Echo TC-2100 User manual

TILLER/CULTIVATOR
OPERATOR'SMANUAL 1
Tiller/Cultivator
Operator's Manual
MODEL TC-2100 Type 1
Serial Number 011441 & Up
TC-2100 Type 1E
Serial Number 001001 & Up
WARNING DANGER
Read rules for safe operation and instructions carefully. ECHO provides an Operator's Manual,
which must be read and understood for proper and safe operation.
X7504082102 89869811762 01/00
WARNING
The engine exhaust from this
product contains chemicals known
to the State of California to cause
cancer, birth defects or other
reproductive harm.

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 that you found in the
package. You will find it easy to use and full of helpful operations tips and SAFETY messages.
WARNING DANGER
Read rules for safe operation and instructions carefully. ECHO provides an Operator's Manual, which must be
read and understood for proper and safe operation.
THE OPERATOR'SMANUAL --
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
- General Description ........................................... 3
- Decals ................................................................ 4
- InternationalSymbols ........................................ 4
- Equipment .......................................................... 5
- Fuel .................................................................... 5
- Personal Condition and Safety Equipment ........ 6
- Safe Operation ................................................... 7
- Extended Operation/Extreme Conditions .......... 7
Description ............................................................... 8
- Emission Control ............................................... 8
- Contents ............................................................. 8
- Specifications................................................... 10
Assembly ................................................................ 11
Pre-Operation ......................................................... 12
- Fuel .................................................................. 12
- Equipment Check ............................................. 13
Operation ................................................................. 14
- StartingColdEngine ......................................... 14
- StartingWarmEngine ....................................... 15
- Stopping Engine................................................ 15
Maintenance ............................................................ 16
- SkillLevels ........................................................ 16
- Maintenance Intervals ...................................... 16
- AirFilter ............................................................ 17
- FuelFilter .......................................................... 17
- SparkPlug ......................................................... 18
- CoolingSystemCleaning .................................. 18
- ExhaustSystem ................................................. 19
- Carburetor Adjustment Type 1E ....................... 20
- Carburetor Adjustment Type 1 ......................... 21
- Lubrication ........................................................ 22
Troubleshooting ...................................................... 23
Storage..................................................................... 24
ServicingInformation............................................... 28
- Parts .................................................................. 28
- Service............................................................... 28
- ECHOConsumer ProductSupport .................... 28
- Warranty Card................................................... 28
- Additional or Replacement Manuals................. 28
- Manual Ordering Instructions........................... 28
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 equip-
ment.
CopyRight© 1999 By Echo, Incorporated
All Rights Reserved.

TILLER/CULTIVATOR
OPERATOR'SMANUAL 3
STOP
SWITCH
IMPORTANT The enclosed
message provides information
necessary for the protection of the
unit.
Thissymbol accompanied by thewords WARNING
andDANGER calls attention to an act or condition that
can lead to serious personal injury to operator and
bystanders.
THROTTLE
TRIGGER
SAFETY
DECAL
TRANSPORT
HANDLE
POWER HEAD
W/DECALS
DEBRIS SHIELD
W/DECALS
TINES GEAR
CASE
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.
The circle with the slash symbol means whatever is
shown within the circle is prohibited. NOTE This enclosed message
provides tips for use, care and
maintenance of the unit.
SAFETY
GENERAL DESCRIPTION
IMPORTANT
See Description and Specification sections for full description and illustration of model.
IMPORTANT
NOTE

4
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.
INTERNATIONAL SYMBOLS
Symbol
description/application Symbol form/shape Symbol
description/application
Symbol form/shape
Hot
Surface
Carburetor adjustment
- Idle speed
Carburetor adjustment
- High speed mixture
Symbol
description/application Symbol form/shape Symbol
description/application
Symbol form/shape
Read and understand
Operator's Manual.
Wear eyes, ears and
head protection
Emergency stop
Fuel and oil mixture
Finger Severing
Carburetoradjustment
- Low speed mixture
Safety/Alert
Avoid all power
lines. This unit is
not insulated
against electrical
current.
Wear hand
protection. Use
two handed.
DO NOT smoke
near fuel.
DO NOT allow
flames or sparks
near fuel.
Wear slip
resistant foot
wear.
Engine choke
control.
Ignition
ON/OFF
Primer
bulb

TILLER/CULTIVATOR
OPERATOR'SMANUAL 5
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.
- Inspect shield for damage and ensure that the shield is securely in
place. Replace if shield is damaged or missing.
- Check that the tines are firmly attached and in safe operating
condition.
FUEL
WARNING 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.
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.
3 M (10 ft.)

6
PERSONAL CONDITION AND SAFETY EQUIPMENT
WARNING DANGER
Tiller/Cultivator users risk injury to themselves and others if the tiller/cultivator is used improperly and or safety
precautions are not followed. Proper clothing and safety gear must be worn when operating a tiller/cultivator.
Failure to do so can result in serious injury.
Physical Condition --
Your judgment and physical dexterity may not be good:
- if you are 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 meet ANSI Z87.1 or CE requirements
whenever you operate the tiller/cultivator.
Hand Protection --
Wear no-slip, heavy duty work gloves in improve your grip on the
Tiller/Cultivator 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.
- Wear hair covering to contain long hair.
- DO NOT WEAR SHORTS,
- DO NOT WEAR TIES, SCARFS, JEWELRY.
Wear sturdy work shoes with non-skid soles;
- DO NOT WEAR OPEN TOED SHOES,
- DO NOT OPERATE UNIT BAREFOOTED.
Wear no-slip, heavy duty work gloves.
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.

TILLER/CULTIVATOR
OPERATOR'SMANUAL 7
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 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 trimmer 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 grasp-
ing, use your whole hand, not just the thumb and index finger.
• Take periodic breaks to minimize repetition and rest your hands.
• Reduce the speed & force in 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.
EXTENDED OPERATION/EXTREME CONDITIONS
SAFE OPERATION
Determine Operation Area
- Provide all operators of this equipment with the Operator's Manual
and instructions for safe operation.
- Review the area to be tilled. Look for hazards that could contribute
to unsafe conditions.
- Spectators and fellow workers must be warned, and children and
animals prevented from coming nearer than 15M (50 ft.) while the
tiller/cultivatoris in use.
- Do not operate this product indoors or in inadequately ventilated
areas.
15M (50 ft.)

8
DESCRIPTION
The ECHO product you purchased has been factory pre-assembled for your convenience. Due to packaging restrictions
some assembly is required.
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.
16
EMISSION CONTROL -
Type 1E Models
The emission control system for this engine is EM (Engine Modifica-
tion).
Emission Control Label (located on Engine) (EXAMPLE ONLY,
information on label varies by FAMILY).
IMPORTANT ENGINE INFORMATION
ENGINE FAMILY : TEH021UB24RA
DISPLACEMENT : 21.2cc
THIS ENGINE MEETS U.S. EPA PHI AND 1995 - 1999
CALIFORNIA EMISSION REGULATIONS FOR ULGE
ENGINES. REFER TO OWNER’S MANUAL FOR
MAINTENANCE SPECIFICATIONS AND ADJUST-
MENTS.
CONTENTS LIST
____ 1 - Power Head & Shield Assembly
____ 1 - Upper Handle Assembly
____ 1 - Left Lower Handle
____ 1 - Right Lower Handle
____ 2 - Lower Handle Mounting Brackets
____ 1 - Plastic Bag (Co-Pack)
____ - 1, 1/4"x 3" Hex Head Shoulder Bolt
____ - 1, 1/4"x 3-1/4" Hex Head Shoulder Bolt
____ - 2, 1/4" Lock Washers
____ - 2, 1/4" Lock Nuts
____ - Carry Handle
____ - Cable Tie
____ - Operator's Manual
____ - Hardware Bag
____ - 2, 10mm x 30mm Carriage Bolt
____ - 2, 10mm nut
____ - 2, 10mm Lock Washer
____ - Warranty Card & Limited
Warranty Statement
____ - Bottle 2-Cycle Engine Oil

TILLER/CULTIVATOR
OPERATOR'SMANUAL 9
1. STOP SWITCH - "Toggle Switch" mounted on top of Throttle Trigger Housing. Move switch Forward to Run,
Back to Stop.
2. THROTTLE TRIGGER - Spring loaded to return to idle when released. When accelerating, pull trigger gradually
for best operating technique. DO NOT hold trigger when starting.
3. MUFFLER/SPARK ARRESTOR - The muffler controls the exhaust noise while the spark arrestor prevent hot,
flowing particles of carbon from leaving the muffler where they could possibly start a fire.
4. RECOIL STARTER HANDLE - Pull recoil handle slowly until starter engages, then pull quickly and firmly.
When engine starts, return handle slowly. DO NOT let handle snap back or damage to unit will occur.
5. FUEL TANK - Contains fuel and fuel filter.
6. FUEL TANK CAP - Cover and seals fuel tank opening.
7. PRIMER BULB - Before starting and after filling the fuel tank, pump primer bulb 10 times or until a steady
stream of fresh fuel is visible through the "clear" fuel return line.
8. AIR CLEANER - Contains replaceable filter element.
9. CHOKE - The choke control is located on the side of the air filter case. Move choke to "COLD START" to close
the choke for cold starting. Move choke to "RUN" position to open choke.
10. GEAR BOX - Houses gears for driving tines.
11. TINES - Used to till or cultivate soil. Removable for cleaning.
12. CARRYING HANDLE - Use for convenient transportation.
13. TINE GUARD - Used to help deflect debris away from operator and reduce accidental contact of tines.
14. SAFETY DECAL - See Description on Page 4.
15. SAFETY DECAL - See Description on Page 4.
16. OPERATOR'S MANUAL - Read and understand this manual before operation. Keep manual in a safe location
for future reference, i.e., operation, maintenance, storage and specifications.
IMPORTANT This spark ignition system system complies with Canadian ICES-002.

10
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SPECIFICATIONS

TILLER/CULTIVATOR
OPERATOR'SMANUAL 11
ASSEMBLY
Tools Required: (2) 11mm (7/16in.) Wrenches
1. Support powerhead assembly upright on tines. Place top handle
assembly to rear.
2. Loosley assemble lower handles using 6.35 x 76mm (1/4in. x 3in.)
hex head shoulder bolt (A), lockwasher (B), and locknut (C) in
front handle end mounting hole as shown.
3. Slide open end of lower handle assembly, front to rear, beneath
powerhead and throttle linkage/ignition wires.
4. Place handle tubes into gearcase handle mounting grooves and
assemble using 6.35 x 82.5mm (1/4in. x 3-1/4in) hex head shoulder
bolt (D), lockwasher (B), and locknut (C) in rear handle mounting
holes. DO NOT TIGHTEN BOLTS.
5. Slide carry handle onto lower handle tubes.
6. Place top handle assembly between lower handles, align mounting
holes and install (2) 10 x 30mm carriage bolts (E), (2) lockwashers
(F), and (2) nuts (G). Carriage bolts should be installed from the
outside through the lower handle then upper handle tube.
7. Securely tighten lower handle bolts first, then the upper handle
bolts.
8. Secure throttle linkage and stop switch lead midway on right lower
handle with cable tie.
AB,C
E
F,G H
DB,C

12
PRE-OPERATION
FUEL
Fuel Requirements
Gasoline - Use 89 Octane [ ] gasoline or gasohol known to be good
quality. Gasohol may contain up to 10% Ethyl (grain) alcohol or 15%
MTBE(methyltertiary-butylether).Gasohol containingmethanol
(wood alcohol) is NOT approved.
Two-Stroke Oil - A two-stroke engine oil meeting ISO-L-EGD
Standard (ISO/CD 13738), must be used. Echo brand Premium 50:1 oil
meets this standard. Engine problems due to inadequate lubrication
caused by failure to use an ISO-L-EGD approved oil, such as Echo
Premium 50:1 Two-stroke Oil, will void the two-stroke engine war-
ranty. (Emission related parts only are covered for two years, regard-
less of two-stroke oil used, per the statement listed in the EPA Phase I/
California Emission Defect Warranty Explanation.)
Mixing - Follow directions on the oil container.
Handling Fuel
WARNING 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.
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.
R + M
2

TILLER/CULTIVATOR
OPERATOR'SMANUAL 13
AfterRefueling;
- Wipe any spilled fuel from the unit.
- Move at least 3 M (10 ft.) from refueling location before starting
the engine.
Afteruse;
- 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.
IMPORTANT
Stored two-stroke fuel may separate. ALWAYS shake fuel
container thoroughly before each use.
EQUIPMENT CHECK
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.
- Inspect guard for damage and ensure that it is securely in place.
Replace guard if damaged or missing.
- Check that the tines are firmly attached and in safe operating
condition
SM TWTF S
1234567
8 9 10 1112 13 14
15 16 17 1819 20 21
22 23 24 2526 27 28
29 30 31
3 M (10 ft.)

14
OPERATION
- Provide all operators of this equipment with the Operator's Manual
and instructions for safe operation.
- Before starting the unit, equip yourself and any other person
workingwithin the 15M (50 ft.) Safety Zone with the required
Protective Equipment and clothing.
- During operation, the complete unit, especially the engine and the
gear housing may become very hot, too hot to touch. Avoid
contact during and immediately after operation.
- Do not operate this product indoors or in inadequately ventilated
areas.
STARTING COLD ENGINE
WARNING DANGER
The tines should not move at idle. If tines move, readjust carbure-
tor according to "Carburetor Adjustment" instructions in this
manual or see your ECHO Dealer, otherwise serious personal injury
mayresult.
1. STOPSWITCH-START.
Move Stop Switch (A) to START position.
2. CLOSECHOKE-COLDSTART.
Move choke (B) to START (closed) position. Throttle must remain
at idle for starting.
3. PRIMER-PUMPBULB.
Pumpprimer bulb (C) 10 times,until fuel is visiblein the “Clear”
fuelreturn line. B
C

TILLER/CULTIVATOR
OPERATOR'SMANUAL 15
4. START-PULLROPE.
Pull recoil starter rope until engine fires.
5. OPENCHOKE-RUN.
Move choke (B) to RUN (open) position.
6. RESTARTENGINE-PULLROPE.
Pull recoil starter rope until engine fires.
WARNING DANGER
When engine starts, the tines may move even with the throttle
trigger in idle (released) position.
STARTING WARM ENGINE
The starting procedure is the same as Cold Start except DO NOT close
the choke (B).
NOTE
If engine does not start after 5 pulls, use Cold Start Procedure.
1. STOP SWITCH - START.
Place Stop Switch (A) in START position.
2. PRIMER - PUMP BULB Pump primer bulb (C) until fuel is
visible in the "Clear" fuel return line.
3. CHOKE - OPEN.
Be certain choke (B) is open.
4. START-PULLROPE.
Pull recoil starter rope.
5. STARTENGINE.
Start engine at idle.
STOPPING ENGINE
1. RELEASETHROTTLETRIGGER.
Release throttle trigger and allow engine to idle for a minute.
2. STOPSWITCH-STOP.
Move stop switch to STOP position (A).
WARNING 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 tiller/
cultivator again.
B
C

16
MAINTENANCE
Your ECHO tiller/cultivator is designed to provide many hours of trouble free service. Regular scheduled maintenance will
help your tiller/cultivator 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-YOUR-
SELF or have the ECHO Dealer do it, each maintenance task has been graded. If the task is not listed, see your ECHO
dealerforrepairs.
SKILL LEVEL
Level1= Easy to do. Most required tools come with unit.
Level2= Moderatedifficulty. Some specialized tools may be required.
Level3= Experiencerequired.Specializedtoolsarerequired.ECHOrecommends
that the unit be returned to your ECHO Dealer for service.
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.
MAINTENACEINTERVALS
Component/System Maintenance
Procedure
Daily
or
Before
Use
Every
Refuel
3
Months
or 90
Hours
6
Months
or 300
Hours
Yearly
or 600
Hours
Air Filter Clean/Replace I /C R
Fuel Strainer Inspect/Replace IR
Fuel Line Inspect/Replace II
Carburetor Inspect/Rebuild/Replace CR(1)
Choke System Inspect/Replace I
Cooling System Inspect/Clean I/C
Muffler Spark Arrestor Clean/Replace I / C
Gear Housing Grease I*
Tines Inspect/Clean I
Recoil Starter Rope Inspect/Clean I
Fuel Leaks Inspect/Repair II
Spark Plug Clean/Replace I / C R
Ignition System Clean/Replace No M aintenance required for coil and flywheel
Screws/Nuts/Bolts Inspect/Tighten/Replace II
I = INSPECT, R=REPLACE,C=CLEAN
IMPORTANT-Timeintervalsshownaremaximum.Actualuseandyourexperiencewilldeterminethefrequencyof
requiredmaintenance.
*Or 50 hours, whichever occurs first.
(1)Replacement will be required for commercial use after600 hours. For Consumer use, cleaning every 6months is
required.CleaningincludesRebuild Kits.

TILLER/CULTIVATOR
OPERATOR'SMANUAL 17
AIR FILTER
Level1.
Toolsrequired: 25mm-50mm(1in.-2in.)mediumbristlepaintbrush.
Partsrequired: 90008REPOWERTM AIR&FUELFILTERKIT.
1. Close choke (Cold Start Position). This prevents dirt from entering
the carburetor throat when the air filter is removed. Brush accumu-
lated 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 seals the cavity in the air cleaner cover.
-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.
Toolsrequired: Fuellinehook.203-254mm(8in.-10in.)lengthofwire
with one end bent into a hook. Clean rag, funnel, and an approved fuel
container.
Partsrequired: 90008REPOWERTM AIR&FUELFILTERKIT
WARNING DANGER
FuelisVERYflammable.Useextremecarewhenmixing,storingor
handling, or serious personal injury may result.
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 (A) from the
tank.
3. Remove the filter (A) from the line and install the new filter.

18
SPARK PLUG
Level2.
Tools Required: Spark Plug socket wrench and screw driver, Feeler
gauge. Preferably a wire gauge.
PartsRequired: SparkPlug,NGK-BPMR-7A
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. Tightensparkplugto145-155kg/cm(125-135in.lb.).
COOLING SYSTEM CLEANING
Level3.
Toolsrequired: CrossHeadScrewdriver, 3mmHexwrench, Pointed
WoodStick,25mm-50mm(1in.-2in.)mediumbristlepaintbrush.
Parts Required: None.
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.
1. Remove spark plug lead and throttle cable end from the carburetor
swivel.
2. Remove the four screws that retain the cover. Two at the top of the
recoil starter, two on either side of the front. Lift the cover from the
engine and lay to the front of the tiller/cultivator.
NOTE
The throttle linkage remains assembled to the cover and the spark
pluglead and grommetremaininstalled.
0.65 mm
(0.026 in.)

TILLER/CULTIVATOR
OPERATOR'SMANUAL 19
IMPORTANT
DO NOT use a metal scraper to remove dirt from the cylinder fins.
3. Use the wooden stick or brush to remove dirt from the cylinder
fins.
4. Remove grass and leaves from the grid between the recoil starter
and fuel tank.
5. When installing the cover, be certain the tab of the metal deflector
shield is in the slot of the cover.
EXHAUST SYSTEM
Spark Arrestor Screen
Level3.
ToolsRequired: CrossHeadScrewdriver. 3mmHex wrench. Softmetal
brush. Wooden carbon scraper.
Parts Required: P/N13001642031SparkArrestorScreen
P/N14586642031ScreenHolder
1. Remove screen cover (A), screen holder (B), and gasket (C) from
mufflerbody.
2. Clean carbon deposits from screen (D) and muffler components.
3. Replace screen if it is cracked, plugged or has holes burned
through.
4. Install with new gaskets.

20
CARBURETORADJUSTMENT
Emission Models
Level2.
Toolsrequired: Screwdriver,Tachometer(ECHOP/N99051130017).
Parts required: None.
NOTE
Every unit is run at the factory and the carburetor is set in compli-
ancewith EPA Phase 1 and California Emission Regulations. In
addition, the carburetor is equipped with HI (A) and LO (B) needle
adjustment limiters that prevent settings outside acceptable limits.
1. Before adjusting the carburetor, clean or replace the air filter and
spark arrester screen.
2. Start engine and run for several minutes to reach operating
temperature.
3. Stop engine. Turn HI (A) speed needle CCW (counter clockwise)
to stop. Turn LO (B) speed needle midway between full CCW and
CW (clockwise) stops.
4. Idle Speed Adjustment.
-Start engine and turn idle (C) speed adjustment screw CW until the
tines begin to turn, then turn the screw CCW until tines stop
turning. Turn screw CCW an additional 1/4 turn.
5. Accelerate to full throttle for 2-3 seconds to clear excess fuel from
engine then return to idle. Accelerate to full throttle to check for
smooth transition from idle to full throttle. If engine hesitates, turn
LO (B) needle CCW an additional 1/8 turn and repeat acceleration.
Continue adjusting until smooth acceleration results.
6. Check HI (A) speed RPM at W.O.T. (Wide Open Throttle). HI
speed RPM should be set to specifications found on page 10
"Specifications" of this manual.
7. Check idle speed and reset if necessary. If a tachometer is available,
idle speed should be set to the specification found on page 10
"Specifications" of this manual.
WARNING DANGER
When carburetor adjustment is completed, tines should not move
at idle, otherwise serious personal injury may result.
AB
C