Page 1
Power Blower
Operator's Manual
MODEL PB-750
Serial Number 05001001 - 05999999
X7501127400
WARNING DANGER
Read rules for safe operation and all instructions carefully. ECHO provides this Operator's
Manual which must be read and understood for proper and safe operation.
X750004870
09/02
Page 2
2
INTRODUCTION
Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-job
dependability. Read and understand this manual. You will find it easy to use and full of helpful operating tips and
SAFETY messages.
THE OPERATOR'S MANUAL
Read and understand this manual before operation. Keep it in a safe
place for future reference. It contains specifications and information for
operation, starting, stopping, maintenance, storage and assembly
specific to this product.
TABLE OF CONTENTS
Introduction ...............................................................2
- The Operator's Manual .......................................2
Manual Safety Symbols and Important Information .. 3
Safety .........................................................................3
- Decals ................................................................. 3
- International Symbols......................................... 4
Safety Instructions .................................................... 4
- Personal Condition and Safety Equipment .........4
- Extended Operation/Extreme Conditions ............5
- Equipment ...........................................................5
- Safe Operation .................................................... 6
Emission Control........................................................ 6
Description ................................................................7
- Contents .............................................................7
Specifications.............................................................9
Assembly ................................................................. 10
- Install Blower Pipes ..........................................1 0
Pre-Operation ........................................................... 11
- Fuel ................................................................... 11
Operation ................................................................. 12
- Starting Cold Engine ......................................... 12
- Starting Warm Engine....................................... 1 3
- Stopping Engine ............................................... 13
CopyRight© 2002 By Echo, Incorporated
All Rights Reserved.
- Operating Blower .............................................. 14
Maintenance ............................................................ 15
- Skill Levels ........................................................ 15
- Maintenance Intervals ...................................... 15
- Air Filter ............................................................ 16
- Fuel Filter .......................................................... 16
- Spark Plug......................................................... 1 7
- Cooling System................................................. 1 7
- Exhaust System................................................. 1 8
- Carburetor Adjustment ..................................... 19
Troubleshooting ...................................................... 21
Storage..................................................................... 22
Servicing Information............................................... 24
- Parts.................................................................. 24
- Service ..............................................................24
- ECHO Consumer Product Support.................... 24
- Warranty Registration ...................................... 24
- Additional or Replacement Manuals ................2 4
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.
Page 3
POWER BLOWER
OPERATOR'S MANUAL
MANUAL SAFETY SYMBOLS AND IMPORTANT INFORMATION
Throughout this manual and on the product itself, you will find safety
alerts and helpful information messages preceded by symbols or key
words. The following is an explanation of those symbols and key words
and what they mean to you.
This symbol accompanied by the words WARNING and
DANGER calls attention to an act or condition that can lead
to serious personal injury to operator and bystanders.
IMPORTANT
IMPORTANT The enclosed message
provides information necessary for the
protection of the unit.
3
NOTE
The circle with the slash symbol means whatever is shown
within the circle is prohibited.
SAFETY
DECALS
Locate these safety decals on your unit. The complete unit illustration,
found in the "DESCRIPTION" section, will help you locate them. Make
sure the decals are legible and that you understand and follow the
instructions on them. If a decal cannot be read, a new one can be
ordered from your ECHO dealer. See PARTS ORDERING instructions
for specific information.
General Warning Decal (located on blower housing)
NOTE This enclosed message provides tips for
use, care and maintenance of the unit.
Hot Decal (near muffler)
P/N 89016006361
P/N 89016009461
71 Category III
Measured at 50 ft. (15m) per ANSI B175.2
dB(A)
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4
INTERNA TIONAL SYMBOLS
SYMBOL
DESCRIPTION SYMBOL DESCRIPTION
Read and under-
stand Operator's
Manual.
Wear eyes, ears
and head
protection
Hot
Surface
Safety/Alert
DO NOT allow
flames or sparks
near fuel.
SAFETY INSTRUCTIONS
PERSONAL
CONDITION AND SAFETY EQUIPMENT
Fuel and oil
mixture
Finger
Severing
Wear hand
protection. Use
two handed.
Wear slip
resistant foot
wear.
DO NOT smoke
near fuel.
SYMBOL
DESCRIPTION
Ignition
ON/OFF
Emergency
Stop
Carburetor
Adjustment
- High speed
mixture
Carburetor
adjustment
- Low speed
mixture
SYMBOL
DESCRIPTION
Primer
Bulb
Choke Control
"Cold Start"
Position
(Choke Closed)
Choke Control
"Run"
Position
(Choke Open)
Carburetor
Adjustment
- Idle speed
W ARNING DANGER
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.
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 blower.
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 face mask to protect against dust.
Hearing Protection --
ECHO recommends wearing hearing protection whenever
unit is used.
Proper Clothing --
Wear snug fitting, durable clothing;
• Pants should have long legs, shirts with long sleeves.
• DO NOT WEAR SHORTS,
• DO NOT WEAR TIES, SCARVES, JEWELRY.
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.
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POWER BLOWER
OPERATOR'S MANUAL
5
EXTENDED OPERA TION/EXTREME CONDITIONS
Vibration and Cold --
It is believed that a condition called Raynaud’s Phenomenon, which
affects the fingers of certain individual 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 blower or other hand-held power equipment is not
required.
• If you experience discomfort, redness and swelling of the fingers
followed by whitening and loss of feeling, consult your physician
before further exposing yourself to cold and vibration.
Repetitive Stress Injuries --
It is believed that overusing the muscles and tendons of the fingers,
hands, arms, and shoulders may cause soreness, swelling, numbness,
weakness, and extreme pain in those areas. Certain repetitive hand
activities may put you at a high risk for developing a Repetitive Stress
Injury (RSI). An extreme RSI condition is Carpal Tunnel Syndrome
(CTS), which could occur when your wrist swells and squeezes a vital
nerve that runs through the area. Some believe that prolonged exposure
to vibration may contribute to CTS. CTS can cause severe pain for
months or even years.
To reduce the risk of RSI/CTS, do the
following:
• Avoid using your wrist in a bent,
extended, or twisted position. Instead try
to maintain a straight wrist position.
Also, when grasping, use your whole
hand, not just the thumb and index finger.
• Take periodic breaks to minimize repetition and rest your hands.
• Reduce the speed and force with which
you do the repetitive movement.
• Do 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.
EQUIPMENT
Before operation a complete check of the unit must be performed:
• Check unit for loose/missing nuts, bolts and screws. Tighten and/or
replace as needed.
• Inspect fuel lines, tank and area around carburetor for fuel leaks. DO
NOT operate unit if leaks are found.
• Keep exhaust area clear of flammable debris. Avoid contact during
and immediately after operation.
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6
SAFE OPERATION
Determine Operation Area --
• Review area to be cleared. Look for potential hazards
such as stones or metal objects.
• Spectators and fellow workers must be warned, and
children and animals prevented from coming nearer than
15 m (50 ft.) while the blower is in use.
• Take wind conditions into account: avoid open doors
and windows.
• Provide all operators of this equipment with the
Operator's Manual and instructions for safe operation.
• Do not point blower at people or animals.
• Start unit on ground with throttle at idle. Check that
blower pipe is not blocked by the ground or by any
objects.
W ARNING DANGER
Do not operate this product indoors or in inadequately ventilated areas. Engine exhaust contains
poisonous emissions and can cause serious injury or
death.
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 perform Maintenance or Assembly procedures
with engine running.
Noise Control
• Follow local noise regulations on sound levels and
hours of operations. Use only during appropriate hours.
• Never use a higher speed setting then necessary to
perform a task. The higher the engine speed the louder
the blower noise.
• Be a good neighbor.
Avoid Hot Surfaces
• During operation, the muffler or catalytic muffler and
surrounding cover may become extremely hot. Avoid
contact during and immediately after operation. Always
keep exhaust area clear of flammable debris. Allow the
engine and muffler to completely cool before performing
any maintenance activity.
Keep A Firm Grip
• Hold handle with fingers together encircling the handle.
EMISSION CONTROL
California Tier 2/EPA Phase 1
The emission control system for this engine is EM (Engine Modification with catalyst).
IMPORTANT ENGINE INFORMATION
ENGINE FAMILY: 1EHXS.0635RA
DISPLACEMENT: 63.3 CC
THIS ENGINE MEETS U.S. EPA PH2 AND 2000 AND
LATER CALIFORNIA EMISSION REGULATIONS FOR
S.O.R.E. REFER TO OWNER'S MANUAL FOR
MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.
An Emission Control Label is located on the unit. (This is an EXAMPLE ONLY, information on label varies by engine
FAMILY).
PRODUCT EMISSION DURABILITY
The 300 hour emission durability 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.
Page 7
DESCRIPTION
CONTENTS
1 - Power Head
1 - Flex Pipe
1 - Pipe w/swivel
1 - Straight Pipe
1 - Straight Pipe
1 - Operator's Manual
1 - Warranty Registration Card
1 - ECHO Emissions and Warranty Statement
1 - Plastic Bag
2 - Clamps w/screws
1 - Cable Clamp
1 - Bottle ECHO 2-Stroke Oil Mix
POWER BLOWER
OPERATOR'S MANUAL
1
7
17
2
3
5
4
7
9
8
10
11
12
6
13
16
14
15
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8
1. AIR CLEANER - Contains replaceable air filter element.
2. SPARK PLUG - Provides spark to ignite fuel mixture.
3. SAFETY DECAL - Lists important safety precautions.
4. SPARK ARRESTOR - CATALYTIC MUFFLER / MUFFLER - The muffler or catalytic muffler controls exhaust noise
and emission. The spark arrestor screen prevents hot, glowing particles of carbon from leaving the muffler. Keep
exhaust area clear of flammable debris.
5. CHOKE - Move lever up to "Cold Start" starting position and for emergency stopping. Move lever down to run
position.
6. PRIMER BULB - Pumping primer bulb before starting engine draws fresh fuel from the fuel tank, priming the carbure-
tor for starting. Pump primer bulb until fuel is visible and flows freely in the clear fuel tank return line. Pump bulb an
additional 4 or 5 times.
7. RECOIL STARTER HANDLE - Pull recoil 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.
8. FUEL TANK - Contains fuel and fuel filter.
9. FUEL TANK CAP - Covers and seals fuel tank.
10. SHOULDER HARNESS - Used to support unit on operator's back. The straps are adjustable.
11. HANDLE - Used by operator to direct and control air flow.
12. STOP SWITCH - Slide switch mounted on top of handle. Move forward to run, back to stop.
13. THROTTLE TRIGGER - Spring loaded to return to idle when released. During acceleration, press trigger gradually
for best operating technique.
14. LOCKING KNOB - Allows operator to adjust handle position for optimum comfort and control.
15. BLOWER PIPES - Twist lock design.
16. FLEXIBLE PIPE - Allows for full range of movement.
17. THROTTLE POSITION LEVER - Pull back to increase engine speed. Friction washers maintain throttle lever setting.
Page 9
POWER BLOWER
OPERATOR'S MANUAL
SPECIFICATIONS
MODEL ----------------------------------------------- PB-750
Length------------------------------------------------- 375 mm (14.76 in.)
Width-------------------------------------------------- 470 mm (18.5 in.)
Height ------------------------------------------------- 527 mm (20.75 in.)
Weight (dry) ------------------------------------------ 11.4 kg (25.1 lb.)
Engine Type ------------------------------------------ Air cooled, two-stroke, single cylinder gasoline engine
Displacement ----------------------------------------- 63.3 cc (3.86 cu. in.)
Bore---------------------------------------------------- 48.0 mm (1.89 in.)
Stroke-------------------------------------------------- 35.0 mm (1.38 in.)
Carburetor -------------------------------------------- Walbro Diaphragm, model WYK w/primer bulb
Ignition System -------------------------------------- Flywheel Magneto, capacitor discharge ignition type
Spark Plug -------------------------------------------- NGK BPM-8Y Gap 0.65 mm (0.026 in.)
Exhaust System -------------------------------------- Spark Arrestor Muffler
Fuel ---------------------------------------------------- Mixed (Gasoline and Two-stroke Oil)
Fuel/Oil Ratio ----------------------------------------- 50:1 ECHO High Performance, two-stroke air cooled engine oil
Gasoline ----------------------------------------------- 89 Octane unleaded. DO NOT use fuel containing methyl alcohol, more
than 10% ethyl alcohol or 15% MTBE.
O il ------------------------------------------------------ 50:1 ECHO High Performance, two-stroke air cooled engine oil
Fuel Tank Capacity ---------------------------------- 2.07 lit. (70.0 US fl. oz.)
Recoil Starter System -------------------------------- Automatic Recoil Starter Centrifugal Type
Idle Speed--------------------------------------------- 2400 - 3200 (RPM)
Wide Open Throttle Speed ------------------------- 6800 - 7300 (RPM)
Maximum Air Speed
(Measured at pipe end) ----------------------------- 338 KM/H (210 mph)
Average Air Volume
(Measured at pipe end) ----------------------------- 18.1 cu. m /min. (640 cu. ft./min.)
Maximum Air Volume
(Measured at housing) ------------------------------ 34.0 cu. m/min. (1200 cu. ft./min.)
Sound Level at 50 ft. dB(A) scale
per ANSI B175.2 ------------------------------------- 71 dB(A)
9
Page 10
10
ASSEMBLY
W ARNING DANGER
Never perform maintenance or assembly procedures with engine
running or serious personal injury may result.
INSTALL BLOWER PIPES
1 . Assemble clamps (A) onto both ends of flexible pipe (B).
E
A
B
C
2 . Assemble straight pipe with swivel (C) into flexible pipe (B).
3 . Position throttle linkage so cable passes between the elbow (G)
and frame and runs along the top of the flexible pipe. Remove clamp
screw (D) on handle (E). Spread clamp and install onto straight pipe
with swivel (C).
4 . Assemble flexible pipe (B) to elbow (G) on blower.
NOTE
A light lubricant may be used to ease assembly of flexible pipe to
blower elbow.
5 . Tighten clamps (A).
6 . Install throttle wire ties in second groove (F) at each end of flexible
pipe.
7 . Move handle (E) to desired position. Tighten knob (H) hand tight
and tighten clamp screw (D).
D
G
A
A
B
G
F
H
E
8 . Assemble straight pipe (J) to pipe with swivel (C), turning straight
pipe counter-clockwise to lock in place. Assemble straight pipe (K)
to straight pipe (J) the same way.
9 . Make sure all clamps are tight.
D
K
J
C
Page 11
PRE-OPERATION
FUEL
Fuel Requirements
Gasoline - Use 89 Octane [R+M/2 ] (mid grade or higher) gasoline
known to be good quality. Gasoline may contain up to 15% MTBE
(methyl tertiary-butyl ether). Gasohol containing methyl (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 Standards, must be used. Echo brand Premium
50:1 oil meets these standards. Engine problems due to inadequate
lubrication caused by failure to use an ISO-L-EGD and J.A.S.O. FC
certified oil, such as Echo Premium 50:1 Two-stroke Oil, will void the
two-stroke engine warranty. (Emission related parts
for two years, regardless of two-stroke oil used, per the statement listed
in the Emission Defect Warranty Explanation.)
IMPORTANT
Echo Premium 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.
Mixing Instructions
1 . Fill an approved fuel container with half of the required amount of
gasoline.
2 . Add 2-stroke oil to gasoline.
3 . Close container and shake to mix oil with gasoline.
4 . Add remaining gasoline and remix.
5 . Install fuel container cap and wipe any spilled fuel from container
and surrounding area.
Handling Fuel
only are covered
POWER BLOWER
OPERATOR'S MANUAL
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. Contact your ECHO dealer
for ordering information.
After Refueling -
• Wipe any spilled fuel from the unit.
• Move at least 3 m (10 ft.) from refueling
location before starting.
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, air tight container. Store in a well
ventilated, unoccupied building, away from
sparks and flames. Do not store fuel longer
than 30 days.
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.
11
W ARNING DANGER
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!
• NEVER refuel a unit with the engine running.
• DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks
outdoors over bare ground.
• Securely tighten fuel cap after refueling.
• Inspect for fuel leakage. If fuel leakage is found, do not start or
operate unit until leakage is repaired.
Stored two-stroke fuel may separate.
ALWAYS shake fuel container thoroughly before each use.
Page 12
12
OPERATION
• Provide all operators of this equipment with the Operator's Manual
and instructions for safe operation.
• Check unit for loose nuts, bolts and screws daily.
• Recoil starter: Use short pulls - only 1/2-2/3 of rope length for
starting. Do not allow the rope to snap back in. Always hold the unit
firmly.
STARTING COLD ENGINE
1 . Move throttle lever (A) forward to idle position.Slide stop switch
(B) forward to run position.
2 . Close Choke - Cold Start.
Move choke (C) up to "Cold Start" position ( ).
3. Primer Bulb -Prime.
Pump primer bulb (D) until fuel is visible and flows freely in the
clear fuel tank return line. Pump bulb an additional 4 or 5 times.
A
C
D
B
4 . Pull recoil starter handle (E) and engine should start.
5 . Move choke (C) down to run position ( ), and if necessary,
restart engine.
NOTE
If engine does not start after 5 pulls, repeat cold start procedures.
NOTE
Allow engine to warm up before use.
E
Page 13
POWER BLOWER
OPERATOR'S MANUAL
13
STARTING
1 . Move throttle lever (A) forward to idle position.
2 . Slide stop switch (B) forward to run position. Pull recoil starter
handle (C) and engine should start. Do not use choke (D)
NOTE
If engine does not start after 5 pulls, use cold start procedures.
WARM ENGINE
B
A
C
D
STOPPING ENGINE
1 . Move throttle lever (A) forward to idle position. Allow engine to
return to idle before shutting off engine.
IMPORTANT
Allow engine to return to idle before shutting off engine.
2. Move stop switch (B) to "Stop" position.
W ARNING DANGER
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 blower
again.
A
B
Page 14
14
OPERATING BLOWER
W ARNING DANGER
Always wear safety glasses, hearing protection, a face filter mask
and take all safety precautions 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 opening.
1. Use only during appropriate hours.
2 . Allow the engine to warm up at a fast idle for a few minutes.
3 . Use lower speed to blow dry leaves from a lawn or flower bed.
4. Additional speed may be necessary to clean grass and leaves from
walks, patios and drives.
5. Higher speed may be necessary to move gravel, dirt, snow, bottles
or cans from a driveway, street, parking lot or stadium.
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 and by dampening
material with water/mist when necessary. Keep debris on your
property.
Be Smart - be a good neighbor.
Page 15
POWER BLOWER
OPERATOR'S MANUAL
15
MAINTENANCE
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.
SKILL LEVEL
Level 1 = Easy to do. Most required tools come with unit.
Level 2 = Moderate difficulty. Some specialized tools may be required.
Level 3 = Experience required. Specialized tools are required. Echo recommends
the unit be returned to your Echo Dealer for servicing.
ECHO offers REPOWER
TM
Maintenance Kits and Parts to make your maintenance job easier. Just below each task
heading are listed the various part numbers required for that task. See your ECHO dealer for these parts.
MAINTENANCE INTER VALS
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Page 16
16
AIR FILTER
Level 1.
Tools required: 25 - 50 mm (1 - 2 in.) medium bristle paint brush.
Parts required: Air Filter P/N 13030508360
NOTE
Clean daily.
1 . Close choke (Cold Start Position). This prevents dirt from
entering the carburetor throat when the air filter is removed.
Brush accumulated dirt from the air cleaner area.
2 . Remove the air cleaner cover. Clean and inspect the element for
damage. If element is fuel soaked and very dirty, replace.
3 . If element can be cleaned and reused, be certain it:
-still fits the cavity in the air cleaner cover.
-is installed with the original side out.
FUEL FILTER
Level 1.
Tools required: Fuel line hook. 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: Fuel Filter P/N 13120519830
W ARNING DANGER
Fuel is VERY flammable. 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 filter from the
tank.
3 . Remove the filter from the line and install the new filter.
Page 17
SPARK PLUG
Level 1.
Tools required: 3/4 in. Spark Plug deep socket, Feeler gauge
(preferably a wire gauge),
Parts Required: Spark Plug , NGK BPM-8Y P/N 15901019830
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 145-155 kg/cm (125-135 in. lb.).
POWER BLOWER
OPERATOR'S MANUAL
0.65 mm
(0.026 in.)
17
COOLING SYSTEMS CLEANING
Level 2.
Tools required: 25 - 50 mm (1 - 2 in.) medium bristle paint brush, Cross
Head Screwdriver, 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 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 . Remove accumulated debris from intake grill between backpack
frame and blower housing.
Page 18
18
Cleaning Cylinder Fins
1 . Remove spark plug.
2 . Remove engine cover (four screws), pull cover away from engine.
3 . Loosely install spark plug to prevent debris from entering engine
during cleaning.
4 . Clean cylinder fins (A) to allow cooling air to pass freely.
EXHAUST SYSTEM
Spark Arrestor Screen
Level 2.
Tools required: Cross Head Screwdriver
Parts Required: Spark arrestor screen P/N A310000000
A
W ARNING DANGER
Do not perform maintenance on engine or muffler until engine and
muffler are completely cool, otherwise serious personal injury may
result.
IMPORTANT
Carbon deposits in muffler will cause a drop in engine output and
overheating. Spark arrestor screen must be checked periodically.
1 . Remove spark plug and engine cover (four screws).
2 . Remove spark arrestor cover (A) and spark arrestor screen (B) from
muffler. Replace screen if plugged with carbon deposits.
3. Install spark arrestor screen and cover.
4. Install spark plug and engine cover.
B
A
Page 19
Cylinder Exhaust Port
Level 3.
IMPORTANT
The cylinder exhaust port must be inspected and cleaned of excess
carbon every 3 months or 90 hours of operation in order to maintain
this engine within the emissions durability period. ECHO strongly
recommends that you return your unit to your ECHO dealer for this
important maintenance service.
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.
POWER BLOWER
OPERATOR'S MANUAL
19
High Altitude Adjustment
High altitude adjustment is not required for proper operation of this
engine.
Level 2.
Tools required: Screwdriver, tachometer (Echo P/N 99051130017)
Parts required: None.
NOTE
Do not adjust carburetor unless necessary. If you have difficultly,
see your ECHO dealer.
Before Adjustment
Check that:
• Air filter 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, operat-
ing 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
Page 8 "Specifications" of this manual. Turn idle screw (A)
clockwise to increase idle speed; counter clockwise to decrease idle
speed.
A
4. Use a tachometer to adjust idle speed to specifications found on
page 9.
Page 20
20
TROUBLESHOOTING
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W ARNING DANGER
Fuel vapors are extremely flammable and may cause fire and/or explosion. Never test for ignition spark near an open
spark plug opening, otherwise serious personal injury may result.
Page 21
POWER BLOWER
OPERATOR'S MANUAL
STORAGE
W ARNING DANGER
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.
21
W ARNING DANGER
Do not store in enclosure where fuel fumes may accumulate or reach an open flame or spark.
2. Place the stop switch in the "STOP" 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 screws and nuts.
6. Drain the fuel tank completely and pull the recoil
starter handle several times to remove fuel from the
carburetor.
7 . Remove the spark plug and pour 7cc (1/4 oz., 1/2
tablespoon) of fresh, clean ECHO 2-stroke engine oil
into the cylinder through the spark plug hole.
A. Place a clean cloth over the spark plug hole.
B . Pull the recoil starter handle 2-3 times to distrib-
ute the oil inside the engine.
C. Observe the piston location through the spark
plug hole. Pull the recoil handle slowly until the
piston reaches the top of its travel and leave it
there.
8. Install the spark plug (do not connect ignition cable).
9 . Remove blower pipe assembly from unit.
Page 22
22
NOTES
Page 23
NOTES
POWER BLOWER
OPERATOR'S MANUAL
23
Page 24
SERVICING INFORMA TION
PARTS
Genuine ECHO Parts and ECHO REPOWER™ Parts and Assemblies for
your ECHO products are available only from an Authorized ECHO
Dealer. When you do need to buy parts, always have the Model
Number and Serial Number of the unit with you. You can find these
numbers on the engine housing. For future reference, write them in the
space provided below.
Model No. _____________ SN. ____________
SERVICE
Service of this product during the warranty period must be performed
by an Authorized ECHO Service Dealer. For the name and address of
the Authorized ECHO Service Dealer nearest you, ask your retailer or
call: 1-800-432-ECHO (3246). Dealer information is also available on our
Web Site. When presenting your unit for Warranty service/repairs,
proof of purchase is required.
ECHO CONSUMER PRODUCT SUPPORT
If you require assistance or have questions concerning the application,
operation or maintenance of this product you may call the ECHO
Consumer Product Support Department at 1-800-673-1558 from 8:30 am
to 4:30 pm (Central Standard Time) Monday through Friday. Before
calling, please know the model and serial number of your unit to help
your Consumer Product Support Representative.
DEALER?
Call
1-800-432-ECHO
or
www.echo-usa.com
CONSUMER PRODUCT
SUPPORT
1-800-673-1558
8:30 - 4:30 Mon - Fri C.S.T.
W ARRANTY REGISTRATION
You may register your Echo equipment using the warranty registration
card or register on-line at www.echo-usa.com. Registering provides a
direct link between you and ECHO if we find it necessary to contact
you.
ADDITIONAL OR REPLACEMENT MANUALS
Safety Manuals in English/Spanish or English/French are available, free of charge, from your ECHO dealer or at
www.echo-usa.com.
Operator's and Parts Manuals are available by:
• Downloading free from www.echo-usa.com
• Purchasing from your Echo Dealer.
• Sending a check or money order for $2.00 per Parts Catalog or $1.50 per Operator's Manual made payable to ECHO,
INCORPORATED. State on a sheet of paper the model number and serial number of the ECHO unit you have, part
number of the manual (if known), your name and address and mail to address above.
Safety Videos are available from your Echo dealer. A $5.00 shipping charge will be required for each video.
Available Parts Catalog
PB-750 Serial Number 05001001 - 05999999 Part Number 99922203626
ECHO, INCORPORATED
400 OAKWOOD ROAD
LAKE ZURICH, IL 60047
www.echo-usa.com
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