Echo PB-251 - 11-09 User manual

Power Blower
Operator's Manual
MODEL PB-251
X750009765
11/09
X7501180005
WARNING
Read rules for safe operation and instructions carefully. ECHO provides this
Operator's Manual, which must be read and understood for proper and safe opera-
tion.

2
Copyright© 2010 By Echo, Incorporated
All Rights Reserved.
Ta b l e o f Co n T e n T s
Introduction................................................................2
- The Operator's Manual .......................................2
Safety .........................................................................3
- Manual Safety Symbols and Important
Information .........................................................3
- International Symbols.........................................3
- Personal Condition and Safety Equipment ......... 3
- Equipment Check................................................6
Emission Control .......................................................6
Description.................................................................7
Contents .....................................................................8
Assembly....................................................................9
- Blower Application.............................................9
Operation..................................................................10
- Fuel ...................................................................10
- Starting Cold Engine.........................................12
- Starting Warm Engine.......................................13
- Stopping Engine................................................13
- Operating Blower..............................................14
Maintenance.............................................................15
- Skill Levels .......................................................15
- Maintenance Intervals.......................................15
- Air Filter ...........................................................16
- Fuel Filter..........................................................16
- Spark Plug.........................................................17
- Cooling System.................................................17
- Exhaust System.................................................18
- Carburetor Adjustment......................................20
- High Altitude Operation ................................20
Troubleshooting .......................................................21
Storage .....................................................................22
Specications ...........................................................23
Warranty Statements ................................................ 24
Servicing Information ..............................................28
- Parts/Serial Number..........................................28
- Service ..............................................................28
- ECHO Consumer Product Support...................28
- Warranty Card...................................................28
- Additional or Replacement Manuals ................28
Specications, descriptions and illustrative material in this
literature are as accurate as known at the time of publica-
tion, but are subject to change without notice. Illustrations
may include optional equipment and accessories, and may
not include all standard equipment.
In T r o d u C T I o n
Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-
job dependability. Read and understand this manual. You will nd it easy to use and full of helpful operating tips and
SAFETY messages.
T h e o p e r a T o r 'sm a n u a l
Read and understand this manual before operation. Keep it in a safe
place for future reference. It contains specications and information
for operation, starting, stopping, maintenance, storage and assembly
specic to this product.
1
Power Blower
Operator's Manual
MODEL PB-251
X75300
09/06
X753118
WARNING
Read rules forsa fe operatio n and instruc tions carefully. ECHO provi des this Opera tor's
Manual,which must be read and understood for proper and safeoperation.
PB251ef_091206.pmd

3
Po w e r Bl o w e r
oP e r a t o r 'sMa n u a l
sa f e T y
m a n u a l s a f e T y s y m b o l s a n d I m p o r T a n T I n f o r m a T I o n
Throughout this manual and on the product itself, you will nd 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.
I n T e r n a T I o n a l s y m b o l s
Symbol
description/application Symbol form/shape Symbol
description/application
Symbol form/shape
Read and understand
Operator's Manual. Fuel and oil mixture
Hot
Surface
Wear eyes, ears and
head protection
Finger Severing
Safety/Alert
Wear hand
protection. Use
two handed.
DO NOT smoke
near fuel.
DO NOT allow
ames or sparks
near fuel.
Wear slip resis-
tant foot wear.
p e r s o n a l C o n d I T I o n a n d s a f e T y e q u I p m e n T
WARNING
Power Blower users risk injury to themselves and others if the power blower is used improperly or safety precautions
are not followed. Proper clothing and safety gear must be worn when operating a blower.
WARNING
The safety alert symbol accompanied by the word
“WARNING” calls attention to an act or condi-
tion which CAN lead to serious personal injury or
death if not avoided.
CIRCLE AND SLASH SYMBOL
This symbol means the specic action
shown is prohibited. Ignoring these prohi-
bitions can result in serious or fatal injury.
CAUTION
The safety alert symbol accompanied by the word
“CAUTION” calls attention to an act or condition
which may lead to minor or moderate personal
injury if not avoided.
NOTE
This enclosed message provides tips for use, care and
maintenance of the unit.
IMPORTANT
The enclosed message provides information neces-
sary for the protection of the unit.
DANGER
The safety alert symbol accompanied by the word
“DANGER” calls attention to an act or condition
which WILL lead to serious personal injury or
death if not avoided.
Symbol
description/application Symbol form/shape Symbol
description/application
Symbol form/shape
Carburetor adjustment
- Idle speed
Carburetor adjustment
- High speed mixture
Emergency stop
Carburetoradjustment
- Low speed mixture
Ignition
ON/OFF
Primer bulb
Choke Control
"Cold Start"
Position
(Choke Closed)
Choke Control
"Run"
Position
(Choke Open)
Idle Speed Fast Speed

4
Physical Condition
Your judgment and physical dexterity may not be good:
• if you are tired or sick,
• if you are taking medication,
• if you have taken alcohol or drugs.
Operate unit only if you are physically and mentally well.
Eye Protection
Wear eye protection that meets ANSI Z87.1 or CE requirements whenever you operate the unit.
Hand Protection
Wear no-slip, heavy-duty work gloves to improve your grip on the blower handle. Gloves also reduce the transmission
of machine vibration to your hands.
Breathing Protection
Wear a facemask to protect against dust.
Hearing Protection
ECHO recommends wearing hearing protection whenever unit is used.
Proper Clothing
Wear snug tting, durable clothing;
• Pants should have long legs, shirts with long sleeves.
• DO NOT WEAR SHORTS,
• DO NOT WEAR TIES, SCARVES, and JEWELRY.
Wear sturdy work shoes with nonskid soles:
• DO NOT WEAR OPEN TOED SHOES,
• DO NOT OPERATE UNIT BAREFOOTED.
Keep long hair away from engine and blower intake. Retain hair with cap or net.
Hot Humid Weather
Heavy protective clothing can increase operator fatigue, which may lead to heat stroke. Schedule heavy work for early
morning or late afternoon hours when temperatures are cooler.
Vibration and Cold
It is believed that a condition called Raynaud’s Phenomenon, which affects the ngers of certain individuals, may be
brought about by exposure to vibration and cold. Exposure to vibration and cold may cause tingling and burning sen-
sations, followed by loss of color and numbness in the ngers. The following precautions are strongly recommended,
because the minimum exposure, which might trigger the ailment, is unknown.
• Keep your body warm, especially the head, neck, feet, ankles,
hands, and wrists.
• Maintain good blood circulation by performing vigorous arm
exercises during frequent work breaks, and also by not smoking.
• Limit the hours of operation. Try to ll 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 ngers
followed by whitening and loss of feeling, consult your physician
before further exposing yourself to cold and vibration.

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Po w e r Bl o w e r
oP e r a t o r 'sMa n u a l
DANGER
Do not operate this product indoors or in inadequately ventilated
areas. Engine exhaust contains poisonous emissions and can cause
serious injury or death.
Read the Manuals
• Provide all users of this equipment with the Operator’s Manual
and Safety Manual for instructions on Safe Operation.
Clear the Work Area
• Spectators and fellow workers must be warned, and children and
animals prevented from coming nearer than 15 m (50 ft.) while
the unit is in use.
• Take wind conditions into account: avoid open doors and win-
dows.
• Do not point blower at people or animals.
• Review area to be cleared. Look for potential hazards such as
stones or metal objects.
Keep a Firm Grip
• Hold the handle in one hand, with thumb and ngers encircling
the handle.
Keep a Solid Stance
• Maintain footing and balance at all times. Do not stand on slip-
pery, 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 ammable debris. Avoid contact dur-
ing and immediately after operation.
Repetitive Stress Injuries
It is believed that overusing the muscles and tendons of the ngers, hands, arms, and shoulders may cause soreness,
swelling, numbness, weakness, and extreme pain in those areas. Certain repetitive hand activities may put you at a high
risk for developing a Repetitive Stress Injury (RSI). An extreme RSI condition is Carpal Tunnel Syndrome (CTS), which
could occur when your wrist swells and squeezes a vital nerve that runs through the area.
Some believe that prolonged exposure to vibration may contribute to CTS. CTS can cause severe pain for months or
even years.
To reduce the risk of RSI/CTS, do the following:
• Avoid using your wrist in a bent, extended, or twisted position.
Instead try to maintain a straight wrist position. Also, when
grasping, use your whole hand, not just the thumb and index
nger.
• Take periodic breaks to minimize repetition and rest your hands.
• Reduce the speed and force with which you do the repetitive
movement.
• Do exercises to strengthen the hand and arm muscles.
• Immediately stop using all power equipment and consult a doc-
tor if you feel tingling, numbness, or pain in the ngers, hands,
wrists, or arms. The sooner RSI/CTS is diagnosed, the more
likely permanent nerve and muscle damage can be prevented.

6
e q u I p m e n T C h e C k
WARNING
Use only ECHO approved attachments. Serious injury may result from the use of a non-approved attachment combi-
nation. 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.
• Do not use blower if any part is missing or damaged.
• Have repairs done only by an authorized ECHO Service dealer.
• Do not use any attachment, accessory or replacement part unless it is recommended in this Operator's Manual.
An Emission Control Label is located on the unit. (This is an EXAMPLE ONLY; information on label varies by engine
FAMILY).
WARNING
Moving parts can amputate ngers or cause severe injuries. Keep hands, clothing and loose objects away from all
openings.
• ALWAYS stop engine, disconnect spark plug, and make sure all moving parts have come to a complete stop
before removing obstructions, clearing debris, or servicing unit.
• DO NOT start or operate unit unless all guards and protective covers are properly assembled to unit.
• NEVER reach into any opening while the engine is running. Moving parts may not be visible through openings.
WARNING
Check fuel system for leaks due to fuel tank damage, especially if the unit is dropped. If damage or leaks are found,
do not use unit, otherwise serious personal injury or property damage may occur. Have unit repaired by an authorized
servicing dealer before using.
PRODUCT EMISSION DURABILITY (EMISSION COMPLIANCE PERIOD)
The 300 hour emission compliance period is the time span selected by the manufacturer certifying the engine emis-
sions output meets applicable emissions regulations, provided that approved maintenance procedures are followed as
listed in the Maintenance Section of this manual.
em I s s I o n Co n T r o l (e x h a u s T & e v a p o r a T I v e )
EPA 2010 and Later and/or C.A.R.B. TIER III
The emission control system for the engine is EM/TWC (Engine Modication and 3-way Catalyst) and for the fuel tank
the Control System is EVAP (Evaporative Emissions) or N (for nylon tank). Evaporative emission may be applicable to
California models only.

7
Po w e r Bl o w e r
oP e r a t o r 'sMa n u a l
de s C r I p T I o n
Locate the safety decal on your unit. Make sure the decals are legible and that you understand and follow the instruc-
tions on them. If a decal cannot be read, a new one can be ordered from your ECHO dealer. See PARTS ORDERING
instructions for specic information.
P/N X505002310
P/N X505002080
65 Category I
dB(A)
Measured at 50 ft. (15m) per ANSI B175.2
Hot Decal (near mufer and engine)
General Warning Decal (located on blower housing)
P/N X508000120
Sound Label (located on blower housing)
1
5
4
1
2
4
5
67
910
12
13
14
3
8
11

8
1. SAFETY DECAL - Lists important safety precautions.
2. STOP SWITCH - "SLIDE SWITCH" mounted on top of handle. Push forward to start and run. Slide back to stop.
3. SPARK PLUG - Provides spark to ignite fuel mixture.
4. SAFETY DECAL - Lists important safety precautions.
5. SAFETY DECAL - Lists important safety precautions.
6. FUEL TANK CAP - Covers and seals fuel tank.
7. RECOIL STARTER HANDLE - Pull recoil handle slowly until recoil starter engages, then quickly and rmly.
When engine starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.
8. SPARK ARRESTOR MUFFLER OR SPARK ARRESTOR MUFFLER WITH CATALYST -The mufer or
catalytic mufer controls exhaust noise and emission. The spark arrestor screen prevents hot, glowing particles of
carbon from leaving the mufer. Keep exhaust area clear of ammable debris.
9. CHOKE - Choke is located on top of the air cleaner. Move choke lever to "COLD START" ( ) to close choke
for cold starting. Move choke lever to "RUN" ( ) position to open choke.
10. PURGE BULB - Pumping purge bulb before starting engine draws fresh fuel from the fuel tank, purging air from
the carburetor. Pump purge bulb until fuel is visible and ows freely in the clear fuel tank return line. Pump purge
bulb an additional 4 or 5 times..
11. BLOWER PIPES - Exclusive positive locking system.
12. THROTTLE POSITION LEVER - Pull back to increase engine speed. Friction washers maintain throttle lever
setting.
13. THROTTLE TRIGGER - Spring loaded to return to idle when released. During acceleration, press trigger gradu-
ally for best operating technique.
14. AIR CLEANER - Contains replaceable air lter element.
Co n T e n T s
1 - Power Head
1 - Blower Pipe (upper)
1 - Blower Pipe
1 - Operator's Manual
1 - Warranty Registration Card
1 - Echo Power Blend X TM 2-stroke oil sample
1
Power Blower
Operator's Manual
MODEL PB-251
X75300
09/06
X753118
WARNING
Read rules fo r s afe operati on and instruc tions carefu lly. ECHO pro vides this Ope rator's
Manual,which must be read and understood for proper and safe operation.
PB251ef_091206.pmd

9
Po w e r Bl o w e r
oP e r a t o r 'sMa n u a l
as s e m b l y
WARNING
Never perform maintenance or assembly procedures with engine
running or serious personal injury may result.
I n s T a l l b l o w e r p I p e s
1. Stand unit upright on blower base.
2. Release locking ring (C) with a coin or screwdriver, and rotate so
that lock symbol (A) is at top of ring.
3. Align locking ribs (E) on upper blower pipe with recesses (D) in
locking ring, and slide upper blower pipe into locking ring.
4. After inserting upper blower pipe into fan case so that line (F)
meets locking ring (C), rotate locking ring clockwise 1/8 turn to
lock upper blower pipe in place.
5. Align tabs (H) with grooves (G) and slide lower blower pipe over
upper pipe until there is light resistance. Do not force connection.
6. Hold upper pipe, and turn lower pipe clockwise, engaging posi-
tive locking channels until connection is rm. Do not force con-
nection.
NOTE
Blower use will eventually loosen pipe connections. Exclusive
positive locking system allows pipes to be tightened. If loosening
occurs, remove lower straight pipe, and install according to instruc-
tions 5 & 6.
blower pipe (upper)
blower pipe (upper)
blower pipe (lower)

10
WARNING
Moving parts can amputate ngers or cause severe injuries. Keep hands, clothing and loose objects away from all
openings. Always stop engine, disconnect spark plug, and make sure all moving parts have come to a complete stop
before removing obstructions, clearing debris, or servicing unit. 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.
f u e l
NOTICE: Use of unmixed, improperly mixed, or fuel older than 90 days, (stale fuel), may cause hard starting, poor
performance, or severe engine damage and void the product warranty. Read and follow instructions in the Storage
section of this manual.
WARNING
Alternative fuels, such as E-15 (15% ethanol), E-85 (85% ethanol) or any fuels not meeting ECHO requirements are
NOT approved for use in ECHO 2-stroke gasoline engines. Use of alternative fuels may cause performance prob-
lems, loss of power, overheating, fuel vapor lock, and unintended machine operation, including, but not limited to,
improper clutch engagement. Alternative fuels may also cause premature deterioration of fuel lines, gaskets, carbu-
retors and other engine components.
r e m o v e b l o w e r p I p e s
1. Release locking ring (C) with a coin or screwdriver, and rotate
ring so that lock symbol (A) is at top of ring.
2. Remove pipes from locking ring.
op e r a T I o n
WARNING
Operation of this equipment may create sparks that can start res around dry vegetation. This unit is equipped
with a spark arrestor and a spark arrestor may be required. The operator should contact local re agencies for
laws or regulations relating to re prevention requirements.

11
Po w e r Bl o w e r
oP e r a t o r 'sMa n u a l
Mixing Instructions
1. Fill an approved fuel container with half of the required amount
of gasoline.
2. Add the proper amount of 2-stroke oil to gasoline.
3. Close container and shake to mix oil with gasoline.
4. Add remaining gasoline, close fuel container, and remix.
IMPORTANT
Spilled fuel is a leading cause of hydrocarbon emissions. Some
states may require the use of automatic fuel shut-off containers
to reduce fuel spillage.
After use
• DO NOT store a unit with fuel in its tank. Leaks can occur. Return
unused fuel to an approved fuel storage container.
Storage - Fuel storage laws vary by locality. Contact your local gov-
ernment for the laws affecting your area. As a precaution, store fuel in
an approved, airtight container. Store in a well-ventilated, unoccupied
building, away from sparks and ames.
Handling Fuel
DANGER
Fuel is VERY ammable. Use extreme care when mixing, storing or handling or serious personal injury may result.
• Use an approved fuel container.
• DO NOT smoke near fuel.
• DO NOT allow ames or sparks near fuel.
• Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize.
• NEVER refuel a unit when the engine is HOT or RUNNING!
• DO NOT ll fuel tanks indoors. ALWAYS ll fuel tanks outdoors over bare ground.
• DO NOT overll fuel tank. Wipe up spills immediately.
• Securely tighten fuel tank cap and close fuel container after refueling.
• Inspect for fuel leakage. If fuel leakage is found, do not start or operate unit until leakage is repaired.
• Move at least 3m (10 ft.) from refueling location before starting the engine.
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.
Two Stroke Oil - A two-stroke engine oil meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FC/FD Standards must
be used. Echo brand premium Power Blend X TM Universal 2-Stroke Oil meets these standards. Engine problems due to
inadequate lubrication caused by failure to use an ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FC/FD certied oil, such
as Echo premium Power Blend X TM, will void the two-stroke engine warranty.
IMPORTANT
Stored fuel ages. Do not mix more
fuel than you expect to use in thirty
(30) days, ninety (90) days when a
fuel stabilizer is added.
IMPORTANT
Stored two-stroke fuel may separate.
ALWAYS shake fuel container thor-
oughly before each use.
IMPORTANT
Echo premium Power Blend X TM Universal 2-Stroke Oil may be mixed at 50:1 ratio for application in all Echo en-
gines sold in the past regardless of ratio specied in those manuals.

12
s T a r T I n g C o l d e n g I n e
1. Stop Switch
Move stop switch button (A) away from the STOP position.
2. Throttle Position Lever
Move throttle position lever (B) midway between idle and full
throttle positions.
3. Choke
Move choke (C) to Cold Start ( ) Position.
4. Purge Bulb
Pump purge bulb (D) until fuel is visible and ows freely in the
clear fuel tank return line.
B
A
D
C
IMPORTANT
Recoil starter: Use short pulls - only 1/2 ~ 2/3 of rope for start-
ing. Do not allow the rope to snap back in. Always hold the unit
rmly.
5. Recoil Starter
Place the unit on a at, clear area. Firmly grasp throttle grip with
left hand and rapidly pull recoil starter handle/rope (E) until en-
gine res , or maximum 5 pulls.
6. Choke
Move choke lever (C) to Run ( ) position if necessary, restart
engine.
NOTE
If engine does not start after 5 pulls, repeat instructions 3-6.
7. After engine warm up, gradually depress throttle trigger to in-
crease engine RPM to operating speed.
NOTE
Allow engine to warm up 3 minutes before use.
E
C

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Po w e r Bl o w e r
oP e r a t o r 'sMa n u a l
E
B
A
D
s T a r T I n g w a r m e n g I n e
The starting procedure is the same as Cold Start except DO NOT close
the choke.
1. Stop Switch
Move stop switch button (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 (D) until fuel is visible and ows freely in the
clear fuel tank return line.
4. Recoil Starter
Place the unit on a at, clear area. Firmly grasp throttle grip with
left hand and rapidly pull recoil starter handle/rope (E) until en-
gine res.
IMPORTANT
Recoil starter: Use short pulls - only 1/2 ~ 2/3 of rope for start-
ing. Do not allow the rope to snap back in. Always hold the unit
rmly.
NOTE
If engine does not start after 5 pulls, use Cold Start Procedure.
s T o p p I n g e n g I n e
1. Throttle Trigger/Throttle Position Lever
Release throttle trigger (F). 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 (A) to “STOP” position.
WARNING
If engine does not stop when stop switch is moved to STOP posi-
tion, close choke - COLD START position - to stall engine. Have
your ECHO dealer repair stop switch before using blower again.
F
B
A

14
o p e r a T I n g b l o w e r
WARNING
Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a
poison gas. Breathing CO can cause unconsciousness, serious in-
jury, or death. Exhaust can cause serious burns. ALWAYS position
unit so that exhaust is directed away from your face and body.
WARNING
Always wear safety glasses, hearing protection and a face lter
mask or serious personal injury may result. Do not point the blower
pipe in the direction of people or pets.
Read the Safety Section carefully.
IMPORTANT
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 (F), or for continu-
ous 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 owerbeds.
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.
Two-hand Operation
For added comfort and control, grip throttle control handle with left
hand, and lower handle/stand with right hand.
F
B

15
Po w e r Bl o w e r
oP e r a t o r 'sMa n u a l
m a I n T e n a n C e I n T e r v a l s
ma I n T e n a n C e
Your ECHO blower is designed to provide many hours of trouble free service. Regular scheduled maintenance will help
your blower achieve that goal. If you are unsure or are not equipped with the necessary tools, you may want to take your
unit to an ECHO Service Dealer for maintenance. To help you decide whether you want to DO-IT-YOURSELF or have
the ECHO Dealer do it, each maintenance task has been graded. If task is not listed, see your ECHO Dealer for repairs.
s k I l l l e v e l
Level 1 = Easy to do. Common tools may be required.
Level 2 = Moderate difculty. Some specialized tools may be required.
ECHO offers REPOWERTM Maintenance Kits and Parts to make your maintenance job easier.
WARNING
Moving parts can amputate ngers or cause severe injuries. Keep hands, clothing and loose objects away from all
openings. Always stop engine, disconnect spark plug, and make sure all moving parts have come to a complete stop
before removing obstructions, clearing debris, or servicing unit. Allow unit to cool before performing service. Wear
gloves to protect hands from sharp edges and hot surfaces.
COMPONENT / SYSTEM MAINTENANCE
PROCEDURE
REQ'D
SKILL
LEVEL
DAILY OR
BEFORE USE
EVERY
REFUEL
3 MONTHS
OR 90
HOURS
YEARLY
600 HOURS
Air Filter Inspect/Clean 1I / C * R *
Choke Shutter Inspect/Clean 1I / C
Fuel Filter Inspect/Replace 1I * I / R *
Fuel Cap Gasket Inspect/Replace 1I * R *
Fuel System Inspect/Replace 1I (1) * I (1) *
Spark Plug Inspect/Clean/Replace 1I / C / R *
Cooling System Inspect/Clean 2I / C
Muffler Spark Arrestor Inspect/Clean/Replace 2I / C / R *
Cylinder Exhaust Port Inspect/Clean/Decarbon 2I / C
Recoil Starter Rope Inspect/Clean 1I / C *
Screws/Nuts/Bolts Inspect/Tighten/Replace 1I *
MAINTENANCE PROCEDURE LETTER CODES: I = INSPECT, R = REPLACE, C = CLEAN
IMPORTANT NOTE - Time intervals shown are maximum. Actual use and your experience will determine the
frequency of required maintenance.
MAINTENANCE PROCEDURE NOTES:
(1) Low evaporative fuel tanks DO NOT require regular maintenance to maintain emission integrity.
* All recommendations to replace are based on the finding of damage or wear during inspection.

16
a I r f I l T e r
Level 1.
Tools required: 25-50 mm (1-2 in.) Cleaning brush.
Parts required: REPOWERTM Air and Filter Kit
NOTE
Clean daily.
1. Close choke (Cold Start Position [ ]). This prevents dirt from
entering the carburetor throat when the air lter is removed. Brush
accumulated dirt from air cleaner area.
2. Remove air lter cover. Brush dirt from inside cover.
3. Remove air lter and lightly brush debris from lter. Replace
lter if it is damaged, fuel soaked, very dirty, or the rubber sealing
edges are deformed.
4. If lter can be reused, be certain it:
• Fits tightly in the air lter cavity.
• Is installed with the original side out.
5. Install air lter cover.
f u e l f I l T e r
Level 1.
Tools required: 200-250 mm (8-10 in.) length of wire with one end
bent into a hook. Clean rag, funnel, and an approved
fuel container.
Parts required: REPOWERTM Air and Filter Kit
DANGER
Fuel is VERY ammable. Use extreme care when mixing, storing
or handling.
1. Use a clean rag to remove loose dirt from around fuel cap and
empty fuel tank.
2. Use the “fuel line hook” to pull the fuel line and lter from the
tank.
3. Remove the lter from the line and install the new lter.

17
Po w e r Bl o w e r
oP e r a t o r 'sMa n u a l
0.65 mm
(0.026 in.)
C o o l I n g s y s T e m
Level 2.
Tools required: 25-50 mm (1-2 in.) cleaning brush, 4 mm Hex
Wrench, pointed wood stick.
Parts Required: None, if you are careful.
IMPORTANT
To maintain proper engine operating temperatures, cooling air must
pass freely through the cylinder n area. This ow 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 ns is
considered “Normal Maintenance”. Any failure attributed to lack of
maintenance is not warranted.
Cleaning Grill
1. Brush accumulated debris from crankcase intake grill above the
fuel tank.
s p a r k p l u g
Level 2.
Tools required: T-Wrench, Feeler gauge
Parts Required: REPOWERTM Tune-Up Kit
IMPORTANT
Use only NGK BPM-8Y spark plug (BPMR-8Y in Canada)
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).

18
Cleaning Cylinder Fins
1. Remove engine cover (two screws), pull cover away from engine.
Clean cylinder ns to allow cooling air to pass freely.
2. Loosely reassemble engine cover with two screws.
3. Tighten all screws securely.
e x h a u s T s y s T e m
Spark Arrestor Screen
Level 2.
Tools required: Cross Head Screwdriver, 4 mm Hex Wrench, Soft
metal brush
Parts Required: Spark arrestor screen, Gasket
IMPORTANT
Carbon deposits in mufer will cause a drop in engine output and
overheating. Spark arrestor screen must be checked periodically.
1. Remove two engine cover screws and remove cover from engine.
Clean cylinder ns with brush to allow cooling air to pass freely.
2. Remove spark arrestor cover (A), deector (B), plate (C), gasket
(D), and spark arrestor screen (E) from mufer. Replace screen if
plugged with carbon deposits.
NOTE
When cleaning carbon deposit, be careful not to damage the cata-
lytic element inside mufer.
3. Install spark arrestor screen, gasket, plate, deector, and cover.
4. Install engine cover or mufer cover and attach spark plug lead.
5. Tighten all screws securely.
A
B
D
C
E

19
Po w e r Bl o w e r
oP e r a t o r 'sMa n u a l
A
B
Exhaust Port Cleaning
Level 2.
Tools required: 4 mm Hex Wrench, Wood or plastic scraper
Parts Required: As needed: Heat Shield
1. Remove spark plug lead from spark plug, and remove engine
cover (2 screws).
2. Place piston at top dead center. Remove mufer (A) and heat
shield (B).
3. Use a wood or plastic scraping tool to clean deposits from cylin-
der exhaust port.
IMPORTANT
Never use a metal tool to scrape carbon from the exhaust port.
Do not scratch the cylinder or piston when cleaning the exhaust
port. Do not allow carbon particles to enter the cylinder.
4. Inspect heat shield, and replace if damaged.
5. Install heat shield and mufer.
6. Tighten mufer mounting bolts (or nuts) to 60-70 in•lbf (70-80
kgf•cm).
7. Install engine cover and attach spark plug lead.
8. Start engine, and warm to operating temperature.
9. Stop engine, and re-tighten mounting bolts (or nuts) to specica-
tions.

20
C a r b u r e T o r a d j u s T m e n T
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 ad-
justed by an authorized ECHO service dealer.
IMPORTANT
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..
Level 2.
Tools required: Screwdriver, tachometer (Echo P/N 99051130017)
Parts required: None.
NOTE
Every unit is run at the factory and the carburetor is set in compli-
ance with emission regulations. Carburetor adjustments, other than
idle speed, must be performed by an authorized ECHO dealer.
Idle Adjustment
Before adjustment make sure that:
• Air lter is clean and properly installed.
• Spark arrestor screen is free of carbon.
• Blower pipes are installed.
1. Start engine, run at idle for one minute.
2. Complete warm up by running at full throttle for 5 minutes, oper-
ating choke twice to clear air from carburetor chambers.
3. Check idle speed and reset if necessary. If a tachometer is avail-
able, idle speed screw (A) should be set to the specications
found on Page 23 "Specications" of this manual. Turn idle
screw (A) clockwise to increase idle speed; counter clockwise to
decrease idle speed. A