Toro 51952 User manual

Trimmer/Brushcutter
Model No. 51952—260000001 & Up
Model No. 51972—260000001 & Up
Model No. 51992—260000001 & Up
English (EN), French (FR), and Spanish (ES)
WARNING:
To reduce the risk of injury, the user must read and understand the operator’s manual. Save this manual.
Form No. 3354-724 Rev. A

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READ THIS INFORMATION
Before you use your new trimmer/brushcutter, read the following help-
ful hints to get you started.
Fueling
DANGER:
Gasoline is extremely ammable and explosive. A
re or explosion from gasoline will burn you and
others.
1. Obtain a clean container that is approved for use with gasoline.
2. Mix all of the 2-cycle oil provided with 1 US gallon of 87-octane, unleaded
gasoline (50:1).
3. Fill the trimmer’s gas tank carefully.
Cold Starting vs. Warm Starting
When you restart the trimmer/brushcutter and you are not sure whether the engine is still warm, set
the choke lever to B (Choke Open) and pull the starter cord. If the engine does not start within 5
pulls, refer to “To Start a Cold Engine” later in this manual.
Flooded Engine
Will the engine start? If not, it may be ooded. Relax, this is easy to correct. Set the choke lever to
B (Choke Open). Squeeze the trigger and pull the starter cord quickly for 10 to 12 pulls.
If the engine does not start, refer to “Troubleshooting” later in this manual or call toll-free at
1-866-574-9242 (US) or 1-866-574-9243 (Canada).
WARNING: The engine exhaust from this product contains chemicals known to the State
of California to cause cancer, birth defects, or other reproductive harm.
Printed in USA
All rights reserved

1-866-574-9242
CALL
For questions concerning your
trimmer/brushcutter, call us toll free at
1-866-574-9242.

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Table of Contents
Introduction...................................................................................................................................................................................4
Safety Rules .............................................................................................................................................................................. 5-6
Symbols .................................................................................................................................................................................... 6-7
Product Labels ..............................................................................................................................................................................8
Features....................................................................................................................................................................................9-11
Product Specications ...........................................................................................................................................................9
Assembly............................................................................................................................................................................... 13-16
Unpacking............................................................................................................................................................................12
Connecting the Attachment to the Upper Shaft ...................................................................................................................13
Removing the Attachment from the Upper Shaft ................................................................................................................13
Attaching the Front Handle..................................................................................................................................................13
Attaching the Shoulder Strap...............................................................................................................................................13
Attaching the Grass Deector..............................................................................................................................................13
Converting from Brushcutter to Trimmer............................................................................................................................15
Converting from Trimmer to Brushcutter............................................................................................................................16
Operation.....................................................................................................................................................................................17
Applications.........................................................................................................................................................................17
Mixing the Fuel....................................................................................................................................................................17
Filling the Tank....................................................................................................................................................................17
Starting the Product .............................................................................................................................................................18
Stopping the Product............................................................................................................................................................18
Operating the Trimmer ........................................................................................................................................................19
Operating the Brushcutter....................................................................................................................................................20
Maintenance................................................................................................................................................................................21
Emissions Maintenance Schedule........................................................................................................................................21
Cleaning the Product............................................................................................................................................................21
Servicing the Product...........................................................................................................................................................21
Replacing the Cutting Line............................................................................................................................................ 21-22
Replacing the Spool.............................................................................................................................................................22
Checking the Fuel Cap.........................................................................................................................................................23
Cleaning the Air Filter .........................................................................................................................................................23
Replacing the Spark Arrester...............................................................................................................................................23
Replacing the Spark Plug.....................................................................................................................................................24
Storing the Product ..............................................................................................................................................................24
Transporting the Product......................................................................................................................................................24
Troubleshooting ..........................................................................................................................................................................25
Warranty................................................................................................................................................................................ 26-27
Table of Contents

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Introduction
Thank you for purchasing a Toro product.
We would like for you to be completely satisfied with your new product, so feel free to contact an authorized service dealer
for help with service, genuine Toro parts, or other information you may require.
Whenever you contact an authorized service dealer, always know the model and serial numbers of the product. These num-
bers will help the service representative provide exact information about your specific product. You will find the model and
serial number decal located on the motor housing.
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 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. DANGER, WARNING, and CAUTION are signal words that identify the level of hazard.
However, regardless of the hazard, be extremely careful. Two other words, “Important” and “Note,” highlight information.
Signal Word Explanation
DANGER Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in minor
or moderate injury. It may also be used to alert against unsafe practices that may cause
property damage.
Important Advises you of important information or instructions vital to the operation or maintenance
of the equipment.
Note Advises you of additional information concerning the operation or maintenance of the
equipment.
Introduction

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This product has been designed and manufactured to
meet or exceed the requirements of the current version of
ANSI B175.3, safety requirements for gasoline-powered
string trimmers and brushcutters.
■ Physical Condition of the Operator. Do not operate
this product when tired, ill, or under the inuence of
alcohol, drugs, or medication.
■ Clothing Requirements. Always wear long heavy
pants, boots, and gloves. Do not wear loose cloth-
ing, jewelry, short pants, sandals, or go barefoot.
Secure hair so that it is above shoulder level to avoid
entanglement in moving parts.
■ Protective Accessories Requirements. Wear eye
protection marked to comply with ANSI Z87.1
standards when operating this product. Wear hearing
protection during extended periods of operation.
■ Condition of Trimmer Before Use. Inspect the
product before each use. Replace damaged parts.
Check for fuel leaks. Make sure all fasteners are
in place and secure. Replace cutting attachment
parts that are cracked, chipped, or damaged in any
way. Make sure the cutting attachment is properly
installed and securely fastened. Be sure the cutting
attachment shield is properly attached, and in the
position recommended by the manufacturer. Use
only exible, non-metallic line recommended by the
manufacturer. For example, never use wire or wire-
rope, which can break off and become a dangerous
projectile.
■ Proper Stance. Keep rm footing and balance. Do
not overreach. Keep the cutting attachment below
waist level. Keep all parts of your body away from
the rotating cutting attachment and hot surfaces.
■ Exhaust Gases. Never start or run the product inside
a closed room or building; breathing exhaust fumes
can cause illness or death.
■ Fueling. Mix and pour fuel outdoors where there are
no sparks and ames. Slowly remove the fuel cap
only after stopping the engine. Do not smoke while
fueling or mixing fuel. Wipe spilled fuel from the
product. Move at least 30 ft. (9 m) away from the
fueling source and site before starting the engine.
■ Work Area. Clear the area to be cut before each
use. Remove all objects, such as rocks, broken glass,
nails, wire, or string, that can be thrown or become
Safety Rules
WARNING:
Read and understand all instructions. Failure to follow all instructions may result in serious personal injury
as well as damage to the product.
entangled in the cutting attachment. Clear the area
of children, bystanders, and pets. At a minimum,
keep all children, bystanders, and pets outside a 50
ft. (15 m) radius. Because there still may be a risk of
injury to bystanders from thrown objects, bystanders
should be encouraged to wear eye protection. If you
are approached while operating the product, stop the
engine and the cutting attachment.
■ Dangerous Environments. To avoid falling, do not
use the product in damp or wet locations.
■ Controlling the Product. During carburetor adjust-
ments the cutting attachment may spin. Therefore,
you should wear protective equipment and observe
all safety instructions when adjusting the carbure-
tor. For products equipped with a clutch, be sure the
cutting attachment stops turning when the engine
idles. When the product is turned off, make sure the
cutting attachment has stopped before setting down
the product.
■ Use the Right Product. Use the product for the
intended purpose only.
■ Condition of Brushcutter Before Use. The handles
shall be mounted according to the manufacturer’s
instructions. Do not attach any blade to a product
without proper installation of all required parts. Fail-
ure to use the proper parts can cause the blade to y
off and seriously injure the operator and/or bystand-
ers. Discard blades that are bent, warped, cracked,
broken, or damaged in any way.
■ Use the Right Equipment. Always use the barrier
bar on the front handle and the shoulder strap with
the brushcutter.
■ Blade Thrust. Blade thrust may occur when the
spinning blade contacts an object that it does not im-
mediately cut. A blade thrust can be violent enough
to cause the product and/or operator to be propelled
in any direction, and possibly lose control of the
product. Blade thrust can occur without warning if
the blade snags, stalls, or binds. This is more likely
to occur in areas where it is difcult to see the mate-
rial being cut.
■ Stopping the Product. A coasting blade can cause
injury while it continues to spin after the engine is
stopped or throttle is released. Maintain proper con-
trol until the blade has completely stopped rotating.
Safety Rules

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Symbols
This engine is equipped with a spark arrester mufer. It is a violation of California Public Resource Code Section
4442 to use or operate this engine without a spark arrester mufer on any forest-covered, brush-covered, or grass-
covered land. Other states or federal areas may have similar laws.
This spark ignition system complies with Canadian ICES-002.
Save these instructions. Refer to them frequently and use them to instruct others who may use this product. If you
loan someone this product, loan these instructions also.
Symbols
The following symbols are located on the product. Please study them and learn their meaning. Proper interpretation of these
symbols allows you to operate the product better and safer.
Symbol Name Explanation
Safety Alert Symbol Precautions that involve your safety.
Read the Operator’s Manual Read the operator’s manual before starting or operating this product.
Failure to follow operating instructions and safety precautions in the
operator’s manual can result in serious injury.
Wear Eye and Hearing Protection Wear eye protection which is marked to comply with ANSI Z87.1 as
well as hearing protection when operating this equipment.
Keep Bystanders Away Keep all bystanders at least 50 feet (15 m) away.
Ricochet Thrown objects can ricochet and result in personal injury or property
damage.
No Blade Do not install or use any type of blade on a product displaying this
symbol.
Blade Thrust Beware of blade thrust. Products authorized for blade use will
display this symbol to warn of blade thrust.
Gasoline and Oil Use unleaded gasoline intended for motor vehicle use with an octane
rating of 87 [(R + M) / 2] or higher. This product is powered by a
2-cycle engine and requires pre-mixing gasoline and 2-cycle oil.
Safety Rules

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Symbols
The following signal words and meanings are intended to explain the levels of risk associated with
this product.
SYMBOL SIGNAL MEANING
DANGER: Indicates an imminently hazardous situation, which, if not avoided, will
result in death or serious injury.
WARNING: Indicates a potentially hazardous situation, which, if not avoided, could result
in death or serious injury.
CAUTION: Indicates a potentially hazardous situation, which, if not avoided, may result
in minor or moderate injury.
CAUTION: (Without Safety Alert Symbol) Indicates a situation that may result in property
damage.
Symbols
SERVICE
Servicing requires extreme care and knowledge and should
be performed only by a qualied service technician. For
service we suggest you return the product to your nearest
AUTHORIZED SERVICE CENTER for repair. When
servicing, use only identical replacement parts.
WARNING:
To avoid serious personal injury, do not attempt
to use this product until you read thoroughly and
understand completely the operator’s manual. Save
this operator’s manual and review frequently for
continuing safe operation and instructing others who
may use this product.
The operation of any power tool can result in foreign objects being thrown into your
eyes, which can result in severe eye damage. Before beginning power tool operation,
always wear safety goggles or safety glasses with side shields and a full face shield when
needed. We recommend Wide Vision Safety Mask for use over eyeglasses or standard
safety glasses with side shields. Always use eye protection which is marked to comply
with ANSI Z87.1.
WARNING:
SAVE THESE INSTRUCTIONS

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Product Labels
Product labels and instructions are easily visible to the operator and are located near any area of potential danger.
Replace damaged or lost labels.
Part No. 940627032 (Shoulder Strap)
Part No. 940686004
Part No. 940230129 Part No. 940657004
Part No. 940627017
Product Labels
50' 15m
50' 15m
OFF ON
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Features
Product Specifications
Name Specification
Engine 25.4 cc Full Crank
Cutting Width
Model No. 51952 17 in.
Model No. 51972 18 in.
Model No. 51992 8 in. for brushcutter, 18 in. for trimmer
Line Size .095 in.
Weight
Model No. 51952 12-1/2 lbs.
Model No. 51972 13-1/2 lbs.
Model No. 51992 13-1/2 lbs.
Specifications

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Features
Know Your Trimmer/Brushcutter
See Figure 1.
Before attempting to use this product, familiarize yourself
with all operating features and safety rules.
Common Features
Engine
The engine is powerful and easy to start. It is effectively
counterbalanced, which allows for less vibration and more
durability.
Dual Line
The dual line permits more efcient cutting than a single
line.
Grass Deflector
The grass deector helps protect you from ying debris.
Ergonomic Design
The design of the product provides for easy handling. It is
designed for comfort and ease of grasp when operating in
different positions and at different angles.
Curved Shaft Trimmer Feature
(Model No. 51952)
Grass Barrier
The grass barrier keeps grass from getting wrapped around
the drive shaft.
Brushcutter Features
(Model No. 51992)
Blade
The Tri-Arc® blade allows you to brushcut weeds, vines
and light brush.
Brushcutter Guard
The brushcutter guard helps protect you from the blade and
from ying debris.
Shoulder Strap
The brushcutter includes a shoulder strap that helps support
the product.
Barrier Bar
The handle on the brushcutter contains a barrier bar that
restrains the operator in position and maintains a proper
distance between the operator and the blade.
Features