Toro 20833 Operator's Manual
48 cm Rear Bagging
Walk Power Lawn Mower
Model No. 20833—Serial No. 230000001 and Up
Form No. 3328-942
Operator ’s Manual
Original Instructions (GB)
This spark ignition system complies with Canadian
ICES-002.
Ce système d’allumage par étincelle de véhicule est
conforme à la norme NMB-002 du Canada.
Page
Preparing the Engine 18. . . . . . . . . . . . . . . . . . . . . .
General Information 18. . . . . . . . . . . . . . . . . . . . . . .
Removing From Storage 18. . . . . . . . . . . . . . . . . . .
Troubleshooting 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents
Introduction 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Lawn Mower Safety 3. . . . . . . . . . . . . . . .
Sound Pressure 5. . . . . . . . . . . . . . . . . . . . . . . . . . .
Sound Power 5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vibration 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety and Instruction Decals 5. . . . . . . . . . . . . . . .
Setup 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Handle 6. . . . . . . . . . . . . . . . . . . . . .
Installing the Starter Rope 6. . . . . . . . . . . . . . . . . .
Adjusting the Handle Height 6. . . . . . . . . . . . . . . .
Assembling the Grass Bag 7. . . . . . . . . . . . . . . . . .
Before Starting 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filling the Crankcase with Oil 7. . . . . . . . . . . . . . .
Filling the Fuel Tank with Gasoline 7. . . . . . . . . . .
Reviewing the Maintenance Schedule 8. . . . . . . . .
Operation 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting the Engine 9. . . . . . . . . . . . . . . . . . . . . . . .
Stopping the Engine 9. . . . . . . . . . . . . . . . . . . . . . .
Using the Self-propel Drive 9. . . . . . . . . . . . . . . . .
Adjusting the Cutting Height 9. . . . . . . . . . . . . . . .
Using the Grass Bag 10. . . . . . . . . . . . . . . . . . . . . . .
Rear Discharge 10. . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Tips 11. . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Maintenance Schedule 12. . . . . . . . .
Checking the Engine Oil Level 12. . . . . . . . . . . . . .
Cleaning under the Housing 12. . . . . . . . . . . . . . . . .
Replacing the Air Filter 13. . . . . . . . . . . . . . . . . . . .
Servicing the Spark Plug 13. . . . . . . . . . . . . . . . . . .
Adjusting the Self-propel Drive Cable 14. . . . . . . . .
Lubricating the Self-propel Drive 14. . . . . . . . . . . .
Changing the Engine Oil 14. . . . . . . . . . . . . . . . . . .
Maintaining the Blade 15. . . . . . . . . . . . . . . . . . . . .
Cleaning under the Belt Cover 17. . . . . . . . . . . . . . .
Cleaning the Cooling System 17. . . . . . . . . . . . . . . .
Emptying the Fuel Tank 17. . . . . . . . . . . . . . . . . . . .
Folding the Handle 17. . . . . . . . . . . . . . . . . . . . . . . .
Storage 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparing the Fuel System 18. . . . . . . . . . . . . . . . . .
2002 by The Toro Company
8111 Lyndale Avenue South
Bloomington, MN 55420-1196
Page
Introduction
Read this manual carefully to learn how to operate and
maintain your product properly. The information in this
manual can help you and others avoid injury and product
damage. Although Toro designs and produces safe
products, you are responsible for operating the product
properly and safely.
Whenever you need service, genuine Toro parts, or
additional information, contact an Authorized Service
Dealer or Toro Customer Service and have the model and
serial numbers of your product ready. Figure 1 illustrates
the location of the model and serial numbers on the
product.
2
1
Figure 1
1. Location of the model and serial numbers
2. Rear door
Write the product model and serial numbers in the space
below:
Model No.
Serial No.
This manual identifies potential hazards and has special
safety messages that help you and others avoid personal
injury and even death. 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 you do not follow the recommended
precautions.
Warning signals a hazard that may cause serious injury or
death if you do not follow the recommended precautions.
Caution signals a hazard that may cause minor or moderate
injury if you do not follow the recommended precautions.
2
m4787
All Rights Reserved
Printed in the USA
This manual uses 2 other words to highlight information.
Important calls attention to special mechanical
information and Note: emphasizes general information
worthy of special attention.
Safety
• Never mow while people (especially children) or pets
are nearby. Stop the lawn mower if anyone enters the
area.
• Tragic accidents can occur if the operator is not alert to
the presence of children. Children are often attracted to
the lawn mower and the mowing activity. Never assume
that children will remain where you last saw them.
Toro designed and tested this lawn mower to offer
reasonably safe service; however, failure to comply with
the following instructions may result in personal injury.
Warning
Engine exhaust contains carbon monoxide, an
odorless, deadly poison that can kill you.
Do not run the engine indoors or in an enclosed
area.
To ensure maximum safety, best performance, and to
gain knowledge of the product, it is essential that you
and any other operator of the lawn mower read and
understand the contents of this manual before operating
the lawn mower.
This is the safety alert symbol. It is used to alert you
to potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible
injury or death.
Improperly using or maintaining this lawn mower can
result in injury. To reduce the potential for injury,
comply with these safety instructions.
General Lawn Mower Safety
The following instructions have been adapted from the
ANSI/OPEI standard B71.1—1998 and ISO standard
5395:1990(E). Information or terminology specific to Toro
lawn mowers is enclosed in parenthesis.
This lawn mower is capable of amputating hands and feet
and of throwing objects. Failure to observe the following
safety instructions could result in serious injury or death.
Training
• Read this operator’s manual carefully. Be thoroughly
familiar with the controls and the proper use of the lawn
mower before starting it.
• Never allow children to operate the lawn mower. Local
regulations may restrict the age of the operator.
• Never allow adults unfamiliar with these instructions to
operate the lawn mower.
• Keep children out of the mowing area and under the
watchful care of a responsible adult.
• Be alert and turn the lawn mower off if children enter
the area.
• Use extra care when approaching blind corners, shrubs,
trees, or other objects that may obscure vision.
• Keep in mind that the operator or user is responsible for
accidents or hazards occurring to other people or their
property.
• See the manufacturer’s instructions for proper operation
and installation of accessories. Use only the accessories
that are approved by the manufacturer.
Preparation
• Thoroughly inspect the area where you will use the
lawn mower, and remove all stones, sticks, wires,
bones, and other foreign objects.
• While mowing, always wear substantial footwear and
long trousers.
• Do not operate the lawn mower when barefoot or
wearing open sandals.
• Always wear safety goggles or safety glasses with side
shields when operating the lawn mower.
• Warning: Gasoline is highly flammable. Take the
following precautions:
– 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 gasoline while the
engine is running or when the engine is hot.
– If gasoline is spilled, do not attempt to start the
engine. Move the lawn mower away from the area
of spillage to avoid creating any source of ignition
until the gasoline vapors have dissipated.
– Replace all fuel tank and container caps securely.
– If you must drain the fuel from the fuel tank, do it
outdoors.
• Replace faulty mufflers.
3
• Before using, always visually inspect the blades, blade
bolts, and cutter assembly for wear or damage. Replace
worn or damaged blades and bolts in sets to preserve
balance.
• On multibladed lawn mowers, use care as rotating one
blade can cause the other blades to rotate.
– before clearing blockages or unclogging the chute;
– before checking, cleaning, or working on the lawn
mower;
– after striking a foreign object. Inspect the lawn
mower for damage and make repairs before starting
and operating the lawn mower; and
Operation
• Do not operate the engine in a confined space where
dangerous carbon monoxide fumes can collect.
• Mow only in daylight or in good artificial light.
• Always be sure of your footing on slopes.
• Walk; never run.
• Keep a firm hold on the handle.
• For wheeled rotary lawn mowers, mow across the face
of slopes, never up and down.
• Exercise extreme caution when changing the direction
on slopes.
• Do not mow excessively steep slopes.
• Use extreme caution when reversing or pulling the lawn
mower toward you.
• Before and while moving backward, look behind and
down for small children.
• Stop the blade(s) if you must tilt the lawn mower for
transportation when crossing surfaces other than grass
and when transporting the lawn mower to and from the
area to be mowed.
• Never operate the lawn mower with damaged or
missing guards or shields, or without safety devices
(such as deflectors and grass catchers) in place.
• Do not change the speed settings on the engine.
• Disengage all blade and drive clutches before starting
the engine.
• Start the engine carefully according to instructions and
with feet well away from the blade(s).
• Do not tilt the lawn mower when starting the engine,
unless you must tilt the lawn mower to start it. In this
case, do not tilt it more than absolutely necessary and
lift only the part which is away from the operator.
• Do not start the engine when standing in front of the
discharge chute.
• Do not put your hands or feet near or under rotating
parts. Keep clear of the discharge opening at all times.
• Never pick up or carry a lawn mower while the engine
is running.
• Stop the engine and disconnect the spark-plug wire:
– if the lawn mower starts to vibrate abnormally
(check it immediately).
• Stop the engine:
– whenever you leave the lawn mower; and
– before refuelling.
• Reduce the throttle setting during engine run-out and, if
the engine has a shutoff valve, turn the fuel off after
mowing.
• Stop the blade(s) when crossing gravel drives, walks, or
roads.
• Shut the engine off and wait until the blade comes to a
complete stop before removing the grass catcher.
• Do not operate the lawn mower while under the
influence of alcohol or drugs.
• If the lawn mower should start to vibrate abnormally,
stop the engine and check immediately for the cause.
Vibration is generally a warning of trouble.
Slopes are a major factor related to slip and fall accidents
which can result in a severe injury. If you feel uneasy on a
slope, do not mow it.
• Watch for holes, ruts, or bumps. Tall grass can hide
obstacles.
• Do not mow near drop-offs, ditches, or embankments.
You could lose your footing or balance.
• Do not mow on wet grass. Reduced footing could cause
slipping.
Maintenance and Storage
• Keep all nuts, bolts (especially blade attachment bolts),
and screws tight to ensure that the lawn mower is in
safe working condition.
• Never store the lawn mower with gasoline in the tank
inside a building where fumes may reach an open flame
or spark.
• Allow the engine to cool before storing the lawn mower
in any enclosure.
• To reduce the fire hazard, keep the engine, muffler,
battery compartment, and gasoline storage area free of
grass, leaves, or excessive grease.
• Check the grass catcher frequently for wear or
deterioration.
4
• Replace worn or damaged parts.
• Use extra care when handling gasoline; gasoline vapors
are explosive.
• Never tamper with safety devices. Check their proper
operation regularly.
• Keep the lawn mower free of grass, leaves, or other
debris buildup. Clean up any oil or fuel that spills.
• Stop and inspect the lawn mower if you strike an object.
Repair the lawn mower, if necessary, before starting the
engine.
• To ensure the best performance and safety, purchase
only genuine Toro replacement parts and accessories.
• Maintain or replace safety and instruction decals when
necessary.
Sound Pressure
This unit has a maximum sound pressure level at the
operator’s ear of 84 dBA, based on measurements of
identical machines per Directive 98/37/EC.
• Never attempt to make wheel height adjustments while
the engine is running.
• Grass catcher components are subject to wear, damage,
and deterioration, which could expose moving parts or
allow objects to be thrown. Frequently check the
components and replace them with the manufacturer’s
recommended parts when necessary.
• Lawn mower blades are sharp and can cut. Wrap the
blade(s) or wear gloves, and use extra caution when
servicing them.
• Do not change the speed settings on the engine.
• If you must drain the fuel from the fuel tank, do it
outdoors.
Safety and Instruction Decals
Safety decals and instructions are easily visible to the operator and are located near any area
of potential danger. Replace any decal that is damaged or lost.
Sound Power
This unit has a guaranteed sound power level of 96 dBA,
based on measurements of identical machines per Directive
2000/14/EC.
Vibration
This unit does not exceed a hand/arm vibration level of
7.4 m/s2, based on measurements of identical machines per
Directive 98/37/EC.
93-4105
1. Warning—read the
2. Thrown object hazard—keep bystanders a safe distance from
the machine.
3. Thrown object hazard, mower—keep the deflector in place.
4. Cutting/dismemberment hazard of hand or foot, mower
blade—stay away from moving parts.
5. Warning—stop the engine before leaving the machine.
Operator’s Manual.
100-4355
1. Cutting height settings
5
Setup
Note: Determine the left and right sides of the machine
from the normal operating position.
Note: Ensure that the cables and the electrical jacket are
routed as illustrated in Figure 3.
1
Installing the Handle
Warning
Folding or unfolding the handle improperly can
pinch, stretch, or damage one or more of the
cables. Any pinched, stretched, or damaged cable
may cause an operational failure that results in an
unsafe operating condition.
• Do not pinch, stretch, or damage the cables.
• Handle the cables with care when folding or
unfolding the handle.
• Do not use the lawn mower if one or more of the
cables are pinched, stretched, or damaged.
Contact an Authorized Service Dealer.
1. Lay the upper handle on the ground behind the lawn
mower with the handle label facing up.
2. Loosen the handle height adjustment knobs and rotate
the lower handle rearward until it seats into one of the
handle height settings as shown in Figure 2.
Note: To set the handle height, refer to Adjusting the
Handle Height on page 6.
2
m4842
Figure 3
1. Cables 2. Electrical jacket
Installing the Starter Rope
Pull the starter rope through the rope guide on the handle
(Fig. 4).
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1
210
1
5
2
1. Handle knob (2)
2. Upper handle section
3. Oval-head bolt (2)
3. Remove the handle knobs and the oval-head bolts from
the upper handle section.
4. Install the upper handle section onto the lower handle
section with the oval-head bolts and the handle knobs as
shown in Figure 2. Tighten the handle knobs securely.
3
Figure 2
4. Lower handle section
5. Handle height adjustment
4
knob (2)
m4794
Figure 4
1. Rope guide 2. Starter rope
Adjusting the Handle Height
You can set the handle to 3 height settings: high, medium,
and low (Fig. 2). Select the handle height setting most
comfortable for you.
1. Loosen the handle height adjustment knobs.
2. Set the handle to the desired position.
3. Tighten the handle height adjustment knobs.
6
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