. Let the mower soak for 30 minutes. Then turn the water on high again and run the mower for another two minutes.

1. Stop engine and wait for all moving parts to

stop. Pull wire off spark plug (Fig. 12).

2. Drain gasoline from fuel tank; refer to Draining

Gasoline, page 14.

3. Tip mower on its left side.

Scraping Method

If washing does not remove all debris from under deck, tip mower and scrape it clean.

1. Pull wire off spark plug (Fig. 12).

2. Drain gasoline from fuel tank: refer to Draining

Gasoline, page 14.

3. Tip mower on its left side (Fig. 32).

4. Remove dirt and grass clippings with a

hardwood scraper. Avoid burrs and sharp edges.

5. Turn mower upright.

6. Refill gas tank.

7. Reconnect spark plug wire.

Belt Cover

Keep area under belt cover free of debris.

1. Remove bolts securing belt cover (Fig. 28) to

mower housing. Lift off cover and brush out all debris from belt area. Reinstall belt cover.

4. Remove (2) blade nuts, anti–scalp cup,

accelerator, and blade (Fig. 24).

5. Loosen tabs securing BBC shield to deck by

loosening nuts or bolts on tabs (Fig. 33). Rotate tabs 180_ to move them out of the way.

6. Remove BBC shield and brush or blow all debris

from under shield and around BBC system.

7. Reinstall BBC shield. Rotate tabs 180_ back into

position. Tighten nuts or bolts on tabs to secure BBC shield to deck.

8. Reinstall blade, accelerator, anti–scalp cup, and

(2) blade nuts.

9. Turn mower upright.

10. Reinstall spark plug wire on spark plug.

Servicing Wheels (Fig. 34)

Removal

1. Stop engine and wait for all moving parts to

stop. Pull wire off spark plug (Fig. 12).

2. Remove capscrew, wheel spacer, and locknut

mounting wheel to pivot arm.

Cleaning Blade Brake Clutch Shield

The BBC (Blade Brake Clutch) shield should be cleaned periodically during the mowing season and at the end of each mowing season to ensure best performance and to prevents parts degradation. It is convenient to clean the BBC shield at the same time the blade is being sharpened because the blade needs to be removed in order to remove the BBC shield.

GB–18

3. Separate wheel halves from tire by removing (4)

capscrews and locknuts. Note: If bearings are to be removed from

bearing/hub assembly, remove by pressing on bearing spacer.

Assembly

1. Position tire onto (1) wheel half, aligning lugs

on each.

2. Place bearing/hub assembly into center hole of

wheel half. Make sure legs of hub are positioned over flange of hole.

3. Place other wheel half onto bearing/hub

assembly aligning wheel and tire lugs and mounting holes.

4. Using (2) 1/4—20 x 1.50” lg. fully threaded

screws or bolts and non–locking nuts, loosely secure wheel halves together. Mount screws or bolts in opposing holes.

Storage

1. For long term storage, either drain gasoline from fuel tank or add a fuel stabilizer to the gasoline. To drain gasoline, refer to Draining Gasoline, page 14. After fuel is drained, start engine and let it idle until all fuel is consumed and engine stops. Repeat the starting procedure two more times to ensure all gas is removed from the engine. If gasoline is not drained, gum–like varnish deposits will form and cause poor engine operation, even starting problems.

5. Check alignment of all parts and tighten screws,

alternating from side to side for a uniform fit, until wheel halves are drawn together.

6. Install (2) capscrews and locknuts, previously

removed, in remaining holes in wheel halves and tighten. Remove (2) long screws or bolts and replace with (2) capscrews and locknuts.

7. Reinstall wheel to pivot arm with capscrews,

spacer, and locknut. Make sure spacer is positioned between wheel hub and pivot arm.

Fuel Filter

Replacing the Fuel Filter

Replace the fuel filter after every 100 operating hours or yearly, whichever occurs first. The best time to replace the fuel filter (Fig. 31) is when the fuel tank is empty. Never install a dirty filter if it is removed from the fuel line.

1. Squeeze the ends of the hose clamps together

and slide them away from the filter (Fig. 31).

Note: If engine is operating on oxygenated or

reformulated gasoline (gasoline blended with an alcohol or an ether), remove all fuel from tank and run engine until it stops from lack of fuel before storing.

Fuel can be left in gas tank only if a fuel additive, such as Toro’s Stabilizer/Conditioner, is added to gasoline and run through engine before storing. Toro’s Stabilizer/Conditioner is a petroleum distillate based conditioner/stabilizer. Toro does not recommend stabilizers with an alcohol base, such as ethanol, methanol or isopropyl. Use fuel additive in recommended quantities as specified on container.

Under normal conditions, fuel additives remain effective in fuel for 6–8 months.

2. Drain oil: refer to Changing Crankcase Oil, page 14. After oil is drained, do not fill crankcase with oil until the following steps (3–11) are completed.

3. Remove spark plug and pour 2 tablespoons of SAE 30 oil into hole in cylinder. Pull starter rope slowly to coat inside of cylinder. Install spark plug and tighten to 14 ft–lb (19 Nm). DO NOT

REINSTALL WIRE ON SPARK PLUG.

2. Remove the filter from the fuel lines.

3. Install a new filter and move the hose clamps

close to the filter.

4. Clean mower housing: refer to Cleaning Mower, page 17.

5. Clean BBC shield: refer to Cleaning Blade Brake Clutch Shield, page 18.

GB–19

6. Clean dirt and chaff from cylinder, cylinder head

fins, and blower housing. Also remove grass clippings, dirt, and grime from external parts of the engine, shrouding, and top of mower housing.

13. Store mower in a clean, dry place, out of the

reach of children. Cover mower to keep it clean and protected.

7. Check condition of blade: refer to

Inspecting/Removing/Sharpening Blade, page 15.

8. Tighten all nuts, bolts, and screws.

9. Clean air cleaner: refer to Servicing Air Cleaner,

page 13.

10. Lubricate the pivot arms: refer to Lubrication,

page 16.

11. Touch up all rusted or chipped paint surfaces.

Toro Re–Kote paint is available from an Authorized TORO Service Dealer.

12. Fill crankcase with oil: refer to Fill Crankcase

With Oil, page 8.

Accessories

For special conditions, the following accessories may be purchased at your local Authorized Toro Service Dealer.

1. Side Discharge Kit, Model No. 59113—Installs

in seconds. Rear mounted in place of the grass bag or discharge tunnel plug. Disperses clippings while trimming on both sides (Fig. 35).

2. Spark Arrestor and Screw (Part No. 94–1681)—If a spark arrestor is required

because of local, state, or federal regulations, it may be purchased at your local Authorized TORO Service Dealer. Clean screen after every 75 hours of operation. If mower is operated on any California forest, brush, or grass covered land without a properly operating spark arrestor, the operator is violating state law, Section 4442 Public Resources Code.

GB–20

Toro 22157 Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual