Echo GT-230 User manual

Grass Trimmer
Operator'sManual
MODELS GT-230
WARNING DANGER
Readrulesforsafeoperationandinstructionscarefully. ECHOprovidesan
Operator'sManualandaSafetyManual. Bothmustbereadandunderstoodfor
properandsafeoperation.
X7502098202 X750003412
11/05

2
Copyright©2005ByEcho,Incorporated
All Rights Reserved.
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 found in the same package. You will
find both easy to use and full of helpful operations tips and SAFETY messages.
THE OPERATOR'SMANUAL
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.
THE SAFETY MANUAL
Read and understand this manual before operation. Keep it in a safe
place for future reference. It explains possible hazards involved with the
use of Grass Trimmers and Brush cutters and what measures you
should take to make their use safer.
TABLE OF CONTENTS
Introduction .................................................................... 2
- The Operator's Manual ............................................ 2
- The Safety Manual .................................................. 2
Safety .............................................................................. 3
- Manual Safety Symbols and Important Information... 3
- InternationalSymbols .............................................. 3
- Personal Conditions and Safety Equipment ............ 3
- Equipment ................................................................ 6
EmissionControl............................................................. 6
Description ..................................................................... 7
Contents ......................................................................... 9
Assembly ........................................................................ 9
- PlasticShield............................................................ 9
- Nylon Head.............................................................. 9
- Front(Loop)Handle .............................................. 10
Operation ...................................................................... 11
- Fuel ........................................................................ 11
- StartingColdEngine .............................................. 12
- StartingWarmEngine............................................ 13
- Stopping Engine .................................................... 13
Maintenance ................................................................. 14
- SkillLevels ............................................................. 14
- Maintenance Intervals ........................................... 14
- AirFilter ................................................................. 15
- FuelFilter ............................................................... 15
- SparkPlug .............................................................. 16
- CoolingSystem...................................................... 16
- ExhaustSystem...................................................... 17
- Carburetor Adjustment .......................................... 18
- Lubrication............................................................. 19
- NylonLineReplacement ........................................ 19
Troubleshooting ........................................................... 21
Storage.......................................................................... 22
Specifications................................................................ 23
ServicingInformation.................................................... 24
- Parts....................................................................... 24
- Service ................................................................... 24
- ECHOConsumerProductSupport......................... 24
- Warranty Card ....................................................... 24
- Additional or Replacement Manuals ..................... 24
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.

GRASS TRIMMER
OPERATOR'SMANUAL 3
SAFETY
MANUAL SAFETY SYMBOLS AND IMPORTANT INFORMATION
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 Theenclosedmessage
provides information necessary for the
protection of the unit.
NOTE This enclosed message provides tips
for use, care and maintenance of the unit.
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 circle with the slash symbol means whatever is
shown within the circle is prohibited.
INTERNATIONALSYMBOLS
BEWARE
- THROWN,
RICOCHET
OBJECTS
WEAR HAND AND
FOOTPROTECTION
HOT
SURFACE
SYMBOL
DESCRIPTION/APPLICATION SYMBOL FORM/
SHAPE SYMBOL
DESCRIPTION/APPLICATION
SYMBOL FORM/
SHAPE
Read and understand
Operator's Manual.
WEAR EYES, EARS
AND HEAD
PROTECTION
FUEL AND OIL
MIXTURE
FINGER SEVERING
SAFETY/ALERT
DO NOT SMOKE
NEARFUEL.
WEAR SLIP
RESISTANT
FOOT WEAR.
DO NOT EXCEED
10,000 RPM.
SYMBOL
DESCRIPTION/APPLICATION SYMBOL FORM/
SHAPE SYMBOL
DESCRIPTION/APPLICATION
SYMBOL FORM/
SHAPE
CARBURETOR
ADJUSTMENT
- IDLE SPEED
CARBURETOR
ADJUSTMENT
- HIGH SPEED
MIXTURE
EMERGENCY STOP
CARBURETOR
ADJUSTMENT
- LOW SPEED MIXTURE
DO NOT ALLOW
FLAMESOR
SPARKSNEAR
FUEL.
IGNITION
ON/OFF
PRIMER
BULB
KEEP BYSTANDERS AND HELPERS
AWAY 15 M (50 FT.).
CHOKE CONTROL
"COLD START"
POSITION
(CHOKE CLOSED)
CHOKE CONTROL
"RUN"
POSITION
(CHOKEOPEN)
DO NOT USE
BLADES. STRING
LINE ONLY
BEWARE
- THROWN,
RICOCHET
OBJECTS
PERSONAL CONDITION AND SAFETY EQUIPMENT
WARNING DANGER
Trimmer/Brush Cutter users risk injury to themselves and others if the trimmer/brush cutter is used improperly and or
safety precautions are not followed. Proper clothing and safety gear must be worn when operating a trimmer.

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 handles. Gloves also reduce the transmission of
machine vibration to your hands.
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.
• DONOTWEARSHORTS,
• DONOTWEARTIES,SCARFS,JEWELRY.
Wear protective hair covering to contain long hair.
Wear sturdy work shoes with nonskid soles;
• DONOTWEAROPENTOEDSHOES,
• DONOTOPERATEUNITBAREFOOTED.
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 fingers of certain individuals, may be
brought about by exposure to vibration and cold. Exposure to vibration and cold may cause tingling and burning sensa-
tions, followed by loss of color and numbness in the fingers. The following precautions are strongly recommended,
becausethe minimum exposure which mighttriggerthe ailment is unknown.
• Keep your body warm, especially the head, neck, feet,
ankles, hands, and wrists.
• Maintain good blood circulation by performing vigor-
ous 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.

GRASS TRIMMER
OPERATOR'SMANUAL 5
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
riskfordeveloping aRepetitiveStressInjury(RSI). AnextremeRSIcondition is CarpalTunnelSyndrome(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 move-
ment.
• 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.
WARNING DANGER
Do not operate this product indoors or in inadequately ventilated
areas. Engine exhaust contains poisonous emissions and can
cause serious injury or death.
ReadtheManuals
• Provide all users of this equipment with the Operator’s Manual and
Safety Manual for instructions on Safe Operation.
CleartheWorkArea
• Spectators and fellow workers must be warned, and children and
animalspreventedfromcomingnearerthan15m(50ft.)whiletheunit
is in use.
KeepaFirmGrip
• Hold the front and rear handles with both hands, with thumbs and
fingers encircling the handles.
KeepaSolidStance
• 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.
AvoidHotSurfaces
• Keep exhaust area clear of flammable debris. Avoid contact during
andimmediatelyafteroperation.

6
EMISSION CONTROL
EPA Phase 2
The emission control system for this engine is EM (Engine Modification).
EmissionControlLabellocatedonEngine(EXAMPLEONLY,informationonlabelvariesbyFAMILY).
IMPORTANTENGINEINFORMATION
ENGINEFAMILY: 5EHXS.0234EA DISPLACEMENT: 22.8CC
EMISSIONCOMPLIANCE PERIOD: 300 HRS.
THISENGINEMEETSU.S.EPAPHASE2EMISSIONREGULA-
TIONS FOR SMALL NONROAD ENGINES. REFER TO
OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS
AND ADJUSTMENTS.
PRODUCT EMISSION DURABILITY
The 300 hour emission durability 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.
EQUIPMENT
WARNING DANGER
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.
• Inspect fuel lines, tank and area around carburetor for fuel leaks.
DO NOT operate unit if leaks are found.
• Inspect shield for damage and ensure that the cut-off knife issecurely
in place. Replace if either is damaged or missing.
• Check that the cutting attachment is firmly attached and in safe
operating condition.
• Check that front (loop) handle and optional shoulder/waist harness
are adjusted for safe, comfortable operation. See Assembly for proper
adjustment.
• Have repairs done only by an authorized ECHO Service Dealer.

GRASS TRIMMER
OPERATOR'SMANUAL 7
10
1
2
3
4
5
89
6
7
14
11
12
13
15
16
17
18
19
DESCRIPTION
Locate these safety decals on your unit. 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 ORDER-
INGinstructionsforspecificinformation.
P/N 89016006361
Hot Decal (near muffler)
P/N 89031744530
P/N 89022809560
Shaft Decal
P/N X505001930

8
1. POWERHEAD- Factory Assembled to the Drive Shaft assembly. Includes the Engine, Clutch, Fuel System, Ignition
SystemandRecoil Starter.
2. GRIP-Rear(righthand)handle.
3. STOPSWITCH - "SLIDE SWITCH" mounted on top of the Throttle Trigger Housing.. Move switch FORWARD to
RUN,BACKtoSTOP.
4. FRONT HANDLE - The Front (loop) handle is factory assembled to the Drive Shaft assembly but must be reposi-
tioned for proper cutting attitude and operator comfort.
5. DRIVESHAFTASSEMBLY-FactoryAssembledtothe PowerHead. IncludestheRear(right hand)Handle
Assembly, Bearing Housing Assembly, Throttle Trigger, Front (loop, left hand) Handle Assembly, Flexible Drive
Cable and Safety Decals.
6. NYLONCUTTERHEAD-Containsreplaceablenylontrimminglinethatadvanceswhenthetrimmerheadistapped
against the ground while the head is turning at normal operating speed.
7. CUT-OFFKNIFE-Trimslinetothecorrectlength(5in.).Iftrimmerisoperatedwithoutacut-offknifethelinewill
become too long - more than (5 in.) - the operating speed will slow, the engine overheat and performance will suffer.
8. DEBRISSHIELDASSEMBLY-Includedin plasticbag(co-pack). MUSTbeinstalled onunitbefore use,see
Assembly Instructions. Shield assembly includes the Cut-Off Knife and Safety Decal. Mounts on the Bearing
Housing Assembly just above the cutting attachment. Helps protect the operator by deflecting debris produced
duringthe trimmingoperation.
9. THROTTLETRIGGER-Springloadedtoreturntoidlewhenreleased. Duringacceleration,presstriggergradually
for best operating technique.
10. SHOULDERHARNESS-Optional (P/N99944200201). Anadjustablestrapthatsuspendsthe unitfromtheoperator.
11. TOPGUARD- Protects operator's arm from the hot engineduring normal operation.
12. SPARKARRESTOR-CATALYTICMUFFLER/MUFFLER-Themufflerorcatalyticmufflercontrolsexhaustnoise
and emission. The spark arrestor screen prevents hot, glowing particles of carbon from leaving the muffler. Keep
exhaustareaclearofflammabledebris.
13. FUELTANK-Containsfuelandfuelfilter.
14. RECOILSTARTERHANDLE-Pullhandleslowlyuntilrecoilstarterengages,thenquicklyandfirmly. Whenengine
starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.
15. FUELTANKCAP-Coverandsealsfueltankopening.
16. PURGEBULB-Pumping purge bulbbefore startingenginedrawsfreshfuel from the fuel tank,purgingairfromthe
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.
17. AIRCLEANER-Containsreplaceablefilterelement.
18. CHOKE - Located at the rear of the air cleaner housing. Move choke lever to "Cold Start" ( ) to close choke for
cold starting. Move choke lever to "Run" ( ) position to open choke.
19. SPARKPLUG-Providessparktoignitefuelmixture.

GRASS TRIMMER
OPERATOR'SMANUAL 9
CONTENTS
The ECHO product you purchased has been factory pre-assembled for your convenience. Due to packaging restrictions,
shield installation and positioning of the front handle are 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- TrimmerAssembly
___ 1 - PowerHead
___ 1- Drive Shaft Assembly
___ 1- PlasticBag(Co-Pack)
___ 1- Operator's Manual
___ 1- Safety Manual
___ 1- Shield Assembly
___ 1 - LockingTool
___ 1- HardwareBag
___ - 1,1/4-20bolt
___ - 1,1/4-20wingnut
___ - 1,1/4-20flatwasher
___ 1- WarrantyCard &LimitedWarranty
___ 1- Safety Glasses
___ 1- EchoPowerBlendTM 2-strokeoil sample
ASSEMBLY
Tools Required: Lockingtool
PLASTICSHIELD
1. Removewingnut (C), washer (B), and bolt (A).
2. Snap the shield over the bearing housing.
3. Install bolt (A), washer (B) and wing nut (C).
NYLON LINE HEAD
1. Remove plastic sleeve from threaded shaft.
2. Align locating hole in locating plate with hole in bearing housing.
3. Insert 1/8" dia. locking tool (D) and thread cutting attachment onto
shaft clockwise until head is tight.
IMPORTANT
Rememberto removethelockingtool.
A
B
C
D

10
E
F
MIN
SPACING
FRONT (LOOP) HANDLE
NOTE
Label shows minimum spacing for front handle location.
NOTE
Front handle is pre-installed. Repositioning and tightening is all
that is required.
1. Position front handle (E) in comfortable operating position and
tighten wing nut (F). The cutting attachment should be 5 - 7.5cm
(2 - 3 in.) above the ground and as level as possible.

GRASS TRIMMER
OPERATOR'SMANUAL 11
oitaR1:05-xiMliOotleuF
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SAGLIOSAGLIO
snollaG.zo.lFretiL.cc
1
2
5
6.2
2.5
31
4
8
02
08
061
004
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 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.
IMPORTANT
Storedfuelages.Donotmixmorefuel
than you expect to use in thirty (30)
days, ninety (90) days when a fuel
stabilizerisadded.
IMPORTANT
Stored two-stroke fuel may separate.
ALWAYS shake fuel container
thoroughly before each use.
OPERATION
FUEL
Fuel Requirements
Gasoline-Use89 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.
TwoStrokeOil-Atwo-strokeengineoilmeetingISO-L-EGD(ISO/CD
13738)and J.A.S.O. FC Standards mustbeused. Echo brand premium
Power Blend TM Universal 2-Stroke Oil meets these standards. Engine
problems due to inadequate lubrication caused by failure to use an
ISO-L-EGDandJ.A.S.O.FCcertifiedoil,suchasEchopremiumPower
BlendTM,will void the two-stroke engine warranty. (Emission related
parts only are covered for two years, regardless of two-stroke oil used,
per the statement listed in the Emission Defect Warranty Explanation.)
IMPORTANT
EchopremiumPowerBlendTM Universal2-StrokeOilmaybemixed
at 50:1 ratio for application in all Echo engines sold in the past
regardless of ratio specified in those manuals.
Handling Fuel
WARNING DANGER
FuelisVERYflammable.Useextremecarewhenmixing,storingor
handling or serious personal injury may result.
• Use an approved fuel container.
• DONOTsmokenearfuel.
• DONOTallow flames or sparksnearfuel.
• Fuel tanks/cans may be under pressure. Always loosen fuel caps
slowly allowing pressure to equalize.
• NEVERrefuelaunitwhentheengineisHOTorRUNNING!
• DONOT fill fuel tanks indoors.ALWAYSfillfuel tanks outdoors
over bare ground.
•DONOToverfillfueltank. Wipeupspillsimmediately.
• 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.
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 remaininggasoline, closefuelcontainer, and remix.

12
STARTING COLD ENGINE
WARNING DANGER
The attachment will operate immediately when the engine starts and
could result in loss of control and possible serious injury. Keep
movable parts of the attachment off the ground and away from
objects that could become entangled or thrown.
1. Stop Switch
Move stop switch button (A) away from the STOP position.
2. Choke
Move choke (B) to “Cold Start” ( ) 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 area and keep movable attachment parts clear
of all obstacles. Firmly grasp right hand grip and throttle trigger
lockout with left hand and fully depress throttle trigger to wide
open position. Rapidly pull recoil starter handle/rope (D) until
enginefires(ormaximumfive[5]pulls).
5. Choke
After engine fires or five (5) pulls, move choke lever (B) back to
“Run” ( ) position. Hold throttle trigger fully depressed and pull
recoil starter handle/rope until engine starts and runs. Release
throttle trigger 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.
6. Throttle
After engine warm up, gradually depress throttle trigger to increase
engine RPM to operating speed.
A
B
C
B
D

GRASS TRIMMER
OPERATOR'SMANUAL 13
STARTING WARM ENGINE
The starting procedure is the same as Cold Start except DO NOT close
the choke, and do not depress throttle trigger to wide open position.
WARNING DANGER
The attachment should not move at idle, otherwise serious personal
injurymayresult.
NOTE
If attachment moves, readjust carburetor according to “Carburetor
Adjustment” instructions in this manual or see your ECHO Dealer.
1. Stop Switch
Move stop switch button (A) away from the STOP position.
2. 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.
3. Recoil Starter
Lay the unit on a flat area and keep movable attachment parts clear
of all obstacles. Rapidly pull recoil starter handle/rope (D) until
enginefires.
NOTE
If engine does not start after 5 pulls, use Cold Start Procedure.
STOPPING ENGINE
1. Throttle
Release throttle and allow engine to return to idle before shutting
off engine.
2. Stop Switch
Move stop switch button (A) backward to STOP position.
WARNING DANGER
If engine does not stop when stop switch is moved to STOP
position, close choke (B) - COLD START position - to stall engine.
HaveyourECHO dealer repair stop switch beforeusing trimmer
again.
A
D
A
B
C

14
MAINTENANCE
Your ECHO trimmer is designed to provide many hours of trouble free service. Regular scheduled maintenance will help
your trimmer 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 the task is not listed see your Echo dealer for repairs.
SKILL LEVELS
Level1= Easy to do. Most required tools come with unit.
Level2= Moderatedifficulty.Somespecialized tools may berequired.
Level3= Experiencerequired.Specializedtoolsarerequired.ECHOrecommends
that the unit be returned to your ECHO dealer for servicing.
ECHO offers REPOWERTM 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 INTERVALS
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GRASS TRIMMER
OPERATOR'SMANUAL 15
AIR FILTER
Level1.
Tools required: 25or50mm(1or2in.) Cleaningbrush
Parts required: 90008REPOWERTM AirandFuelFilterKit
1. Close choke (Cold Start Position ( ). This prevents dirt from
entering the carburetor throat when the air filter is removed. Brush
accumulateddirtfromtheairfilterarea.
2. Removetheair filtercover.Lightlybrush debrisfromfilter. Iffilter
is fuel soaked, deformed, or very dirty, replace it.
3. If filter can be reused, be certain it:
• fits tightly in the air filter cavity.
• is installed with the original side out.
NOTE
Carburetor adjustment may be needed after air filter cleaning/
replacement. See Carburetor Adjustment Section.
FUEL FILTER
Level1.
Tools required: 200-250mm(8-10in.)lengthofwirewithoneend
bent into a hook, clean rag, funnel, and an approved
fuelcontainer.
Parts required: 90008REPOWERTM AirandFuelFilterKit
WARNING DANGER
FuelisVERYflammable.Useextremecarewhenmixing,storingor
handling.
1. Use a clean rag to remove loose dirt from around fuel cap and
emptyfueltank.
2. Use the “fuel line hook” to pull the fuel line and filter from the tank.
3. Removethefilterfromthelineandinstallthenewfilter.

16
0.65 mm
(0.026 in.)
SPARK PLUG
Level2.
Tools Required: Spark Plug socket wrench and screw driver, feeler
gauge
Parts Required: REPOWERTM Tune-UpKit P/N90074
IMPORTANT
UseonlyNGKBPM-8Ysparkplug(BPMR-8YinCanada)other-
wise 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.Remainingsandwilldamageengine.
3. Adjust spark plug gap by bending outer electrode.
4. Tightensparkplugto150-170kg/cm(130-150in.lb.).
COOLING SYSTEM
Level2.
Tools required: CrossHeadScrewdriver,4mmHexWrench,
25or 50mm(1 or2in.) cleaningbrush
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.

GRASS TRIMMER
OPERATOR'SMANUAL 17
1. Remove spark plug lead.
2. Removetwo (2)mufflercover screwsandmufflercover(A).
3. Remove screw and top guard (B).
4. Removeenginecover(C).
IMPORTANT
DO NOT use a metal scraper to remove dirt from the cylinder fins.
5. Use brush to remove dirt from the cylinder fins.
6. Remove grass and leaves from the grid between the recoil starter
and fuel tank.
7. Assemble components in reverse order.
A
B
C
EXHAUST SYSTEM
Spark Arrestor Screen
Level2.
Tools Required: Cross Head Screwdriver, Soft Metal Brush,
4mmHexWrench
Parts Required: SparkArrestorScreen, Gasket

18
1. Remove spark plug lead.
2. Removetwo(2)mufflercoverscrewsandmufflercover.
3. Place piston at Top Dead Center (TDC) to prevent carbon/dirt from
enteringcylinder.
4. Remove spark arrestor screen cover (A), gaskets (B), and screen (C)
frommufflerbody.
5. Clean carbon deposits from muffler components.
6. Replace screen if it is cracked, plugged or has holes burned
through.
7. Assemble components in reverse order.
Cylinder Exhaust Port
Level3.
IMPORTANT
The cylinder exhaust port must be inspected and cleaned of excess
carbon every 3 months or 90 hours of operation in order to
maintainthisenginewithintheemissionsdurabilityperiod. ECHO
strongly recommends that you return your unit to your ECHO
dealer for this important maintenance service.
CARBURETORADJUSTMENT
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 Adjustment
High altitude adjustment is not required for proper operation of this
engine.
Level2.
Tools required: Screwdriver,Tachometer(ECHOP/N99051130017)
Parts required: None.
NOTE
Every unit is run at the factory and the carburetor is set in compli-
ance with emission regulations. This carburetor does not have
acceleration and high speed adjustment needles.
ABC

GRASS TRIMMER
OPERATOR'SMANUAL 19
1. Check idle speed and reset if necessary. If a tachometer is avail-
able, idle speed screw (A) should be set to the specifications found
on page 23 "Specifications" of this manual. Turn idle screw (A)
clockwise to increase idle speed; counter clockwise to decrease idle
speed.
WARNING DANGER
When carburetor adjustment is completed, the cutting attachment
should not turn at idle, otherwise serious personal injury may
result.
LUBRICATION
Level1.
Tools Required: 8mm Open-endwrench,screwdriver,cleanrag
Parts Required: ECHO®LUBETM 8oz.(P/N91014)orLithiumBase
Grease
1. Removeplasticshield.
2. Loosen bearing housing locating screw (A), at the top of the
housing, remove mounting screw (B).
3. Pull the flexible drive shaft (C) from the housing, wipe clean and re-
coat with a thin coating 1/2 oz. (15 ml) of grease.
4. Slide the flexible drive shaft back in the drive housing being careful
not to get dirt on the flexible drive shaft.
5. Install the bearing housing and shield.
A
NYLON LINE REPLACEMENT
Level1.
Tools Required: Head locking tool - 1/8 in. dia. Rod (if head is to be
removed)
Parts Required: ECHO2mm(0.080)NylonTrimmerLine6m(20feet)
AB
C

20
A
B
C
D
D
EE
B
F
1. Shut engine off. Lay unit on the ground with head assembly up.
2. Press tab (A) in housing and twist cover CCW (counter clockwise)
to align arrows (B) and remove cover and button. Lift spool from
housing.
3. Use one piece of new nylon line 6m (20 ft.) long and thread through
the molded loop (C) on the spool. Pull line tight and adjust so one
end is 15cm (6 in.) longer than the other.
4. Holdspoolwithwords “THIS SIDE UP” facingyou.Placeindex
finger between the strands and wind line clockwise (follow direc-
tion of arrow molded in spool), tightly and evenly.
5. Place ends of line in the two notches (D) molded in the spool with
12.5to15.2cm(5to6in.)protruding.
6. Feed ends of line through housing eyelets (E) and place spool over
spring(F).
Be sure spool is installed correctly with the words "THIS SIDE UP."
7. Place button on spool and align arrows (B). Push down on cover
and twist cover clockwise until tab locks cover in place.
NOTE
Before installing, test head. Push center button while pulling on
bothlines.Trimmerlineshouldadvanceapproximately1 (one) inch.