Shindaiwa X7502824900 User Manual
SHINDAIWA OWNER’S/OPERATOR’S MANUAL
T254 TRIMMER
X7502824900
04/10
WARNING!
Minimize the risk of injury to yourself and
others! Read this manual and familiarize yourself
with the contents. Always wear eye and hearing protection when operating this unit.
Introduction
The Shindaiwa H4 series of hand-held power equipment is designed and built to deliver superior performance and reliability
without compromise to quality, comfort, safety or durability. Shindaiwa engines represent the leading edge of high-performance engine technology, delivering exceptionally high power with remarkably low displacement and weight. As an owner/
operator, you’ll soon discover for yourself why Shindaiwa is simply in a class by itself!
IMPORTANT!
The information contained in these instructions describes units available at the time of publication.
ECHO, Inc. reserves the right to make changes to products without prior notice, and without obligation to make alterations to
units previously manufactured.
WARNING!
The engine exhaust from this product contains chemicals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
Contents
Safety ................................................... 3
Product Description .............................. 5
Specications ....................................... 6
Emission Control .................................. 6
Assembly .............................................. 6
Mixing fuel ............................................ 9
Filling the fuel tank.............................. 10
The operational procedures described in this manual are intended to help you get the most from this unit as well as to protect
you and others from harm. These procedures are guidelines for safe operation under most conditions, and are not intended to
replace any safety rules and/or laws that may be in force in your area. If you have questions regarding your H4 series hand-held
power equipment, or if you do not understand something in this manual, contact Shindaiwa at the address printed on the back of
this Manual.
PAGE PAGE
Starting the Engine .............................11
Stopping the Engine ........................... 12
Checking Unit Condition ..................... 12
Operation ............................................ 13
Maintenance ....................................... 14
Long Term Storage ............................. 19
Troubleshooting Guide ....................... 20
Warranty ............................................ 23
IMPORTANT!
Attention Statements
Throughout this manual are special “attention statements”.
IMPORTANT!
DANGER!
A statement preceded by the triangular
attention symbol and the word “DANGER” contains
information that should be acted upon to prevent
serious injury or death.
WARNING!
A statement preceded by the triangular
attention symbol and the word “WARNING” contains information that should be acted upon to prevent serious bodily injury.
A statement preceded by the word “IMPORTANT” is
one that possesses special signicance.
CAUTION!
A statement preceded by the word “CAUTION”
contains information that should be acted upon to
prevent mechanical damage.
NOTE:
A statement preceded by the word “NOTE” contains information that is handy to know and may make your job
easier.
2
Warning and Operational Labels
50FEET
(15m
)
HOT SURFACE
Read and follow this operator's
manual. Failure to do so could
result in serious injury..
Make sure no one is within
15 M / 50 feet of an operating
machine.
WARNING !Surface can be hot. Always wear gloves when handling
this unit.
Wear eye and hearing protection
at all times during operation of
this unit. Wear head protection
where there is a risk of falling
objects.
Beware of thrown or
richocheted objects
Safety
Work Safely
Trimmers and brushcutters operate at very high speeds and can do serious damage or injury if they are misused or abused.
Never allow a person without training or instruction to operate this unit!
WARNING!
Never make unauthorized attachment
installations.
Stay Alert
You must be physically and mentally t to operate this unit
safely.
WARNING!
Use Good Judgment
ALWAYS inspect unit before each use. Replace any
damaged parts.
NEVER run the engine when transporting the unit.
NEVER run the engine indoors! Make sure there is
always good ventilation. Fumes from engine exhaust
can cause serious injury or death.
ALWAYS stop the unit immediately if it suddenly begins
to vibrate or shake. Inspect for broken, missing or
improperly installed parts or attachments.
NEVER extend trimming line beyond the length specied
for your unit.
ALWAYS keep the unit as clean as practical. Keep it free
of loose vegetation, mud, etc.
ALWAYS hold the unit rmly with both hands when cut-
ting or trimming, and maintain control at all times.
ALWAYS use the proper cutting tool for the job.
ALWAYS keep the handles clean
ALWAYS disconnect the spark plug wire before perform-
ing any maintenance work.
any kind if you are tired or if you are under
the inuence of alcohol, drugs, medication or any other
substance that could affect your ability or judgement.
• ALWAYS stop engine, disconnect spark plug, and
• DO NOT start or operate unit unless all guards and
• NEVER reach into any opening while the engine is
WARNING!
Operation of this equipment may create sparks
that can start res around dry vegetation. This
unit is equipped with a spark arrestor and a spark
arrestor may be required. The operator should
contact local re agencies for laws or regulations
relating to re prevention requirements.
WARNING!
Never operate power equipment of
WARNING!
Moving parts can amputate ngers or cause
severe injuries. Keep hands, clothing and loose
objects away from all openings.
make sure all moving parts have come to a complete stop before removing obstructions, clearing
debris, or servicing unit.
protective covers are properly assembled to unit.
running. Moving parts may not be visible through
openings.
WARNING!
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.
3
READTHE
OPERATOR’SMANUAL
WEARHEARING AND ANSI Z8 7.1
APPROVEDEYE PROTECTION
KEEPBYSTANDERSAWAY
ATLEAST50 FEET(15 m)
BEWAREOF THROWN OR
RICOCHETED OBJECTS
DON OTOPERATETHIS
MACHINE WITH A BLADE
50FEET
(15m)
19422-00028ShindaiwaInc.
Safety Labels
HOT SURFACE
The Properly Equipped Operator
This label indicates the minimum distance between
front handle and rear grip per ANSI B175.3.
IMPORTANT!
Safety and Operation Information Labels: Make sure
all information labels are undamaged and readable.
Immediately replace damaged or missing information
labels. New labels are available from your local authorized Shindaiwa dealer.
Wear hearing protection devices and a
broad-brimmed hat or helmet. A helmet
is required when using a blade-equipped
brushcutter to clear small trees.
Prolonged exposure to excessive noise
is fatiguing and could lead to impaired
hearing.
Wear close-tting clothing to
protect legs and arms. Gloves
offer added protection and are
strongly recommended. Do not
wear clothing or jewelry that
could get caught in machinery
or underbrush. Secure long hair
so that it is above shoulder level.
NEVER wear shorts!
Long-term exposure to vibration
can damage your hands.
Keep a proper footing and do not
overreach. Maintain your balance at all
times during operation.
Wear appropriate footwear (non-skid
boots or shoes): do not wear opentoed shoes or sandals. Never work
barefooted!
Always wear eye protection such as
goggles or safety glasses to shield
against thrown objects.
Always wear a harness when operating the unit .
It adds comfort and helps ensure safety by limiting
movement fore and aft. When the harness is
adjusted properly, the unit should balance with the
cutting attachment parallel to the ground.
Always operate with both hands
rmly gripping the unit.
Always make sure the
appropriate cutting attachment
shield is correctly installed and
in good condition. Do not
operate the unit if the
cutting attachment shield
is missing, loose, or
broken.
Keep away from the rotating
trimmer line at all times, and
never lift a moving attachment
above waist-high.
4
Be Aware of the Working Environment
Avoid long-term
operation in very hot
or very cold weather.
Be extremely careful
of slippery terrain,
especially during rainy
weather.
Be constantly alert for
objects and debris that
could be thrown either
from the rotating cutting
attachment or bounced
from a hard surface.
If contact is made with a hard object,
stop the engine and inspect the cutting
attachment for damage.
Make sure
bystanders
or observers
outside the
15 meter (50
feet) “danger
zone” wear eye
protection.
15 METERS
(50 FEET)
Always make sure
the appropriate
cutting attachment
shield is correctly
installed.
Reduce the risk of bystanders being
struck by ying debris. Make sure no
one is within 15 meters (50 feet)—
that’s about 16 paces of an operating
attachment. Stop immediately if a child,
pet, or person comes within a 15 meter
(50 feet)radius. Outside this radius,
there is still a risk of injury from thrown
objects.
Do not operate the unit
if the cutting attachment
shield is missing, loose,
or broken.
ALWAYS clear your work area of trash
or hidden debris that could be thrown
back at you or toward a bystander.
When operating in rocky terrain or
near electric wires or fences, use
extreme caution to avoid contacting
such items with the cutting attachment.
Product Description
Using the illustration as a guide, familiarize yourself with your machine and its various components. Understanding your machine helps ensure
top performance, long service life and safer
operation.
Outer Tube
Gearcase
Cutting Attachment
Shield
Trimmer Head
Handle
Ignition
Switch
Throttle
Interlock
Throttle
Trigger
Spark plug
Fuel
Tank
Grip
5
Specications
Engine Name T254
Engine Type 4-cycle, vertical cylinder, air cooled
Dry Weight (Without guard and strap) 5.0 kg/11.0 lb.
Bore x Stroke 34 x 27 mm (1.3 x 1.1 in.)
Displacement 24.5 cc (1.5 cu. in.)
Fuel/Oil Ratio 50:1 with *ISO-L-EGD or JASO FD class engine oil
Fuel Tank Capacity 590 ml (20 oz.)
Carburetor Type Diaphragm-type carburetor
Ignition One-piece electronic, program-controlled
Spark Plug** NGK CMR5H
Spark Plug Gap 0.6 mm (0.024 in)
Torque 16.7 - 18.6 N∙m (148-165 in • lbf)
Air Cleaner Type Foam pre-lter; sealed felt main lter
Starting Method Recoil
Stopping Method Slide switch
Transmission Type Automatic, centrifugal clutch w/bevel gear
Engine Idle Speed 3,000 RPM
Clutch Engagement Speed 4,100 RPM
Wide Open Throttle Speed (W.O.T.) 10,500 RPM
Specications are subject to change without notice.
Emission Control (Exhaust & Evaporative)
EPA 2010 and Later and/or C.A.R.B. TIER III
The emission control system for the engine is EM/TWC (Engine Modication and 3-way Catalyst) and for the fuel tank
the Control System is EVAP (Evaporative Emissions) or N (for nylon tank). Evaporative emission may be applicable to
California models only.
An Emission Control Label is located on the unit. (This is an EXAMPLE ONLY; information on label varies by en-
gine FAMILY).
PRODUCT EMISSION DURABILITY (EMISSION COMPLIANCE PERIOD)
The 300 hour emission compliance period is the time span selected by the manufacturer certifying the engine
emissions output meets applicable emissions regulations, provided that approved maintenance procedures are
followed as listed in the Maintenance Section of this manual.
Assembly
IMPORTANT!
The terms “left”, “left-hand”, and “LH”; “right”, “right-hand”, and “RH”; “front” and “rear” refer to directions as viewed by the
operator during normal operation.
Prior to Assembly
Before assembling, make sure you have all the components required for a complete unit and inspect unit and components
for any damage.
Engine and shaft assembly ■
Cutting attachment shield ■
Cutting attachment ■
6
Kit containing cutting attachment shield, mounting ■
bracket and hardware, this owner’s/operator’s manual
and tool kit for routine maintenance. Tool kits vary by
model and may include a spark plug/screwdriver combination wrench, and a scraper.
Cutting attachment shield
CAUTION
Wear Gloves or personal injury may result:
•Cutoffknifeissharp.
•Gearcaseandsurroundingareamaybehot.
NOTE
The plastic shield is for use with the Nylon Line Head only. Install Metal
Shield when using plastic or metal blades.
1. Remove plastic threaded shaft sleeve and adapter plate (C) from PTO shaft
(A).
2. Placetheshieldonthebottomofthebearinghousingange.
3. Place shield plate (B) on shield, align holes. Install three (3) screws from
bottom through plate and shield into gear case.
4. Assemble adapter plate (C) onto PTO shaft.
Install trimmer head
1. Be sure adapter plate (C) remains on PTO shaft (A).
2. Align locking hole in upper plate with notch in edge of gear housing and
insert head locking tool (D).
3. Thread line head (E) onto shaft by turning it counter-clockwise until head is
tight against adapter plate (C).
4. Remove locking tool (D).
A
B
C
D
A
C
IMPORTANT
Semi-automatic nylon line heads must be used only with plastic debris shield
with cut-off knife. Using nylon line heads with metal debris shield can result
in trimmer damage, caused by operation with excessive line length.
To advance trimmer line
Tip:
To advance trimmer line, tap trimmer head against the ground while the head
is turning at normal operating speed.
Nylon line replacement
See Maintenance Section for Loading Trimmer Line.
Remove nylon line head
NOTE
Do not disassemble nylon line head.
1. Align locking hole in upper plate with notch in edge of gear housing and
insert head locking tool (D).
2. Remove line head (E) by turning it clockwise until head is completely off of
shaft.
3. Remove locking tool (D).
D
E
WARNING!
A standard grass trimmer with a loop handle should NEVER be operated with blade-type attachments. For
blade use, the trimmer must be tted with a bicycle-type handlebar or a barrier bar that is located in front of the operator to reduce the risk of the operator from coming in contact with the cutting attachment (per ANSI B175.3). When
using a blade, the unit must also be equipped with a harness or strap.
7
Front handle installation
NOTE
Label shows minimum spacing for front handle location.
1. Position front handle for comfortable operation and secure screws.
Adjust throttle lever free play
The throttle lever free play should be approximately 4 - 6 mm (3/16” 1/4”). Make sure that the throttle lever operates smoothly without binding.
If it becomes necessary to adjust the lever free play, follow the procedures
and illustrations that follow.
Loosen the air cleaner cover knob(s) and remove the air cleaner cover.1.
Loosen the lock nut on the cable adjuster. Turn the cable adjuster in or 2.
out as required to obtain proper free play 4 - 6 mm.
Tighten the locknut.3.
Reinstall the air cleaner cover.4.
Throttle lever free play
4-6 mm
(3/16”-1/4”)
Throttle Free Play
Remove air cleaner cover
Cable
Adjuster
8
Mixing Fuel
WARNING!
Alternative fuels, such as E15 (15% ethanol), E-85 (85% ethanol) or any fuels not meeting Shindaiwa
requirements are NOT approved for use in Shindaiwa gasoline engines. Use of alternative fuels may cause
performance problems, loss of power, overheating, fuel vapor lock, and unintended machine operation, including,
but not limited to, improper clutch engagement. Alternative fuels may also cause premature deterioration of fuel
lines, gaskets, carburetors and other engine components.
Fuel Requirements
Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be good quality. Gasoline may contain
up to 10% Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing methanol (wood
alcohol) is NOT approved.
Hybrid 4TM Mixture Oil - Engine oil meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345/FD standards must be
used. Shindaiwa highly recommends using Shindaiwa Red ArmorTM engine oil in all Shindaiwa Hybrid 4TM engines to
protect the engine from harmful carbon build up, maintain engine performance, and increase engine life. Shindaiwa
Red ArmorTM engine oil exceeds ISO-L-EGD and J.A.S.O. M345/FD performance requirements. Engine problems
due to inadequate lubrication caused by failure to use an ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345/FD certied
oil will void the engine warranty.
IMPORTANT!
Shindaiwa Red Armor
in all Shindaiwa engines sold in the past, regardless of ratio specied in those
manuals.
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. Use of unmixed, improperly mixed, or stale fuel, may cause hard starting, poor performance, or severe
engine damage and void the product warranty. Read and follow instructions in
the Long Term Storage section of this manual.
TM
engine oil may be mixed at 50:1 ratio for application
IMPORTANT!
Examples of 50:1 mixing quantities
Handling Fuel
DANGER
Fuel is VERY ammable. 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 ames 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 ll fuel tanks indoors. ALWAYS ll fuel tanks outdoors over bare ground.
• DO NOT overll 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.
9
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