Toro 51930B, 51934B, 51932B Operator's Manual

Trimmer/Brushcutter

Model No. 51950—250000001 & Up Model No. 51970—250000001 & Up Model No. 51990—250000001 & Up Model No. 51951—250000001 & Up Model No. 51971—250000001 & Up Model No. 51991—250000001 & Up Model No. 51930B—240000001 & Up Model No. 51932B—240000001 & Up Model No. 51934B—240000001 & Up

Form No. 3351-920

Operator’s Manual

WARNING:

To reduce the risk of injury, the user must read and understand the operator’s manual. Save this manual.

English (EN), French (F), and Spanish (ES)

READ THIS INFORMATION



1-866-574-9242

CALL

Before you use your new trimmer/brushcutter, read the following helpful 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.

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).

For questions concerning your trimmer/brushcutter, call us toll free at 1-866-574-9242.

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

Table of Contents

Introduction...................................................................................................................................................................................4

Safety Rules ..................................................................................................................................................................................5

Symbols .................................................................................................................................................................................... 6-7

Product Labels ..............................................................................................................................................................................8

Specications ................................................................................................................................................................................9

Applications ..................................................................................................................................................................................9

Features..................................................................................................................................................................................10-11

Unpacking...................................................................................................................................................................................12

Assembly............................................................................................................................................................................... 13-16

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

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

Cleaning 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

Introduction

Thank you for purchasing a Toro product. We would like for you to be completely satised 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 specic product. You will nd 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-theart 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 identies 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

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.

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 clothing, 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 wirerope, 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

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 carburetor. 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. Failure to use the proper parts can cause the blade to y off and seriously injure the operator and/or bystanders. 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 immediately 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 material 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 control until the blade has completely stopped rotating.

Safety Rules

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 grasscovered 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.

Richochet Thrown objects can richochet and result in personal injury or

property damage.

No Blade Do not install or ues 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.

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.

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:

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.

SAVE THESE INSTRUCTIONS

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.

Symbols

Product Labels

50' 15m

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. 983647-001 Part No. 983648-001

Part No. 984032-001 Part No. 985102-001

Part No. 984105-001 Part No. 984240-001

OFF ON

Part No. 983780-001

Part No. 983961-001 (Shoulder Strap)

CHOKE CLOSED

CHOKE OPEN

Product Labels

Specifications

Name Specification

Engine 25.4 cc Full Crank

Durability 300 hours

Cutting Width

Model Nos. 51930B, 51950 & 51951 17 in.

Model Nos. 51932B, 51970 & 51971 18 in.

Model Nos. 51934B, 51990 & 51991 8 in. for brushcutter, 18 in. for trimmer

Line Size .095 in.

Weight

Model Nos. 51930B, 51950 & 51951 12-1/2 lbs.

Model Nos. 51932B, 51970 & 51971 13-1/2 lbs.

Model Nos. 51934B, 51990 & 51991 13-1/2 lbs.

Applications

Use this product for the following applications:

■ Cutting grass, weeds, and light undergrowth (all models)

■ Edging along sidewalks and driveways (all models)

■ Cutting pulpy weeds, vines, and light brush (Model Nos. 51934B, 51990 & 51991)

Specifications

Features

Before using the product, familiarize yourself with all operating features and safety requirements. However, do not let familiarity with the product make you careless.

WARNING:

Exercise caution when using the product. Careless actions, for even a fraction of a second, can result in serious personal injury.

Your new product is equipped with the following features.

See Figure 1.

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.

Brushcutter Features

(Model Nos. 51934B, 51990 & 51991) 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.

WARNING:

Do not attempt to modify this product or create accessories not recommended for use with this product. Any such alteration or modication is misuse and could result in a hazardous condition leading to serious personal injury.

Curved Shaft Trimmer Feature

(Model Nos. 51930B, 51950 & 51951) Grass Barrier

The grass barrier keeps grass from getting wrapped around the drive shaft.

Features

Curved Shaft Trimmer

(Model Nos. 51930B, 51950 & 51951)

Dual

Line

Grass

Barrier

Straight Shaft

Grass Deflector

Front Handle

Curved Shaft

Grass Deflector

Engine

Trigger Handle

Straight Shaft Trimmer

(Model Nos. 51932B, 51970 & 51971)

Front Handle

Engine

Blade

Brushcutter

Guard

Brushcutter

(Model Nos. 51934B, 51990 & 51991)

Shoulder

Strap

Barrier

Bar

Trigger Handle

Front Handle

Engine

Trigger Handle

Figure 1

Features

Unpacking

Instructions

■ Carefully remove the product from the box.

■ Inspect the product carefully to make sure no breakage or damage occurred during shipping.

■ Do not discard the packing material until you have carefully inspected and satisfactorily operated the product.

■ If any parts are damaged or missing, please call toll free 1-800-860-4050 for assistance.

WARNING:

If any parts are missing, do not operate the product until the missing parts are replaced. Failure to do so could result in serious personal injury.

Packing List

Upper shaft (Power head) (1) Attachment shaft (Cutting head) (1) Handle (1) Curved shaft grass deector (1) (Model Nos. 51930B,

51950 & 51951) Straight shaft grass deector (1) (Model Nos. 51932B,

51970 & 51971 and Model Nos. 51934B, 51990 & 51991) Grass barrier (Model Nos. 51930B, 51950 & 51951) Hex head cap screw - 1/4-20 x 2 in. (1) (Model Nos. 51930B, 51950 & 51951) Lock washer (1) (Model Nos. 51930B, 51950 & 51951) Flat washer (1) (Model Nos. 51930B, 51950 & 51951) Wing nut (1) (Model Nos. 51930B, 51950 & 51951) Hex nut (Model Nos. 51930B, 51950 & 51951) Oil Head locking tool (1) (Model Nos. 51934B, 51990 &

51991) Shoulder strap (1) (Model Nos. 51934B, 51990 & 51991) Storage cap

Unpacking

Assembly

Connecting the Attachment to the Upper Shaft

See Figure 2.

Follow these steps to connect the attachment to the upper shaft.

1. Loosen the knob by turning it counterclockwise.

2. Remove the end cap from the attachment shaft.

3. Align the button on the attachment shaft with the guide

recess on the upper shaft.

4. Slide the attachment shaft into the upper shaft until the

attachment shaft clicks into place.

Note: You may need to turn the attachment shaft to

properly align the two shafts.

5. Tighten the knob securely by turning it clockwise.

Upper

Shaft

Guide

Recess

3. Place the handle along the upper shaft to a position that

allows for comfortable operation.

4. Place the handle support on the bottom of the tube on

the opposite side of the front handle.

5. Secure the handle with the slotted Torx™ screws.

Slotted

Torx

Screw

Handle

Support

Front

Handle

Trigger Handle

Barrier Bar

(Model Nos.

51934B, 51990 &

51991

Figure 3

Button

Knob

Attachment

Shaft

Figure 2

Removing the Attachment from the Upper Shaft

See Figure 2.

Follow these steps to remove the attachment from the upper shaft.

1. Loosen the knob by turning it counterclockwise.

2. Push the button while pulling out the attachment.

Attaching the Front Handle

See Figure 3.

Follow these steps to attach the front handle.

1. Remove the slotted Torx™ screws to separate the

handle from the handle support.

2. Press the handle onto the top of the upper shaft, no

less than 10 in. (25.4 cm) from the center of the trigger handle, angling the handle toward the trigger handle.

Attaching the Shoulder Strap

Model Nos. 51934B, 51990 & 51991

See Figure 4.

Follow these steps to attach the shoulder strap.

1. Connect the latch on the strap to the hanger bracket.

2. Adjust the strap to a comfortable position.

Note: To quickly release the product from the shoulder

strap, sharply pull the quick release tab.

Strap

Quick

Release

Tab

Hanger

Bracket

Latch

Figure 4

Assembly

Attaching the Grass Deflector

Attaching the grass deector differs depending on the type of trimmer: curved shaft or straight shaft.

WARNING:

The line cutting blade on the grass deector is sharp. Avoid contact with the blade. Failure to avoid contact can result in serious personal injury.

Note: To protect the operator, always be sure to attach the grass deector.

To Attach the Curved Shaft Grass Deflector Model Nos. 51930B, 51950 & 51951

See Figure 5.

Follow these steps to attach the curved shaft grass deector.

1. Press the grass deector onto the bottom of the curved shaft as shown.

2. Lift the grass barrier up slightly.

3. Insert the hex head cap screw through the grass deec-

tor, bracket, and grass barrier.

4. Place the at washer and lock washer on the hex head cap screw.

5. Place the wing nut or hex nut on the hex head cap screw and turn clockwise to secure.

3. Align the screw hole in the mounting bracket with the

screw hole in the grass deector.

4. Insert the slotted hex head screw through the mounting

bracket and into the grass deector.

5. Tighten the screw securely.

Tab

Straight Shaft

Grass Deflector

Slot

Figure 6

Wing

Nut

Curved Shaft

Grass Deflector

Bracket

Lock

Washer

Flat

Washer

Line

Cutting

Blade

Hex Head

Cap Screw

To Attach the Straight Shaft Grass Deflector Model Nos. 51932B, 51970 & 51971 and Model Nos. 51934B, 51990 & 51991

See Figure 6.

Follow these steps to attach the straight shaft grass deector.

1. Remove the slotted hex head screw from the grass

deector.

2. Insert the tab on the mounting bracket in the slot on the

grass deector.

Grass

Barrier

Hex

Nut

Figure 5

Assembly

Converting From Brushcutter To Trimmer

Model Nos. 51934B, 51990 & 51991

To convert from the brushcutter to the trimmer, remove the blade, remove the brushcutter guard, attach the grass deector, and install the trimmer head assembly.

To Remove the Blade and Brushcutter Guard

See Figure 7 and Figure 8.

Follow these steps to remove the blade and brushcutter guard.

1. Align the slot in the anged washer with the slot in the

gear head.

2. Place the head locking tool through the slot in the

anged washer and gear head.

3. Remove the blade nut by turning it clockwise (left-

handed threads).

4. Remove the cupped washer and the blade.

Head

Locking

Tool

Gear Head

Slot

Figure 7

Flanged

Washer

Blade

WARNING:

Be careful when handling the blade. It is sharp. Failure to heed this warning can result in serious personal injury.

5. Remove the anged washer from the gear shaft and

retain it for the trimmer head assembly installation.

6. Remove the three screws securing the brushcutter

guard.

7. Remove the brushcutter guard. Note: Store the brushcutter parts together for future

use.

To Attach the Grass Deflector

Refer to “To Attach the Straight Shaft Grass Deector” earlier in this manual.

To Install the Trimmer Head Assembly

See Figure 9.

Follow these steps to install the trimmer head assembly.

1. Align the slot in the anged washer with the slot in the

gear head.

2. Insert the head locking tool through the anged washer

and gear head.

3. Install the drive shaft and trimmer head assembly onto

the gear shaft by turning the drive shaft counterclockwise (left-handed threads).

4. Tighten the drive shaft securely.

Brushcutter

Guard

Gear

Head

Slot

Cupped

Washer

Flanged

Washer

Blade Nut

Drive Shaft

Figure 8

Trimmer

Head

Assembly

Figure 9

Assembly

Converting From Trimmer To Brushcutter

Model Nos. 51934B, 51990 & 51991

To convert from the trimmer to the brushcutter, remove the trimmer head assembly, remove the grass deector, attach the brushcutter guard, and install the blade.

To Remove the Trimmer Head Assembly and Grass Deflector

See Figures 10 and 11.

Follow these steps to remove the trimmer head assembly and grass deector.

1. Align the slot in the anged washer with the slot in the gear head.

2. Insert the head locking tool through the anged washer and gear head.

3. Remove the drive shaft and trimmer head assembly by turning the drive shaft clockwise (left-handed threads).

4. Remove the anged washer and retain it for the blade installation.

5. Remove the screw securing the grass deector.

6. Remove the grass deector.

Note: Store the trimmer head assembly parts together

for future use.

To Attach the Brushcutter Guard

See Figure 12.

Note: To protect the operator, always be sure to attach the brushcutter guard.

Follow these steps to attach the brushcutter guard.

1. Place the guard onto the gear head as shown.

2. Insert the three hex head screws from the bottom

through the guard into the gear head.

3. Tighten the screws securely and torque to 40-50 in.lb.

To Install the Blade

See Figure 13.

Follow these steps to install the blade.

1. Place anged washer over the gear shaft with the hollow side toward the brushcutter guard.

2. Center the blade on the anged washer, making sure the blade ts at and the raised hub goes through the hole in the blade.

3. Install the cupped washer with the raised center away from the blade.

4. Place the blade nut onto the gear shaft.

5. Insert the head locking tool through the anged washer

and gear head.

6. Install the blade nut by turning it counterclockwise (left-handed threads).

7. Tighten the blade nut and torque to 120 in.lb. minimum (nger tight plus 1/2 turn).

Gear

Head

Brushcutter

Head

Locking

Tool

Guard

Flanged

Washer

Slot

Straight Shaft

Grass Deflector

Gear Shaft

Flanged

Washer

Cupped

Washer

Drive Shaft

Gear Head

Hex Head

Screw

Figure 10

Trimmer

Head

Assembly

Figure 11

Figure 12

Blade

Blade Nut

Figure 13

Assembly

Operation

Mixing the Fuel

DANGER:

Gasoline is extremely ammable and explosive. A re or explosion from gasoline will burn you and others.

This product is powered by a 2-cycle engine and requires pre-mixing gasoline and 2-cycle oil. The oil mix should be 50:1, using oil that meets or exceeds JASO-FC specications.

Follow these steps to mix the fuel.

1. Obtain a clean container that is approved for use with

gasoline.

2. Mix the 2-cycle engine oil provided with unleaded

gasoline in the container, according to the instructions on the oil carton.

Important: This engine is certied to operate on unleaded gasoline intended for automotive use with an octane rating of 87 ([R + M] / 2) or higher. Do not use automotive oil or 2-cycle outboard oil. Store the container out of the reach of children.

50:1 Gasoline to Oil Mixing Chart

Gasoline Oil

1/2 US gallon 1.3 oz. 1 US gallon 2.6 oz. 2 US gallons 5.2 oz. 1 liter 20 ml 2 liters 40 ml 3 liters 60 ml 4 liters 80 ml 5 liters 100 ml

Filling the Tank

WARNING:

Always stop the engine before lling the tank. Never add fuel to a machine with a running or hot engine. Move at least 30 ft. (9 m) away from the refueling site before starting the engine. Do not smoke while lling the tank.

Follow these steps to ll the tank.

1. Clean the surface around the fuel cap to prevent con-

tamination.

2. Loosen the fuel cap by turning it counterclockwise.

3. Pour the fuel mixture carefully into the tank.

4. Clean and inspect the gasket. Note: Replace the fuel cap if the gasket is damaged.

5. Install the fuel cap and tighten it by turning it clock-

wise.

WARNING:

Check for fuel leaks. If you nd any leaks, correct the problem before using the product.

6. Wipe spilled fuel from the product.

7. Move at least 30 ft. (9 m) away before starting the

product.

Note: It is normal for the engine to emit smoke during

use.

+ =

Operation

WARNING:

The product may throw objects during operation, causing injury to the operator or to bystanders. Always wear suitable eye protection, long heavy pants, and boots while operating the product.

Starting the Product

See Figure 14a, Figure 14b, and Figure 15.

Starting the product differs depending on whether the engine is cold or warm. Refer to the label on the air lter cover.

To Start a Cold Engine

Follow these steps to start a cold engine.

1. Lay the product on a at, bare surface.

2. Toggle the switch to the I (ON) position.

3. Push the primer bulb approximately eight times.

4. Set the choke lever to A (Choke Closed).

5. Press the lock-off button and squeeze the trigger.

6. Pull the starter cord three times.

7. Set the choke lever to B (Choke Open).

8. Press the lock-off button and squeeze the trigger.

9. Pull the starter cord.

Note: If the product starts, let it run for 30 seconds

before using it. If the product does not start, repeat the previous steps.

Switch

Lock-off

Button

Set Choke to A

To Start a Warm Engine

Follow these steps to start a warm engine.

1. Lay the product on a at, bare surface.

2. Toggle the switch to the I (ON) position.

3. Push the primer bulb up to eight times.

4. Set the choke lever to B (Choke Open).

5. Do not squeeze the trigger.

6. Pull the starter cord.

Note: If the product does not start, repeat the previous

steps.

Stopping the Product

See Figure 15.

Follow these steps to stop the product. Release the trigger. Toggle the switch to the O (OFF) position.

Set Choke to B

Figure 14b

Trigger

Primer

Bulb

Starter

Cord

Figure 14a

Switch

Trigger

Figure 15

Operation

Operating the Trimmer

Operating the trimmer differs, depending on whether you are using the curved shaft trimmer or the straight shaft trimmer.

To Operate the Curved Shaft Trimmer (Model Nos. 51930B, 51950 & 51951)

See Figure 16a.

Follow these steps to operate the curved shaft trimmer.

1. Start the trimmer.

2. Hold the trimmer at waist level with your right hand

on the trigger handle and your left hand on the front handle.

3. Place the product on the right side of your body with

the engine behind and away from your body.

4. Trim grass and weeds in a right-to-left motion with the

line parallel to the ground.

Figure 16a

Figure 16b

To Advance the Cutting Line

See Figure 16c.

Follow these steps to advance the cutting line.

1. Start the trimmer.

2. Tap the retaining cap lightly on the ground while the

motor is running. The line will only advance with the engine at full throttle. Do not hold the retaining cap

on the ground.

Note: The line cutting blade on the grass deector will

cut the line to the proper length.

Note: To help prevent line tangle, tap only once to

lengthen the line. If additional line is required, wait a few seconds before retapping the retaining cap. Do not allow the line to wear too short. Keep the cutting line at full length.

To Operate the Straight Shaft Trimmer (Model Nos. 51932B, 51970 & 51971)

See Figure 16b.

Follow these steps to operate the straight shaft trimmer.

1. Start the trimmer.

2. Hold the trimmer at waist level with your right hand

on the trigger handle and your left hand on the front handle.

3. Place the product on the right side of your body with

the engine behind and away from your body.

4. Trim grass and weeds in a left-to-right motion with the

line parallel to the ground.

Operation

Retaining

Cap

Figure 16c

Operating the Brushcutter (Model Nos. 51934B, 51990 & 51991)

See Figure 17.

Follow these steps to operate the brushcutter.

1. Start the brushcutter.

2. Hold the brushcutter at waist level with your right hand

(arm extended) on the trigger handle and your left hand on the front handle.

3. Place the product on the right side of your body with the engine behind and away from your body.

4. Brushcut weeds and vines in a right-to-left motion with the blade parallel to the ground.

Dangerous

Cutting Area

Curved Shaft Trimmer

Direction of

Rotation

Best Cutting

Area

Figure 18

Straight Shaft Trimmer

Dangerous

Cutting Area

Figure 17

Cutting Tips

See Figures 18 and 19.

1. Keep the trimmer tilted toward the area being cut; this is the best cutting area.

2. The curved shaft trimmer cuts when passing the unit from right to left. the straight shaft trimmer cuts when passing the unit from left to right. This will avoid throwing debris at the operator. Avoid cutting in the dangerous area shown in gures 18 and 19.

3. Use the tip of string to do the cutting; do not force string head into uncut grass.

4. Wire and picket fences cause extra string wear, even breakage. Stone and brick walls, curbs and wood may wear string rapidly.

5. Avoid trees and shrubs. Tree bark, wood moldings, siding and fence posts can easily be damaged by the string.

Direction of

Rotation

Best Cutting

Area

Figure 19

Operation

Maintenance

Emissions Maintenance Schedule

Maintenance, replacement, or repair of the emission control device and systems may be performed by any nonroad engine repair establishment or individual.

Emission Part

Fuel Tank Assembly (Includes Fuel Lines, Fuel Cap, and Fuel Filter)

Air Filter Spark Arrester Spark Plug

Inspect before

each use

X X X

WARNING:

Use only Toro replacement parts when servicing this product. Use of any other parts may create a hazard or cause product damage.

Cleaning the Product

■ Stop the product before cleaning.

■ Clean the exterior of the product with a damp cloth.

■ Avoid using solvents when cleaning plastic parts. Most

plastics are susceptible to damage from various types of commercial solvents and may be damaged by their use.

■ Wipe or scrape the trimmer head and spool area when

they accumulate dirt or clippings.

■ Scrape debris away from air intake vents on both sides

of the motor housing.

CAUTION:

Keeping air intake vents free of grass and debris prevents motor overheating and possible failure.

Note: Depending on the type of fuel used, the type and

amount of oil used, and/or your operating conditions, the exhaust port and mufer may become blocked with carbon deposits. If you notice a power loss with your gas powered tool, you may need to remove these deposits to restore performance. We highly recommended that only qualied service technicians perform this service.

Servicing the Product

■ Check and tighten all fasteners. If any part is damaged

or lost, repair it or replace it.

Clean every

5 hours

Replace every 25

hours or yearly

Clean every 25

hours or yearly

Replacing the Cutting Line

See Figures 20 and 21.

WARNING:

Use of line other than the proper monolament cutting line could cause personal injury.

Follow these steps to replace the cutting line.

1. Stop the trimmer.

WARNING:

Make sure the trimmer head stops rotating. Contact with a rotating trimmer head could cause personal injury.

2. Remove the spark plug boot. See Figure 24.

3. Remove the retaining cap.

4. Remove the empty spool.

5. Clean the trimmer head thoroughly. Inspect the trimmer

head for any damaged or worn parts.

6. Hold the spool with the spring positioned upward.

7. Insert the end of the new line into the hole in the upper

threaded area of the spool.

8. Wind the line around the spool as indicated by the ar-

rows on the top of the spool until the line reaches the edge of the spool. Do not wind the line beyond the

edge of the inner ring.

9. Secure the line temporarily by pushing it into one of the

slotted tabs on the spool.

10. Measure six inches of line from the slotted tab and cut

the line at that point.

Maintenance

11. Repeat the process for the lower threaded area of the

spool, winding the line and securing it in the slotted tab opposite the rst secured line.

12. Insert the lines into the eyelets on the trimmer head.

13. Place the spool on the drive shaft.

Note: To install the spool, you may need to rotate it

slightly. If the line should tangle or break at the eyelet, remove the spool, refeed the line through the eyelets, and reassemble the spool on the trimmer.

14. Release the lines from the tabs by sharply pulling each line.

15. Push down on the spool to reveal the threads inside the drive shaft.

16. Thread the retaining cap on the drive shaft.

17. Secure the retaining cap.

WARNING:

An improperly installed retaining cap or spool could y off the trimmer. Contact with a thrown retaining cap or spool could cause personal injury.

18. Replace the spark plug boot. See Figure 24.

Inner Ring

Upper

Threaded Area

Follow these steps to replace the spool.

1. Stop the trimmer.

WARNING:

Make sure the trimmer head stops rotating when you release the trigger. Contact with a rotating trimmer head could cause personal injury.

2. Remove the spark plug boot. See Figure 24.

3. Remove the retaining cap by turning as indicated by the

arrow on the cap.

4. Remove the empty spool.

5. Clean the trimmer head thoroughly. Inspect the trimmer

head for any damaged or worn parts.

6. Remove the lines from the slotted tabs on the spool and

unwind approximately six inches.

7. Secure the lines temporarily by pushing them into the

slotted tabs on the spool.

8. Insert the lines of the new spool into the eyelets on the

trimmer head.

9. Place the spool on the drive shaft. Note: To install the spool, you may need to rotate it

slightly.

Note: If the line should tangle or break at the eyelet,

remove the spool, refeed the line through the eyelets, and reassemble the spool on the trimmer.

10. Release the lines from the tabs by sharply pulling each

line.

11. Push down on the spool to reveal the drive shaft.

12. Thread the retaining cap on the drive shaft.

13. Secure the retaining cap.

14. Replace the spark plug boot. See Figure 24.

Slotted

Tab

Lower

Threaded Area

Figure 20

Replacing the Spool

See Figure 21.

Note: For best performance, use only Toro spools (Part No. AR04118). The spool may wear during normal use of the line advance feature and may require occasional replacement. Replacement spools are available through your Toro retailer.

Drive Shaft

Eyelet

Trimmer

Head

Slotted

Tab

Retaining

Cap

Spool

Figure 21

Maintenance

Checking the Fuel Cap

WARNING:

A leaking fuel cap is a re hazard and must be replaced immediately.

The fuel cap contains a non-serviceable lter and check valve. A clogged fuel lter causes poor engine performance. If performance improves when the fuel cap is loosened, the check valve may be faulty or the lter may be clogged. Replace the fuel cap if necessary.

Cleaning the Air Filter

See Figure 22 and Figure 23.

Clean the air lter as indicated by the maintenance schedule. Follow these steps to clean the air lter.

1. Stop the trimmer.

Air Filter

Air

Filter

Cover

Knob

Figure 22

WARNING:

Make sure the trimmer head stops rotating when you release the trigger. Contact with a rotating trimmer head could cause personal injury.

2. Remove the spark plug boot.

3. Loosen the air lter cover by turning the knob counter-

clockwise.

4. Remove the air lter cover.

5. Remove the air lter.

6. Clean the air lter with warm soapy water.

7. Rinse the air lter and let it dry completely.

8. Work two drops of oil into the air lter.

9. Replace the air lter (ts only one way).

10. Replace the air lter cover.

11. Tighten the air lter cover by turning the knob clock-

wise.

12. Replace the spark plug boot. Note: Replace the air lter (Part No. 88048) as indi-

cated by the maintenance schedule.

Cleaning the Spark Arrester

See Figure 23.

Follow these steps to clean the spark arrester.

1. Locate the spark arrester through the hole on the muf-

er-side engine cover.

2. Remove the spark arrester by pulling it out with needle-

nosed pliers.

3. Clean the spark arrester with a small wire brush.

4. Replace the spark arrester.

Maintenance

Spark

Arrester

Figure 23

Replacing the Spark Plug

See Figure 24.

All model numbers included in this manual use an NGK BPMR7A or Champion RCJ-6Y spark plug. Use an exact replacement and replace annually.

1. Remove the spark plug boot.

2. Loosen the spark plug by turning it counterclockwise

with a socket.

3. Remove the spark plug.

4. Hand thread the new spark plug, turning it clockwise.

5. Tighten with a socket and torque to 170 in.lb. mini-

mum, 190 in.lb. maximum. Do not over tighten.

CAUTION:

Be careful not to cross-thread the spark plug. Cross-threading will seriously damage the product.

Spark Plug Boot

Spark

Plug

Storing the Product

Storing the product differs depending on the amount of time it will be in storage.

Note: If the product includes another attachment, place the storage cap on the end of the attachment shaft and hang it up to store.

To Store the Product Short Term

Follow these steps to store the product short term.

1. Clean all foreign material from the product.

2. Store the product in a well-ventilated place that is inac-

cessible to children.

To Store the Product Long Term

If you do not intend to use the product for more than one month, follow the storage procedures below.

Follow these steps to store the product long term.

1. Drain all of the fuel from the tank into a container ap-

proved for gasoline.

2. Run the engine until it stops.

3. Clean all foreign material from the product.

4. Store the product in a well-ventilated place that is inac-

cessible to children.

Note: Keep the product away from corrosive agents

such as garden chemicals and de-icing salts.

Important: Abide by all federal and local regulations

for the safe storage and handling of gasoline.

Transporting the Product

Follow these steps to transport the product.

1. Drain the fuel mixture into a container that is approved

for use with gasoline.

2. Carry the product by the front handle.

3. Secure the product in your vehicle or on a trailer.

Figure 24

Maintenance

Troubleshooting

Problem Possible Cause Solution

Engine will not start

1. Switch set to the O (OFF) position.

2. No spark

3. No fuel

4. Flooded engine

5. Starter cord pulls harder now then when new

1. Set switch to the I (ON) position.

2. Remove the spark plug. Reattach the spark plug cap and lay the spark plug on the metal cylinder. Pull the starter cord and watch for a spark at the spark plug tip. If there is no spark, repeat the test with a new spark plug.

3. Push primer bulb until the bulb is full of fuel. If the bulb does not ll, the primary fuel delivery system is blocked. If the primer bulb lls, the engine may be ooded. (See next item.)

4. Remove the spark plug. Turn the product so that the spark plug hole is aimed at the ground. Make sure the choke lever is set to B and pull the starter cord 10 to 14 times. This clears excess fuel from the engine. Clean and reinstall the spark plug. With the trigger fully depressed, pull the starter cord 3 times. If the engine does not start, set the choke lever to A and follow normal starting instructions. If the engine still fails to start, repeat the procedure with a new spark plug.

5. Contact an authorized service dealer.

Engine does not reach full speed and emits excessive smoke

Line will not advance when using automatic line lengthening

Retaining cap hard to turn when using automatic line lengthening

Grass wraps around the trimmer head assembly and the attachment shaft

Oil drips from mufer

1. Check oil fuel mixture

2. Air lter is dirty

3. Spark arrestor screen is dirty

1. Line welded to itself

2. Not enough line on the spool

3. Line worn too short

4. Line tangled on spool

5. Engine speed too slow

Screw threads are dirty or damaged

1. Cutting tall grass at ground level

2. Operating the product at part throttle

1. Operating the product at part throttle

2. Check oil/fuel mixture

3. Air lter is dirty

1. Use fresh fuel and the correct 2-cycle oil mix.

2. Clean the air lter.

3. Clean the spark arrester.

1. Lubricate with silicone spray.

2. Install more line.

3. Pull line while alternately pressing down on and releasing the retaining cap.

4. Remove line from spool and rewind.

5. Advance line at full throttle.

Clean the threads and lubricate with grease. If this does not solve the problem, replace the retaining cap.

1. Cut tall grass from the top down.

2. Operate the product at full throttle.

1. Operate the product at full throttle.

2. Use fresh fuel and the correct 2-cycle oil mix.

3. Clean the air lter.

Troubleshooting

Warranty

OWT Industries, Inc. Gas Trimmer Products Limited Warranty

OWT INDUSTRIES, INC. warrants to the original retail purchaser that this Gas Trimmer Product is free from defects in material and workmanship and agrees to repair or replace, at our option, any defective Product free of charge within these time periods from the date of purchase:

■ Two years for Gas Trimmer Products, if the Product is used for personal, family, or household use;

■ 90 days, if Gas Trimmer Products are used for any other purpose, such as commercial or rental.

■ Two years for emissions control systems on Gas Trimmer Products used for any purpose, as provided below. Except as provided in the Emission Control Warranty Statement, this warranty extends to the original retail purchaser only

and commences on the date of original retail purchase.

Instructions for Obtaining Warranty Service

Any part of the Product manufactured or supplied by OWT Industries, Inc. and found in the reasonable judgement of OWT, Industries, Inc. to be defective in material or workmanship will be repaired or replaced by an authorized service dealer for this product without charge for parts and labor. To locate your nearest authorized service dealer for this product, contact us

Toll free at 1-866-574-9242 (US) or 1-866-574-9243 (Canada). The Product including any defective part must be returned to an Authorized Service Dealer for this product within the war-

ranty period. The expense of delivering the Gas Trimmer Product to the service dealer for warranty work and the expense of returning it back to the owner after repair or replacement will be paid for by the owner. OWT Industries. Inc.’s responsibility in respect to claims is limited to making the required repairs or replacements and no claim of breach of warranty shall be cause for cancellation or rescission of the contract of sale of any Product. Proof of purchase will be required by the dealer to substantiate any warranty claim. All warranty work must be performed by a service dealer authorized by OWT Industries, Inc. to service this product.

This warranty does not cover any Gas Trimmer Product that has been subject to misuse, neglect, negligence, or accident, or that has been operated in any way contrary to the operating instructions as specied in the Operator’s Manual. This warranty does not apply to any damage to the Gas Trimmer Product that is the result of improper maintenance or to any Gas Trimmer Product that has been altered or modied so as to adversely affect the products operation, performance or durability or that has been altered or modied so as to change its intended use. The warranty does not extend to repairs made necessary by normal wear or by the use of parts or accessories which are either incompatible with the Gas Trimmer Product or adversely affect its operation, performance or durability.

In addition, this warranty does not cover the following (except to the extent covered by the emissions control warranty set forth below):

A. Tune-ups – Spark Plugs, Carburetor Adjustments, Filters B. Wear Items – Bump Knobs, Outer Spools, Cutting Line, Inner Reels, Starter Pulley, Starter Ropes, Drive Belts OWT Industries, Inc. reserves the right to change or improve the design of any Gas Trimmer Product without assuming any

obligation to modify any product previously manufactured. ALL IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE STATED WARRANTY PERIOD. ACCORD-

INGLY, ANY SUCH IMPLIED WARRANTIES INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR OTHERWISE, ARE DISCLAIMED IN THEIR ENTIRETY AFTER THE EXPIRATION OF THE APPROPRIATE TWO-YEAR OR NINETY DAY WARRANTY PERIOD. OWT INDUSTRIES INC.’S OBLIGATION UNDER THIS WARRANTY IS STRICTLY AND EXCLUSIVELY LIMITED TO THE REPAIR OR REPLACEMENT OF DEFECTIVE PARTS AND OWT DOES NOT ASSUME OR AUTHORIZE ANYONE TO ASSUME FOR THEM ANY OTHER OBLIGATION. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.

OWT INDUSTRIES INC. ASSUMES NO RESPONSIBILITY FOR INCIDENTAL, CONSEQUENTIAL OR OTHER DAMAGES INCLUDING, BUT NOT LIMITED TO EXPENSE OF RETURNING THE GAS TRIMMER PRODUCT TO A GAS TRIMMER AUTHORIZED SERVICE DEALER AND EXPENSE OF DELIVERING IT BACK TO THE OWNER, MECHANIC’S TRAVEL TIME, TELEPHONE OR TELEGRAM CHARGES, RENTAL OF A LIKE PRODUCT DURING THE TIME WARRANTY SERVICE IS BEING PERFORMED, TRAVEL, LOSS OR DAMAGE TO PERSONAL PROPERTY, LOSS OF REVENUE, LOSS OF USE OF THE PRODUCT, LOSS OF TIME, OR INCONVENIENCE. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.

This warranty gives you specic legal rights, and you may also have other rights, which vary, from state to state. This product is manufactured under license from The Toro Company by OWT Industries, Inc.

Warranty

+ 58 hidden pages