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•  SAFETY AND INTERNATIONAL SYMBOLS  •

This operator's manual describes safety and international symbols and pictographs that may appear on this product.
Read the operator's manual for complete safety, assembly, operating, maintenance, and repair information.

RULES FOR SAFE OPERATION

The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols,
and their explanations, deserve your careful attention and understanding. The safety warnings do
not by themselves eliminate any danger. The instructions or warnings they give are not substitutes
for proper accident prevention measures.

NOTE:

Advises you of information or instructions vital to the operation or maintenance of the equipment.

SYMBOL

MEANING

SPARK ARRESTOR NOTE
NOTE: For users on U.S. Forest Land and in the states of California, Maine, Oregon and Washington.

All U.S. Forest Land and the state of California (Public Resources Codes 4442 and 4443), Oregon and
Washington require, by law that certain internal combustion engines operated on forest brush and/or grass-
covered areas be equipped with a spark arrestor, maintained in effective working order, or the engine be
constructed, equipped and maintained for the prevention of fire. Check with your state or local authorities for
regulations pertaining to these requirements. Failure to follow these requirements could subject you to liability
or a fine. 

This unit is factory equipped with a spark arrestor.

If it requires replacement, ask your LOCAL

SERVICE DEALER to install the 

Accessory Part #753-06182 Muffler Assembly

.

READ ALL INSTRUCTIONS BEFORE OPERATING

• Read the instructions carefully. Be familiar with the controls and proper use of the unit.

• Do not operate this unit when tired, ill, or under the influence of alcohol, drugs, or medication.

• Children and teens under the age of 15 must not use the unit, except for teens guided by an adult.

• All guards and safety attachments must be installed properly before operating the unit.

• Inspect the unit before use. Replace damaged parts. Check for fuel leaks. Make sure all fasteners are in place and secure.

Replace parts that are cracked, chipped, or damaged in any way. Do not operate the unit with loose or damaged parts.

• Carefully inspect the area before starting the unit. Remove all debris and hard or sharp objects such as glass, wire, etc.

• Be aware of the risk of injury to the head, hands and feet.

• Clear the area of children, bystanders, and pets. At a minimum, keep all children, bystanders, and pets outside a 50 feet

(15 m) radius; there still may be a risk to bystanders from thrown objects. Bystanders should be encouraged to wear eye
protection. If approached, stop the unit immediately.

• Use only 0.080 inch (2.03 mm) diameter original equipment manufacturer replacement line. Never use metal-reinforced

line, wire or rope. These can break off and become dangerous projectiles. 

• Squeeze the throttle control and check that it returns automatically to the idle position. Make all adjustments or repairs

before using unit.

SAFETY WARNINGS FOR GAS UNITS

• Store fuel only in containers specifically designed and approved for the storage of such materials.

• Avoid creating a source of ignition for spilled fuel. Do not start the engine until fuel vapors dissipate.

• Always stop the engine and allow it to cool before filling the fuel tank. Never remove the cap of the fuel tank, or add fuel,

when the engine is hot. Never operate the unit without the fuel cap securely in place. Always loosen the fuel tank cap
slowly to relieve any pressure in the tank.

• Mix and add fuel in a clean, well-ventilated outdoor area where there are no sparks or flames. Do not smoke while fueling

or mixing fuel. Wipe up any spilled fuel from the unit immediately. Always wipe unit dry before using.

• Move the unit at least 30 feet (9.1 m) from the fueling source and site before starting the engine. Do not smoke or allow

sparks and open flames near the area while adding fuel or operating the unit.

WHILE OPERATING

• Never start or run the unit inside a closed room or building. Breathing exhaust fumes can kill. Operate this unit only in a well

ventilated outdoor area.

• Wear safety glasses or goggles that are marked as meeting ANSI Z87.1-1989 standards. Also wear ear/hearing protection

when operating this unit. Wear a face or dust mask if the operation is dusty. Long sleeve shirts are recommended.

• Wear heavy, long pants, boots and gloves. Do not wear loose clothing, jewelry, short pants, sandals or go barefoot. Secure

hair above shoulder level.

• The cutting head shield must always be in place while operating the unit. Do not operate unit without both trimming lines

extended, and the proper line installed. Do not extend the trimming line beyond the length of the shield.

• The cutting attachment will spin during idle speed adjustments. Wear protective clothing and observe all safety instructions

to prevent serious personal injury.

• Adjust the D-handle to provide the best grip.

• Be sure the cutting head is not in contact with anything before starting the unit.

• Use the unit only in daylight or good artificial light.

• Avoid accidental starting. Be in the starting position whenever pulling the starter rope. The operator and unit must be in a

stable position while starting. See Starting/Stopping Instructions.

• Use the right tool. Only use this tool for the purpose intended.

• Do not overreach. Always keep proper footing and balance.

• Always hold the unit with both hands when operating. Keep a firm grip on both the front and rear handle or grips.

• Keep hands, face, and feet at a distance from all moving parts. Do not touch or try to stop the cutting head when it is

rotating.

• Do not touch the engine or muffler. These parts get extremely hot from operation. They remain hot for a short time after

turning off the unit.

• Do not operate the engine faster than the speed needed to cut, trim or edge. Do not run the engine at high speed when not

cutting.

• Always stop the engine when cutting is delayed or when walking from one cutting location to another.

• If the unit is struck or becomes entangled with a foreign object, stop the engine immediately and check for damage. Do not

operate before repairing damage. Do not operate the unit with loose or damaged parts.

• Stop and switch the engine to off for maintenance, repair, or for changing the cutting head or other Add-Ons.

• Use only original equipment manufacturer replacement parts and accessories for this unit. These are available from an

authorized service dealer. The use of any unauthorized parts or accessories could lead to serious injury to the user, or
damage to the unit, and void the warranty.

• Keep unit clean of vegetation and other materials. They may become lodged between the cutting head and shield.

• To reduce fire hazard, keep the engine and muffler free from grass, leaves, excessive grease or carbon build up.

OTHER SAFETY WARNINGS

• Never store the unit, with fuel in the tank, inside a building where fumes may reach an open flame or spark.

• Allow the engine to cool before storing or transporting. Be sure to secure the unit while transporting.

• Store the unit in a dry area, locked up or up high to prevent unauthorized use or damage, out of the reach of children.

• Never douse or squirt the unit with water or any other liquid. Keep handles dry, clean and free from debris. Clean after each

use. See the 

Cleaning and Storage instructions

.

• Keep these instructions. Refer to them often and use them to instruct other users. If loaning someone this unit, also loan

them these instructions.

SAVE THESE INSTRUCTIONS

•  IMPORTANT SAFETY INSTRUCTIONS  •

SERVICE INFORMATION

TABLE OF CONTENTS

Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Rules for Safe Operation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Know Your Unit  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Assembly Instructions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Oil and Fuel Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Starting/Stopping Instructions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Operating Instructions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Maintenance & Repair Instructions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Cleaning and Storage  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Troubleshooting Chart  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Specifications  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Warranty Information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

All information, illustrations, and specifications in this manual are based on the latest product information
available at the time of printing. We reserve the right to make changes at any time without notice.
Copyright© 2009 MTD SOUTHWEST INC, All Rights Reserved.

For service call 

1-800-800-7310

in the United States or 

1-800-668-1238

in Canada to obtain a list of authorized

service dealers near you. For more details about your unit, visit our website at 

www.mtdproducts.com 

or

www.mtdproducts.ca

.

If you have difficulty assembling this product or have any questions regarding the controls, operation or
maintenance of this unit, please call the Customer Support Department.

DO NOT RETURN THE UNIT TO THE RETAILER.  PROOF OF PURCHASE WILL BE REQUIRED FOR
WARRANTY SERVICE.

THIS PRODUCT IS COVERED BY ONE OR MORE U.S. PATENTS. OTHER PATENTS PENDING. 
Service on this unit both within and after the warranty period should be performed only by an authorized and
approved service dealer.
Before beginning, locate the unit’s model plate. It lists the model and serial numbers of your unit. Refer to
the sample plate below and copy the information for future reference. 

Copy the serial number here:

Copy the model and parent part numbers here:

NOTE-

This Unit Can Use an Electric Start or Power Start Bit™ Optional Accessory!

Please refer to the Electric Starter or Power Start Bit™ operator’s manual for proper use of
these features. (Items Sold Separately! Please refer to page 5 of this manual for more
information about purchasing these accessories.)

READ THE OPERATOR’S MANUAL AND FOLLOW ALL WARNINGS AND SAFETY
INSTRUCTIONS. FAILURE TO DO SO CAN RESULT IN SERIOUS INJURY TO THE OPERATOR
AND/OR BYSTANDERS.
FOR QUESTIONS, CALL 1-800-800-7310 IN U.S. OR 1-800-668-1238 IN CANADA

CALIFORNIA PROPOSITION 65 WARNING

WARNING

THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS CHEMICALS KNOWN TO THE STATE

OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.

SAFETY ALERT:

Indicates danger, warning or caution. Attention is required in order to

avoid serious personal injury. May be used in conjunction with other symbols or pictographs.

DANGER: 

Failure to obey a safety warning will result in serious injury to yourself or to

others. Always follow the safety precautions to reduce the risk of fire, electric shock and
personal injury.

WARNING:

Failure to obey a safety warning can result in injury to yourself and others. Always

follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

CAUTION: 

Failure to obey a safety warning may result in property damage or personal injury

to yourself or to others. Always follow the safety precautions to reduce the risk of fire, electric
shock and personal injury.

WARNING:

When using the unit, you must follow the safety rules. Please read these

instructions before operating the unit in order to ensure the safety of the operator and any
bystanders. Please keep these instructions for later use.

WARNING:

Gasoline is highly flammable, and its vapors can explode if ignited. Take the

following precautions:

RULES FOR SAFE OPERATION

SYMBOL

MEANING

• SAFETY ALERT SYMBOL

Indicates danger, warning or caution. May be used in conjunction with other symbols
or pictographs.

• READ OPERATOR'S MANUAL

WARNING:

Read the operator’s manual(s) and follow all warnings and safety

instructions. Failure to do so can result in serious injury to the operator and/or bystanders.

• WEAR EYE AND HEARING PROTECTION

WARNING:

Thrown objects and loud noise can cause severe eye injury and hearing

loss. Wear eye protection meeting ANSI Z87.1-1989 standards and ear protection
when operating this unit. Use a full face shield when needed.

• UNLEADED FUEL

Always use clean, fresh unleaded fuel

• DO NOT USE E85 FUEL IN THIS UNIT

WARNING:

It has been proven that fuel containing greater than 15% ethanol will

likely damage this engine and void the warranty.

• OIL

Refer to operator’s manual for the proper type of oil.

• ON/OFF CONTROL

ON / START / RUN

• ON/OFF CONTROL

OFF

• CHOKE CONTROL

1. • FULL choke position

2. • PARTIAL choke position

3. • RUN choke position

• HOT SURFACE WARNING

Do not touch a hot muffler or cylinder. You may get burned. These parts get extremely
hot from operation. When turned off they remain hot for a short time.

• KEEP BYSTANDERS AWAY

WARNING:

Keep all bystanders, especially children and pets, at least 50 feet (15 m.)

from the operating area.

• THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY

WARNING:

Small objects can be propelled at high speed, causing injury. Keep

away from the rotating rotor.

• SHARP BLADE

WARNING: 

Sharp blade on cutting attachment shield.  To prevent serious injury, do

not touch the line cutting blade.

Summary of Contents for Y2550 EC

Page 1: ... of this manual Quick Instructions to Assemble Trimmers For complete instructions refer to the Assembly Instructions section of this manual Unscrew bump knob counterclockwise Remove inner reel and spring 5 X 3 4 Hold the inner reel in place Tighten Bump Knob clockwise IMPORTANT READ OPERATOR S MANUAL THOROUGHLY AND FOLLOW THE SAFE OPERATION PRACTICES BEFORE OPERATING THE UNIT Read and understand a...

Page 2: ...e unit with loose or damaged parts Stop and switch the engine to off for maintenance repair or for changing the cutting head or other Add Ons Use only original equipment manufacturer replacement parts and accessories for this unit These are available from an authorized service dealer The use of any unauthorized parts or accessories could lead to serious injury to the user or damage to the unit and...

Page 3: ...h as STA BIL Gas Stabilizer or an equivalent Add 0 8 oz 23 ml of fuel additive per gallon of fuel according to the instructions on the container NEVER add fuel additives directly to the unit s fuel tank Thoroughly mix the proper ratio of 2 cycle engine oil with unleaded fuel in a separate fuel can Use a 40 1 fuel oil ratio Do not mix them directly in the engine fuel tank See the table for specific...

Page 4: ...a Champion RDJ8J spark plug or equivalent The correct air gap is 0 025 inch 0 635 mm Remove the plug after every 25 hours of operation and check its condition 1 Stop the engine and allow it to cool Grasp the plug wire firmly and pull it from the spark plug 2 Clean around the spark plug Remove the spark plug from the cylinder head by turning a 5 8 inch socket counterclockwise 3 Replace a cracked fo...

Page 5: ...s de série de votre appareil Consultez l exemple de plaque ci dessous et copiez les informations pour toute référence future Copiez le numéro de série ici Copiez le numéro de modèle pièce mère ici Remarque Cet appareil peut utiliser les accessoires de démarrage électrique ou Power Start Bit disponibles en option Veuillez consulter le manuel de l utilisateur du démarreur électrique ou Power Start B...

Page 6: ...evissé le bouchon du réservoir d essence Dévissez lentement le bouchon du réservoir d essence afin de réduire la pression Mélangez et ajoutez le carburant en extérieur dans une zone propre bien aérée et dépourvue de toute source d étincelles ou de flammes Ne fumez pas en remplissant le réservoir ou en mélangeant le carburant L essence s étant échappée de l appareil doit être essuyée immédiatement ...

Page 7: ... étranglement en Position 2 Fig 7 et continuez à le chauffer SI Le moteur ne démarre pas retournez à l étape 4 SI Le moteur ne démarre toujours pas après quelques tentatives placez le levier d étranglement en Position 3 appuyez sur le verrouillage de la manette des gaz et appuyez sur cette dernière SI CHAUD Le moteur est déjà chaud démarrez la machine avec le levier d étranglement en Position 2 Ap...

Page 8: ... carburant est vieux ou mal mélangé Videz puis remplissez le réservoir de carburant frais et bien mélangé avant d effectuer des réglages Voir la section Informations sur l huile et le carburant Nettoyage du filtre à air L état du filtre à air est très important pour le fonctionnement de l appareil Un filtre à air sale restreint le débit d air et affecte le mélange de carburant air On confond cela ...

Page 9: ...ruir a otros usuarios Si le presta esta unidad a alguien préstele también estas instrucciones CONSERVE ESTAS INSTRUCCIONES IMPORTANTE INFORMACION DE SEGURIDAD LLAMADAS A APOYO AL CLIENTE INDICE DE CONTENIDOS Llamadas a apoyo al cliente 9 Normas para una operación segura 9 Conozca su unidad 10 Instrucciones de ensamble 10 Información del aceite y del combustible 10 Instrucciones de arranque y apaga...

Page 10: ... caliente durante 30 a 60 segundos 10 Mantenga apretado el control del regulador ponga la palanca del obturador en la Posición 3 Fig 7 y haga funcionar la unidad durante 60 segundos más La unidad se puede usar durante este paso NOTA La unidad se ha calentado debidamente cuando el motor acelera sin fallar SI el motor funciona con fallas vuelva a colocar la palanca del obturador en la Posición 2 Fig...

Page 11: ...0 mm 8 pulgadas trabajando de arriba hacia abajo en pequeños incrementos para evitar el desgaste prematuro de la línea y el arrastre del motor Corte de derecha a izquierda siempre que sea posible Cortar hacia la izquierda mejora la eficiencia de la unidad Los recortes salen arrojados en sentido contrario al operador Mueva lentamente el recortador dentro y fuera del área de corte a la altura desead...

Page 12: ...I NECESITA ASISTENCIA ADICIONAL COMUNÍQUESE CON SU PROVEEDOR DE SERVICIO AUTORIZADO MOTOR Bastidor del eje impulsor Tubo de acero Control del regulador Gatillo para el dedo Peso de la unidad sin combustible 10 libras 4 5 kg Mecanismo de corte Bump Head Diámetro de la bobina de línea 3 pulg 76 2 mm Diámetro de la línea de corte 0 080 pulg 2 03 mm Diámetro de la trayectoria de corte 16 pulg 40 64 cm...

Page 13: ...13 ...

Page 14: ...14 ...

Page 15: ...15 ...

Page 16: ... territoires exception faite en ce qui concerne les produits vendus par l intermédiaire de ses canaux agréés de distribution à l exportation MTD LLC se réserve le droit de modifier ou d améliorer la conception de ses produits sans pour autant assumer l obligation de modifier tout produit d une fabrication plus ancienne Aucune garantie implicite y compris toute garantie de valeur marchande ou d ada...

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