Echo srm-251e, srm-251 Operator's Manual
Grass T rimmer/Brush Cutter
Operator's Manual
MODEL SRM - 251
SRM - 251E
X7502021603
W ARNING DANGER
Read rules for safe operation and instructions carefully. ECHO provides an Operator's
Manual and a Safety Manual. Both must be read and understood for proper and safe
operation.
X750007283
03/06
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. You will find it easy to use and full of helpful operating tips and
SAFETY messages.
THE OPERATOR’S MANUAL
Read and understand this manual before operation. Keep it in a safe
place for future reference. It contains specifications and information for
operation, starting, stopping, maintenance, storage, and assembly
specific to this product.
THE SAFETY MANUAL
Read and understand this manual before operation. Keep it in a safe
place for future reference. It explains possible hazards involved with the
use of this product and what measures you should take to make their
use safer.
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 .............. 4
- Equipment Check ..................................................... 6
Emission Control............................................................. 8
Description ..................................................................... 7
Contents ......................................................................... 9
Assembly ...................................................................... 10
- Plastic Shield Installation....................................... 10
- Nylon Head Installation......................................... 10
- Front Handle Installation ....................................... 1 1
Operation ...................................................................... 12
- Fuel ........................................................................ 12
- Starting Cold Engine .............................................. 1 3
- Starting Warm Engine............................................ 14
- Stopping Engine .................................................... 14
Copyright© 2006 By Echo, Incorporated
All Rights Reserved.
Maintenance ................................................................. 15
- Skill Levels ............................................................. 15
- Maintenance Intervals ........................................... 15
- Air Filter ................................................................. 16
- Fuel Filter ............................................................... 16
- Spark Plug.............................................................. 17
- Cooling System...................................................... 1 7
- Exhaust System...................................................... 1 8
- Carburetor Adjustment .......................................... 1 9
- Lubrication............................................................. 21
- Nylon Line Replacement ........................................ 22
Troubleshooting ........................................................... 23
Storage.......................................................................... 24
Specifications................................................................ 25
Servicing Information.................................................... 28
- Parts/Serial Number ............................................... 28
- ECHO Consumer Product Support......................... 2 8
- Service ................................................................... 28
- Warranty Card ....................................................... 28
- Additional or Replacement Manuals ..................... 2 8
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.
SAFETY
GRASS TRIMMER/BRUSH CUTTER
OPERATOR'S MANUAL
3
MANUAL
SAFETY SYMBOLS AND IMPORT ANT 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.
This symbol accompanied by the words WARNING and
DANGER calls attention to an act or condition that can lead
to serious personal injury to operator and bystanders.
The circle with the slash symbol means whatever is shown
within the circle is prohibited.
IMPORTANT
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.
INTERNA TIONAL SYMBOLS
DESCRIPTION
"WARNING, SEE
OPERATOR'S
MANUAL
Wear eye, ear
and head
protection
Wear hand and
foot protection
Safety/Alert
SYMBOLSYMBOL
Keep bystanders and helpers
away 15 m (50 ft.).
DESCRIPTION
Hot
Surface
Finger Severing
DO NOT allow
flames or sparks
near fuel.
DO NOT smoke
near fuel.
SYMBOL DESCRIPTION
Emergency
Stop
Carburetor
Adjustment
- High speed
mixture
Carburetor
Adjustment
- Idle speed
Carburetor
Adjustment
- Low speed
mixture
Choke Control
"Run"
Position
(Choke Open)
SYMBOL
DESCRIPTION
Fuel and oil
mixture
Primer
Bulb
Ignition
ON/
OFF
Do not use
blades. String
line only
Choke Control
"Cold Start"
Position
(Choke Closed)
4
PERSONAL CONDITION AND SAFETY EQUIPMENT
W ARNING DANGER
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
Wear eye protection that meets ANSI Z87.1 or CE requirements 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 fitting, durable clothing;
• Pants should have long legs, shirts with long sleeves.
• DO NOT WEAR SHORTS,
• DO NOT WEAR TIES, SCARFS, JEWELRY.
Wear protective hair covering to contain long hair.
Wear sturdy work shoes with nonskid soles;
• DO NOT WEAR OPEN TOED SHOES,
• DO NOT OPERATE UNIT BAREFOOTED.
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.
Extended Operation/Extreme Conditions
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.
GRASS TRIMMER/BRUSH CUTTER
OPERATOR'S MANUAL
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.
5
W ARNING 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
fingers 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.
6
EQUIPMENT CHECK
W ARNING DANGER
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 fuel lines, tank, and area around carburetor for fuel leaks.
DO NOT operate unit if leaks are found.
• 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 front loop handle and shoulder strap/ or shoulder/
waist harness are adjusted for safe, comfortable operation. See
Assembly Section for proper adjustment.
EMISSION CONTROL
EPA Phase 2 SRM-251E
The emission control system for this engine is EM (Engine
Modification).
IMPORTANT ENGINE INFORMATION
ENGINE FAMILY: 6EHXS.0254ED DISPLACEMENT: 25.4 CC
EMISSION COMPLIANCE PERIOD : 300 HRS.
THIS ENGINE MEETS U.S. EPA PHASE 2 EMISSION REGULATIONS
FOR SMALL NONROAD ENGINES. REFER TO OWNER'S MANUAL
FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.
California Tier 2 SRM-251
The emission control system for these engines is EM/
TWC (Engine Modification and Catalyst).
ENGINE FAMILY: 6EHXS.0254KE DISPLACEMENT: 25.4 cc
EMISSION COMPLIANCE PERIOD: 300 Hours
THIS ENGINE MEETS U.S. EPA PH2 AND 2005 - 2006
CALIFORNIA EXH EMISSION REGULATIONS FOR SORE
REFER TO OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.
IMPORTANT ENGINE INFORMATION
S.
An Emission Control Label is located on the engine. (This is an EXAMPLE ONLY, information on label varies by engine
FAMILY).
PRODUCT EMISSION DURABILITY
The 300 hour emission durability 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.
GRASS TRIMMER/BRUSH CUTTER
OPERATOR'S MANUAL
DESCRIPTION
Locate these safety decals on your unit. Make sure the decals are legible and that you understand and follow the
instructions on them. If a decal cannot be read, a new one can be ordered from your ECHO dealer. See PARTS ORDERING instructions for specific information.
7
P/N 89016054130
6
16
18
17
15
14
P/N 89022809560
9
13
5
11
12
P/N X505001930
4
Hot Decal (near muffler)
P/N 89016006361
1
3
2
7
Shaft Decals
P/N 89022809560
P/N 89016054130
8
10
P/N X505001930
8
1. POWER HEAD - Includes the Engine, Clutch, Fuel System, Ignition System and Recoil Starter.
2. GRIP - Rear (right hand) handle.
3. THROTTLE TRIGGER LOCKOUT - This lever must be held during starting. Operation of the throttle trigger is
prevented unless throttle trigger lockout lever is engaged.
4. STOP SWITCH - "SLIDE SWITCH" mounted on top of the Throttle Trigger Housing. Move switch FORWARD to
RUN, BACK to STOP.
5. FRONT HANDLE - The Front (loop) handle is loosely assembled to the Drive Shaft assembly and must be positioned
for proper cutting attitude and operator comfort.
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 Assembly just
above the cutting attachment. Helps protect the operator by deflecting debris produced during the trimming operation.
9. DRIVE SHAFT ASSEMBLY - Includes the Rear (right hand) Handle assembly, Gear Housing assembly, Front (loop,
left hand) Handle assembly, steel drive shaft and Safety Decal.
10. THROTTLE TRIGGER - Spring loaded to return to idle when released. During acceleration, press trigger gradually for
best operating technique.
11. SPARK ARRESTOR - CATALYTIC MUFFLER / MUFFLER -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.
12. FUEL TANK - Contains fuel and fuel filter.
13. I-30 RECOIL STARTER/HANDLE - i30 spring-assisted recoil starter requires 30% less pulling force than standard
recoil starter. 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.
14. FUEL TANK CAP - Covers and seals fuel tank opening.
15. CHOKE - The choke control is located on the top of the air filter case. Move choke lever to "Cold Start" ( ) to
close choke for cold start. Move choke lever to "Run" ( ) position to open choke.
16. AIR CLEANER - Contains replaceable filter element.
17. 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.
18. SPARK PLUG - Provides spark to ignite fuel mixture.
GRASS TRIMMER/BRUSH CUTTER
OPERATOR'S MANUAL
CONTENTS
The ECHO product you purchased has been partially assembled for your convenience. Due to packaging restrictions,
installation of the plastic debris shield, nylon line head, and positioning of the front handle 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.
* Some units may be factory pre-assembled. No assembly tools are needed and the nylon line head, plastic debris shield,
and mounting hardware, shown in the contents list, are pre-assembled to the unit. Only the front handle may need to be
re-positioned for comfortable operation.
______1 - Power Head / Drive Shaft Assembly
______1 - Operator's Manual
______1 - Safety Manual
______1 - Warranty Registration Card
______1 - Limited Warranty Statement
______1 - Safety Glasses
______1 - Echo Power Blend TM 2-stroke oil sample
* ___ 1 - Nylon Trimmer Head
* ___ 1 - T-wrench 17x19, P/N 89541008030
* ___ 1 - Locking tool, P/N 89751801131
* ___ 1 - Plastic shield
* ___ 1 - Shield plate
* ___ 3 - 5mm x 16mm screws (shield mtg.)
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