Echo SRM-266U User manual

WARNING
Users of this equipment risk injury to themselves and others if the unit is used
improperly and/or safety precautions are not followed. ECHO provides an
operator’s manual and a safety manual. Both must be read and understood for
proper and safe operation. Failure to do so could result in serious injury.
Grass Trimmer/Brush Cutter
Operator's Manual
MODEL SRM - 266U
X7502026202 X750018692
03/13

2
IntroductIon
Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-
job-dependability. Read and understand this manual and the SAFETY MANUAL. You will nd both easy to use and
full of helpful operations tips and SAFETY messages.
the operator'smanual
Keep it in a safe place for future reference. Contains specications and
information for safety, operation, maintenance, storage, and assembly
specic to this product.
the safety manual
Keep it in a safe place for future reference. Explains possible hazards
and the measures you should take to insure safe operation.
Maintenance.......................................................................20
- Skill Levels ................................................................20
- Maintenance Intervals................................................21
- Air Filter.....................................................................22
- Fuel Filter...................................................................22
- Spark Plug..................................................................23
- Cooling System .........................................................23
- Exhaust System..........................................................24
- Carburetor Adjustment...............................................26
- High Altitude Operation...........................................23
- Lubrication.................................................................27
- Nylon Line Disassembly.............................................27
- Nylon Line Replacement ...........................................28
- Sharpening Metal Blades ...........................................29
Troubleshooting .................................................................30
Storage ...............................................................................31
Specications .....................................................................32
Warranty Statements ..........................................................33
Servicing Information ........................................................36
- Parts/Serial Number...................................................36
- Service........................................................................36
- ECHO Consumer Product Support ............................36
- Warranty Card............................................................36
- Additional or Replacement Manuals .........................36
Specications, descriptions and illustrative material in
this literature are as accurate as known at the time of
publication, but are subject to change without notice.
Illustrations may include optional equipment and acces-
sories, and may not include all standard equipment.
Copyright© 2013 By Echo, Incorporated
All Rights Reserved.
table of contents
Introduction..........................................................................2
- The Operator's Manual.................................................2
- The Safety manual .......................................................2
Safety ...................................................................................3
- Manual Safety Symbols and Important Information ...3
- International Symbols ..................................................3
- Personal Condition and Safety Equipment ..................3
- Equipment....................................................................6
Emission Control .................................................................6
Description...........................................................................8
Contents ...............................................................................9
Assembly..............................................................................9
- Plastic Shield Installation.............................................9
- Nylon Line Head Installation.....................................10
- To Advance Trimmer Line .........................................11
- Remove Nylon Head..................................................11
- Blade Operation .........................................................11
- U-Handle Installation.................................................13
- Throttle Linkage and Ignition Leads..........................13
- Balance and Adjust Unit ............................................14
Operation............................................................................15
- Blade Selection ..........................................................15
- Fuel ............................................................................16
- Starting Cold Engine..................................................18
- Starting Warm Engine................................................19
- Stopping Engine.........................................................20

Grass Trimmer/Brush CuTTer 3
OperatOr'sManual
InternatIonal symbols
safety
manual safety symbols and Important InformatIon
Throughout this manual and on the product itself, you will nd safety alerts and helpful, informational messages pre-
ceded by symbols or key words. The following is an explanation of those symbols and key words and what they mean
to you.
Hot
Surface
Carburetor Adjust-
ment
- Idle speed
Carburetor Adjust-
ment
- High speed
mixture
DESCRIPTION SYMBOLSYMBOL
"WARNING, SEE OP-
ERATOR'S MANUAL
Wear eye, ear
and head protec-
tion
Emergency
Stop Fuel and oil
mixture
Carburetor Adjust-
ment
- Low speed
mixture
Primer
Bulb
Ignition
ON/
OFF
Wear hand and
foot protection
Safety/Alert
Keep bystanders and helpers
away 15 m (50 ft.).
DO NOT smoke
near fuel.
DO NOT allow
ames or sparks
near fuel.
DESCRIPTION SYMBOL DESCRIPTION SYMBOL DESCRIPTION
Choke Control
"Cold Start"
Position
(Choke Closed)
Choke Control
"Run"
Position
(Choke Open)
Do not use
blades. String
line only
personal condItIon and safety equIpment
WARNING
Users of this product risk injury to themselves and others if the unit is used improperly and/or safety precautions are
not followed. Proper clothing and safety gear must be worn when operating unit.
WARNING
The safety alert symbol accompanied by the word
“WARNING” calls attention to an act or condi-
tion which CAN lead to serious personal injury or
death if not avoided.
CIRCLE AND SLASH SYMBOL
This symbol means the specic action
shown is prohibited. Ignoring these prohi-
bitions can result in serious or fatal injury.
CAUTION
The safety alert symbol accompanied by the word
“CAUTION” calls attention to an act or condition
which may lead to minor or moderate personal
injury if not avoided.
NOTE
This enclosed message provides tips for use, care and
maintenance of the unit.
IMPORTANT
The enclosed message provides information neces-
sary for the protection of the unit.
DANGER
The safety alert symbol accompanied by the word
“DANGER” calls attention to an act or condition
which WILL lead to serious personal injury or
death if not avoided.
Rotating
Cutting Attach-
ment

4
Extended Operation/Extreme Conditions
It is believed that a condition called Raynaud’s Phenomenon, which affects the ngers of certain individuals, may be
brought about by exposure to vibration and cold. Exposure to vibration and cold may cause tingling and burning sensa-
tions, followed by loss of color and numbness in the ngers. The following precautions are strongly recommended,
because the minimum exposure, which might trigger the ailment, is unknown.
• Keep your body warm, especially the head, neck, feet, ankles, hands,
and wrists.
• Maintain good blood circulation by performing vigorous arm exer-
cises during frequent work breaks, and also by not smoking.
• Limit the hours of operation. Try to ll each day with jobs where op-
erating the unit or other hand-held power equipment is not required.
• If you experience discomfort, redness, and swelling of the ngers fol-
lowed by whitening and loss of feeling, consult your physician before
further exposing yourself to cold and vibration.
Physical Condition
Your judgment and physical dexterity may not be good:
• if you are tired or sick,
• if you are taking medication,
• if you have taken alcohol or drugs.
Operate unit only if you are physically and mentally well.
Eye Protection
Wear eye protection that meets ANSI Z87.1 or CE require-
ments whenever you operate the unit.
Hand Protection
Wear no-slip, heavy-duty work gloves to improve your
grip on the handle. Gloves also reduce the transmission of
machine vibration to your hands.
Hearing Protection
ECHO recommends wearing hearing protection whenever
unit is used.
Proper Clothing
Wear snug tting, durable clothing;
• Pants should have long legs, shirts with long sleeves.
• DO NOT WEAR SHORTS,
• DO NOT WEAR TIES, SCARVES, JEWELRY,
or clothing with loose or hanging items that could
become entangled in moving parts or surrounding
growth.
Wear sturdy work shoes with nonskid soles;
• DO NOT WEAR OPEN TOED SHOES,
• DO NOT OPERATE UNIT BAREFOOTED.
Wear no-slip, heavy duty work gloves.
Keep long hair away from engine and air intake. Retain
hair with cap or net.
Hot Humid Weather
Heavy protective clothing can increase operator fatigue
which may lead to heat stroke. Schedule heavy work for
early morning or late afternoon hours when temperatures
are cooler.
WARNING
The ignition components of this machine generate an electromagnetic eld during operation which may interfere
with some pacemakers. To reduce the risk of serious or fatal injury, persons with pacemakers should consult with
their physician and the pacemaker manufacturer before operating this machine. In the absence of such informa-
tion, ECHO does not recommend the use of ECHO products by anyone who has a pacemaker.

Grass Trimmer/Brush CuTTer 5
OperatOr'sManual
DANGER
Do not operate this product indoors or in inadequately ventilated
areas. Engine exhaust contains poisonous emissions and can cause
serious injury or death.
Read the Manuals
• Provide all users of this equipment with the Operator’s Manual and
Safety Manual for instructions on Safe Operation.
Clear the Work Area
• Spectators and fellow workers must be warned, and children and
animals prevented from coming nearer than 15 m (50 ft.) while the
unit is in use.
Keep a Firm Grip
• Hold the front and rear handles with both hands, with thumbs and
ngers encircling the handles.
Keep a Solid Stance
• Maintain footing and balance at all times. Do not stand on slippery,
uneven or unstable surfaces. Do not work in odd positions or on lad-
ders. Do not over reach.
Avoid Hot Surfaces
• Keep exhaust area clear of ammable debris. Avoid contact during
and immediately after operation.
Repetitive Stress Injuries
It is believed that overusing the muscles and tendons of the ngers, hands, arms, and shoulders may cause soreness,
swelling, numbness, weakness, and extreme pain in those areas. Certain repetitive hand activities may put you at a high
risk for developing a Repetitive Stress Injury (RSI). An extreme RSI condition is Carpal Tunnel Syndrome (CTS), which
could occur when your wrist swells and squeezes a vital nerve that runs through the area. Some believe that prolonged
exposure to vibration may contribute to CTS. CTS can cause severe pain for months or even years.
To reduce the risk of RSI/CTS, do the following:
• Avoid using your wrist in a bent, extended, or twisted position.
Instead try to maintain a straight wrist position. Also, when grasping,
use your whole hand, not just the thumb and index nger.
• Take periodic breaks to minimize repetition and rest your hands.
• Reduce the speed and force with which you do the repetitive move-
ment.
• Do exercise to strengthen the hand and arm muscles.
• Immediately stop using all power equipment and consult a doctor if
you feel tingling, numbness, or pain in the ngers, hands, wrists, or
arms. The sooner RSI/CTS is diagnosed, the more likely permanent
nerve and muscle damage can be prevented.

6
equIpment
WARNING
Use only ECHO approved attachments. Serious injury may result from the use of a non-approved attachment com-
bination. ECHO, INC. will not be responsible for the failure of cutting devices, attachments or accessories which
have not been tested and approved by ECHO. Read and comply with all safety instructions listed in this manual and
safety manual.
• Check unit for loose/missing nuts, bolts, and screws. Tighten and/or replace as needed.
• Inspect shield for damage and ensure that the cut-off knife is securely in place. Replace if either is damaged or miss-
ing.
• Check that the cutting attachment is rmly attached and in safe operating condition.
• Check that front loop handle and shoulder strap/ or shoulder/waist harness are adjusted for safe, comfortable opera-
tion. See Assembly Section for proper adjustment.
WARNING
Moving parts can amputate ngers or cause severe injuries. Keep hands, clothing and loose objects away from all
openings.
• ALWAYS stop engine, disconnect spark plug, and make sure all moving parts have come to a complete stop
before removing obstructions, clearing debris, or servicing unit.
• DO NOT start or operate unit unless all guards and protective covers are properly assembled to unit.
• NEVER reach into any opening while the engine is running. Moving parts may not be visible through openings.
WARNING
Check fuel system for leaks due to fuel tank damage, especially if the unit is dropped. If damage or leaks are found,
do not use unit, otherwise serious personal injury or property damage may occur. Have unit repaired by an authorized
servicing dealer before using.
An Emission Control Label is located on the engine.
(This is an EXAMPLE ONLY, information on label varies
by engine FAMILY).
emIssIon control (eXhaust &evaporatIve)
EPA 2010 and Later
PRODUCT EMISSION DURABILITY (EMISSION COMPLIANCE PERIOD)
e 50 or 300 hour emission compliance period is the time span selected by the manufacturer certifying the engine
emissions output meets applicable emissions regulations, provided that approved maintenance procedures are fol-
lowed as listed in the Maintenance Section of this manual.
e emission control system for the engine is EM (engine
modication) and, if the second to last character of the Engine
Family on the Emission Control Information label (sample
below) is “C”, “K”, or “T”, the emission control system is EM
and TWC (3-way catalyst). e fuel tank/fuel line emission
control system is EVAP (evaporative emissions). Evaporative
emissions for California models are only applicable to fuel
tanks.

Grass Trimmer/Brush CuTTer 7
OperatOr'sManual
1
2
3
4
5
12
9
13
8
7
6
Shaft Decal
Hot Decal (near mufer)
descrIptIon
Locate these safety decals on your unit. Make sure the decals are legible and that you understand and follow the instruc-
tions on them. If a decal cannot be read, a new one can be ordered from your ECHO dealer. See PARTS ORDERING
instructions for specic information.
Metal Debris Shield Decal
18
15
16
17
19
22
20
21
14
11
10

8
1. POWER HEAD - Includes the Engine, Clutch, Fuel System, Ignition System and Recoil Starter.
2. THROTTLE TRIGGER LOCKOUT - This lever must be held during starting. Operation of the throttle trigger is
prevented unless throttle trigger lockout lever is engaged.
3. STOP SWITCH - "SLIDE SWITCH" mounted on top of the Throttle Trigger Housing. Move switch FORWARD
to RUN, BACK to STOP.
4. THROTTLE TRIGGER - Controls engine speed. Spring loaded to return to idle when released. During accelera-
tion, press trigger gradually for best operating technique.
5. DRIVE SHAFT ASSEMBLY - Includes the Rear (right hand) Handle assembly, Gear Housing assembly, Front
(loop, left hand) Handle assembly, metal drive shaft and Safety Decal.
6. NYLON CUTTER HEAD - Contains replaceable nylon trimming line that advances when the trimmer head is
tapped against the ground while the head is turning at normal operating speed.
7. CUT-OFF KNIFE - Automatically trims line to the correct length: 5" after head is tapped on the ground. If trimmer
is operated without a cut-off knife, the line will become too long, the engine will overheat, and engine damage may
occur.
8. PLASTIC DEBRIS SHIELD ASSEMBLY - Included in plastic bag (co-pack). MUST be installed on unit before
use, see Assembly Instructions. Shield assembly includes the Cut-Off Knife. Mounts on the Gear Housing Assem-
bly just above the cutting attachment. Helps protect the operator by deecting debris produced during the trimming
operation. This shield must be replaced with the metal shield for blade use.
9. U-HANDLE - Required for metal blade operation.
10. HIP PAD - Used to protect hip/leg and clothing when using U-handle equipped unit.
11. SHOULDER HARNESS- An adjustable strap that suspends the unit from the operator. Using the strap reduces
operator fatigue.
12. BLADE - Circular blade for grass, weed or brush cutting applications. Harness, metal shield & U-handles required
for blade operation.
13. METAL BLADE SHIELD - Required when unit is equipped with blades. Do not operate unit without shield.
14. SPARK PLUG - Provides spark to ignite fuel mixture.
15. ARM REST - Provides arm rest during operation and protects arm from the hot engine.
16. SPARK ARRESTOR MUFFLER OR SPARK ARRESTOR MUFFLER WITH CATALYST -The mufer or
catalytic mufer controls exhaust noise and emission. The spark arrestor screen prevents hot, glowing particles of
carbon from leaving the mufer. Keep exhaust area clear of ammable debris.
17. FUEL TANK - Contains fuel and fuel lter.
18. RECOIL STARTER HANDLE - Pull handle slowly until starter engages, then quickly and rmly. When engine
starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.
19. FUEL TANK CAP - Covers and seals fuel tank opening.
20. PURGE BULB - Pumping purge bulb before starting engine draws fresh fuel from the fuel tank, purging air from
the carburetor. Pump purge bulb until fuel is visible and ows freely in the clear fuel tank return line. Pump purge
bulb an additional 4 or 5 times.
21. AIR CLEANER - Contains replaceable lter element.
22. CHOKE - The choke control is located at the rear of the air cleaner housing. Move choke lever to Cold Start
() to close choke for cold start. Move choke lever to "Run" ( ) position to open choke.

Grass Trimmer/Brush CuTTer 9
OperatOr'sManual
assembly
plastIc shIeld InstallatIon
(Nylon line operation)
Parts Required: Plastic Debris Shield, Shield Plate,
three (3) 5 x 16 mm screws.
contents
The ECHO product you purchased has been factory pre-assembled for your convenience. Due to packaging restrictions,
shield installation and other assembly may be necessary.
After opening the carton, check for damage. Immediately notify your retailer or ECHO Dealer of damaged or missing
parts. Use the contents list to check for missing parts.
___ 1- Power Head / Drive Shaft Assembly
___ 1- Plastic Bag (co-pack)
___ - 1, Operator's Manual
___ - 1, Emission Control Warranty Statement
___ - 1, Safety Manual
___ - 1, Warranty Registration Card
___ - 1, Plastic shield
___ - 1, Tool Bag
___ - 1, Nylon Trimmer Head
___ - 1, Safety Glasses
___ - 1, Plastic Bag
___ --1, shield plate
___ --3, 5mm x 16mm screws (shield mtg.)
___ --1, 8mm x 55mm bolt
___ --1, at washer
___ --2, cable clips
___ - 1, Plastic Bag
___ --3, 5mm x 16mm screws (shield mount)
___ --2, 5mm x 8mm screws (bracket to shield)
___ --4, 5mm nuts
___ --4, 5mm lockwashers
___ --1, metal shield
___ --1, bracket
___ - 1, Shoulder Harness w/hip pad
___ - 10, Cotter Pins
___ - Assembly Tool (s)
DECLARACIÓN DE GARANTÍADE CONTROL DE EMISIONES DE ECHO INCORPORATED
PARALAS MARCAS ECHO Y SHINDAIWA
LaAgencia de Protección Medioambiental (EPA) y la Junta de Recursos de Aire de California (C.A.R.B.) y ECHO Incorporated (ECHO Inc.) tienen el
placer de explicar la garantía del sistema de control de emisiones en su equipo o motor pequeño que no sea para desplazamiento por carretera (SORE)
de 2010 o posteriores. Los nuevos equipos/SORE deben diseñarse, fabricarse y equiparse de modo que cumplan con las estrictas normas anticontami-
nación de EPAy CARB. ECHO Inc debe garantizar el sistema de control de emisiones en su equpo/SORE para los períodos citados a continuación,
siempre que no haya habido ningún abuso, negligencia o mantenimiento indebido de su equipo/SORE. El sistema de control de emisiones puede incluir
piezas tales como: carburador,sistema de inyección de combustible, sistema de encendido, convertidor catalítico/silenciador, depósito de combustible,
líneas de alimentación de combustible, conjunto de tapa de combustible, bujías, ltros de aire y otros componentes relacionados. Donde exista una
condición cubierta por la garantía, ECHO Inc reparará su equipo/SORE de forma gratuita, incluido el diagnóstico, las piezas y la mano de obra. La
garantía del sistema de control de emisiones se extiende al propietario original incluidos todos los propietarios subsiguientes.
COBERTURADE GARANTÍA DEL FABRICANTE:
El sistema de control de emisiones está garantizado durante 2 años o mientras dure la garantía de ECHO Inc, lo que sea más largo. Si cualquier pieza
relacionada con las emisiones de su equipo es defectuosa, la pieza será reparada o reemplazada por ECHO Inc. o su representante de servicio autor-
izado.
RESPONSABILIDADES DELPROPIETARIO RELACIONADAS CON LA GARANTÍA:
Como propietario del equipo/SORE, usted es responsable de llevar a cabo el mantenimiento requerido indicado en el manual del operador.ECHO Inc.
recomienda que guarde todos los recibos de mantenimiento de su equipo/SORE, no obstante ECHO Inc. no puede negar la garantía solamente por
falta de recibos o por no asegurarse de llevar a cabo todo el mantenimiento programado. Como propietario del equipo/SORE debe ser consciente de
que ECHO Inc. puede rechazar su cobertura de garantía si su equipo/SORE o una pieza ha fallado debido abuso, negligencia, mantenimiento indebido
o modicaciones no aprobadas.
Usted es responsable de llevar a su equipo/SORE a un representante de servicio autorizado por ECHO Inc. tan pronto como surja un problema. Las
reparaciones de garantía deben completarse en un período razonable, que no debe sobrepasar los 30 días. Si existe una condición cubierta por la
garantía y no hay un distribuidor autorizado en un radio de 100 millas, ECHO Inc. pagará el envío de la unidad al distribuidor autorizado más cercano.
Si tiene dudas sobre la cobertura de la garantía, debe ponerse en contacto con ECHO Inc. llamando al 1-800-673-1558, sitio web WWW.ECHO-USA.
COM o ponerse en contacto con Shindaiwa al 1-877-986-7783, visitando el sitio web WWW.SHINDAIWA.COM.
¿QUE CUBRE ESTAGARANTÍA?
ECHO Inc. garantiza que su equipo/SORE fue diseñado, fabricado y equipado para cumplir con las normas de emisiones de EPAy CARB correspon-
dientes y que su equipo/SORE no tiene defectos ni de material ni de elaboración que haga que no cumpla con los requisitos correspondientes durante
2 años o mientras dure la garantía de ECHO Inc., lo que sea más largo. El periodo de garantía empieza en la fecha en que el usuario nal compre el
producto.
¿CÓMO SE CORREGIRÁ UNAPIEZA CUBIERTA?
Si hay un defecto en una pieza cubierta por esta garantía, cualquier Distribuidor de servicio autorizado de ECHO Inc. corregirá el defecto. No tendrá
que pagar nada para ajustar,reparar o reemplazar la pieza. Estoincluye cualquier mano de obra y diagnóstico para reparaciones garantizadas por el
distribuidor. Además estarán garantizadas las piezas de motor que no estén expresamente cubiertas por esta garantía pero cuya falla sea consecuencia
de la falla de una pieza cubierta.
¿QUÉ PIEZAS ESTÁN CUBIERTAS?
Cualquier pieza correspondiente relacionada con emisiones que no esté programada para el “mantenimiento requerido” será reparada o reemplazada
en el período de garantía. La pieza reparada o reemplazada estará garantizada durante el resto del período de garantía de ECHO Inc.
Cualquier pieza garantizada que esté programada solamente para su inspección regular en las instrucciones escritas proporcionadas está garantizada
durante el período de garantía indicado arriba. Cualquier pieza reparada o reemplazada estará garantizada durante el resto del período de garantía de
ECHO Inc.
Cualquier pieza relacionada con emisiones programada para sustituirse durante el “mantenimiento requerido” estará garantizada durante el período
antes del primer punto de sustitución programada para esa pieza. Cualquier pieza reparada o reemplazada cubierta por la garantía debe garantizarse
durante el resto del período antes del primer punto de reemplazo programado para esa pieza.
Cualquier pieza de repuesto aprobada por el fabricante puede usarse para llevar a cabo cualquier mantenimiento o reparaciones cubiertos por la ga-
rantía en las piezas relacionadas con las emisiones, y deben proveerse de forma gratuita si la pieza sigue cubierta por la garantía.
Se puede usar cualquier pieza de repuesto que sea equivalente en rendimiento y durabilidad en el mantenimiento o reparaciones no cubiertos por la
garantía y no debe reducir las obligaciones de la garantía del fabricante.
Durante el peróodo de garantía del equipo/SORE, ECHO Inc. mantendrá un inventario de piezas garantizadas suciente para cumplir con la demanda
esperada de las mismas.
PIEZAS GARANTIZADAS RELACIONADAS CON EMISIONES ESPECÍFICAS:
• Sistema de encendido electrónico • Bujía
• Conjunto de convertidor catalítico/silenciador • Carburador (conjunto completo o componentes de repuesto)
• Estrangulado • Conjunto de inyección de combustible (o componentes de repuesto)
• Depósito de combustible •Conjunto de tapa de combustible
• Filtro de aire •Línea de alimentación de combustible (y abrazaderas/conectores relacionados
correspondientes)
¿QUÉ NO ESTÁ CUBIERTO?
Cualquier falla ocasionada por abuso, negligencia, mantenimiento indebido, modicaciones no aprobadas, uso de piezas agregadas no aprobadas/
piezas modicadas o accesorios no aprobados.
Esta garantía de control de emisiones es válida solamente en EE.UU., sus territorios y Canadá.
99922201033
01/2010

10
WARNING
The plastic shield is for use with the Nylon Line Head only. Install
Metal Shield when using plastic or metal blades, or serious injury
may result.
1. Align hole in upper plate (D) with notch in gear housing (G), and
insert locking tool to prevent splined shaft from turning. Arrow on
gear housing ange points to notch location.
2. Remove cotter pin (A), L.H. blade nut (B), lower plate (C), and up-
per plate (D) from PTO shaft. Turn blade nut clockwise to remove.
3. Remove locking tool. Retain lower plate, blade nut, and cotter pin
for future use with blade conversions.
4. Align plastic debris shield (F) with the drive shaft, and install on
the bottom of the gear housing ange.
5. Place shield plate (E) on shield, align holes and install three (3)
screws.
6. Replace upper plate (D) on PTO shaft.
ED
F
CBA
D
G
nylon lIne head InstallatIon
Parts Required: Nylon Line Head.
CAUTION
Wear Gloves or personal injury may result:
• Cutoff knife is sharp.
• Gearcase and surrounding area may be hot.
1. Make sure plastic debris shield (F) is properly aligned, and upper
plate (D) is installed on splined PTO shaft.
2. Align hole in upper plate (D) with notch in gear housing (G), and
insert locking tool (H) to prevent splined shaft from turning.
3. Thread line head (I) onto PTO shaft by turning it counter-clock-
wise until head is tight against upper plate (D).
4. Remove locking tool.
D
H
F
IMPORTANT
Semi-automatic nylon line heads must be used only with plastic
debris shield with cut-off knife. Using nylon line heads with metal
debris shield can result in trimmer damage, caused by operation
with excessive line length.
I
H
F

Grass Trimmer/Brush CuTTer 11
OperatOr'sManual
to advance trImmer lIne
See Maintenance Section for nylon line replacement.
NOTE
To advance trimmer line, tap trimmer head against the ground
while the head is turning at normal operating speed.
remove nylon lIne head
NOTE
Do not disassemble nylon line head.
1. Align locking hole in upper plate with notch in edge of gear hous-
ing and insert head locking tool (H).
2. Remove line head (I) by turning it clockwise until head is com-
pletely off of shaft.
3. Remove locking tool (H).
blade InstallatIon
WARNING
You must install the U-Handle and all Blade Conversion parts shown in the following instructions before operating
this unit with a metal blade, otherwise serious injury may result.
NOTE
Model SRM-266U includes U-Handle, and necessary blade conversion parts. Blades are not provided with trim-
mer/brushcutters and must be selected for type of cutting being performed. See page 15, "Blade Selection."
Install Metal Shield
Parts Required: Metal Shield, Shield Bracket,
3 - 5 x 16 mm screws w/captivated at and lock-
washer, (metal shield to gear housing).
2 - 5 x 8 mm screws, 2 - 5 mm nuts, 2 - 5 mm lock-
washers, (bracket to shield).
2 - 5 mm nuts, 2 - 5 mm lockwashers
(bracket to gear housing)
1. If installed remove nylon line head, upper xing plate, shield plate,
and plastic shield.
a. Align locking hole in upper plate with notch in edge of gear
housing and insert head locking tool (A).
b. Remove line head (B) by turning it clockwise until head is
completely off of shaft.
c. Remove locking tool.
I
H
B
A
C

12
J
I
E
HGF
D
E
d. Remove three screws holding shield plate and plastic shield
(C) to gear housing.
e. Retain line head, upper xing plate, shield plate, and plastic
shield for conversion back to nylon line head operation.
2. Align hole in upper plate (D) with notch in gear housing (E), and
insert locking tool to prevent splined shaft from turning. Arrow on
gear housing ange points to notch location.
3. Remove split pin (F), L.H. blade nut (G), lower plate (H), and up-
per plate (D) from PTO shaft. Turn blade nut clockwise to remove.
4. Remove locking tool.
5. Loosely attach bracket (I) to shield (J) and attach shield to bottom
of gear housing (E) with hardware provided.
6. Tighten all shield hardware.
Install Blade
Parts Required: Upper Plate w/ 20 mm pilot, Lower Plate, 10 mm Nut
w/L.H. threads, 2 x 25 mm Cotter Pin, Blade.
1. Install upper plate (D) on splined PTO shaft, pilot side down.
Blade installation requires Upper Plate (D) with 20 mm pilot.
2. Install Blade (K) on upper plate pilot. Blades must be installed so
that rotation arrow on blade matches rotation of unit: teeth toward
direction of rotation (See debris shield decal). Secure blade with
Lower Plate (H), and 10 mm L.H. nut (G). Turn nut counter-clock-
wise on PTO shaft to tighten.
3. Align hole in upper plate with notch in gear housing, and insert
Locking Tool (L) to prevent splined shaft from turning. Arrow on
gear housing points to notch. Tighten 10 mm nut securely.
4. Insert Cotter Pin (F) in hole in PTO shaft, and bend pin legs around
shaft counterclockwise to retain 10 mm nut.
IMPORTANT
Never reuse a cotter pin - install a new cotter pin each time a blade
is installed or replaced.
5. Remove locking tool.
D
20
L
K
GF
H
D
K
H
G
F
L

Grass Trimmer/Brush CuTTer 13
OperatOr'sManual
C
A
u-handle InstallatIon
Parts Required: U-Handle, Clamp w/screws, 8 mm x 55 mm hex
bolt,
8 mm at washer
1. Install upper U-Handle and bracket on lower bracket with one
(1) 8mm x 55mm bolt (A) and (1) large circular washer. Do not
tighten bolt securely until nal adjustments are completed.
2. Loosen upper (2) U-handle clamp screws (B), and position U-
handle as shown.
3. Lightly tighten 8mm bolt (A) and clamp screws (B) to hold U-
handle in position until nal adjustments are completed.
4. Route throttle linkage and ignition lead assembly along shaft and
clip as shown.
5. Install throttle linkage cable into fan cover clip (C).
B
throttle lInkage and IgnItIon leads
1. Close choke and remove air lter cover.
2. Place throttle linkage (A) through adjustment xture (B) and install
wire end into large carburetor throttle swivel hole (C). Check
throttle for freedom of movement and that wide open throttle / low
idle extremes are adjusted properly. The throttle linkage must be
adjusted by moving the adjustment xture (B). Consult with your
Echo Dealer for correct adjustment procedure.
3. Connect 2 ignition stop leads (D,E) from throttle cable tubing to 2
ignition leads (D,E) on engine.
A
B
D
EF
C

14
F
balance and adjust unIt
1. Loosen harness clamp screw.
2. Put on harness and attach unit to harness.
3. Slide harness clamp up (A) or down until unit balances with head
approximately 50-75 mm (2 -3 in.) from the ground.
4. Tighten harness clamp screw.
5. Loosen upper U-Handle clamp screws (B), and position U-Handle
for comfortable operation.
6. Tighten U-Handle clamp screws and 8 mm clamp bolt securely.
A
B
4. Secure ignition leads against engine housing with clip (F).
5. Install air lter and cover.
operatIon
WARNING
Moving parts can amputate ngers or cause severe injuries. Keep hands, clothing and loose objects away from all
openings. Always stop engine, disconnect spark plug, and make sure all moving parts have come to a complete
stop before removing obstructions, clearing debris, or servicing unit. Allow unit to cool before performing service.
Wear gloves to protect hands from sharp edges and hot surfaces.
WARNING
Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a poison gas. Breathing CO can cause unconscious-
ness, serious injury, or death. Exhaust can cause serious burns. ALWAYS position unit so that exhaust is directed
away from your face and body.

Grass Trimmer/Brush CuTTer 15
OperatOr'sManual
WARNING
Operation of this equipment may create sparks that can start res. This unit is equipped with a spark arrestor to
prevent discharge of hot particles from the engine. Metal blade use also can create sparks if the blade strikes rocks,
metal, or other hard objects. Contact local re authorities for laws or regulations regarding re prevention require-
ments.
NOTE
e Barrier Bar is used to restrict rearward movement of the unit. e Barrier Bar is NOT A HANDLE and should
not be gripped when using or carrying the unit.
operatIon wIth blades
Preparing the Trimmer/Brush Cutter for Blade Use
WARNING
Blade use DEMANDS specic Brush Cutter conguration. Operation without specied shield, barrier bar or U-
handle, and harness can result in serious personal injury. Follow installation instructions included in optional kits.
TO USE
THESE BLADES
Pro Maxi-Cut
Grass/Weed
Blade
Rigid Plastic
Tri-Cut
Grass/Weed Blade
Metal Blade
Loop Handle, w/or
w/o Barrier Bar
U-Handle or Loop Handle
w/Barrier Bar
U-Handle or Loop Handle
w/Barrier Bar
Plastic Shield Plastic Shield Metal Shield
Harness Harness Harness
Upper Plate &
Flat Washer
Upper Plate
& Glide Cup
Upper/Lower
Blade Plates
Hex Nut Hex Nut Hex Nut
You
must
install
these
parts!
New Cotter Pin New Cotter Pin New Cotter Pin
• WARNING! DO NOT INSTALL BLADES ON GT (CURVED SHAFT) MODEL TRIMMERS
• Arbor diameter of Upper Blade Plate must match arbor diameter of blades.
• New cotter pin required each time blade is installed.
• Brush Cutters over 16.5 lbs (7.5 kg) dry weight (weight w/o fuel) require a double shoulder harness
blade set-up guIde

16
blade selectIon
WARNING
The type of Blade used MUST be matched to the type and size of material cut. An improper or dull blade can cause
serious personal injury. Blades MUST be sharp. Dull blades increase the chance of kick-out and injury to yourself
and bystanders.
Plastic/Nylon Grass/Weed Blades may be used where ever the nylon
line head is used. DO NOT use this blade for heavy weeds or brush!
8 Tooth Grass and Weed Blade is designed for grass, garden debris
and thick weeds up to 19 mm (3/4”) diameter. DO NOT use this blade
for brush or heavy woody growth.
80 Tooth Brush Blade is designed for cutting brush and woody growth
up to 13 mm (1/2 in.) diameter.
22 Tooth Clearing Blade is designed for dense thickets and saplings
up to 64 mm (2-1/2 in.) diameter.
Use Shoulder/Waist Harness Use of the Shoulder/Waist Harness is
recommended for ALL Trimmer/Brush Cutter use, not just Blade oper-
ation. The Shoulder/Waist Harness when used in a trimming operation
with nylon line head suspends the trimmer from the operator's shoulder
and reduces operator fatigue.

Grass Trimmer/Brush CuTTer 17
OperatOr'sManual
fuel
NOTICE: Use of unmixed, improperly mixed, or fuel older than 90 days, (stale fuel), may cause hard starting, poor
performance, or severe engine damage and void the product warranty. Read and follow instructions in the Storage
section of this manual.
WARNING
Alternative fuels, such as E-15 (15% ethanol), E-85 (85% ethanol) or any fuels not meeting ECHO requirements
are NOT approved for use in ECHO 2-stroke gasoline engines. Use of alternative fuels may cause performance
problems, loss of power, overheating, fuel vapor lock, and unintended machine operation, including, but not limited
to, improper clutch engagement. Alternative fuels may also cause premature deterioration of fuel lines, gaskets,
carburetors and other engine components.
Fuel Requirements
Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be good quality. Gasoline may contain up
to 10% Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing methanol (wood alco-
hol) is NOT approved.
Two Stroke Oil - A two-stroke engine oil meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FD Standards must be
used. Echo brand premium Power Blend X TM Universal 2-Stroke Oil meets these standards. Engine problems due to
inadequate lubrication caused by failure to use an ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FD certied oil, such as
Echo premium Power Blend X TM, will void the two-stroke engine warranty.
IMPORTANT
Echo premium Power Blend X TM Universal 2-Stroke Oil may be mixed at 50:1 ratio for application in all Echo
engines sold in the past regardless of ratio specied in those manuals.
NOTE
In case of Emergency, pull up on the Quick Release Collar to dis-
connect the trimmer from the harness.
During blade operation, the same fatigue reduction is achieved. Safety
to the operator is also enhanced by reducing the possibility of blade
contact with the operator's hands and feet by restricting trimmer move-
ment.

18
Handling Fuel
DANGER
Fuel is VERY ammable. Use extreme care when mixing, storing or handling or serious personal injury may result.
• Use an approved fuel container.
• DO NOT smoke near fuel.
• DO NOT allow ames or sparks near fuel.
• Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize.
• NEVER refuel a unit when the engine is HOT or RUNNING!
• DO NOT ll fuel tanks indoors. ALWAYS ll fuel tanks outdoors over bare ground.
• DO NOT overll fuel tank. Wipe up spills immediately.
• Securely tighten fuel tank cap and close fuel container after refueling.
• Inspect for fuel leakage. If fuel leakage is found, do not start or operate unit until leakage is repaired.
• Move at least 3m (10 ft.) from refueling location before starting the engine.
Mixing Instructions
1. Fill an approved fuel container with half of the required amount of
gasoline.
2. Add the proper amount of 2-stroke oil to gasoline.
3. Close container and shake to mix oil with gasoline.
4. Add remaining gasoline, close fuel container, and remix.
IMPORTANT
Spilled fuel is a leading cause of hydrocarbon emissions. Some
states may require the use of automatic fuel shut-off containers to
reduce fuel spillage.
After use
• DO NOT store a unit with fuel in its tank. Leaks can occur. Return
unused fuel to an approved fuel storage container.
Storage - Fuel storage laws vary by locality. Contact your local gov-
ernment for the laws affecting your area. As a precaution, store fuel in
an approved, airtight container. Store in a well-ventilated, unoccupied
building, away from sparks and ames.
IMPORTANT
Stored fuel ages. Do not mix more fuel than you expect to use in
thirty (30) days, ninety (90) days when a fuel stabilizer is added.
IMPORTANT
Stored two-stroke fuel may separate. ALWAYS shake fuel con-
tainer thoroughly before each use.

Grass Trimmer/Brush CuTTer 19
OperatOr'sManual
startIng cold engIne
WARNING
The attachment will operate immediately when the engine starts,
and could result in possible serious injury. Keep movable parts of
the attachment away from objects that could become entangled or
thrown, and surfaces that could cause loss of control.
1. Stop Switch
Move stop switch button (A) forward away from the STOP posi-
tion.
2. Choke
Move choke lever (B) to Cold Start Position ( ).
3. Purge Bulb
Pump purge bulb (C) until fuel is visible and ows freely in the
clear fuel tank return line. Pump bulb an additional 4 or 5 times.
NOTE
Lightly place knee on drive shaft to stabilize unit during starting.
Do not apply excessive downward force or damage to unit can oc-
cur.
4. Recoil Starter
Lay the unit on a at area and keep movable attachment parts clear
of all obstacles. Firmly grasp right hand grip and throttle trigger
lockout with left hand and fully depress throttle trigger to wide
open position. Rapidly pull recoil starter handle/rope (D) until
engine res (or maximum ve [5] pulls).
5. Choke
After engine res (or 5 pulls), move choke lever back to Run
( ) position. Hold throttle trigger and throttle trigger lockout
fully depressed, and pull recoil starter starter handle/rope until
engine starts and runs. Release throttle trigger, and allow unit to
warm up at idle for several minutes.
NOTE
If engine does not start with choke in “Run” position after 5 pulls,
repeat instructions 2 - 5.
6. Throttle Trigger
After engine warm-up, gradually depress throttle trigger to increase
engine RPM to operating speed.
A
C
B
D

20
startIng warm engIne
The starting procedure is the same as Cold Start except DO NOT close
the choke, and do not hold throttle trigger fully depressed.
WARNING
The attachment should not move at idle, otherwise serious personal
injury may result.
NOTE
If attachment moves, readjust carburetor according to “Carburetor
Adjustment” instructions in this manual or see your ECHO Dealer.
1. Stop Switch
Move stop switch button (A) forward away from the STOP posi-
tion.
2. Purge Bulb
Pump purge bulb (C) until fuel is visible in the "Clear" fuel return
line.
NOTE
Lightly place knee on drive shaft to stabilize unit during starting.
Do not apply excessive downward force or damage to unit can oc-
cur.
3. Recoil Starter
Lay the unit on a at area and keep movable attachment parts clear
of all obstacles. Rapidly pull the recoil starter handle (D) until the
engine res.
NOTE
If engine does not start after 5 pulls, use Cold Start Procedure.
A
C
D