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ENGLISH
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.
PB-2520
Power Blower
Burn Hazard
The muffler or catalytic muffler and surrounding cover
may become extremely hot. Always keep clear of ex-
haust and muffler area, otherwise serious personal in-
jury 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. It must be read and understood for
proper and safe operation. Failure to do so could result in
serious injury.
TABLE OF CONTENTS PB-2520
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TABLE OF CONTENTS
The Operator’s Manual ........................................................................ 3
Servicing Information.................................................................................. 3
Parts/Serial Number ............................................................................ 3
Service................................................................................................. 3
Echo Consumer Product Support........................................................ 4
Product Registration ............................................................................ 4
Additional or Replacement Manuals.................................................... 4
Safety.......................................................................................................... 4
Manual Safety Symbols and Important Information............................. 4
International Symbols.......................................................................... 5
Personal Condition and Safety Equipment .......................................... 7
Equipment.......................................................................................... 11
Emission Control (Exhaust & Evaporative) .............................................. 12
CARB And EPA Emissions Control Information................................. 12
DescriptioN ............................................................................................... 14
Contents.................................................................................................... 15
Assembly................................................................................................... 15
Install Blower Pipes............................................................................ 15
Remove Blower Pipes........................................................................ 17
Operation.................................................................................................. 17
Fuel.................................................................................................... 18
Starting Cold Engine.......................................................................... 20
Starting Warm Engine........................................................................ 21
Stopping Engine ................................................................................ 23
Operating Blower ............................................................................... 23
Maintenance ............................................................................................. 25
Skill Levels......................................................................................... 25
Maintenance Intervals........................................................................ 25
Throttle Connecting Rod.................................................................... 26
Air Filter ............................................................................................. 27
Fuel Filter........................................................................................... 27
Spark Plug ......................................................................................... 28
Cooling System.................................................................................. 29
Exhaust System................................................................................. 30
Carburetor Adjustment....................................................................... 30
Troubleshooting......................................................................................... 31
Storage...................................................................................................... 33
Long Term Storage (Over 30 Days)................................................... 33
Specifications............................................................................................ 34
Product Registration.................................................................................. 36
Notes......................................................................................................... 38
PB-2520 INTRODUCTION
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INTRODUCTION
Welcome to the ECHO family. This ECHO product was designed and manu-
factured to provide long life and on-the-job dependability. Read and under-
stand this manual. You will find it 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 spe-
cific to this product. Scan QR codes throughout the operator’s manual for
more information.
SERVICING INFORMATION
Parts/Serial Number
Genuine ECHO 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. For
future reference write them in the
space provided below.
Model No. _________________
Serial No. _________________
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. www.echo-usa.com
. When presenting your unit for Warranty service/
repairs, proof of purchase is required.
SAFETY PB-2520
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Echo Consumer Product Support
If you require assistance or have questions concerning the application,
operation, or maintenance of this product, 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
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 warranty coverage and provides a direct link to ECHO if
we find it necessary to contact you.
Additional or Replacement Manuals
Replacement Operator or Safety Manuals, and Parts
Catalogs, are available from your Authorized ECHO
Service Dealer, or at www.echo-usa.com, or by contacting
ECHO Inc., 400 Oakwood Road, Lake Zurich, IL 60047
(800-673-1558). Always check www.echo-usa.com for
updated information.
Safety Videos are available from your Authorized ECHO Service Dealer. A
$5.00 shipping charge is 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.
PB-2520 SAFETY
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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
Read and
Understand the
Operator’s Manual
Carburetor
Adjustment - High
Speed Mixture
Wear Eye, Ear
and Head
Protection
Carburetor
Adjustment - Idle
Speed
Wear Hand
Protection
Carburetor
Adjustment - Low
Speed Mixture
Safety/Alert Emergency Stop
H
T
L
SAFETY PB-2520
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Hot Surface Fuel and Oil Mixture
Idle speed Fast speed
Finger severing Primer Bulb
DO NOT Allow
Flames or Sparks
Near Fuel
Ignition
ON / OFF
DO NOT Smoke
Near Fuel
Choke Control
“COLD START”
Position (Choke
Closed)
Choke Control
“RUN” Position
(Choke Open)
Wear Slip Resistant
Footwear
Keep Bystanders and Helpers
Away 15 m (50 ft.).
Symbol Description Symbol Description
PB-2520 SAFETY
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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.
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.
SAFETY PB-2520
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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.
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.
PB-2520 SAFETY
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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.
SAFETY PB-2520
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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.
PB-2520 SAFETY
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Read the Manual
• Provide all users of this equipment with the Operator’s Manual for instruc-
tions on Safe Operation.
Clear the Work Area
• Clear the area of children, bystanders, and pets. At a minimum, keep all
children, bystanders, and pets outside a 15 m (50 ft.) radius; outside the
15 m (50 ft.) zone, there is still a risk of injury from thrown objects.
Bystanders should be encouraged to wear eye protection. If you are
approached, stop the engine.
• Avoid blowing debris towards people, pets, open windows, or vehicles
when using unit.
• Review area to be cleared. Look for potential hazards such as stones or
metal objects.
Keep a Firm Grip
• To prevent from dropping the unit, hold the handle in one hand, with
thumb and fingers encircling the handle.
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 opera-
tion.
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, attach-
ments or accessories which have not been tested and approved
by ECHO. Read and comply with all safety instructions listed in
this manual.
EMISSION CONTROL PB-2520
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• Check unit for loose/missing nuts, bolts, and screws. Tighten and/or
replace as needed.
• Do not use blower if any part is missing or damaged.
• Have repairs done only by an authorized ECHO Service dealer.
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 re-
paired by an authorized servicing dealer before using.
EMISSION CONTROL . (EXHAUST & EVAPO-
RATIVE)
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.
PB-2520 EMISSION CONTROL
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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.
DESCRIPTION PB-2520
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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. Safety label is for
example only. Your label my appear slightly different.
1. THROTTLE POSITION LEVER
2. STOP SWITCH
3. THROTTLE TRIGGER
4. SPARK PLUG
2 14
9
5
8
10
11
3
6
7
12
70dB(A)
per ANSI B175.2
5
6
7
8
PB-2520 CONTENTS
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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 neces-
sary.
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.
ASSEMBLY
Never perform maintenance or assembly procedures with
engine running or serious personal injury may result.
Install Blower Pipes
1. Stand unit upright on blower base.
5. AIR CLEANER
6. CHOKE
7. PURGE BULB
8. RECOIL STARTER HANDLE
9. FUEL TANK CAP
10. FUEL TANK
11. SPARK ARRESTOR MUFFLER OR SPARK ARRESTOR MUFFLER
WITH CATALYST
12. BLOWER PIPES
____1 Power Head
____2 Blower Pipe
____1 Warranty Statement
____1 Operator’s Manual
____1 Echo Power Blend X™ 2-Stroke Oil Sample
ASSEMBLY PB-2520
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2. Align large locking ribs (A) on
curved blower pipe with pipe
lock (B) in fan case. Slide
curved blower pipe into fan
case until a clicking sound is
heard.
Do not assemble the opposite
end of the curved blower pipe to
the fan case.
3. Align tabs (C) with grooves (D)
and slide straight blower pipe
(E) over curved pipe (F) until
there is light resistance. Do not
force the connection.
4. Hold curved pipe, and turn
straight pipe clockwise,
engaging positive locking
channels until connection is
firm.
Note: Blower use will eventually
loosen pipe connections.
Exclusive positive locking system allows pipes to be
tightened. If loosening occurs, remove straight pipe, and
reinstall according to instructions 3 and 4.
A
B
C
D
E
F
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Remove Blower Pipes
1. Insert screwdriver into hole (G)
to release pipe lock.
2. Pull pipe out of fan case.
3. Remove screwdriver.
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. Blower housing
may contain shredder blades and other sharp edges that can
cause serious injuries if touched, even if engine is off and
blades are not moving. Wear gloves to protect hands from sharp
edges and hot surfaces.
G
OPERATION PB-2520
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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.
Contact local fire authorities for laws or regulations regarding
fire prevention requirements.
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 Red Armor Fuel
™
(Power Fuel
™
) is
93 octane, ethanol-free fuel premixed with ECHO Red Armor
®
engine oil at
50:1 ratio. Use of ECHO Red Armor Fuel
™
(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 2-stroke oils
meet 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 brand 2-stroke oils, will void the two-
stroke engine warranty.
Echo brand 2-stroke oils may be mixed at 50:1 ratio for application in
all Echo engines sold in the past regardless of ratio specified in those
manuals.
PB-2520 OPERATION
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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.
◆ 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.
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 PB-2520
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• Empty the fuel tank prior to storing the unit. 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.
Used oil and gasoline, and soiled towels are hazardous waste
materials. Disposal laws vary by locality.
Starting Cold Engine
1. Stop Switch
Move stop switch (A) away from
the STOP position.
Note: Engine will not run if safety
switch is not activated.
2. Throttle Position Lever
Move throttle position lever (B)
midway between idle and full
throttle positions.
A
B
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3. Choke
Move choke (C) to COLD START
( ) (closed) position.
4. Purge Bulb
Pump purge bulb (D) until fuel is
visible and flows freely in the
clear fuel tank return line.
Recoil starter: Use short pulls - only 1/2 to 2/3 of rope for starting. Do
not allow the rope to snap back in. Always hold the unit firmly.
5. Recoil Starter
Place the unit on a flat, clear
area. Firmly grasp throttle
handle (E) with left hand and
rapidly pull recoil starter handle
(F) until engine fires, or
maximum 5 pulls.
6. Choke
Move choke lever (C) to RUN
position ( ), and if necessary,
restart engine.
Note: If engine does not start with choke in RUN position after 5
pulls, repeat instructions 3 - 6.
7. Throttle Trigger
After engine warm up, gradually depress throttle trigger to increase
engine RPM to operating speed.
Note: Allow engine to warm up 3 minutes before use.
Starting Warm Engine
The starting procedure is the same as Cold Start except DO NOT close the
choke.
C
D
F
E
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1. Stop Switch
Move stop switch (A) away from
the STOP position.
2. Throttle Position Lever
Move throttle position lever (B)
midway between idle and full
throttle positions.
3. Purge Bulb
Pump purge bulb (C) until fuel is
visible and flows freely in the
clear fuel tank return line.
4. Recoil Starter
Place the unit on a flat, clear
area. Firmly grasp throttle
handle (D) with left hand and
rapidly pull recoil starter handle/
rope (E) until engine fires.
Recoil starter: Use short pulls - only 1/2 to 2/3 of rope for starting. Do
not allow the rope to snap back in. Always hold the unit firmly.
Note: If engine does not start after 5 pulls, use Cold Start
Procedure.
A
B
C
E
D
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Stopping Engine
1. Throttle Trigger/Throttle
Position Lever
Release throttle trigger (A).
Move throttle position lever (B)
forward to idle position and allow
engine to return to idle before
shutting off engine.
2. Stop Switch
Move stop switch (C) 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.
Operating Blower
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.
Always wear safety glasses, hearing protection and a face filter
mask or serious personal injury may result. Do not point the
blower pipe in the direction of people or pets.
A
B
C
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Use reduced speed only when
performing light-duty tasks or to
comply with local noise
regulations. Continuous low
speed operation may allow fuel/oil
residue to build-up on the piston
and cause rapid build-up of
carbon on the spark arrestor
screen, resulting in overheating
and engine damage. To reduce
harmful build-up, run engine at
wide open throttle for at least 5 minutes every hour, and inspect/clean
the spark arrestor screen after approximately 40 hours of operation.
Read the Safety Section carefully.
To avoid engine damage due to over-revving, do not block blower
pipe.
1. Use only during appropriate hours.
2. Allow the engine to warm up at a fast idle for a few
minutes.
3. Control engine speed with throttle trigger (A), or for
continuous use, set engine speed with throttle
position lever (B). Rotate throttle position lever
forward for lower speed, back for higher speed.
4. Use lower speed to blow debris
from hard surfaces.
5. Additional speed may be
necessary to clean debris,
snow, etc. from lawns and
flowerbeds.
Note: Never use a higher speed
setting than necessary to
perform a task.
Remember, the higher
the engine speed, the louder the blower noise. Minimize dust
by using blower at lower speeds. Keep debris on your
property. Be Smart - be a good neighbor.
A
B
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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.
Level 3 = See your dealer.
Click HERE or go to http://www.echo-usa.com/products/maintenance-kit for
information on Maintenance Kits.
Maintenance Intervals
COMPONENT/SYSTEM
MAINTENANCE
PROCEDURE
REQUIRED
SKILL LEVEL
Daily or Before Use
Throttle Connecting Rod Grease 1
Air Filter
Inspect/Clean
3
1Choke Shutter
Fuel System Inspect
1
Cooling System Clean 2
Recoil Starter Rope Inspect/Clean
3
1
Screws/Nuts/Bolts Inspect/Tighten/Replace
3
MAINTENANCE PB-2520
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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
Low evaporative fuel tanks DO NOT require regular maintenance to main-
tain emission integrity.
2
See your dealer for maintenance.
3
Replacement is recommended based on the finding of damage or wear
during inspection.
Throttle Connecting Rod
Level 1.
Every Refuel
Fuel System Inspect
1
1
3 Months
Air Filter Replace
3
1
Fuel Filter
Inspect
3
Fuel Cap Gasket
Spark Plug Inspect/Clean/Replace
3
Muffler Spark Arrestor Inspect/Clean
2
3
Cylinder Exhaust Port Inspect/Clean/De-carbon
2
Yearly
Fuel Filter Inspect/Replace
3
1
Fuel Cap Gasket Replace
3
Parts Required: Lithium Based Grease
COMPONENT/SYSTEM
MAINTENANCE
PROCEDURE
REQUIRED
SKILL LEVEL
PB-2520 MAINTENANCE
X7501190001 27
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ENGLISH
1. Apply grease to throttle
connecting rod at location (A).
Air Filter
Level 1.
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. Remove air filter and lightly
brush debris from filter.
Replace filter if it is damaged, fuel soaked, very dirty, or the rubber
sealing edges are deformed. Clean the filter with a neutral detergent.
Do not use solvents for cleaning.
4. If filter can be reused, be certain:
• The entire frame of the filter is securely seated in the housing.
• It is installed with the original side out.
5. Install air filter cover.
Fuel Filter
Level 1.
Parts Required: Tune-Up Kit
Parts Required: Tune-Up Kit
A
MAINTENANCE PB-2520
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© 8/2017 ECHO Inc.
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 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.
Spark Plug
Level 2.
Use only NGK BPMR8Y 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 150-170 kgf • cm (130-150 in • lbf).
Parts Required: Tune-Up Kit
0.65 mm (0.026 in.)
PB-2520 MAINTENANCE
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ENGLISH
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.
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.
Cleaning Grill
1. Brush accumulated debris from
crankcase intake grill (A) and
discharge grill (B).
A
B
MAINTENANCE PB-2520
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© 8/2017 ECHO Inc.
Cleaning Cylinder Fins
Blow compressed air through
crankcase intake grill and discharge
grill at area shown.
Exhaust System
See your dealer for maintenance.
Carburetor Adjustment
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 335 m (1100 ft.) above sea level
(ASL) (96.0 kPa). To maintain proper engine operation and emission
compliance above 335 m (1100 ft.) ASL the carburetor may
need to be
adjusted by an authorized ECHO service dealer.
If the engine is adjusted for operation above 335 m (1100 ft.) ASL, the
carburetor must be re-adjusted when operating the engine below
335 m (1100 ft.) ASL, otherwise severe engine damage may result.
Level 2.
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.
Before adjustment make sure that:
• Air filter is clean and properly installed.
• Spark arrestor screen is free of carbon.
• Blower pipes are installed.
PB-2520 TROUBLESHOOTING
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ENGLISH
1. Start engine, run at idle for one minute.
2. Complete warm up by running at full throttle for 5 minutes, operating
choke twice to clear air from carburetor chambers.
3. 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.
TROUBLESHOOTING
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.
A
TROUBLESHOOTING PB-2520
32 X7501190001
© 8/2017 ECHO Inc.
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
See your Echo
dealer
Spark at
end of plug
wire
No spark
Stop switch
OFF
Electrical prob-
lem
Interlock switch
Turn switch to ON
See your Echo
dealer
See your Echo
dealer
Spark at
plug
Spark gap
incorrect
Covered with
carbon
Fouled with fuel
Plug defective
Adjust to 0.65mm
(0.026 in.)
Clean or replace
spark plug
Safety
Interlock
Switch not
activated
Suction tube or
fan housing
cover not
properly
assembled
Re install Suction
tube, or tighten
knob on fan
housing cover.
Engine
runs,
but dies
or
does not
acceler-
ate
properly
Air filter Air filter dirty Normal wear Clean or replace
Fuel filter
Fuel filter dirty
Contaminants/
residues in fuel
Replace
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
See your Echo
dealer
Cooling
System
Cooling
system dirty/
plugged
Extended oper-
ation in dirty/
dusty locations
Clean
Spark
Arrestor
Screen
Spark arrestor
screen
plugged
Normal wear Replace
PB-2520 STORAGE
X7501190001 33
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ENGLISH
STORAGE
During operation the muffler or catalytic muffler and surround-
ing cover become hot. Always keep exhaust area clear of flam-
mable 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 fol-
lowing:
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.
Engine
does not
crank
N/A
Internal engine
problem
See your Echo
dealer
Engine
runs,
blower
doesn't
work or is
weak/
uneven
Blower pipe
Pipe clogged
Build-up of
debris
Unclog
Pipe loose Vibration Tighten
Pipe damaged Wear/Misuse Replace
ENGINE PROBLEM TROUBLESHOOTING CHART
Problem Check Status Cause Remedy
SPECIFICATIONS PB-2520
34 X7501190001
© 8/2017 ECHO Inc.
7. Allow engine to cool. Remove the spark plug lead from the spark plug.
Remove the spark plug. Pour 7 cc (0.25 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. Connect the spark plug lead to the spark plug.
11. Remove blower pipe assembly from unit.
SPECIFICATIONS
MODEL PB-2520
Length 324 mm (12.8 in.) (without blower pipes)
958 mm (37.7 in.) (with blower pipes)
Width 233 mm (9.2 in.)
Height 355 mm (14.0 in.)
Weight (dry) 3.6 kg (7.9 lb.) (without blower pipes)
3.9 kg (8.6 lb.) (with blower pipes)
Engine Type Air cooled, two-stroke, single cylinder gasoline
engine
Bore 34.0 mm (1.34 in.)
Stroke 28.0 mm (1.1 in.)
Displacement 25.4 cm
3
(1.55 in.
3
)
Exhaust Spark arrestor muffler or spark arrestor muffler with
catalyst
Carburetor Diaphragm with purge pump
Ignition System Flywheel magneto, capacitor discharge ignition type
Spark Plug NGK BPMR8Y - Gap 0.65 mm (0.026 in.)
Fuel Mixed (Gasoline and Two-stroke Oil)
Fuel/Oil Ratio 50:1 Power Blend X
™
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 E-15 or
E-85.
PB-2520 SPECIFICATIONS
X7501190001 35
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ENGLISH
Oil Power Blend X
™
or ECHO Red Armor
®
Premium
Universal 2-Stroke Oil
Fuel Tank Capacity 0.55 l (18.6 US fl. oz.)
Starter System Automatic Recoil Starter, centrifugal type
Idle Speed 3000 RPM
Wide Open Throttle Speed
(W.O.T.)
7500 RPM
Maximum Air Speed with
pipes (MPH)
76.2 m/sec (170 mph)
Air Volume 12.8 m
3
/min. (453 ft.
3
/min.)
Sound Level at 15m (50 ft.)
dB(A) scale per ANSI OPEI
B175.2
70 dB(A)
MODEL PB-2520
PRODUCT REGISTRATION PB-2520
36 X7501190001
© 8/2017 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.
PB-2520 PRODUCT REGISTRATION
X7501190001 37
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ENGLISH
NOTES PB-2520
38 X7501190001
© 8/2017 ECHO Inc.
NOTES
PB-2520 NOTES
X7501190001 39
© 8/2017 ECHO Inc.
ENGLISH
ECHO, INCORPORATED
400 Oakwood Road
Lake Zurich, IL 60047
www.echo-usa.com
P46814001001 - P46814999999
P47115001001 - P47115999999
