Shindaiwa EB633RT User manual

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© 04/22 ECHO Incorporated
Operator’s
Manual
EB633RT
Power Blower
The engine exhaust from this product contains chemicals
known to the State of California to cause cancer, birth defects,
or other reproductive harm.
Read and understand all provided literature before
use. Failure to do so could result in serious injury.
Note: This product complies with CAN ICES-2/NMB-2.

TABLE OF CONTENTS EB633RT
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TABLE OF CONTENTS
Introduction ................................................................................................. 3
Servicing Information .................................................................................. 3
Parts and Serial Number...................................................................... 3
Service................................................................................................. 4
Consumer Product Support ................................................................. 4
Product Registration ............................................................................ 4
Additional Literature............................................................................. 4
Safety.......................................................................................................... 5
Manual Safety Symbols and Important Information............................. 5
International Symbols .......................................................................... 6
Personal Condition and Safety Equipment .......................................... 8
Equipment.......................................................................................... 12
Emission Control (Exhaust & Evaporative) .............................................. 14
CARB and EPA Emissions Control Information ................................. 14
Description ................................................................................................ 15
Contents.................................................................................................... 16
Assembly................................................................................................... 17
Install Blower Pipes ........................................................................... 17
Operation .................................................................................................. 18
Fuel.................................................................................................... 19
Starting Cold Engine.......................................................................... 22
Starting Warm Engine........................................................................ 23
Stopping Engine ................................................................................ 24
Operating Blower ............................................................................... 24
Maintenance ............................................................................................. 26
Skill Levels ......................................................................................... 26
Maintenance Intervals........................................................................ 27
Air Filter ............................................................................................. 28
Fuel Filter........................................................................................... 28
Spark Plug ......................................................................................... 29
Cooling System.................................................................................. 30
Exhaust System................................................................................. 31
Carburetor Adjustment....................................................................... 32
Troubleshooting ........................................................................................ 34
Storage ..................................................................................................... 35
Long Term Storage (Over 30 Days)................................................... 35
Specifications............................................................................................ 36
Product Registration.................................................................................. 38

EB633RT INTRODUCTION
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INTRODUCTION
Specifications, descriptions, and illustrative material in this literature are as
accurate as possible. Specifications are subject to change without notice.
Illustrations might include optional equipment and accessories, and might
not include all standard equipment. Your equipment might appear slightly
different than pictured equipment.
Read and understand all provided literature.
Literature contains specifications and
information for safety, operation,
maintenance, storage, and assembly
specific to this product. Scan QR codes for
more information.
For additional literature, including safety manuals where applicable, or
questions regarding terms used in this manual, visit:
https://www.echo-usa.com/manuals
OR
https://www.shindaiwa-usa.com/manuals
SERVICING INFORMATION
Parts and Serial Number
Genuine Shindaiwa Parts and
Assemblies for your Shindaiwa
products are available only from an
Authorized Shindaiwa 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. _____________________

SERVICING INFORMATION EB633RT
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Service
Service of this product during the warranty period must be performed by an
Authorized Shindaiwa Service Dealer. For the name and address of the
Authorized Shindaiwa Service Dealer nearest you, ask your retailer or call:
1-877-986-7783. Dealer information is also available on www.shindaiwa-
usa.com. When presenting your unit for Warranty service/repairs, proof of
purchase is required.
Consumer Product Support
If you require assistance or have questions concerning the application,
operation or maintenance of this product you may call the Shindaiwa
Consumer Product Support Department at 1-877-986-7783 from 8:00 am to
5:00 pm (Central Standard Time) Monday through Friday. Before calling,
please know the model and serial number of your unit.
Product Registration
To ensure trouble free warranty coverage it is important that you register
your Shindaiwa equipment on-line at www.shindaiwa-usa.com or by filling
out the product registration sheet included in this manual. Registering your
product confirms your warranty coverage and provides a direct link between
you and ECHO if we find it necessary to contact you.
Additional Literature
In addition to finding information online, information is available from your
Authorized Shindaiwa Service Dealer, or by contacting ECHO Incorporated,
400 Oakwood Road, Lake Zurich, IL 60047, 1-800-432-ECHO (3246).

EB633RT SAFETY
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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.
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 might 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.

SAFETY EB633RT
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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 Stop Switch
Hot Surface Fuel and Oil
Mixture
Idle Speed Fast Speed
Finger Severing Purge Bulb
DO NOT Allow
Flames or Sparks
Near Fuel
Ignition
ON / OFF
DO NOT Smoke
Near Fuel
Choke Control
“COLD START”
Position (Choke
Closed)
H
T
L
STOP
Ignition
OFF
ON

EB633RT SAFETY
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Note: Not all symbols will appear on your unit.
Choke Control
“RUN” Position
(Choke Open)
Wear Slip
Resistant
Footwear
Beware of Thrown Objects
Keep Bystanders and Helpers
Away 15 m (50 ft.).
Symbol Description Symbol Description

SAFETY EB633RT
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Personal Condition and Safety Equipment
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
The muffler or catalytic muffler and surrounding cover
may become extremely hot. Always keep clear of
exhaust and muffler area, otherwise serious personal
injury might occur.
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 can be worn over
safety glasses or goggles to provide protection from sharp
branches or flying debris.

EB633RT SAFETY
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Hand Protection
Wear sturdy, no-slip, rubber work gloves to improve your grip on the
handles. Gloves also provide protection against cuts and scratches, cold
environments, and reduce the transmission of machine vibration to your
hands.
Hearing and Ear Protection
ECHO recommends wearing personal protective equipment whenever unit
is used.
Breathing Protection
Operators who are sensitive to dust or other common airborne allergens
may need to wear a dust mask to prevent inhaling these materials while
operating unit. Dust masks can provide protection against dust, plant debris,
and other plant matter such as pollen. Make sure the mask does not impair
your vision, and replace the mask as needed to prevent air restrictions.
Proper Clothing
Wear snug-fitting, durable clothing:
• Pants should have long legs, shirts should have long sleeves.
• DO NOT WEAR SHORTS.
• DO NOT WEAR TIES, SCARVES, JEWELRY, or clothing with loose or
hanging items that could become entangled in moving parts or
surrounding growth.
• Keep clothing buttoned or zipped, and keep shirt tails tucked in.
• Wear sturdy work shoes with nonskid rubber soles.
• DO NOT WEAR OPEN TOED SHOES.
• DO NOT OPERATE UNIT WITH BARE FEET.
Keep long hair away from engine and air intake. Retain hair with cap or net.
Heavy protective clothing can increase operator fatigue, which may lead to
heat stroke. Schedule heavy work for early morning or late afternoon hours
when temperatures are cooler.

SAFETY EB633RT
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The components of this machine generate an electromagnetic
field during operation, which can interfere with some
pacemakers. To reduce the risk of serious or fatal injury,
persons with pacemakers should consult with their physician
and the pacemaker manufacturer before operating this
machine. In the absence of such information, ECHO does not
recommend the use of this machine by anyone who has a
pacemaker.
Extended Operation and Extreme Conditions
Prolonged exposure to cold and/or vibration can result in injury.
Read and follow all safety and operation instructions to
minimize risk of injury. Failure to follow instructions can 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.

EB633RT SAFETY
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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 can result.
Do not operate this product indoors or in inadequately
ventilated areas. Engine exhaust contains poisonous emissions
and can cause serious injury or death.

SAFETY EB633RT
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Read the Manual
• Provide all users of this equipment with literature for instructions 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
operation.
Equipment
Use only approved attachments. Serious injury can result from
the use of a non-approved attachment combination. ECHO
Incorporated 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.
◆Do not attempt to modify this product. Serious injury can
result from the use of any modified product.

EB633RT SAFETY
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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 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 might not be visible through openings.
Periodically check fuel system (fuel lines, vent, grommet, fuel
tank, and fuel cap) for leaks especially if the unit is dropped. If
damage or leaks are found, do not use unit, otherwise serious
personal injury or property damage may occur. Have unit
repaired by an authorized servicing dealer before using.

EMISSION CONTROL EB633RT
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EMISSION CONTROL (EXHAUST &
EVAPORATIVE)
CARB and EPA Emissions Control Information
The emission control system for
the engine is EM (engine
modification) and, if the second to
last character of the Engine Family
on the Emission Control
Information label (sample below) is
“B”, “C”, “K”, or “T”, the emission
control system is EM and TWC
(3-way catalyst). The fuel tank/fuel
line emission control system is EVAP (evaporative emissions). Evaporative
emissions for California models are only applicable to fuel tanks and fuel
feed lines.
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.

EB633RT DESCRIPTION
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DESCRIPTION
Locate the safety decal(s) on your unit. Make sure the decal(s) is legible
and that you understand and follow the instructions on it. If a decal cannot
be read, a new one can be ordered from your Shindaiwa dealer. The
safety decal is for example only. Your label may appear slightly different.
2
4
13
14
3
5
6
1
9
8
12
11
10
7

CONTENTS EB633RT
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CONTENTS
After opening the carton, check for damage. Immediately notify your retailer
or Shindaiwa Dealer of damaged or missing parts. Use the contents list to
check for missing parts.
1. Air Cleaner
2. Spark Plug
3. Recoil Starter Handle
4. Spark Arrester Muffler or Spark Arrester Muffler with Catalyst
5. Fuel Tank
6. Fuel Tank Cap
7. Shoulder Harness
8. Blower Pipes
9. Throttle Trigger
10. Throttle Position Lever
11. Stop Switch
12. Throttle Handle
13. Choke
14 Purge Bulb
1 Power Head
1Flex Pipe
1 Pipe with Swivel
1 Straight Pipe
1 Straight Pipe
1 Operator’s Manual
2 Clamps with Screws

EB633RT ASSEMBLY
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ASSEMBLY
Never perform maintenance or assembly procedures with
engine running or serious personal injury may result.
Install Blower Pipes
1. Assemble clamps (A) and (G)
onto both ends of flexible pipe
(B).
Note: Clamp with cable guide
loop (G) fits elbow end of
flexible pipe.
Note: A light lubricant may be
used to ease assembly of
flexible pipe to blower
elbow.
2. Assemble flexible pipe to elbow
(D) on blower. Position clamp
with cable guide loop (G) on
outside of flexible pipe and
tighten clamp.
Note: Hang handle freely from
blower to assure throttle
cable is not twisted
before installing handle
(E).
3. Position throttle cable
along the outside of
elbow. Loosen knob
(H) on handle (E).
Align notches in
handle with tabs (F)
and install onto swivel
pipe (C) past long
ridges in pipe.
4. Assemble swivel pipe
into flexible pipe and
tighten clamp (A).
5. Clip throttle cable into throttle cable guide loop.
6. Move handle (E) to desired position. Tighten knob (H) hand tight.
G
G
A
B
G
D
D
G
B
H
A
CF
E

OPERATION EB633RT
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7. Assemble straight pipe (K) onto
swivel pipe, until you feel light
resistance. Do not force
connection. Hold swivel pipe
and turn straight pipe
clockwise, engaging positive
locking channels, until
connection is firm. Do not force
connection.
8. Assemble straight pipe with
decal (J) to straight pipe as in
step 7.
Note: Blower use will eventually loosen pipe connections. Exclusive
positive locking system allows pipes to be tightened. If
loosening occurs, remove two straight pipes and install
according to instructions 7 & 8.
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
might 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.
Operation of this equipment might 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.
E
C
KJ

EB633RT OPERATION
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Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a
poison gas. Breathing CO can cause unconsciousness, serious
injury, or death. Exhaust can cause serious burns. ALWAYS
position unit so that exhaust is directed away from your face
and body.
◆This blower should be used for clearing leaves, grass,
debris, and dust in yards, gardens, driveways, and parking
lots only.
◆Always maintain a direct, clear line of site to the unit and
the work being performed.
◆Always be alert for changes in operation of unit.
◆Always shut engine off before transporting unit to new
location.
◆Always secure the unit during transportation to prevent
turnover, fuel spillage, and damage to the unit.
Fuel
Diesel fuels and alternative fuels, such as E15 (15% ethanol),
E85 (85% ethanol) or any fuels not meeting Shindaiwa
requirements are NOT approved for use in Shindaiwa 2-stroke
or Hybrid 4-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.

OPERATION EB633RT
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Fuel Requirements
Gasoline - Use fresh (purchased within the last 30 days from the pump) 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. Use of ECHO branded fuel is recommended to extend
engine life in all air-cooled 2-stroke and 2/4-stroke hybrid engines.
Two Stroke Oil - A 2-stroke engine oil, such as Shindaiwa branded 2-stroke
oils, meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FD Standards must
be used. Shindaiwa branded 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 will void the 2-
stroke engine warranty.
2-Stroke engine oil contains petroleum distillates and other
additives that may be harmful if swallowed. Heated oil can
release vapors that can cause flash fire, or ignite with explosive
force. Read and follow the oil manufacturer’s instructions, and
observe all safety warnings and precautions for handling
flammable liquids. For more detailed safety and first aid
information, visit www.echo-usa.com for a copy of the Material
Safety Data Sheet.
◆KEEP OUT OF REACH OF CHILDREN.
◆If swallowed, do not induce vomiting. CALL PHYSICIAN OR
A POISON CONTROL CENTER IMMEDIATELY.
◆WEAR SAFETY GLASSES when mixing or handling.
◆AVOID repeated or prolonged skin contact.
◆AVOID inhaling oil mists or vapors.
Shindaiwa branded 2-stroke oils may be mixed at 50:1 ratio for
application in all Shindaiwa engines sold in the past, regardless of
ratio specified in those manuals.