Echo SRM-225U manual

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x7722271404 / x772000164
SRM-225U
GRASS TRIMMER /
BRUSH CUTTER
Operator’s Manual
Burn Hazard
The muffler or catalytic muffler and surrounding cover may become extremely hot.
Always keep clear of exhaust and muffler area, otherwise serious personal injury may
occur.
The engine exhaust from this product contains chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm.
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.
Specifications, 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
accessories, and may not include all standard equipment.
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TABLE OF CONTENTS
SRM-225U
TABLE OF CONTENTS
Table of Contents .................................................................................................................................................................. 2
Introduction ............................................................................................................................................................................ 4
The Operator’s Manual ................................................................................................................................................... 4
The Safety Manual ......................................................................................................................................................... 4
Servicing Information ............................................................................................................................................................. 4
Parts/Serial Number ....................................................................................................................................................... 4
Service............................................................................................................................................................................ 4
Echo Consumer Product Support ................................................................................................................................... 4
Warranty Registration ..................................................................................................................................................... 4
Additional or Replacement Manuals ............................................................................................................................... 5
Safety..................................................................................................................................................................................... 5
Manual Safety Symbols and Important Information........................................................................................................ 5
International Symbols ..................................................................................................................................................... 6
Personal Condition and Safety Equipment ..................................................................................................................... 7
Equipment ...................................................................................................................................................................... 9
Emission Control (Exhaust &amp; Evaporative) .......................................................................................................................... 10
EPA 2010 and Later and/or C.A.R.B. TIER III .............................................................................................................. 10
Description ........................................................................................................................................................................... 11
Contents .............................................................................................................................................................................. 13
Assembly ............................................................................................................................................................................. 14
Plastic Shield Installation .............................................................................................................................................. 14
Nylon Line Head Installation ......................................................................................................................................... 14
To Advance Trimmer Line ............................................................................................................................................ 15
Remove Nylon Line Head............................................................................................................................................. 15
Blade Installation .......................................................................................................................................................... 15
U-Handle Installation .................................................................................................................................................... 17
Throttle Linkage and Ignition Leads ............................................................................................................................. 17
Balance and Adjust Unit ............................................................................................................................................... 18
Operation ............................................................................................................................................................................. 19
Operation With Blades.................................................................................................................................................. 19
Blade Selection............................................................................................................................................................. 20
Fuel............................................................................................................................................................................... 21
Starting Cold Engine..................................................................................................................................................... 23
Starting Warm Engine .................................................................................................................................................. 24
Stopping Engine ........................................................................................................................................................... 24
Maintenance ........................................................................................................................................................................ 25
Skill Levels.................................................................................................................................................................... 25
Maintenance Intervals .................................................................................................................................................. 25
Air Filter ........................................................................................................................................................................ 26
Fuel Filter...................................................................................................................................................................... 26
Spark Plug .................................................................................................................................................................... 27
Cooling System ............................................................................................................................................................ 27
Exhaust System............................................................................................................................................................ 28
Carburetor Adjustment ................................................................................................................................................. 29
Lubrication .................................................................................................................................................................... 30
Nylon Line Head Disassembly Instructions .................................................................................................................. 31
Nylon Line Replacement .............................................................................................................................................. 31
Sharpening Metal Blades ............................................................................................................................................. 32
Troubleshooting ................................................................................................................................................................... 34
Storage ................................................................................................................................................................................ 35
Long Term Storage (Over 30 Days) ............................................................................................................................. 35
Specifications....................................................................................................................................................................... 36
Warranty Statements ........................................................................................................................................................... 37
Notes ................................................................................................................................................................................... 39
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SRM-225U
INTRODUCTION
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 find both
easy to use and full of helpful operating tips and SAFETY messages.
The Operator’s Manual
Keep it in a safe place for future reference. Contains specifications and information for safety, operation,
maintenance, storage and assembly specific 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.
SERVICING INFORMATION
Parts/Serial Number
Genuine ECHO Parts and ECHO REPOWER™ Parts and
Assemblies for your ECHO products are available only from an
Authorized ECHO Dealer. When you do need to buy parts always
have the Model Number and Serial Number of the unit with you. You
can find these numbers on the engine housing. For future
reference, write them in the space provided below.
Model No. _________________ SN. ___________________
Service
Service of this product during the warranty period must be performed by an Authorized ECHO Service
Dealer. For the name and address of the Authorized ECHO Service Dealer nearest you, ask your retailer or
call: 1-800-432-ECHO (3246). Dealer information is also available on our Web Site. When presenting your
unit for Warranty service/repairs, proof of purchase is required.
Echo Consumer Product Support
If you require assistance or have questions concerning the application, operation or maintenance of this
product you may call the ECHO Consumer Product Support Department at 1-800-673-1558 from 8:30 am to
4:30 pm (Central Standard Time) Monday through Friday. Before calling, please know the model and serial
number of your unit.
Warranty Registration
To ensure trouble free warranty coverage it is important that you register your ECHO equipment on-line at
www.echo-usa.com or by filling out the warranty registration card supplied with your unit. Registering your
product confirms your warranty coverage and provides a direct link between you and ECHO if we find it
necessary to contact you.
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SAFETY
Additional or Replacement Manuals
Replacement Operator, Safety Manuals, and Parts Catalogs
are available from your ECHO dealer or at www.echo-usa.com
or by contacting ECHO Inc., 400 Oakwood Road, Lake Zurich,
IL 60047 (800-673-1558). Always check the ECHO Web Site for
updated information.
SRM-225U
For more information
scan this QR code.
Safety Videos are available from your Echo dealer. A $5.00 shipping charge will be required for each video.
SAFETY
Manual Safety Symbols and Important Information
Throughout this manual and on the product itself, you will find safety alerts and helpful, informational
messages preceded by symbols or key words. The following is an explanation of those symbols and key
words and what they mean to you.
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.
The safety alert symbol accompanied by the word “WARNING” calls attention to an act or condition
which CAN lead to serious personal injury or death if not avoided.
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.
The enclosed message provides information necessary for the protection of the unit.
Note: This enclosed message provides tips for use, care and maintenance of the unit.
CIRCLE AND SLASH SYMBOL
This symbol means the specific action shown is prohibited. Ignoring these prohibitions can result
in serious or fatal injury.
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SAFETY
International Symbols
Symbol
Description
Symbol
Description
Symbol
Description
Symbol
Description
Warning, See
Operator’s
Manual
Carburetor
Adjustment High speed
mixture
DO NOT allow
flames or
sparks near fuel
Ignition
ON / OFF
Wear eye, ear
and head
protection
Carburetor
Adjustment Idle speed
DO NOT smoke
near fuel
Primer Bulb
Wear hand
and foot
protection
Carburetor
Adjustment Low speed
mixture
Choke Control
“Run” Position
(Choke Open)
Choke Control
“Cold Start”
Position (Choke
Closed)
Safety/Alert
Emergency
Stop
Keep feet away
from blade
Rotating Cutting
Attachment
Hot Surface
Fuel and oil
mixture
AVOID KICKOUT.
Keep bystanders at least 15 meters
(50 feet) away.
Keep bystanders and helpers
away 15 m (50 ft.).
Thrown
objects
Direction of
blade
Beware Thrown Objects
Wear Eye Protection
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SAFETY
SRM-225U
Personal Condition and Safety Equipment
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.
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
Eye protection that meets ANSI Z87.1, CE, or CSA Z94.3 requirements must be worn whenever you operate
the unit.
Hand Protection
Wear no-slip, heavy duty work gloves to improve your grip on the handles. Gloves also reduce the
transmission of machine vibration to your hands.
Breathing Protection
Wear a face mask to protect against dust.
Hearing Protection
ECHO recommends wearing hearing protection whenever unit is used.
Proper Clothing
Wear snug fitting, 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.
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SAFETY
The ignition components of this machine generate an electromagnetic field 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 information, ECHO does not recommend the use of ECHO
products by anyone who has a pacemaker.
Vibration and Cold
It is believed that a condition called Raynaud’s Phenomenon,
which affects the fingers of certain individuals, may be brought
about by exposure to vibration and cold. Exposure to vibration
and cold may cause tingling and burning sensations, followed
by loss of color and numbness in the fingers. 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 exercises during frequent work breaks, and
also by not smoking.
• Limit the hours of operation. Try to fill each day with jobs where operating the unit or other hand-held
power equipment is not required.
• If you experience discomfort, redness, and swelling of the fingers followed by whitening and loss of feeling,
consult your physician before further exposing yourself to cold and vibration.
Repetitive Stress Injuries
It is believed that overusing the muscles and tendons of the
fingers, 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 finger.
• Take periodic breaks to minimize repetition and rest your hands.
• Reduce the speed and force with which you do the repetitive movement.
• 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 fingers, hands, wrists, or arms. The sooner RSI/CTS is diagnosed, the more likely permanent nerve
and muscle damage can be prevented.
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SAFETY
SRM-225U
All over head electrical conductors and communications wires can have electricity flow with high
voltages. This unit is not insulated against electrical current. Never touch wires directly or indirectly,
otherwise serious injury or death may result.
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
• Always hold throttle handle and support handle with thumbs
and fingers tightly 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 ladders. Do not over reach.
Avoid Hot Surfaces
• Keep exhaust area clear of flammable debris. Avoid contact
during and immediately after operation.
For more information
scan this QR code.
Equipment
Use only ECHO approved attachments. Serious injury may result from the use of a non-approved
attachment combination. 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 missing.
• Check that the cutting attachment is firmly attached and in safe operating condition.
• Check that handle and harness (if included) are adjusted for safe, comfortable operation. See Assembly
Section for proper adjustment.
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EMISSION CONTROL (EXHAUST &amp; EVAPORATIVE)
Moving parts can amputate fingers 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.
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.
EMISSION CONTROL (EXHAUST &amp; EVAPORATIVE)
EPA 2010 and Later and/or C.A.R.B. TIER III
The emission control system for the engine is EM (engine modification)
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). The fuel tank/fuel line
emission control system is EVAP (evaporative emissions). Evaporative
emissions for California models are only applicable to fuel tanks.
An Emission Control Label is located on the engine. (This is an
EXAMPLE ONLY, information on label varies by engine FAMILY).
Product Emission Durability (Emission Compliance Period)
The 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 followed as listed in the Maintenance Section of this manual.
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DESCRIPTION
SRM-225U
DESCRIPTION
Locate the safety decal(s) on your unit. Make sure the decal(s) is legible and that you understand and follow
the instructions on it. If a decal cannot be read, a new one can be ordered from your ECHO dealer. See
PARTS ORDERING instructions for specific information.
14
22
12
15
16
21
17
20
13
18
19
3
4
6
2
5
7
1
8
9
11
10
Hot Label
Metal Shield Label
Shaft Label
10
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DESCRIPTION
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
acceleration, press trigger gradually for best operating technique.
5. DRIVE SHAFT ASSEMBLY - Includes U-Handle, Gear Housing Assembly, 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&quot; 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 Assembly just above the cutting attachment. Helps protect the operator by deflecting 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 &amp; 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. RECOIL STARTER HANDLE - Pull handle slowly until starter engages, then quickly and firmly. When
engine starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.
17. SPARK ARRESTOR MUFFLER OR SPARK ARRESTOR MUFFLER WITH CATALYST - The muffler or
catalytic muffler controls exhaust noise and emission. The spark arrestor screen prevents hot, glowing
particles of carbon from leaving the muffler. Keep exhaust area clear of flammable debris.
18. FUEL TANK - Contains fuel and fuel filter.
19. FUEL TANK CAP - Covers and seals fuel tank opening.
20. 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.
21. AIR CLEANER - Contains replaceable filter element.
22. 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 flows freely in the clear fuel tank return
line. Pump purge bulb an additional 4 or 5 times.
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CONTENTS
SRM-225U
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 - U-handle assembly
____ - 1, Operator’s Manual
____ - 1, Safety Manual
____ - 1, Warranty Registration Card
____ - 1, Emission Control Warranty Statement
____ - 1, Plastic Shield
____ -
Assembly Tool(s)
____ - 1, Nylon Trimmer Head
____ - 1, 8 Tooth Weed/Grass Blade
____ - 1, Safety Glasses
____ - 1, Echo Power Blend XTM 2-Stroke Oil Sample
____ - 1, Shield Plate
____ - 3, 5mm x 16mm Screws (shield mounting
____ - 1, 8mm x 55mm Bolt
____ - 1, Flat Washer
____ - 2, Cable Clips
____ - 3, 5mm x 10mm 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
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ASSEMBLY
ASSEMBLY
Plastic Shield Installation
B
(Nylon line operation)
Parts Required:
Plastic Debris Shield, Shield Plate,
three (3) 5 x 16 mm screws.
F
A
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.
E
D
C
1. Align hole in upper plate (A) with notch in gear housing (B), and insert locking tool (G) to prevent splined
shaft from turning. Arrow on gear housing flange points to notch location.
2. Remove cotter pin (C), L.H. blade nut (D), lower plate (E),
and upper plate (A) from PTO shaft (F). Turn blade nut
clockwise to remove.
H
3. Remove locking tool (G). Retain lower plate (E) and blade
nut (D), for future use with blade conversions.
4. Align plastic debris shield (H) with the drive shaft, and install
on the bottom of the gear housing flange.
5. Place shield plate (I) on shield, align holes and install three
(3) screws.
6. Replace upper plate (A) on PTO shaft (F).
Nylon Line Head Installation
Parts Required:
A
I
G
Nylon Line Head.
F
Wear Gloves or personal injury may result:
• Cutoff knife is sharp.
• Gearcase and surrounding area may be hot.
A
1. Make sure plastic debris shield (H) is properly aligned, and
upper plate (A) is installed on splined PTO shaft (F).
2. Align hole in upper plate (A) with notch in gear housing (B), and insert locking tool (G) to prevent splined
shaft from turning.
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ASSEMBLY
SRM-225U
3. Thread line head (J) onto PTO shaft by turning it
counter-clockwise until head is tight against upper plate (A).
G
4. Remove locking tool (G).
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.
J
Note: Your nylon line head may appear different than nylon line head shown.
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
G
Note: Do not disassemble nylon line head.
1. Align locking hole in upper plate with notch in edge of gear
housing and insert head locking tool (G).
2. Remove line head (J) by turning it clockwise until head is
completely off of shaft.
J
3. Remove locking tool (G).
Blade Installation
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: includes U-Handle, and necessary blade conversion parts. Blades must be selected for type of
cutting being performed. See “Blade Selection.”
Install Metal Shield
Parts Required:
H
G
Metal Shield, Shield Bracket,
3 - 5 x 16 mm screws (metal shield
to gear housing).
2 - 5 x 8 mm screws, 2 - 5 mm nuts,
2 - 5 mm lockwashers, (bracket to
shield).
2 - 5 mm nuts, 2 - 5 mm lockwashers
(bracket to gear housing)
J
1. If installed remove nylon line head, upper fixing plate, shield
plate, and plastic shield.
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ASSEMBLY
a. Align locking hole in upper plate with notch in edge of gear housing and insert head locking tool (G).
b. Remove line head (J) by turning it clockwise until head is completely off of shaft.
c. Remove locking tool (G).
d. Remove three screws holding shield plate and plastic shield (H) to gear housing.
e. Retain line head, upper fixing plate, shield plate, and plastic shield for conversion back to nylon line
head operation.
2. Align hole in upper plate (A) with notch in gear housing (B),
and insert locking tool to prevent splined shaft from turning.
Arrow on gear housing flange points to notch location.
B
3. Remove split pin (C), L.H. blade nut (D), lower plate (E), and
upper plate (A) from PTO shaft (F). Turn blade nut clockwise
to remove.
4. Remove locking tool (G).
F
A
E
C
D
5. Loosely attach bracket (K) to shield (L) and attach shield to
bottom of gear housing (B) with hardware provided.
B
K
6. Tighten all shield hardware.
L
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 (A) on splined PTO shaft, pilot side down.
Blade installation requires Upper Plate (A) with 20 mm pilot.
2. Install Blade (M) 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 (E), and 10 mm L.H.
nut (D). Turn nut counter-clockwise on PTO shaft to tighten.
3. Align hole in upper plate with notch in gear housing, and
insert Locking Tool (G) to prevent splined shaft from turning.
Arrow on gear housing points to notch. Tighten 10 mm nut
securely.
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G
A
M
E
D
C
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ASSEMBLY
SRM-225U
4. Insert Cotter Pin (C) in hole in PTO shaft, and bend pin legs
around shaft counterclockwise to retain 10 mm nut.
G
A
20
Never reuse a cotter pin - install a new cotter pin each time a blade
is installed or replaced.
5. Remove locking tool (G).
E
M
D
C
U-Handle Installation
Parts Required:
U-Handle, Clamp w/screws, 8 mm x 55 mm hex
bolt, 8 mm flat washer
N
O
1. Install upper U-Handle and bracket on lower bracket with
one (1) 8mm x 55mm bolt (N) and (1) large circular washer.
Do not tighten bolt securely until final adjustments are
completed.
2. Loosen upper (2) U-handle clamp screws (O), and position
U-handle as shown.
3. Lightly tighten 8mm bolt (N) and clamp screws (O) to hold
U-handle in position until final 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), if
required.
C
Throttle Linkage and Ignition Leads
D
1. Close choke and remove air filter cover.
2. Place throttle linkage (A) into adjustment fixture (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
nut (D). Consult with your Echo Dealer for correct
adjustment procedure.
3. Tighten nut (E).
16
A
C
E
B
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ASSEMBLY
4. Connect 2 ignition stop leads (F, G) from throttle cable
tubing to 2 ignition leads (F, G) on engine.
F
H
G
5. Secure ignition leads against engine housing with clips
(H, I).
I
6. Install air filter and cover.
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.
B
4. Tighten harness clamp screw.
5. Loosen upper U-Handle clamp screws (B), and position
U-Handle for comfortable operation.
A
6. Tighten U-Handle clamp screws and 8 mm clamp bolt
securely.
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OPERATION
SRM-225U
OPERATION
Moving parts can amputate fingers 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.
Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a poison gas. Breathing CO can cause
unconsciousness, serious injury, or death. Exhaust can cause serious burns. ALWAYS position unit
so that exhaust is directed away from your face and body.
Operation of this equipment may create sparks that can start fires. This unit is equipped with a spark
arrestor to prevent discharge of hot particles from the engine. Metal cutters can also create sparks if
the cutter strikes rocks, metal, or other hard objects. Contact local fire authorities for laws or
regulations regarding fire prevention requirements.
Operation With Blades
Blade use DEMANDS specific Brush Cutter configuration. Operation without specified shield, barrier
bar or U-handle, and harness can result in serious personal injury. Follow installation instructions.
TO USE
THESE
BLADES
You
must
install
these
parts!
Pro Maxi-Cut
Grass/Weed
Blade
Rigid Plastic
Tri-Cut
Grass/Weed Blade
Metal Blade
Support Handle, w/or
w/o Barrier Bar
U-Handle or Support
Handle
w/Barrier Bar
U-Handle or Support
Handle
w/Barrier Bar
Plastic Shield
Plastic Shield
Metal Shield
Harness
Harness
Harness
Upper Plate &amp;
Flat Washer
Upper Plate
&amp; Glide Cup
Upper/Lower
Blade Plates
Hex Nut
Hex Nut
Hex Nut
New Cotter Pin
New Cotter Pin
New Cotter Pin
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.
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OPERATION
Note: The Barrier Bar is used to restrict rearward movement of the unit. The Barrier Bar is NOT A HANDLE
and should not be gripped when using or carrying the unit.
Blade Selection
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 Weed/Grass 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 operation. 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.
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 movement.
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OPERATION
SRM-225U
Note: In case of Emergency, pull up on the Quick Release
Collar to disconnect the trimmer from the harness.
Fuel
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 alcohol) is NOT approved. ECHO brand Power Fuel™ is 93 octane, ethanol-free fuel
premixed with ECHO Red Armor&reg; engine oil at 50:1 ratio. Use of ECHO Power Fuel™ is recommended to
extend engine life in all air-cooled 2-stroke and 2/4-stroke hybrid engines.
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™ 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 certified oil, such as Echo premium Power Blend X™, will void the two-stroke engine warranty.
Echo premium Power Blend X™ Universal 2-Stroke Oil may be mixed at 50:1 ratio for application in all Echo
engines sold in the past regardless of ratio specified in those manuals.
Handling Fuel
Fuel is VERY flammable. 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 flames 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 fill fuel tanks indoors. ALWAYS fill fuel tanks outdoors over bare ground.
• DO NOT overfill fuel tank. Wipe up spills immediately.
• Securely tighten fuel tank cap and close fuel container after refueling.
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OPERATION
• 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.
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.
For more information
scan this QR code.
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 government 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 flames.
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.
Stored two-stroke fuel may separate. ALWAYS shake fuel container thoroughly before each use.
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OPERATION
SRM-225U
Starting Cold Engine
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.
A
1. Stop Switch
Move stop switch button (A) forward, away from the STOP
position.
2. Choke
Move choke lever (B) to Cold Start Position (
).
3. Purge Bulb
Pump purge bulb (C) until fuel is visible and flows freely in the
clear fuel tank return line. Pump bulb an additional 4 or 5
times.
B
Note: Lightly place knee on drive shaft to stabilize unit during
starting. Do not apply excessive downward force or
damage to unit can occur.
4. Recoil Starter
C
Lay the unit on a flat 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 fires (or
maximum five [5] pulls).
5. Choke
After engine fires (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.
D
6. Throttle Trigger
After engine warm-up, gradually depress throttle trigger to
increase engine RPM to operating speed.
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OPERATION
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.
A
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
position.
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 occur.
C
3. Recoil Starter
Lay the unit on a flat area and keep movable attachment parts
clear of all obstacles. Rapidly pull the recoil starter handle (D)
until the engine fires.
Note: If engine does not start after 5 pulls, use Cold Start
Procedure.
D
Stopping Engine
1. Throttle
Release throttle and allow engine to return to idle before
shutting off engine.
2. Stop Switch
A
Move stop switch button (A) backward to STOP position.
If engine does not stop when stop switch is moved to STOP
position, close choke - COLD START position - to stall
engine. Have your ECHO dealer repair stop switch before using unit again.
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MAINTENANCE
SRM-225U
MAINTENANCE
Moving parts can amputate fingers 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.
Your ECHO unit is designed to provide many hours of trouble free service. Regular scheduled maintenance
will help your unit achieve that goal. If you are unsure or are not equipped with the necessary tools, you may
want to take your unit to an ECHO Service Dealer for maintenance. To help you decide whether you want to
DO-IT-YOURSELF or have the ECHO Dealer do it, each maintenance task has been graded. If the task is
not listed, see your ECHO Dealer for repairs.
Skill Levels
Level 1 = Easy to do. Common tools may be required.
Level 2 = Moderate difficulty. Some specialized tools may be required.
ECHO offers REPOWERTM Maintenance Kits and Parts to make your maintenance job easier.
Maintenance Intervals
COMPONENT/SYSTEM
MAINTENANCE
PROCEDURE
REQ’D
SKILL
LEVEL
DAILY
OR
BEFORE
USE
EVERY
REFUEL
3
MONTHS
YEARLY
Air Filter
Inspect/Clean
1
I/C*
Choke Shutter
Inspect/Clean
1
I/C
Fuel Filter
Inspect/Replace
1
I*
I/R*
Fuel Cap Gasket
Inspect/Replace
1
I*
R*
Fuel System
Inspect/Replace
1
Spark Plug
Inspect/Clean
1
Cooling System
Inspect/Clean
2
Muffler Spark Arrestor
Inspect/Clean/Replace
2
I/C/R*
Cylinder Exhaust Port
Inspect/Clean/Decarbon
2
I/C
Drive Shaft
(Flex Cable Models)
Grease
2
I (1)
Gear Housing
Grease
2
I (2)
Recoil Starter Rope
Inspect/Clean
1
I/C*
Screws/Nuts/Bolts
Inspect/Tighten/Replace
1
I*
I*
R*
I*
I/C/R*
I/C
MAINTENANCE PROCEDURE LETTER CODES: I = INSPECT, R = REPLACE, C = CLEAN
IMPORTANT NOTE - Time intervals shown are maximum. Actual use and your experience will determine the
frequency of required maintenance.
MAINTENANCE PROCEDURE NOTES:
(1) Apply POWER BLENDXTM grease every 25 hours of use.
(2) Apply POWER BLENDXTM grease every 50 hours of use.
* Replacement is recommended based on the finding of damage or wear during inspection.
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MAINTENANCE
Air Filter
Level 1.
Parts Required:
REPOWERTM AIR &amp; FUEL FILTER KIT.
1. Close choke (Cold Start Position [
]). This prevents dirt
from entering the carburetor throat when the air filter is
removed. Brush accumulated dirt from air cleaner area.
2. Remove air filter cover. Brush dirt from inside cover.
3. Replace filter if it is damaged, fuel soaked, very dirty, or the
rubber sealing edges are deformed.
• Lightly brush debris from filter.
• Soak heavily soiled filters in water/detergent solution to loosen dirt, then brush lightly.
• Rinse with clean water and allow to dry completely before reuse.
4. Install air filter in air filter case.
5. Install air filter cover.
Fuel Filter
Level 1.
Parts Required:
REPOWERTM AIR &amp; FUEL FILTER KIT.
Fuel is VERY flammable. Use extreme care when mixing,
storing or handling, or serious personal injury may result.
1. Use a clean rag to remove loose dirt from around fuel cap
and empty fuel tank.
2. Use a hook to pull the fuel line and filter from the tank.
3. Remove the filter from the line and install the new filter.
Note: Federal EPA regulations require all model year 2012 and later gasoline powered engines produced for
sale in the United States to be equipped with a special low permeation fuel supply hose between the
carburetor and fuel tank. When servicing model year 2012 and later equipment, only fuel supply
hoses certified by EPA can be used to replace the original equipment supply hose. Fines up to
$37,500 may be enforced for using an un-certified replacement part.
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MAINTENANCE
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Spark Plug
Level 2.
Parts Required:
REPOWERTM Tune-Up Kit
Use only NGK BPM-8Y spark plug (BPMR-8Y in Canada)
otherwise severe engine damage may occur.
.65 mm (.026 in.)
1. Remove spark plug and check for fouling, worn and rounded center electrode.
2. Clean the plug or replace with a new one. DO NOT sand blast to clean. Remaining sand will damage
engine.
3. Adjust spark plug gap by bending outer electrode.
4. Tighten spark plug to 150-170 kgf•cm (130-150 in•lbf).
Cooling System
Level 2.
Parts Required:
None if you are careful.
To maintain proper engine operating temperatures, cooling air must pass freely through the cylinder fin area.
This flow of air carries combustion heat away from the engine.
Overheating and engine seizure can occur when:
• Air intakes are blocked, preventing cooling air from reaching
the cylinder.
• Dust and grass build up on the outside of the cylinder. This
build up insulates the engine and prevents the heat from
leaving.
Removal of cooling passage blockages or cleaning of cooling
fins is considered “Normal Maintenance.” Any failure attributed
to lack of maintenance is not warranted.
1. Remove spark plug lead.
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MAINTENANCE
2. Remove air cleaner cover (A).
3. Remove engine cover (B).
B
A
DO NOT use a metal scraper to remove dirt from the cylinder fins.
4. Use brush to remove dirt from the cylinder fins.
5. Remove ignition wires from clip for cleaning.
6. Remove grass and leaves from the grid between the recoil
starter and fuel tank.
7. Assemble components in reverse order.
Exhaust System
Spark Arrestor Screen
Level 2.
Parts Required:
F
Spark Arrestor Screen, Gasket
1. Remove engine cover (B).
2. Place piston at Top Dead Center (TDC) to prevent
carbon/dirt from entering cylinder.
E
D
3. Remove spark arrestor screen cover (C), gaskets (D), (E),
and screen (F), from muffler body.
C
4. Clean carbon deposits from muffler components.
Note: When cleaning carbon deposit, be careful not to damage the catalytic element inside muffler.
5. Replace screen if it is cracked, plugged, or has holes burned through.
6. Assemble components in reverse order.
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MAINTENANCE
Exhaust Port Cleaning
SRM-225U
B
A
Level 2.
Parts Required:
As needed: Heat Shield
1. Remove spark plug lead from spark plug, and remove
engine cover.
2. Place piston at top dead center. Remove muffler (A) and
heat shield (B).
3. Use a wood or plastic scraping tool to clean deposits from
cylinder exhaust port.
Never use a metal tool to scrape carbon from the exhaust port. Do not scratch the cylinder or piston when
cleaning the exhaust port. Do not allow carbon particles to enter the cylinder.
4. Inspect heat shield, and replace if damaged.
5. Install heat shield and muffler.
6. Tighten muffler mounting bolts (or nuts) to 80-95 in•lbf
(90-110 kgf•cm).
7. Install engine cover and attach spark plug lead.
8. Start engine, and warm to operating temperature.
9. Stop engine, and re-tighten mounting bolts (or nuts) to
specifications.
Carburetor Adjustment
Level 2.
Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor
adjustments can be made. During the break-in period your engine performance will increase and exhaust
emissions will stabilize. Idle speed can be adjusted as required.
High Altitude Operation
This engine has been factory adjusted to maintain satisfactory starting, emission, and durability
performance up to 1,100 feet above sea level (ASL) (96.0 kPa). To maintain proper engine operation and
emission compliance above 1,100 feet ASL the carburetor may need to be adjusted by an authorized ECHO
service dealer.
If the engine is adjusted for operation above 1,100 feet ASL, the carburetor must be re-adjusted when
operating the engine below 1,100 feet ASL, otherwise severe engine damage may result.
Parts
Required:
28
None
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MAINTENANCE
Note: Every unit is run at the factory and the carburetor is set in compliance with emission regulations.
Carburetor adjustments, other than idle speed, must be performed by an authorized ECHO dealer.
1. Check idle speed and reset if necessary. If a tachometer is
available, idle speed screw (A) should be set to the
specifications found on “Specifications” page of this manual.
Turn idle screw (A) clockwise to increase idle speed; counter
clockwise to decrease idle speed.
A
When carburetor adjustment is completed, the cutting
attachment should not move at idle, otherwise serious
personal injury may result.
Lubrication
Level 1.
Parts
Required:
POWER BLENDXTM 8 oz. or Lithium Base
Grease.
Gear Housing
B
1. Clean all loose debris from gear case.
C
A
2. Remove plug (A) and check level of grease.
3. Add grease if necessary. DO NOT over-fill.
D
Drive Shaft (flex cable models)
1. Loosen two (2) screws (B) and remove center locating screw (C). Pull gear case and shield from drive
shaft housing.
2. Pull flexible cable from the drive shaft housing, wipe clean and re-coat with a thin coating [15 ml (1/2 oz.)]
of grease.
3. Slide the flexible cable back in the drive housing. DO NOT get dirt on the flex cable.
4. Install the gear housing and shield assembly.
Flat edge of washers (D) must be against drive shaft.
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MAINTENANCE
SRM-225U
Nylon Line Head Disassembly Instructions
A
Note: For normal use, Speed Feed&reg; head disassembly is not
necessary. However, if circumstances require
disassembly, follow these instructions.
B
1. Press top of locking tabs (A) on both sides of Speed
Feed&reg; head to release cover (B) from eyelet carrier(C).
2. Remove cover from eyelet carrier.
Nylon Line Replacement
C
For more information
scan this QR code.
Wear Gloves or personal injury may result:
• Cutoff knife is sharp.
• Gearcase and surrounding area may be hot.
1. Cut one piece of line to recommended length.
.080 (2.0 mm) dia. – 20’ (6 m)
.095 (2.4 mm) dia. – 20’ (6 m)
2. Align arrows on top of knob with openings in eyelets.
3. Insert one end of trimmer line into an eyelet, and push line
equal distance through trimmer head.
4. Hold trimmer head while turning knob clockwise to wind line
onto spool until about 5” (13 cm) of each line remains
exposed.
Trimmer head is now fully loaded and ready for operation.
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MAINTENANCE
When the wear indicators located at the bottom of the
Speed-Feed&reg; head are worn smooth, or if holes appear,
replacement of the cover or the entire Speed-Feed&reg; head is
required.
Wear Indicators
Sharpening Metal Blades
Three styles of metal blades are approved for use on the ECHO
Brush Cutter. The 8-tooth blade can be sharpened during
normal maintenance. The clearing blade and 80 tooth blade
require professional service.
Before sharpening, CLOSELY inspect blade for cracks (look at
the bottom of each tooth and the center mounting hole closely),
missing teeth and bending. If ANY of these problems are
discovered, replace the blade.
When sharpening a blade, always remove the same amount of
materials from each tooth to maintain balance. A blade that is not balanced will cause unsafe handling due
to vibration and can result in blade failure.
1. File each tooth at a 30 degree angle a specific number of
times, eg. 4 strokes per tooth. Work your way around the
blade until all teeth are sharp.
2. DO NOT file the ‘gullet’ (radius) of the tooth with the flat file.
The radius must remain. A sharp corner will lead to a crack
and blade failure.
If an electric grinder is used, use care not to overheat teeth, do
not allow tips/tooth to glow red or turn blue. DO NOT place
blade in cooling water. This will change the temper of the blade and could result in blade failure.
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MAINTENANCE
SRM-225U
3. After sharpening teeth, check each tooth radius for evidence
of a square (sharp) corner. Use the round (rat tail) file to
renew the radius.
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TROUBLESHOOTING
TROUBLESHOOTING
ENGINE PROBLEM TROUBLESHOOTING CHART
Problem
Check
Remedy
Fuel strainer clogged
Fuel line clogged
Carburetor
Clean or replace
Clean or replace
See your Echo dealer
No fuel at cylinder
Carburetor
See your Echo dealer
Muffler wet with fuel
Fuel Mixture too rich
Open choke
Clean/replace air filter
Adjust carburetor
See your Echo dealer
No spark
Stop switch off
Electrical problem
Interlock switch
Turn switch to ON
See your Echo dealer
See your Echo dealer
Spark at plug
No spark
Spark gap incorrect
Covered with carbon
Fouled with fuel
Plug defective
Adjust to .65mm (0.026 in.)
Clean or replace
Clean or replace
Replace plug
Air filter
Air filter dirty
Normal wear
Clean or replace
Fuel filter
Fuel filter dirty
Contaminants/residues
in fuel
Replace
Fuel vent
Fuel vent plugged
Contaminants/residues
in fuel
Clean or replace
Spark Plug
Plug dirty/worn
Normal wear
Clean and adjust or replace
Carburetor
Improper adjustment
Vibration
Adjust
Cooling System
Cooling system
dirty/plugged
Extended operation in
dirty/dusty locations
Clean
Spark Arrestor
Screen
Spark arrestor screen
plugged
Normal wear
Replace
N/A
N/A
Internal engine problem
See your Echo dealer
Fuel at cylinder
Engine cranks starts hard/
doesn’t start
Spark at end of
plug wire
Engine does
not crank
Cause
No fuel at carburetor
Fuel at carburetor
Engine runs,
but dies or
does not
accelerate
properly
Status
Fuel vapors are extremely flammable and may cause fire and/or explosion. Never test for ignition
spark by grounding spark plug near cylinder plug hole, otherwise serious personal injury may
result.
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STORAGE
SRM-225U
STORAGE
During operation the muffler or catalytic muffler and surrounding cover become hot. Always keep
exhaust area clear of flammable debris during transportation or when storing, otherwise serious
property damage or personal injury may result.
Long Term Storage (Over 30 Days)
Do not store your unit for a prolonged period of time (30 days or longer) without performing protective
storage maintenance which includes the following:
1. Store unit in a dry, dust free place, out of the reach of children.
Do not store in enclosure where fuel fumes may accumulate or reach an open flame or spark.
2. Place the stop switch in the “OFF” position.
3. Remove accumulation of grease, oil, dirt and debris from exterior of unit.
4. Perform all periodic lubrication and services that are required.
5. Tighten all the screws and nuts.
6. Drain fuel tank completely. Press purge bulb 6-7 times to remove remaining fuel from carburetor then
drain the tank again. Close choke, start and run the engine until it stops due to lack of fuel.
7.
a. Allow engine to cool then remove the spark plug and pour 7 cc (1/4 oz.) of fresh, clean, two-stroke
engine oil into the cylinder through the spark plug hole.
b. Pull the recoil starter handle 2-3 times to distribute the oil inside the engine.
c. Observe the piston location through the spark plug hole. Pull the recoil handle slowly until the piston
reaches the top of its travel and leave it there.
8. Install the spark plug (do not connect ignition cable).
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SRM-225U
SPECIFICATIONS
SPECIFICATIONS
MODEL
SRM-225U
Length
1793 mm (70.6 in.)
Width
700 mm (27.5 in.)
Height
510 mm (20.1 in.)
Weight (dry) w/Cutter Head
5.98 kg (13.2 lb.)
Engine Type
Air cooled, two-stroke, single cylinder gasoline engine
Bore
32.2 mm (1.27 in.)
Stroke
26.0 mm (1.02 in.)
Displacement
21.2 cc (1.29 cu. in.)
Exhaust
Spark arrestor muffler or spark arrestor muffler with catalyst
Carburetor
Diaphragm w/purge pump
Ignition System
Flywheel magneto, capacitor discharge ignition type
Spark Plug
NGK BPM-8Y (Gap 0.65 mm (0.026 in.)
Fuel
Mixed (Gasoline and Two-stroke Oil)
Fuel/Oil Ratio
50 : 1 Power Blend XTM ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345- FD, two-stroke,
air-cooled engine oil.
Gasoline
Use 89 Octane unleaded. Do not use fuel containing methyl alcohol, more than 10% ethyl
alcohol or 15% MTBE. Do not use alternative fuels such as E-15 or E-85.
Oil
Power Blend XTM Premium Universal 2-Stroke Oil
Fuel Tank Capacity
0.44 lit. (14.9 US fl. oz.)
Starter System
Automatic Rewind Starter
Clutch
Centrifugal Type
Vibration Isolated System
Rubber cushion on engine mount (heavy duty). Rubber grip on front handle.
Operating Rod
25.0 mm aluminum Tube
Drive Shaft
6.35 mm (1/4 in.) flexible shaft
Gear Case Ratio
1.4:1 Reduction
Rotating Direction
Counter Clockwise; viewed from top
Cutter Head
Speed Feed&reg; Nylon line head (2-line) with .095 CrossfireTM Line capacity 6m (20 ft.)
Handle
U-Handle
Shoulder Harness
Standard
Idle Speed
2,750 RPM
Clutch Engagement Speed
3,800 RPM
Wide Open Throttle Speed (W.O.T.)
8,150 RPM
X7722271408
&copy; 3/2014 ECHO Inc.
35
WARRANTY STATEMENTS
SRM-225U
WARRANTY STATEMENTS
ECHO LIMITED WARRANTY STATEMENT FOR
PRODUCT SOLD IN USA AND CANADA BEGINNING 01/01/2010
ECHO'S RESPONSIBILITY
ECHO Incorporated’s Limited Warranty, provides to the original purchaser that this ECHO product is free from defects in material and workmanship.
Under normal use and maintenance from date of purchase, ECHO agrees to repair or replace at ECHO’s discretion, any defective product
free of charge at any authorized ECHO servicing dealer within listed below application time periods, limitations and exclusions. THIS LIMITED
WARRANTY IS ONLY APPLICABLE TO ECHO PRODUCTS SOLD BY AUTHORIZED ECHO DEALERS. IT IS EXTENDED TO THE ORIGINAL
PURCHASER ONLY, AND IS NOT TRANSFERABLE TO SUBSEQUENT OWNERS EXCEPT FOR EMISSION RELATED PARTS. Repair
parts and accessories replaced under this warranty are warranted only for the balance of the original unit or accessory warranty period. Any
damage caused by improper installation or improper maintenance is not covered by this warranty. All parts or products replaced under warranty
become the property of ECHO, Inc. This warranty is separate from the Emission control warranty statement supplied with your new product.
Please consult the Emission Control Warranty Statement for details regarding emission related parts. For a list of Authorized ECHO Dealers
refer to WWW.ECHO-USA.COM or call 1-800-432-ECHO.
OWNER’S RESPONSIBILITY
To ensure trouble free warranty coverage it is important that you register your ECHO equipment on-line at WWW.ECHO-USA.COMRUE\&iquest;OOLQJRXWWKHZDUUDQW\UHJLVWUDWLRQFDUGVXSSOLHGZLWK\RXUXQLW5HJLVWHULQJ\RXUSURGXFWFRQ&iquest;UPV\RXUZDUUDQW\FRYHUDJHDQGSURYLGHVDGLUHFW
OLQNLIZH&iquest;QGLWQHFHVVDU\WRFRQWDFW\RX
The owner shall demonstrate reasonable care and use, and follow preventative maintenance, storage, fuel and oil usage as prescribed in the
RSHUDWRU&para;VPDQXDO6KRXOGDSURGXFWGLI&iquest;FXOW\RFFXU\RXPXVWDW\RXUH[SHQVHGHOLYHURUVKLS\RXU(&amp;+2XQLWWRDQDXWKRUL]HG(&amp;+2VHUYLFLQJ
dealer for warranty repairs (within the applicable warranty period), and arrange for pick-up or return of your unit after the repairs have been
made. For your nearest authorized ECHO servicing dealer, call ECHO’s Dealer Referral Center, at 1-800-432-ECHO or you can locate an ECHO
servicing dealer at WWW.ECHO-USA.COM. Should you require assistance or have questions concerning ECHO’s Warranty Statement, you
can contact our Consumer Product Support Department at 1-800-673-1558 or contact us through the web at WWW.ECHO-USA.COM.
PRODUCT WARRANTY PERIOD
RESIDENTIAL APPLICATION
5 YEAR WARRANTY - All units for residential, or non-income producing use will be covered by this limited warranty for &iquest;YH \HDUV from
date of purchase.
EXCEPTIONS:
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are warranted for the OLIH of the product on parts only.
&amp;XWWLQJDWWDFKPHQWVVXFKDVEXWQRWOLPLWHGWREDUVFKDLQVVSURFNHWVEODGHVDQGQ\ORQWULPPHUKHDGVIRUUHVLGHQWLDORUQRQLQFRPH
producing use will be covered for failures due to defects in material or workmanship for a period of GD\V from original product
purchase date. Any misuse from contact with concrete, rocks, or other structures is not covered by this warranty.
(&amp;+2&para;V5DSLG/RDGHU6WULQJ+HDGFDUULHVDOLIHWLPHZDUUDQW\RQWKHOLQHORFNLQJV\VWHPSDUWVRQO\QRODERU5HIHUWR\RXURSHUDWRU&para;V
manual for string head installation and maintenance instructions.
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COMMERCIAL APPLICATION
1 YEAR WARRANTY - All Chain Saws, QuikVent Saws, and Cut-Off Saws for commercial, institutional, agricultural, industrial, or income
producing use will be covered by this limited warranty for one \HDU from the date of purchase.
2 YEAR WARRANTY - All other units for commercial, institutional, agricultural, industrial, or income producing use will be covered by this
limited warranty for two \HDUV from the date of purchase.
EXCEPTIONS:
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are warranted for the OLIH of the product on parts only.
&amp;XWWLQJDWWDFKPHQWVVXFKDVEXWQRWOLPLWHGWREDUVFKDLQVVSURFNHWVEODGHVDQGQ\ORQWULPPHUKHDGVIRUFRPPHUFLDOLQVWLWXWLRQDO
agricultural, industrial, rental, or income producing will be covered for failures due to defects in material or workmanship for a period
of GD\V from original product purchase date. Any misuse from contact with concrete, rocks, or other structures is not covered by
this warranty.
(&amp;+2&para;V5DSLG/RDGHU6WULQJ+HDGFDUULHVDOLIHWLPHZDUUDQW\RQWKHOLQHORFNLQJV\VWHPSDUWVRQO\QRODERU5HIHUWR\RXURSHUDWRU&para;V
manual for string head installation and maintenance instructions.
$OO 6%6HULHV DQG 352$77$&amp;+0(17 6(5,(6 6SOLW 6KDIW DWWDFKPHQWV FDUU\ WKH VDPH ZDUUDQW\ GXUDWLRQ DV WKH XQLWV WKH\ DUH
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RENTAL APPLICATION - 90 DAYS WARRANTY
8QLWVIRUUHQWDOXVHZLOOEHFRYHUHGDJDLQVWGHIHFWVLQPDWHULDODQGZRUNPDQVKLSIRUDSHULRGRIGD\VIURPWKHGDWHRISXUFKDVH
(&amp;+2&para;VOLDELOLW\XQGHUWKH&sup3;/LIHWLPH&acute;FRYHUDJHLVOLPLWHGWRIXUQLVKLQJSDUWVVSHFL&iquest;HGXQGHUWKH352'8&amp;7:$55$17&lt;3(5,2' section of
this warranty statement for &sup3;/LIH&acute;IUHHRIFKDUJHIRUDSHULRGRIWHQ\HDUVDIWHUWKHGDWHRIWKHFRPSOHWHXQLW&para;V&iquest;QDOSURGXFWLRQ
36
X7722271408
&copy; 3/2014 ECHO Inc.
SRM-225U
WARRANTY STATEMENTS
PURCHASED REPAIR PARTS, SHORT BLOCKS AND ACCESSORIES
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GD\FRPPHUFLDOLQVWLWXWLRQDODJULFXOWXUDOLQGXVWULDOLQFRPHSURGXFLQJRUUHQWDODSSOLFDWLRQZDUUDQW\
ATTENTION TWO-STROKE ENGINE POWER PRODUCT OWNERS
This ECHO two-stroke engine power product is a quality-engineered unit which has been manufactured to exact tolerances to provide superior
performance. To help ensure the performance of the unit, it is required to use two-stroke oil which meets the ISO-L-EGD Standard per ISO/CD
13738 and JASO M345FD Standards. (&amp;+23RZHU%OHQG7ZR6WURNH2LO LVDSUHPLXPWZRVWURNHRLOVSHFL&iquest;FDOO\IRUPXODWHGWRPHHW,62
L-EGD (ISO/CD 13738) and JASO M345FD Standards. The use of two-stroke oils designed for other applications, such as for outboard motors
or lawnmowers can result in severe engine damage, and will void your two-stroke engine limited warranty.
THIS WARRANTY DOES NOT COVER DAMAGE CAUSED BY:

/DFNRIOXEULFDWLRQRUHQJLQHIDLOXUHGXHWRWKHXVHRIWZRVWURNHRLOVthat do not meet the ISO-L-EGD (ISO/CD 13738) and JASO M345FD
Standards. Engine problems due to inadequate lubrication caused by failure to use an ISO-L-EGD compliant and JASO M345FD registered
oil, will void the two-stroke engine limited warranty. (&amp;+2 3RZHU %OHQG7ZR6WURNH 2LO meets the ISO-L-EGD and JASO M345FD
Standard. Emission related parts are covered for 5 years residential use or 2 years commercial use regardless of two-stroke oil used, per
the statement listed in the EPA or California Emission Defect Warranty Explanation.

'DPDJHFDXVHGE\XVHRIJDVRKROFRQWDLQLQJPHWKDQROZRRGDOFRKRORUJDVROLQHFRQWDLQLQJOHVVWKDQRFWDQH. Only use gasoline which
contains RFWDQHRUKLJKHU. Gasohol which contains a PD[LPXPHWKDQROJUDLQDOFRKRORU07%(PHWK\OWHUWLDU\EXW\OHWKHU
is also approved. The prescribed mixing ratio of gasoline to oil is listed on the ECHO oil label and covered in your operator’s manual.

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engine speeds as listed in your operator’s manual.

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of unauthorized attachments.

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manual. Preventative maintenance as outlined in the operators manual is the customer’s responsibility.

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warranty period.

&amp;HUWDLQparts and other items are not warranted, including but not limited to: lubricants, starter cords, and engine tune-ups.

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Manuals.

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screen.

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with recommended grease or oil change intervals.

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9$&amp;&reg; beyond recommended capacity.

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failure occur, the product should not be used, but delivered as is to an authorized ECHO servicing dealer.
It is a dealer’s and/or customer’s responsibility to complete and return the warranty registration card supplied with your ECHO product or by visiting
WWW.ECHO-USA.COM&lt;RXUUHFHLSWRISXUFKDVHLQFOXGLQJGDWHPRGHODQGVHULDOQXPEHUPXVWEHPDLQWDLQHGDQGSUHVHQWHGWRDQDXWKRUL]HG
ECHO servicing dealer for warranty service. Proof of purchase rests solely with the customer. Some states do not allow limitations on how long
an implied warranty lasts, so the above limitations may not apply to you. Some states do not allow the exclusion or limitation of incidental or
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Incorporated, 400 Oakwood Rd., Lake Zurich, IL 60047.
DISCLAIMER OF IMPLIED WARRANTIES
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OR USE and any implied warranty of MERCHANTABILITYRWKHUZLVHDSSOLFDEOHWRWKLVSURGXFW(&amp;+2DQGLWVDI&iquest;OLDWHGFRPSDQLHVVKDOOQRWEH
OLDEOHIRUDQ\VSHFLDOLQFLGHQWDORUFRQVHTXHQWLDOGDPDJHLQFOXGLQJORVWSUR&iquest;WV7KHUHDUHQRZDUUDQWLHVH[WHQGHGRWKHUWKDQDVSURYLGHGKHUHLQ
7KLVOLPLWHGZDUUDQW\PD\EHPRGL&iquest;HGRQO\E\(&amp;+2
99922201032
11/18/2011
X7722271408
&copy; 3/2014 ECHO Inc.
37
NOTES
SRM-225U
NOTES
38
X7722271408
&copy; 3/2014 ECHO Inc.
SRM-225U
X7722271408
&copy; 3/2014 ECHO Inc.
NOTES
39
ECHO, INCORPORATED
40
400 Oakwood Road
Lake Zurich, IL 60047
www.echo-usa.com
S79111001030/S79111999999
S79012004906/S79012999999
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