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Operator’s Manual
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.
x7722271404 / x772000164
SRM-2620U
GRASS TRIMMER / BRUSH
CUTTER
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.
Note: This product complies with CAN ICES-2/NMB-2.
TABLE OF CONTENTS SRM-2620U
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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................................................................................................. 5
Echo Consumer Product Support........................................................ 5
Product Registration ............................................................................ 5
Additional or Replacement Manuals .................................................... 5
Safety.......................................................................................................... 5
Manual Safety Symbols and Important Information............................. 5
International Symbols .......................................................................... 6
Personal Condition and Safety Equipment .......................................... 8
Equipment.......................................................................................... 12
Emission Control (Exhaust & Evaporative) .............................................. 13
CARB And EPA Emissions Control Information................................. 13
Description ................................................................................................ 15
Contents.................................................................................................... 18
Assembly................................................................................................... 19
U-Handle Installation.......................................................................... 19
Throttle Linkage and Ignition Leads................................................... 19
Blade Installation ............................................................................... 20
Shield Installation............................................................................... 22
Nylon Line Head Installation .............................................................. 23
To Advance Trimmer Line .................................................................. 24
Balance and Adjust Unit .................................................................... 24
Operation .................................................................................................. 24
Operation With Blades....................................................................... 25
Blade Selection.................................................................................. 26
Fuel.................................................................................................... 28
Starting Cold Engine.......................................................................... 30
Starting Warm Engine........................................................................ 31
Stopping Engine ................................................................................ 32
SRM-2620U TABLE OF CONTENTS
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Maintenance ............................................................................................. 33
Skill Levels......................................................................................... 33
Maintenance Intervals ....................................................................... 33
Air Filter ............................................................................................. 34
Fuel Filter .......................................................................................... 36
Spark Plug......................................................................................... 37
Cooling System ................................................................................. 37
Exhaust System ................................................................................ 38
Carburetor Adjustment ...................................................................... 40
Lubrication......................................................................................... 41
Nylon Line Head Disassembly Instructions ....................................... 42
Nylon Line Replacement ................................................................... 42
Sharpening Metal Blades .................................................................. 44
Troubleshooting ........................................................................................ 45
Storage..................................................................................................... 46
Long Term Storage (Over 30 Days)................................................... 46
Specifications ........................................................................................... 48
Product Registration ................................................................................. 50
INTRODUCTION SRM-2620U
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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. Scan QR codes throughout the operator’s manual
for more information.
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,
assemblies and maintenance
kits for your ECHO products
are available 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. _________________ Serial No. _________________
SRM-2620U SAFETY
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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 8:00 am to 5:00 pm
(Central Standard Time) Monday through Friday. Before calling, please
know the model and serial number of your unit.
Product 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
product registration sheet included in this manual. Registering your product
confirms your warranty coverage and provides a direct link between you and
ECHO if we find it necessary to contact you.
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.
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.
SAFETY SRM-2620U
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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.
International Symbols
Symbol Description Symbol Description
Warning, See
Operator’s Manual
Carburetor
Adjustment - High
Speed Mixture
Wear Eye, Ear
and Head
Protection
Carburetor
Adjustment - Idle
Speed
Wear Hand and
Foot Protection
Carburetor
Adjustment - Low
Speed Mixture
Safety/Alert Emergency Stop
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Hot Surface Fuel and Oil Mixture
AVOID KICKOUT
Keep Bystanders At Least
15 meters (50 feet) Away.
B e w are T h r o w n O b j e ct s
Wear Eye Protection
DO NOT Allow
Flames or Sparks
Near Fuel
Ignition
ON / OFF
DO NOT Smoke
Near Fuel
Primer Bulb
Choke Control
“RUN” Position
(Choke Open)
Choke Control
“COLD START”
Position (Choke
Closed)
Keep Feet Away
From Blade
Rotating Cutting
Attachment
Keep Bystanders and
Helpers Away 15 m (50 ft.)
Thrown Objects Direction of Blade
Symbol Description Symbol Description
SAFETY SRM-2620U
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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 or CE requirements
must be worn whenever you operate the unit.
◆ For additional safety, a full-face shield may be worn over
safety glasses or goggles to provide protection from sharp
branches or flying debris.
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Hand Protection
Wear sturdy, no-slip, rubber work gloves to improve your grip on the
handles. Gloves also provide protection against cuts and scratches, cold
environments, and reduce the transmission of machine vibration to your
hands.
Hearing/Ear Protection
ECHO recommends wearing hearing protection whenever unit is used.
Breathing Protection
Operators who are sensitive to dust or other common airborne allergens
may need to wear a dust mask to prevent inhaling these materials while
operating unit. Dust masks can provide protection against dust, plant debris,
and other plant matter such as pollen. Make sure the mask does not impair
your vision, and replace the mask as needed to prevent air restrictions.
Proper Clothing
Wear snug-fitting, durable clothing:
• Pants should have long legs, shirts should have 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.
• Keep clothing buttoned or zipped, and keep shirt tails tucked in.
Wear sturdy work shoes with nonskid rubber soles:
• DO NOT WEAR OPEN TOED SHOES.
• DO NOT OPERATE UNIT BAREFOOTED.
Keep long hair away from engine and air intake. Retain hair with cap or net.
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.
SAFETY SRM-2620U
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The 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 this machine by anyone who has a
pacemaker.
Extended Operation / Extreme Conditions
Prolonged exposure to cold and/or vibration may result in
injury. Read and follow all safety and operation instructions to
minimize risk of injury. Failure to follow instructions may result
in painful wrist/hand/arm injuries.
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.
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Repetitive Stress Injuries (RSI)
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 exercises 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.
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.
SAFETY SRM-2620U
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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.
Equipment
Use only ECHO 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.
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• Check that handle and harness (if included) are adjusted for safe,
comfortable operation. See Assembly Section for proper adjustment.
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.
Periodically Check fuel system (fuel lines, vent, grommet,
fuel tank, and fuel cap) for leaks 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 &
EVAPORATIVE)
CARB And EPA Emissions Control Information
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 “B”, “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.
EMISSION CONTROL SRM-2620U
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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.
SRM-2620U DESCRIPTION
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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.
13
14
17
20
21
1
2
5
6
8
9
4
3
7
18
19
10
11
12
22
23
15
16
DESCRIPTION SRM-2620U
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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
Handle. 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: 13 cm
(5 in) 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. DEBRIS SHIELD with CUT-OFF KNIFE - Required when unit is
equipped with nylon line head. Do not operate unit without shield.
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. DEBRIS SHIELD without CUT-OFF KNIFE - Required when unit is
equipped with blades. Do not operate unit without shield.
13. SPARK PLUG - Provides spark to ignite fuel mixture.
Shaft Label
Hot Label
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14. ARM REST - Provides arm rest during operation and protects arm from
the hot engine.
15. 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.
16. 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.
17. FUEL TANK - Contains fuel and fuel filter.
18. FUEL TANK CAP - Covers and seals fuel tank opening.
19. 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.
20. AIR CLEANER - Contains replaceable filter element.
21. 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.
22. THROTTLE HANDLE - FOR RIGHT HAND - Contains Stop
Switch, Throttle Lockout, and Throttle Trigger.
23. SUPPORT HANDLE - FOR LEFT HAND.
CONTENTS SRM-2620U
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CONTENTS
The ECHO product you purchased has been factory pre-assembled for your
convenience. Due to packaging restrictions, some 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 - Warranty Statement
_____ 1 - Safety Manual
_____ 1 - Shield Without Cut Off Knife
_____ 1 - Safety Glasses
_____ 1 - U-handle mounting clamp (lower)
_____ 1 - U-handle mounting clamp (upper)
_____ 1 - U-handle bolt
_____ 1 - Flat Washer
_____ 2 - Cable Clips
_____ 3 - Lock Nuts (shield mount)
_____ 1 - Lower Blade Fixing Plate
_____ 1 - Large Nut (blade mounting)
_____ 1 - Shoulder Harness w/Hip Pad
_____ 11- Cotter Pins
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ASSEMBLY
U-Handle Installation
1. Install upper and lower u-handle
clamps (A) onto u-handle, and
secure to mounting bracket on drive
shaft (B) with washer (C) and u-
handle bolt (D). Do not tighten bolt
securely until final adjustments are
completed.
2. Position u-handle as shown and
tighten u-handle bolt.
3. Route throttle linkage and ignition
lead assembly along shaft and clip as
shown.
Throttle Linkage and
Ignition Leads
1. Close choke and remove air
filter cover.
2. Place throttle wire assembly (A)
into adjustment fixture (B) and
install wire end into large
carburetor throttle swivel hole
(C).
3. Turn throttle wire retaining clip
(X) clockwise to lock into place.
Assure throttle wire retaining clip
remains in place as shown when
removing or installing air filter cover.
4. Check throttle for freedom of movement and that wide open throttle /
low idle extremes are adjusted properly.
Parts Required: U-Handle, lower u-handle clamp, upper u-handle
clamp, u-handle bolt, flat washer
A
B
C
D
A
B
C
X
D
E
X
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Note: The throttle linkage must be adjusted by moving the adjustment nut
(D). Consult with your Echo Dealer for correct adjustment
procedure.
5. Tighten nut (E).
6. Connect 2 ignition stop leads (F, G)
from throttle cable assembly to 2
ignition leads (F, G) on engine.
7. Install air filter and cover.
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.
Shield with cutoff knife is for use with the Nylon Line Head only.
Install shield without cutoff knife when using plastic or metal
blades, or 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 blade Shield
Parts Required: Shield without cutoff knife, Shield Plate, 3
bolts, 3 lock nuts
F, G
F, G
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1. If installed remove nylon line
head, line head plate, shield
plate, and shield with cutoff
knife .
a. Align notch in edge of
shield and hole in line
head 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) and line head plate.
d. Remove three screws holding shield plate and shield with cutoff
knife (H) to gear housing.
e. Retain line head, shield plate, and shield with cutoff knife for
conversion back to nylon line head operation.
2. Align holes in shield plate (I)
shield, (K) and bottom of gear
case flange. Install (3) bolts (L)
and (3) lock nuts (M).
3. Tighten all shield hardware.
Install Blade
Parts Required: Upper Plate with pilot, Lower Plate, 10 mm Nut with
Left Hand threads, 2 x 25 mm Cotter Pin, Blade.
G
J
H
I
K
L
M
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1. Install upper plate with pilot (A) on
splined PTO shaft, pilot side out. .
2. Install Blade (M) on upper plate pilot.
Blades must be installed so that rotation
arrow on blade matches rotation of unit
(See debris shield). Secure blade with
Lower Plate (E), and 10 mm Left Hand
threads nut (D). Turn nut
counterclockwise 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.
Tighten 10 mm nut securely.
4. Insert Cotter Pin (C) in hole in PTO
shaft, and bend pin legs around
shaft counterclockwise to retain 10
mm nut.
Never reuse a cotter pin - install a
new cotter pin each time a blade is
installed or replaced.
5. Remove locking tool (G).
Shield Installation
(Nylon line operation)
Shield with cutoff knife is for use with the Nylon Line Head only.
Install shield without cutoff knife when using plastic or metal
blades, or serious injury may result.
1. Remove blade, blade mounting hardware, and shield without cutoff
knife and retain for future use with blade conversions.
Parts Required: Shield with cutoff knife, Shield Plate,
three screws, line head plate.
A
M
E
D
C
A
G
M
E
D
C
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2. Align holes in shield (H) shield plate
(I) and bottom of the gear case
flange. Install three (3) screws.
3. Place line head plate (A) on PTO
shaft (F).
Nylon Line Head
Installation
Wear Gloves or personal injury
may result:
◆ Cutoff knife is sharp.
◆ Gearcase and surrounding
area may be hot.
1. Make sure shield with cutoff knife (H) and shield plate are properly
installed, and line head plate (A) is installed on splined PTO shaft (F).
2. Align notch in edge of shield and hole in line head plate with notch in
edge of gear housing and insert head locking tool (G)
3. Thread line head (J) onto
PTO shaft by turning it
counterclockwise until head
is tight against line head
plate (A).
4. Remove locking tool (G).
Semi-automatic nylon line
heads must be used only with
debris shield with cut-off knife.
Using nylon line heads with
debris shield without cutoff knife can result in trimmer damage,
caused by operation with excessive line length.
Parts Required: Nylon Line Head.
H
A
I
G
F
A
G
J
OPERATION SRM-2620U
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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.
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 hex bolt securely.
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.
B
A
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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 around dry vegetation. 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.
PARTS REQUIRED FOR THESE BLADES:
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
Shield w/cutoff knife Shield w/cutoff knife Shield w/o cutoff
knife
Harness Harness Harness
Upper Plate &
Flat Washer
Upper Plate
& Glide Cup
Upper/Lower
Blade Plates
Hex Nut Hex Nut Hex Nut
New Cotter Pin New Cotter Pin New Cotter Pin
OPERATION SRM-2620U
26 X7502341900
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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 7.5 kg (16.5 lbs.) dry weight (weight w/o fuel) require a
double shoulder harness.
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 in.) diameter. DO
NOT use this blade for brush
or heavy woody growth.
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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.
Note: In case of Emergency, pull
up on the Quick Release
Collar to disconnect the
trimmer from the harness.
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Fuel
Diesel fuels and 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 diesel or 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. Diesel or 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
®
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. M345-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.
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ENGLISH
◆ 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.
◆ Inspect for fuel leakage. If fuel leakage is found, do not
start or operate unit until leakage is repaired.
◆ Move at least 3 m (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.
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.
Fuel to Oil Mix – 50:1 Ratio
US Metric
Gas Oil Gas Oil
Gallons Oz. Liter CC.
12.65100
2 5.2 10 200
51325500
OPERATION SRM-2620U
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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.
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.
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.
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
A
B
C
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ENGLISH
Lay the unit on a flat area and keep movable attachment parts clear of all
obstacles. Firmly grasp throttle handle 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. Firmly grasp
throttle handle and throttle
trigger lockout with left
hand and fully depress
throttle trigger to wide
open position. Pull recoil
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, grip throttle handle and support handle. Depress
the throttle trigger lockout, and gradually depress throttle trigger to
increase engine RPM to operating speed.
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.
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
D
A
OPERATION SRM-2620U
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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.
3. Recoil Starter
Lay the unit on a flat area
and keep movable
attachment parts clear of
all obstacles. Firmly grip
throttle handle and throttle
trigger lockout with left
hand. Rapidly pull recoil
starter handle/rope (D)
until engine fires.
Note: If engine does not
start after 5 pulls,
use Cold Start Procedure.
Stopping Engine
1. Throttle
Release throttle trigger and allow
engine to return to idle before
shutting off engine.
2. Stop Switch
Move stop switch button (A)
backward to STOP position.
B
C
D
A
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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.
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, we recommend
that you take your unit to an ECHO Servicing 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.
Click HERE or go to http://www.echo-usa.com/products/maintenance-kit for
information on Maintenance Kits.
Maintenance Intervals
COMPONENT/SYSTEM
MAINTENANCE
PROCEDURE
REQ’D
SKILL
LEVEL
Daily or Before Use
Air Filter
Inspect/Clean * 1
Choke Shutter
Inspect/Clean * 1
Fuel System
Inspect (3) 1
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IMPORTANT NOTE - Time intervals shown are maximum. Actual use and
your experience will determine the frequency of required maintenance.
MAINTENANCE PROCEDURE NOTES:
(1) Apply lithium based grease every 25 hours of use.
(2) Apply lithium based grease every 50 hours of use.
(3) Low evaporative fuel tanks DO NOT require regular maintenance to
maintain emission integrity.
* Replacement is recommended based on the finding of damage or wear
during inspection
Air Filter
Level 1
Cooling System
Inspect/Clean 2
Recoil Starter Rope
Inspect/Clean * 1
Screws/Nuts/Bolts
Inspect/Tighten/Replace * 1
Every Refuel
Fuel System
Inspect (3) 1
3 Months
Air Filter
Replace * 1
Fuel Filter
Inspect * 1
Fuel Cap Gasket
Inspect * 1
Spark Plug
Inspect/Clean/Replace * 1
Muffler Spark Arrestor
Inspect/Clean/Replace * 2
Cylinder Exhaust Port
Inspect/Clean/Decarbon 2
Drive Shaft (Flex Cable Models)
Grease (1) 2
Gear Housing Grease (2) 2
Yearly
Fuel Filter
Inspect/Replace * 1
Fuel Cap Gasket
Replace * 1
Parts Required: Tune Up Kit.
COMPONENT/SYSTEM
MAINTENANCE
PROCEDURE
REQ’D
SKILL
LEVEL
SRM-2620U MAINTENANCE
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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.
Assure throttle wire retaining clip
remains in place as shown when
removing or installing air filter cover.
3. Remove foam pre-filter and
air filter and clean as
indicated below:
Foam Pre-filter
• Clean foam filter in water/
detergent solution and
rinse with clean water.
• Wrap the filter in a clean,
dry cloth and squeeze (do
not wring) dry. Allow to
dry completely before
reuse. Do not oil.
Air Filter
• Lightly brush debris from filter. Replace filter if it is damaged, fuel
soaked, very dirty, or the rubber sealing edges are deformed.
4. Assemble components in reverse order.
X
MAINTENANCE SRM-2620U
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Assure air filter is assembled
with pleats oriented
vertically.
Fuel Filter
Level 1.
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. Pull the fuel filter from the
fuel tank.
Do not damage fuel line
while removing fuel filter
from tank.
3. Remove the filter from the
line and install the new filter.
Parts Required: Tune Up Kit.
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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.
Spark Plug
Level 2.
Use only NGK CMR7H spark plug otherwise severe engine damage
may occur.
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 102-153 kgf•cm (89-133 in•lbf).
Cooling System
Level 2.
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.
Parts Required: Tune Up Kit.
Parts Required: None if you are careful.
0.6 mm (0.026 in.)
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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.
2. Remove muffler cover (A).
3. Remove engine cover (B).
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 grass and leaves from
the grid between the recoil
starter and fuel tank.
6. Assemble components in reverse
order.
Exhaust System
Spark Arrestor Screen
Level 2.
Parts Required: Spark Arrestor Screen, Gasket
A
B
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1. Remove spark plug lead.
2. Remove muffler cover (B).
3. Place piston at Top Dead Center (TDC) to prevent carbon/dirt from
entering cylinder.
4. Remove spark arrestor
screen cover (C), gasket (E),
and screen (F), from muffler
body.
5. Clean carbon deposits from
muffler components.
Note: When cleaning carbon
deposit, be careful not
to damage the catalytic
element inside muffler.
6. Replace screen if it is
cracked, plugged, or has
holes burned through.
7. Assemble components in
reverse order.
Exhaust Port Cleaning
Level 2.
1. Remove spark plug lead
from spark plug, and
remove muffler 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.
Parts Required: As needed: Heat Shield
F
C
E
B
A
MAINTENANCE SRM-2620U
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4. Inspect heat shield, and
replace if damaged.
5. Install heat shield and
muffler.
6. Tighten muffler mounting
bolts (or nuts) to 90-110
kgf•cm (80-95 in•lbf).
7. Install muffler 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.
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.
Parts Required: None
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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; counterclockwise to
decrease idle speed.
When carburetor adjustment is completed, the cutting
attachment should not move at idle, otherwise serious personal
injury may result.
Lubrication
Level 1.
Gear Housing
1. Clean all loose debris from
gear case.
2. Remove plug (A) and check
level of grease.
3. Add grease if necessary. DO
NOT over-fill.
Drive Shaft
1. Loosen screw (B) and
remove 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.
Parts Required: Lithium Based Grease.
A
A
B
C
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Nylon Line Head Disassembly Instructions
Note: For normal use, Speed Feed® head disassembly is not
necessary. However, if circumstances require disassembly,
follow these instructions.
1. Press top of locking tabs (A) on
both sides of Speed Feed® head
to release cover (B) from eyelet
carrier (C).
2. Remove cover from eyelet
carrier.
Nylon Line Replacement
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.
2.0 mm (.080) diam. – 6 m (20 ft.)
2.4 mm (.095) diam. – 6 m (20 ft.)
2. Align arrows on top of knob with
openings in eyelets.
A
B
C
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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 13 cm (5 in.) of
each line remains exposed.
Trimmer head is now fully loaded
and ready for operation.
When the wear indicators located at the bottom of the Speed-Feed®
head are worn smooth, or if holes appear, replacement of the cover
or the entire Speed-Feed® head is required.
Wear Indicators
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Sharpening Metal Blades
Several styles of metal blades are
approved for use on the 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,
e.g., 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.
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
ENGINE PROBLEM TROUBLESHOOTING CHART
Problem Check Status Cause Remedy
Engine
cranks -
starts
hard/
doesn’t
start
Fuel at
carburetor
No fuel at
carburetor
Fuel strainer
clogged - Fuel
line clogged -
Carburetor
Clean or replace
- See your Echo
dealer
Fuel at
cylinder
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
Spark at
end of plug
wire
No spark Stop switch
OFF - Electrical
problem -
Interlock switch
Turn switch to ON
- See your Echo
dealer
Spark at
plug
No spark Spark gap
incorrect -
Covered with
carbon - Fouled
with fuel - Plug
defective
Adjust to 0.65mm
(0.026 in.) - Clean
or replace plug
Engine
runs, but
dies or
does not
accelerat
e properly
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
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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.
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.
Engine
does not
crank
N/A N/A Internal engine
problem
See your Echo
dealer
ENGINE PROBLEM TROUBLESHOOTING CHART
Problem Check Status Cause Remedy
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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. Allow engine to cool then remove the spark plug and pour 7 cc (¼ oz.)
of fresh, clean, two-stroke engine oil into the cylinder through the spark
plug hole.
8. Pull the recoil starter handle 2-3 times to distribute the oil inside the
engine.
9. 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.
10. Install the spark plug (do not connect ignition cable).
SPECIFICATIONS SRM-2620U
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SPECIFICATIONS
MODEL SRM-2620U
Length w/o cutter head 1799 mm (70.8 in.)
Width 688 mm (27.0 in.)
Height 512 mm (20.1 in.)
Weight (dry) w/o cutter head 5.6 kg (12.3 lb.)
Engine Type
Air cooled, two-stroke, single cylinder gasoline
engine
Bore 34 mm (1.34 in.)
Stroke 28 mm (1.10 in.)
Displacement 25.4cc (1.55 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 NGKCMR7H Gap 0.6 mm (0.026 in.)
Fuel Mixed (Gasoline and Two-stroke Oil)
Fuel/Oil Ratio
50 : 1 Power Blend X
TM
or ECHO Red Armor
®
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 E15 or
E85.
Oil
Power Blend X
TM
or ECHO Red Armor
®
Premium
Universal 2-Stroke Oil
Fuel Tank Capacity 0.61 L (20.6 US fl. oz.)
Starter System Automatic Rewind Starter
Clutch Centrifugal Type
Vibration Isolated System
Rubber cushion on engine mount (heavy duty).
Rubber grip on support handle.
Operating Rod 25.0 mm aluminum Tube
Drive Shaft 6.15 mm flexible shaft (.24 in)
Gear Case Ratio 1.62 Reduction
Rotating Direction Counterclockwise; viewed from top
Cutter Head
Speed Feed
®
400 LH Nylon line head, Line capacity
6.0 m (20 ft.)
SRM-2620U SPECIFICATIONS
X7502341900 49
© 10/2016 ECHO Inc.
ENGLISH
Handle U-Handle
Shoulder Harness included
Idle Speed 3,000 RPM
Clutch Engagement Speed 4,100 RPM
Wide Open Throttle Speed
(W.O.T.)
11,300 RPM
MODEL SRM-2620U
PRODUCT REGISTRATION SRM-2620U
50 X7502341900
© 10/2016 ECHO Inc.
PRODUCT REGISTRATION
Thank you for choosing ECHO Power Equipment
Please go to http://www.echo-usa.com/Warranty/Register-Your-ECHO to
register your new product on-line. It's FAST and EASY! NOTE: your
information will never be sold or misused by ECHO, Inc. Registering your
purchase enables us to contact you in the unlikely event of a service update
or product recall, and verifies your ownership for warranty consideration.
If you do not have access to the Internet, you can complete the form below
and mail to:
ECHO Inc., Product Registration, PO Box 1139, Lake Zurich IL 60047.
SRM-2620U PRODUCT REGISTRATION
X7502341900 51
© 10/2016 ECHO Inc.
ENGLISH
ECHO, INCORPORATED
400 Oakwood Road
Lake Zurich, IL 60047
www.echo-usa.com
T94415001001 - T94415999999
