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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!

Introduction

Throughout this manual are special “attention statements”.

Attention Statements

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.

CAUTION!

A statement preceded by the word “CAUTION” 

contains information that should be acted upon to 

prevent mechanical damage.

IMPORTANT!

A statement preceded by the word “IMPORTANT” is 

one that possesses special significance.

NOTE:

A statement preceded by the word “NOTE” contains 

information that is handy to know and may make your job 

easier.

 

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.

ECHO, Inc. reserves the right to make changes to products without prior notice, and without obligation to make alterations to 

units previously manufactured.

IMPORTANT!

The information contained in these instructions describes units available at the time of publication.

Contents

PAGE

PAGE

IMPORTANT!

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.

WARNING!

The engine exhaust from this product contains chemicals known to the State of California to cause cancer,    

 

birth defects, or other reproductive harm.

Safety ................................................... 3

Product Description .............................. 5

Specifications

 ....................................... 6

Emission Control .................................. 6

Assembly .............................................. 6

Mixing fuel ............................................ 8

Filling the fuel tank................................ 9

Starting the Engine  ............................ 10

Stopping the Engine ............................11

Checking Unit Condition ..................... 12

Operation ............................................ 12

Maintenance ....................................... 13

Long Term Storage ............................. 19

Troubleshooting Guide ....................... 20

Warranty  ............................................ 23

Servicing Information .......................... 28

Summary of Contents for T254

Page 1: ...NER S OPERATOR S MANUAL 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 thi...

Page 2: ...formation that should be acted upon to prevent serious injury or death ECHO Inc reserves the right to make changes to products without prior notice and without obligation to make alterations to units...

Page 3: ...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 ALWAYS inspect unit before each use Repla...

Page 4: ...st high Wear appropriate footwear non skid boots or shoes do not wear open toed shoes or sandals Never work barefooted Keep a proper footing and do not overreach Maintain your balance at all times dur...

Page 5: ...feet radius Outside this radius there is still a risk of injury from thrown objects ALWAYS clear your work area of trash or hidden debris that could be thrown back at you or toward a bystander When op...

Page 6: ...ont and rear refer to directions as viewed by the operator during normal operation Engine Outer tube assembly Cutting attachment shield Cutting Attachment Cutting attachment shield mounting plate and...

Page 7: ...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 locki...

Page 8: ...ailure to use an ISO L EGD ISO CD 13738 and J A S O M345 FD certified oil will void the engine warranty Front handle installation NOTE Label shows minimum spacing for front handle location 1 Position...

Page 9: ...sh fuel 4 Reinstall the fuel filler cap and tighten firmly 5 Wipe away any spilled fuel before starting engine CAUTION Slowly remove the fuel cap only after stopping the engine After use DO NOT store...

Page 10: ...e primer system only pushes fuel through the carburetor Repeatedly pressing the primer bulb will not flood the engine with fuel 3 Press the primer bulb until fuel can be seen flowing in the transparen...

Page 11: ...of this manual 6 When the engine starts slowly move the choke lever to the OPEN position If the engine stops after the initial start close the choke and restart 7 Operating the throttle will automatic...

Page 12: ...h broken or damaged equipment Checking Unit Condition NEVER allow the engine to run at high RPM without a load Doing so could damage the engine NEVER operate a unit with worn or damaged fasteners or a...

Page 13: ...s trimmer head from left to right Keep the trimmer head horizontal Engine Operating Speeds Operate at full throttle while cutting grass Trimming and Mowing Grass Edging Tilt the handle about 100 to th...

Page 14: ...a at base of crankcase Remove all debris Dirt build up in these areas can lead to engine overheating fire or premature wear Daily maintenance Clean any debris or dirt from the cutting attachment Remov...

Page 15: ...Use a hooked wire to extract the fuel filter from inside the fuel tank Inspect the fuel filter element If it shows signs of contamination replace with a genuine Shindaiwa replacement fuel filter eleme...

Page 16: ...ew clockwise tighter counterclockwise looser until feeler gauge is almost snug Back off just enough to allow gauge to slip out with limited resistance 5 While holding the adjustment screw in place wit...

Page 17: ...ized Shindaiwa dealer IMPORTANT If the engine is adjusted for operation above 1 100 feet ASL the carburetor must be re adjusted when operating the engine below 1 100 feet ASL otherwise severe engine d...

Page 18: ...ust idle Check Specifications page for correct idle speed Loading Trimmer Line 1 Cut one piece of line to recommended length 2 Align arrows on top of knob with openings in eyelets 3 Insert one end of...

Page 19: ...linder through the spark plug hole Slowly pull the recoil starter 2 or 3 times so oil will evenly coat the interior of the engine Reinstall the spark plug Before storing the unit repair or replace any...

Page 20: ...lter and or vent Priming pump not functioning properly The ignition switch is in O OFF position Shorted ignition ground Faulty ignition unit If the plug is wet excess fuel may be in the cylinder The p...

Page 21: ...d oils at 50 1 gasoline oil ratio Clean repair or replace as necessary Consult with an authorized Shindaiwa servicing dealer Service the air cleaner element Tighten or replace the spark plug Check the...

Page 22: ...red Replace the spark plug Check the Specifications section for the correct plug and gap for your unit Restart Idle engine until cool Symptom Possible Cause Remedy Engine stops abruptly Engine difficu...

Page 23: ...oncerning Shindaiwa s Warranty Statement you can contact our Consumer Product Support Department at 1 800 673 1558 or contact us through the web at WWW SHINDAIWA COM PRODUCT WARRANTY PERIOD homeowner...

Page 24: ...he operator s manual is the customer s responsibility Failures due to improper set up pre delivery service or repair service by anyone other than authorized Shindaiwa servicing dealer during the warra...

Page 25: ...never be sold or misused by ECHO Inc Registering your purchase enables us to contact you in the unlikely event of a service update or product recall and verifies your ownership for warranty considera...

Page 26: ...26 NOTES...

Page 27: ...27 NOTES...

Page 28: ...7 986 7783 Dealer information is also available on WWW SHINDAIWA USA COM When presenting your unit for War ranty service repairs proof of purchase is required Consumer Product Support If you require a...

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