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ADDITIONAL PROBLEMS

Poor acceleration.

Clogged air fi lter.

Clogged fuel fi lter.

Lean fuel/air mixture.

Idle speed set too low.

Ignition switch turned off.

Fuel tank empty.

Water in the fuel.

Clogged fuel fi lter.

Shorted spark plug or loose terminal.

Ignition failure.

Piston seizure.

Ground (stop) wire is disconnected, 

or switch is defective.

Overheating due to incorrect spark plug.

Overheated engine.

Clean the air fi lter.

Replace the fuel fi lter.

Consult with an authorized Shindaiwa

servicing dealer.

Adjust idle. Check 

Specifi cations

 page for correct idle speed.

Reset the switch and re-start.

Refi ll with fresh, clean unleaded gasoline with a pump octane 

of 89 or higher mixed with an air cooled engine oil that 

meets or exceeds ISO-L-EGD and/or JASO FD classifi ed oils 

at 50:1 gasoline/oil ratio.

Replace fuel fi lter.

Clean or replace spark plug. Check the 

Specifi cations

 section 

for the correct plug and gap for your unit.  Tighten

the terminal.

Replace the ignition unit.

Consult with an authorized Shindaiwa

servicing dealer.

Test and replace as required.

Replace the spark plug. Check the Specifi cations section for 

the correct plug and gap for your unit. Restart.

Idle engine until cool.

Symptom

Possible Cause

Remedy

Engine stops abruptly.

Engine diffi cult to shut off.

Troubleshooting Guide 

(continued)

Valve cover is leaking.

Consult with an authorized Shindaiwa 

servicing dealer.

Top of engine is getting 

dirty and oily.

Engine idle too high.

Broken clutch spring or worn clutch 

spring boss.

Loose attachment holder.

Warped or damaged attachment.

Loose gearcase.

Cutting attachment 

moves at engine idle.

Excessive vibration.

Cutting attachment will not 

move.

Adjust idle. Check Specifi cations page for correct idle 

speed.
Replace spring/shoes as required, check idle speed.

Inspect and re-tighten holders securely.

Inspect and replace attachment as 

required.
Tighten gearcase securely.

Bent main shaft/worn or damaged bushings.

Shaft not installed in powerhead or gearcase.

Broken shaft.
Damaged gearcase.

Inspect and replace as necessary.

Inspect and reinstall as required.

Idle set too high.

Adjust idle. Check Specifi cations page for correct 

idle speed.

Engine will not idle 

down.

Engine has an air leak.

Consult with an authorized Shindaiwa servicing 

dealer.

Consult with an authorized Shindaiwa servicing 

dealer.

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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