Echo HCS-3020 User manual

X7702243800
© 3/2016 ECHO Inc.
Operator’s Manual
Specifications, descriptions and illustrative material in this literature are as
accurate as known at the time of publication, but are subject to change
without notice. Illustrations may include optional equipment and
accessories, and may not include all standard equipment.
x7722271404 / x772000164
HCS-3020/4020
HEDGE TRIMMER
Burn Hazard
The muffler or catalytic muffler and surrounding cover may
become extremely hot.
Always keep clear of exhaust and muffler area, otherwise
serious personal injury may occur.
The engine exhaust from this product contains chemicals known to the
State of California to cause cancer, birth defects or other reproductive
harm.

TABLE OF CONTENTS HCS-3020 4020
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Users of this equipment risk injury to themselves and others if
the unit is used improperly and/or safety precautions are not
followed. ECHO provides an operator’s manual and a safety
manual. Both must be read and understood for proper and safe
operation. Failure to do so could result in serious injury.
TABLE OF CONTENTS
Table of Contents .............................................................................................. 2
Introduction ....................................................................................................... 4
The Operator’s Manual .............................................................................. 4
The Safety Manual..................................................................................... 4
Servicing Information ........................................................................................ 4
Parts/Serial Number .................................................................................. 4
Service....................................................................................................... 4
Echo Consumer Product Support .............................................................. 5
Product Registration .................................................................................. 5
Additional or Replacement Manuals .......................................................... 5
Safety ................................................................................................................ 5
Manual Safety Symbols and Important Information................................... 5
International Symbols ................................................................................ 6
Personal Condition and Safety Equipment ................................................ 7
Equipment................................................................................................ 11
Emission Control (Exhaust & Evaporative) .................................................... 12
CARB And EPA Emissions Control Information....................................... 12
Description ...................................................................................................... 14
Contents.......................................................................................................... 16
Operation ........................................................................................................ 17
Fuel.......................................................................................................... 17
Starting Cold Engine................................................................................ 19
Starting Warm Engine.............................................................................. 21
Stopping Engine ...................................................................................... 22
Hedge Trimming....................................................................................... 22

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HCS-3020 4020 TABLE OF CONTENTS
Maintenance.................................................................................................... 23
Skill Levels ............................................................................................... 23
Maintenance Intervals .............................................................................. 24
Air Filter.................................................................................................... 25
Fuel Filter ................................................................................................. 25
Spark Plug................................................................................................ 26
Cooling System ........................................................................................ 26
Exhaust System ....................................................................................... 27
Carburetor Adjustment ............................................................................. 29
Lubrication................................................................................................ 30
Blades ...................................................................................................... 31
Troubleshooting ............................................................................................... 34
Storage............................................................................................................ 35
Long Term Storage (Over 30 Days) ......................................................... 35
Specifications .................................................................................................. 37
Notes ............................................................................................................... 39
Product Registration ........................................................................................ 40
Notes ............................................................................................................... 42

INTRODUCTION HCS-3020 4020
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INTRODUCTION
Welcome to the ECHO family. This ECHO product was designed and
manufactured to provide long life and on-the-job dependability. Read and
understand this manual and the SAFETY MANUAL. You will find both easy to
use and full of helpful operating tips and SAFETY messages.
The Operator’s Manual
Keep it in a safe place for future reference. Contains specifications and
information for safety, operation, maintenance, storage and assembly specific to
this product.
The Safety Manual
Keep it in a safe place for future reference. Explains possible hazards and the
measures you should take to insure safe operation.
SERVICING INFORMATION
Parts/Serial Number
Genuine ECHO Parts 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.

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HCS-3020 4020 SAFETY
Echo Consumer Product Support
If you require assistance or have questions concerning the application,
operation or maintenance of this product you may call the ECHO Consumer
Product Support Department at 1-800-673-1558 from 8:00 am to 5:00 pm
(Central Standard Time) Monday through Friday. Before calling, please know
the model and serial number of your unit.
Product Registration
To ensure trouble free warranty coverage it is important that you register your
ECHO equipment on-line at www.echo-usa.com or by filling out the product
registration sheet included in this manual. Registering your product confirms
your warranty coverage and provides a direct link between you and ECHO if we
find it necessary to contact you.
Additional or Replacement Manuals
Replacement Operator, Safety Manuals, and Parts
Catalogs are available from your ECHO dealer or at
www.echo-usa.com or by contacting ECHO Inc., 400
Oakwood Road, Lake Zurich, IL 60047 (800-673-1558).
Always check the ECHO Web Site for updated information.
Safety Videos are available from your Echo dealer. A $5.00 shipping charge
will be required for each video.
SAFETY
Manual Safety Symbols and Important Information
Throughout this manual and on the product itself, you will find safety alerts and
helpful, informational messages preceded by symbols or key words. The
following is an explanation of those symbols and key words and what they mean
to you.
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.

SAFETY HCS-3020 4020
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The safety alert symbol accompanied by the word “CAUTION” calls
attention to an act or condition which may lead to minor or
moderate personal injury if not avoided.
The enclosed message provides information necessary for the
protection of the unit.
Note: This enclosed message provides tips for use, care and
maintenance of the unit.
CIRCLE AND SLASH SYMBOL
This symbol means the specific action shown is prohibited.
Ignoring these prohibitions can result in serious or fatal injury.
International Symbols
Symbol Description Symbol Description
Warning, See
Operator’s Manual
Carburetor Adjustment -
High Speed Mixture
Wear Eye, Ear and
Head Protection
Carburetor Adjustment -
Idle Speed
Wear Hand
and Foot Protection
Carburetor Adjustment -
Low Speed Mixture
Safety/Alert Emergency Stop
Hot Surface Fuel and Oil Mixture
Finger Severing Do not operate without
guards in place.

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HCS-3020 4020 SAFETY
Personal Condition and Safety Equipment
Users of this product risk injury to themselves and others if the unit
is used improperly and/or safety precautions are not followed.
Proper clothing and safety gear must be worn when operating unit.
Avoid all power
lines. This unit is not
insulated against
electrical current.
Do not operate closer
than 15 M (50 ft.) from
electrical hazard.
DO NOT Allow Flames
or Sparks Near Fuel
Ignition
ON / OFF
DO NOT Smoke Near
Fuel Primer Bulb
Choke Control “RUN”
Position (Choke Open)
Choke Control “COLD
START” Position (Choke
Closed)
Plan retreat path
from falling objects
Wear slip resistant
footwear
Keep bystanders at least
4.5 meters (15 ft.) away.
Symbol Description Symbol Description

SAFETY HCS-3020 4020
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Physical Condition
Your judgment and physical dexterity may not be good:
• If you are tired or sick.
• If you are taking medication.
• If you have taken alcohol or drugs.
Operate unit only if you are physically and mentally well.
Eye Protection
◆Eye protection that meets ANSI Z87.1 or CE requirements
must be worn whenever you operate the unit.
◆For additional safety, a full-face shield may be worn over
safety glasses or goggles to provide protection from sharp
branches or flying debris.
Hand Protection
Wear sturdy, no-slip, rubber work gloves to improve your grip on the handles.
Gloves also provide protection against cuts and scratches, cold environments,
and reduce the transmission of machine vibration to your hands.
Hearing/Ear Protection
ECHO recommends wearing hearing protection whenever unit is used.
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.

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HCS-3020 4020 SAFETY
Wear sturdy work shoes with nonskid rubber soles:
• DO NOT WEAR OPEN TOED SHOES.
• DO NOT OPERATE UNIT BAREFOOTED.
Keep long hair away from engine and air intake. Retain hair with cap or net.
Heavy protective clothing can increase operator fatigue, which may lead to heat
stroke. Schedule heavy work for early morning or late afternoon hours when
temperatures are cooler.
The components of this machine generate an electromagnetic field
during operation, which may interfere with some pacemakers. To
reduce the risk of serious or fatal injury, persons with pacemakers
should consult with their physician and the pacemaker
manufacturer before operating this machine. In the absence of
such information, ECHO does not recommend the use of this
machine by anyone who has a pacemaker.
Extended Operation / Extreme Conditions
Prolonged exposure to cold and/or vibration may result in injury.
Read and follow all safety and operation instructions to minimize
risk of injury. Failure to follow instructions may result in painful
wrist/hand/arm injuries.
It is believed that a condition called Raynaud’s Phenomenon, which affects the
fingers of certain individuals, may be brought about by exposure to vibration
and cold. Exposure to vibration and cold may cause tingling and burning
sensations, followed by loss of color and numbness in the fingers. The following
precautions are strongly recommended, because the minimum exposure, which
might trigger the ailment, is unknown.

SAFETY HCS-3020 4020
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• 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.
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 exercise 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.

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HCS-3020 4020 SAFETY
All over head electrical conductors and communications wires can
have electricity flow with high voltages. This unit is not insulated
against electrical current. Never touch wires directly or indirectly,
otherwise serious injury or death may result.
Do not operate this product indoors or in inadequately ventilated
areas. Engine exhaust contains poisonous emissions and can
cause serious injury or death.
Read the Manuals
• Provide all users of this equipment with the Operator’s Manual and Safety
Manual for instructions on Safe Operation.
Clear the Work Area
• Spectators and fellow workers must be warned, and children and animals
prevented from coming nearer than 15 m (50 ft.) while the unit is in use.
Keep a Firm Grip
• Always hold throttle handle and support handle with thumbs and fingers
tightly encircling the handles.
Keep a Solid Stance
• Maintain footing and balance at all times.
Do not stand on slippery, uneven or
unstable surfaces. Do not work in odd
positions or on ladders. Do not over
reach.
Avoid Hot Surfaces
• Keep exhaust area clear of flammable debris. Avoid
contact during and immediately after operation.
Never perform blade maintenance procedures while engine is
running.

SAFETY HCS-3020 4020
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Equipment
Use only ECHO attachments. Serious injury may result from the
use of a non-approved attachment combination. ECHO, INC. will
not be responsible for the failure of cutting devices, attachments or
accessories which have not been tested and approved by ECHO.
Read and comply with all safety instructions listed in this manual
and safety manual.
• Check unit for loose/missing nuts, bolts, and screws. Tighten and/or replace
as needed.
• Check that the cutting attachment is firmly attached and in safe operating
condition. Dull, loose or damaged blades should not be used.
Moving parts can amputate fingers or cause severe injuries. Keep
hands, clothing and loose objects away from all openings.
◆ALWAYS stop engine, disconnect spark plug, and make sure
all moving parts have come to a complete stop before
removing obstructions, clearing debris, or servicing unit.
◆DO NOT start or operate unit unless all guards and protective
covers are properly assembled to unit.
◆NEVER reach into any opening while the engine is running.
Moving parts may not be visible through openings.
Periodically Check fuel system (fuel lines, vent, grommet,
fuel tank, and fuel cap) for leaks especially if the unit is
dropped. If damage or leaks are found, do not use unit,
otherwise serious personal injury or property damage may
occur. Have unit repaired by an authorized servicing dealer
before using..

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HCS-3020 4020 EMISSION CONTROL
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.
An Emission Control Label is located
on the engine. (This is an EXAMPLE
ONLY, information on label varies by
engine FAMILY).
Product Emission Durability
(Emission Compliance Period)
The 50 or 300 hour emission
compliance period is the time span selected by the manufacturer certifying the
engine emissions output meets applicable emissions regulations, provided that
approved maintenance procedures are followed as listed in the Maintenance
Section of this manual.

DESCRIPTION HCS-3020 4020
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DESCRIPTION
Locate the safety decal(s) on your unit. Make sure the decal(s) is legible and
that you understand and follow the instructions on it. If a decal cannot be read, a
new one can be ordered from your ECHO dealer. See PARTS ORDERING
instructions for specific information.
1
2
3
4
5
67
8
9
10
12
11
13
14
15
16
Support Handle Label
Hot Label
Deflector Shield Label

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HCS-3020 4020 DESCRIPTION
1. BLADES - Double reciprocating single side blades mounted to a blade
support bar.
2. SUPPORT HANDLE WITH GUARD - FOR RIGHT HAND - Rubber non-
slip grip, guard protects hand from the blades. Warning decals are located
on guard.
3. SPARK PLUG - Provides spark to ignite fuel mixture.
4. PURGE BULB - Pumping purge bulb before starting engine draws fresh
fuel from the fuel tank, purging air from the carburetor. Pump purge bulb
until fuel is visible and flows freely in the clear fuel tank return line. Pump
purge bulb an additional 4 or 5 times.
5. CHOKE - The choke control lever is located on the front of the air cleaner
case. Move choke lever to “COLD START” ( ) to close the choke for
Cold Starting. Move choke lever to “RUN” ( ) position to open choke.
6. AIR CLEANER - Contains replaceable filter element.
7. FUEL TANK CAP - Covers and seals fuel tank opening.
8. FUEL TANK - Contains fuel and fuel filter.
9. THROTTLE HANDLE - FOR LEFT HAND - Contains the Stop Switch,
Throttle Lockout, and Throttle Trigger.
10. THROTTLE TRIGGER - Spring loaded to return to idle when released.
Trigger Lockout must be depressed fully before Throttle Trigger will move.
During acceleration, depress gradually for best operating technique.
11. STOP SWITCH - “TOGGLE SWITCH” located on throttle handle. Move
switch UP to RUN, DOWN to STOP.
12. THROTTLE TRIGGER LOCKOUT - This lever must be depressed before
Throttle Trigger can be activated.
13. SPARK ARRESTOR MUFFLER OR SPARK ARRESTOR MUFFLER
WITH CATALYST -The 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.
14. RECOIL STARTER HANDLE - Pull handle slowly until recoil starter
engages, then quickly and firmly. DO NOT pull rope all the way out or allow
the handle to snap back, damage to the starter will occur.
15. BLADE GUARD- Reduces risk of contact with blades and helps guide
material into cutters.
16. DEFLECTOR SHIELD- Sweeps away trimmings as hedge trimmer cuts.

CONTENTS HCS-3020 4020
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CONTENTS
The ECHO product you purchased has been factory pre-assembled for your
convenience. Due to packaging restrictions, some assembly may be necessary.
After opening the carton, check for damage. Immediately notify your retailer or
ECHO Dealer of damaged or missing parts. Use the contents list to check for
missing parts.
____ 1 - Hedge Trimmer Assembly
____ 1 - Operator’s Manual
____ 1 -Warranty Statement
____ 1 - Safety Manual
____ 1 - Blade Cover
Specifications,descriptions and illustrative materialin this literatureareas accurateas knownat the time
of publicatio n, but are subject to change w ithout notice. Illustrations mayinclude optional equipmentand
accessories, and may not include allstandard equipment.
Operator’s Manual
X7722271404/ X772000164
©4/2011 ECHO Inc.
X7722271404 / X772000164
HC-235
Hedge Clipper
Burn Hazard
The muffler or catalyticmuffler andsurroundingcovermay becomeextremelyhot.
Always kee p cl ear o f exh aust a nd muf fler area, otherwise serious personal injury may occur.
The engine exhaust from this product containschemicalsknownto the Stateof Californiato causecancer.
birth defects or other reproductiveharm.
Read r ules for safe op eration and inst ructions c arefully. ECHO provides an Operator’s Manual
and a Safety Manual.Both must be read and understood for proper and safe operation.

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HCS-3020 4020 OPERATION
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.
Operation of this equipment may create sparks that can start fires
around dry vegitation.This unit is equipped with a spark arrestor to
prevent discharge of hot particles from the engine. Metal cutters
can also create sparks if the cutter strikes rocks, metal, or other
hard objects. Contact local fire authorities for laws or regulations
regarding fire prevention requirements.
Fuel
Diesel fuels and alternative fuels, such as E-15 (15% ethanol), E-85
(85% ethanol) or any fuels not meeting ECHO requirements are
NOT approved for use in ECHO 2-stroke gasoline engines. Use of
diesel or alternative fuels may cause performance problems, loss
of power, overheating, fuel vapor lock, and unintended machine
operation, including, but not limited to, improper clutch
engagement. Diesel or alternative fuels may also cause premature
deterioration of fuel lines, gaskets, carburetors and other engine
components.
Fuel Requirements
Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be
good quality. Gasoline may contain up to 10% Ethanol (grain alcohol) or 15%
MTBE (methyl tertiary-butyl ether). Gasoline containing methanol (wood
alcohol) is NOT approved. ECHO brand Power Fuel™is 93 octane, ethanol-free
fuel premixed with ECHO Red Armor®engine oil at 50:1 ratio. Use of ECHO
Power Fuel™is recommended to extend engine life in all air-cooled 2-stroke
and 2/4-stroke hybrid engines.

OPERATION HCS-3020 4020
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Two Stroke Oil - A two-stroke engine oil meeting ISO-L-EGD (ISO/CD 13738)
and J.A.S.O. FD Standards must be used. Echo brand premium Power Blend
X™Universal 2-Stroke Oil meets these standards. Engine problems due to
inadequate lubrication caused by failure to use an ISO-L-EGD (ISO/CD 13738)
and J.A.S.O. M345-FD certified oil, such as Echo premium Power Blend X™,
will void the two-stroke engine warranty.
Echo premium Power Blend X™Universal 2-Stroke Oil may be mixed at
50:1 ratio for application in all Echo engines sold in the past regardless
of ratio specified in those manuals.
Handling Fuel
Fuel is VERY flammable. Use extreme care when mixing, storing or
handling, or serious personal injury may result.
◆Use an approved fuel container.
◆DO NOT smoke near fuel.
◆DO NOT allow flames or sparks near fuel.
◆Fuel tanks/cans may be under pressure. Always loosen fuel
caps slowly allowing pressure to equalize.
◆NEVER refuel a unit when the engine is HOT or RUNNING!
◆DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks
outdoors over bare ground.
◆DO NOT overfill fuel tank. Wipe up spills immediately.
◆Securely tighten fuel tank cap and close fuel container after
refueling.
◆Inspect for fuel leakage. If fuel leakage is found, do not start or
operate unit until leakage is repaired.
◆Move at least 3 m (10 ft.) from refueling location before
starting the engine.
Mixing Instructions
1. Fill an approved fuel container
with half of the required amount of
gasoline.
2. Add the proper amount of 2-stroke
oil to gasoline.
3. Close container and shake to mix
oil with gasoline.
4. Add remaining gasoline, close fuel
container, and remix.
Fuel to Oil Mix – 50:1 Ratio
US Metric
Gas Oil Gas Oil
Gallons Oz. Liter CC.
12.65100
25.210200
51325500

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HCS-3020 4020 OPERATION
Spilled fuel is a leading cause of hydrocarbon
emissions. Some states may require the use of
automatic fuel shut-off containers to reduce fuel
spillage.
After use
• DO NOT store a unit with fuel in its tank. Leaks can occur.
Return unused fuel to an approved fuel storage container.
Storage - Fuel storage laws vary by locality. Contact your local government for
the laws affecting your area. As a precaution, store fuel in an approved, airtight
container. Store in a well-ventilated, unoccupied building, away from sparks and
flames.
Stored fuel ages. Do not mix more fuel than you expect to use in thirty
(30) days, ninety (90) days when a fuel stabilizer is added.
Stored two-stroke fuel may separate. ALWAYS shake fuel container
thoroughly before each use.
Starting Cold Engine
Hedge Trimmer blades are very
sharp. Touching them may lead
to severe personal injury. Avoid
touching blades whenever
possible, and always wear
gloves to protect hands.
Note: The blade cover is used for
transportation and storage.
Remove blade cover before
using the unit.
1. Stop Switch
A

OPERATION HCS-3020 4020
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Move stop switch (A) away from the
STOP position.
2. Choke
Move choke (B) to COLD START
( ) (CLOSED) position.
3. Purge Bulb
Pump purge bulb (C) until fuel is
visible and flows freely in the clear
fuel tank return line. Pump bulb an
additional 4 or 5 times.
4. Recoil Starter
Lay the unit on a flat, clear area.
Grip the support handle securely
with right hand, and pull the recoil
starter handle (D) with left hand until
engine fires (or 5 pulls maximum).
5. Choke
After engine fires (or 5 pulls), move
choke (B) to the RUN ( )
(OPEN) position. Restart engine if
necessary and allow unit to warm
up at idle for several minutes.
Note: If engine does not start with
choke in “RUN” position after
5 pulls, repeat instructions 2
- 5.
The blades must not move at idle, otherwise serious personal
injury may result. Periodic carburetor adjustment may be
necessary to assure blades do not move at idle. If blades move,
readjust carburetor according to “Carburetor Adjustment”
instructions in this manual or see your Dealer.
6. Throttle Trigger
C
B
D
D