Echo GT-225 User 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.
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Operator’s Manual
GT-225
Grass 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.
Read and understand all provided literature before use. Failure to do so could result in
serious injury.

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TABLE OF CONTENTS GT-225
TABLE OF CONTENTS
Introduction ........................................................................................................................................ 3
The Operator’s Manual ................................................................................................................ 3
The Safety Manual....................................................................................................................... 3
Servicing Information ......................................................................................................................... 3
Parts and Serial Number.............................................................................................................. 3
Warranty Registration .................................................................................................................. 3
Service......................................................................................................................................... 3
Safety................................................................................................................................................. 4
Manual Safety Symbols and Important Information..................................................................... 4
International Symbols .................................................................................................................. 5
Personal Condition and Safety Equipment .................................................................................. 6
Equipment.................................................................................................................................... 9
Description....................................................................................................................................... 10
Contents .......................................................................................................................................... 11
Assembly ......................................................................................................................................... 12
Shield Installation....................................................................................................................... 12
Nylon Line Installation................................................................................................................ 12
Support Handle.......................................................................................................................... 13
Operation ......................................................................................................................................... 13
Fuel............................................................................................................................................ 13
Starting Cold Engine.................................................................................................................. 15
Starting Warm Engine................................................................................................................ 16
Stopping Engine......................................................................................................................... 17
Applications................................................................................................................................ 17
Operating Techniques - Nylon Line Head.................................................................................. 17
Maintenance .................................................................................................................................... 18
Skill Levels................................................................................................................................. 18
Maintenance Intervals................................................................................................................ 18
Air Filter...................................................................................................................................... 19
Fuel Filter................................................................................................................................... 19
Spark Plug ................................................................................................................................. 20
Cooling System.......................................................................................................................... 20
Exhaust System......................................................................................................................... 21
Carburetor Adjustment............................................................................................................... 22
Lubrication ................................................................................................................................. 23
Troubleshooting ............................................................................................................................... 24
Storage ............................................................................................................................................ 25
Long Term Storage (Over 30 Days)........................................................................................... 25
Specifications................................................................................................................................... 26
Specifications................................................................................................................................... 27

GT-225 INTRODUCTION
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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 and Serial Number
Genuine ECHO Parts and Assemblies for your 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.___________________Serial No.___________________
Warranty Registration
Your bill of sale must be provided to demonstrate proof of warranty.
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, visit
echo-latinamerica.com.

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SAFETY GT-225
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 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.

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International Symbols
Symbol Description Symbol Description Symbol Description Symbol Description
Read and
understand
Owners
Manual
Fuel and Oil
mixture
Carburetor
Adjustment -
Low speed
mixture
Carburetor
Adjustment -
High speed
mixture
Wear eye, ear
and head
protection
Rotating
Cutting
Attachment
Safety / Alert
Carburetor
Adjustment -
Idle speed
Emergency
Stop Hot Surface
Avoid all power
lines. This unit
is not insulated
against
electrical
current.
Do not exceed
10,000 RPM
Wear hand
and foot
protection
Use
two-handed
DO NOT smoke
near fuel
Plan retreat
path from falling
objects
Primer Bulb
Choke Control
“COLD START”
Position
(Choke Closed)
Ignition
ON / OFF
DO NOT allow
flames or
sparks near fuel
Wear slip
resistant
footwear
Choke Control
“RUN”
Position
(Choke Open)
Do not use
blades
String line only
Keep
bystanders and
helpers
away 15 m
(50 ft.)
Do not operate
without guards
and shields in
place.
STOP
15 m
(50 feet)
15 m(50ft)

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SAFETY GT-225
Personal Condition and Safety Equipment
Cancer and Reproductive Harmwww.P65Warnings.ca.gov
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 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.
Wear sturdy work shoes with nonskid rubber soles:

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• 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 and 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.
• 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.

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SAFETY GT-225
• 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.
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.

GT-225 SAFETY
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Equipment
Use only ECHO attachments. Serious injury may 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 and safety manual.
• Check unit for loose/missing nuts, bolts, and screws. Tighten and/or replace as needed.
• Inspect shield for damage and ensure that the cut-off knife is securely in place. Replace if either is
damaged or missing.
• Check that the cutting attachment is firmly attached and in safe operating condition.
• Check that handle and harness (if included) are adjusted for safe, comfortable operation. See Assembly
Section for proper adjustment.
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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DESCRIPTION GT-225
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. Safety
label is for example only. Your label my appear slightly different.
12
3
5
4
6
7
9
8
10
11
13
12
15
16
17
18
14

GT-225 CONTENTS
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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. Spark Plug
2. Top Guard
3. Spark Arrestor Muffler or Spark Arrestor Muffler with Catalyst
4. Fuel Tank
5. Fuel Tank Cap
6. Recoil Starter Handle
7. Choke Lever
8. Air Cleaner
9. Purge Bulb
10. Power Head
11. Throttle Handle - For Right Hand
12. Throttle Trigger
13. Stop Switch
14. Support Handle - For Left Hand
15. Drive Shaft Assembly
16. Debris Shield with Cut-Off Knife
17. Cut-Off Knife
18. Rapid Loader® Head
____1 Power Head / Drive Shaft Assembly
____1 Operator’s Manual
____12 Pieces of pre-cut Nylon Line
____1 Shield Assembly

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ASSEMBLY GT-225
ASSEMBLY
Shield Installation
Parts required: Shield assembly.
Cut-off knife on debris shield has sharp edges. Avoid contact when installing or removing line head.
Wear Gloves or personal injury may result:
•Cut-off knife is sharp.
•Gear case and surrounding area may be hot.
1. Remove wing nut (A), washer (B), and bolt (C) from shield.
2. Snap the shield over the bearing housing.
3. Install bolt (C), washer (B), and wing nut (A).
Nylon Line Installation
1. Shut engine OFF. Lay unit on the ground with head assembly up.
2. Remove old nylon line through center recess of head.
3. Thread new lines through outside holes (A) in housing until ends meet in
center of recess.
Note: Insert cutting line ends to center of head recess to insure easy
removal of used lines.
A
B
C
AA

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Support Handle
Note: Label (A) shows minimum spacing for Support Handle location.
Support Handle is pre-installed. Re-positioning and tightening is all
that is required.
1. Position Support Handle (A) in comfortable operating position and
tighten wing nut (B). The cutting attachment should be 5 cm to 7.5 cm
(2 in. to 3 in.) above the ground and as level as possible.
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.
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.
Operation of this equipment may 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. 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
Use of unmixed, improperly mixed, or fuel older than 90 days, (stale fuel), may cause hard starting, poor
performance, or severe engine damage and void the product warranty. Read and follow instructions in the
Storage section of this manual.
Fuel containing more than 25% ethanol is NOT approved for use in ECHO 2-stroke gasoline engines.
Fuel containing more than 25% ethanol may cause performance problems, loss of power,
overheating, fuel vapor lock, and unintended machine operation, including, but not limited to,
improper clutch engagement. Fuel containing more than 25% ethanol may also cause premature
deterioration of fuel lines, gaskets, carburetors and other engine components.
A
A
B
A

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OPERATION GT-225
Fuel Requirements
Gasoline - Use 89 Octane (mid grade or higher) gasoline known to be good quality. Gasoline may contain
up to 25% Ethanol. Gasoline containing methanol (wood alcohol) is NOT approved.
Two Stroke Oil - A two-stroke engine oil meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FD Standards
must be used. ECHO brand 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. FD certified oil will void the
two-stroke engine warranty.
ECHO branded 2-stroke oils 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 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 remaining gasoline, close fuel container, and remix.
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.

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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
The attachment will operate immediately when the engine starts, and could result in possible
serious injury.Keep movable parts of the attachment away from objects that could become
entangled or thrown, and surfaces that could cause loss of control.
1. Stop Switch
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 four or five times.
4. Recoil Starter
Lay the unit on a flat area and keep movable attachment parts clear of all
obstacles. Firmly grasp throttle handle with left hand and fully depress
throttle trigger to wide open position. Rapidly pull recoil starter
handle/rope (D) until engine fires (or maximum five] pulls).
A
BC
D

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OPERATION GT-225
5. Choke
After engine fires (or 5 pulls), move choke (B) to the RUN ( ) (open) position. Firmly grasp throttle handle
with left hand and fully depress throttle trigger to wide open position. Pull 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 five pulls, repeat instructions 2 - 5.
6. Throttle Trigger
After engine warm-up, grip throttle handle and support handle. Gradually depress throttle trigger to
increase engine RPM to operating speed.
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.
The attachment should not move at idle, otherwise serious personal injury may result.
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 (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 four or five times.
3. Recoil Starter
Lay the unit on a flat area and keep movable attachment parts clear of all
obstacles. Firmly grip throttle handle with left hand. Rapidly pull recoil
starter handle/rope (D) until engine fires.
Note: If engine does not start after five pulls, use Cold Start Procedure.
A
C
D

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Stopping Engine
1. Throttle
Release throttle and allow engine to return to idle before shutting off
engine.
2. Stop Switch
Move stop switch (A) to STOP position.
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 unit again.
Applications
Do not install blades on GT (Curved Shaft) trimmers.
Operating Techniques - Nylon Line Head
Nylon line heads may be used for trimming, scything, edging, and scalping of grass and light weeds.
Trimming
Feed the spinning line into the material to be cut. Tilt cutting head to the left while cutting to direct debris
away from the operator.
Scything
Scything - Swing the cutting head in a level arc, gradually feeding the line into the material being cut. Move
forward with each arc to cut a swath. Width of cutting swath depends on arc. Use a larger arc for a wider
swath, or a smaller arc for a narrow swath. Keep line head tilted to direct cutting debris forward or away from
you.
Edging and Scalping
Both of these are done with the nylon line cutting head tilted at a steep angle. Scalping is removing top
growth, leaving the earth bare. Edging is trimming the grass back where it has spread over a pavement or
driveway. During both edging and scalping, hold the unit at a steep angle in a position where the debris, and
any dislodged dirt and stone, will not come back towards you even if it ricochets off the hard surface.
General
• Debris flows in direction of line head rotation. Change line head position to assure debris flow is directed
away from operator.
• Keep cutting line away from wire fences to avoid entanglement.
• Operate trimmer only with cutting head below knee height.
A

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MAINTENANCE GT-225
MAINTENANCE
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.
Allow unit to cool before performing service. Wear gloves to protect hands from sharp edges and
hot surfaces.
Your ECHO unit is designed to provide many hours of trouble free service. Regular scheduled maintenance
will help your unit 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
Level 1 = Easy to do. Common tools may be required.
Level 2 = Moderate difficulty. Some specialized tools may be required.
Maintenance Intervals
MAINTENANCE PROCEDURE LETTER CODES: I = INSPECT, R = REPLACE, C = CLEAN
IMPORTANT NOTE - Time intervals shown are maximum. Actual use and your experience will determine
the frequency of required maintenance.
MAINTENANCE PROCEDURE NOTES:
(1) Apply lithium based grease every 25 hours of use.
(2) Low evaporative fuel tanks DO NOT require regular maintenance to maintain emission integrity.
* Replacement is recommended based on the finding of damage or wear during inspection.
COMPONENT/SYSTEM MAINTENANCE
PROCEDURE
REQ’D
SKILL
LEVEL
DAILY
OR
BEFORE
USE
EVERY
REFUEL
3
MONTHS YEARLY
Air Filter Inspect/Clean 1I/C* R *
Choke Shutter Inspect/Clean 1 I / C
Fuel Filter Inspect/Replace 1I*I / R *
Fuel Cap Gasket Inspect/Replace 1I*R *
Fuel System Inspect/Replace 1I(2)*I (2) *
Spark Plug Inspect/Clean/Replace 1 I / C / R *
Cooling System Inspect/Clean 2 I / C
Muffler Spark Arrestor Inspect/Clean/Replace 2 I / C / R *
Cylinder Exhaust Port Inspect/Clean/De-carbon 2 I / C
Drive Shaft Inspect/Grease 2I(1)
Gear Housing None
Recoil Starter Rope Inspect/Clean 1I/C*
Screws/Nuts/Bolts Inspect/Tighten/Replace 1I*

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Air Filter
Level 1.
1. Close choke (COLD START [ ] position). This prevents dirt from
entering the carburetor throat when the air filter is removed. Brush
accumulated dirt from air cleaner area.
2. Remove air filter cover. Brush dirt from inside cover.
3. Replace filter if it is damaged, fuel soaked, very dirty, or the rubber sealing edges are deformed.
• Lightly brush debris from filter.
• Soak heavily soiled filters in water/detergent solution to loosen dirt, then brush lightly.
• Rinse with clean water and allow to dry completely before reuse.
4. Install air filter in air filter case.
5. Install air filter cover.
Fuel Filter
Level 1.
Fuel is VERY flammable. Use extreme care when mixing, storing or 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. Pull the fuel filter from the fuel tank.
3. Remove the filter from the line and install the new filter.
Note: Federal EPA regulations require all model year 2012 and later
gasoline powered engines produced for sale in the United States to
be equipped with a special low permeation fuel supply hose
between the carburetor and fuel tank. When servicing model year
2012 and later equipment, only fuel supply hoses certified by EPA
can be used to replace the original equipment supply hose. Fines
up to $37,500 may be enforced for using an un-certified replacement part.
Parts required: Air and fuel filter kit.
Parts required: Air and fuel filter kit.

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MAINTENANCE GT-225
Spark Plug
Level 2.
Use only NGK BPM8Y spark plug otherwise 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.
Remaining sand will damage engine.
3. Adjust spark plug gap by bending outer electrode.
4. Tighten spark plug to 150-170 kgf•cm (130-150 lbf•in).
Cooling System
Level 2.
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.
2. Remove air cleaner cover (A).
3. Remove engine cover (B).
DO NOT use a metal scraper to remove dirt from the cylinder fins.
Parts required: Tune-Up Kit.
0.65 mm (0.026 in.)
A
B