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13

Idle the engine briefly before stopping (about 2 minutes), then slide the ignition 

switch to the “

O

” (Engine OFF) position.

Stopping the Engine

Checking Unit Condition

ALWAYS

 make sure the cutting 

attachment fits properly into the 

appropriate attachment holder. If a 

properly installed attachment vibrates, 

replace the attachment with new one 

and re-check. 

ALWAYS

 stop the engine immediately 

and check for damage if you strike a 

foreign object or if the unit becomes 

tangled. Do not operate with broken or 

damaged equipment.

NEVER

 allow the engine to run at high 

speeds without a load. Doing so could 

damage the engine.

NEVER

 operate a unit with worn or 

damaged fasteners or attachment 

holders.

NEVER

 operate the unit with the 

protective devices removed!
Use only authorized Shindaiwa parts and 

accessories with your Shindaiwa hedge 

trimmer. Do not make modifications to 

this unit without written approval from 

Shindaiwa.

ALWAYS

 make sure the cutting 

attachment is properly installed and 

firmly tightened before operation.

NEVER

 use a cracked or warped cutting 

attachment: replace it with a serviceable 

one.

Starting the engine (continued)

WARNING!

The cutting attachment can 

continue moving after the engine is 

stopped!

 

After the engine starts, allow the 

engine to warm up at idle 2 or 3 

minutes before operating the unit.

 

If the engine does not continue 

to run, repeat the appropriate 

cranking procedures for a cold or 

warm engine. When the engine 

starts, clear excess fuel from 

the combustion chamber by 

accelerating the engine several 

times with the throttle trigger.

When the Engine Starts...

 

Advancing the throttle makes the 

cutting attachment move faster; 

releasing the throttle permits the 

attachment to stop moving. If the 

cutting attachment continues to 

move when the engine returns to 

idle, carburetor idle speed should 

be adjusted (see “Adjusting Engine 

Idle”).

If the engine does not start

 

Repeat the appropriate starting 

procedure for a cold or warm 

engine.

 

If the engine still fails to start, use 

the procedures for “Starting a 

flooded engine.”

WARNING!

Burn danger from hot engine!

Starting a flooded engine

1.  Slide the ignition switch to the “

I

” (ON) position.

2.  Open the choke, put the throttle trigger in the full throttle position, then clear excess fuel from the combustion chamber by 

cranking the engine several times.

3. 

If the engine still fails to start or fire, refer to the troubleshooting flow chart at the end of this manual.

WARNING!

A cutting attachment shield 

or other protective device is no 

guarantee of protection against 

ricochet. YOU MUST ALWAYS 

GUARD AGAINST FLYING DEBRIS!

Slide ignition to OFF

OFF

Summary of Contents for AH254

Page 1: ...NDAIWA OWNER S OPERATOR S MANUAL WARNING Always wear eye and ear protection when operating this machine To minimize the risk of injury to yourself and others read this manual and familiarize yourself...

Page 2: ...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 regar...

Page 3: ...nders if misused abused or mishandled To reduce the risk of injury you must maintain control at all times and observe all safety precautions during operation Never permit a person without training or...

Page 4: ...tened before operation Inspect for broken missing or improperly installed parts or attachments Never use a cracked or warped cutter or cutter bar replace it with a serviceable one and make sure it fit...

Page 5: ...hat to reduce the risk of head injuries during operation of this machine Always wear eye and hearing protection Shindaiwa recommends wearing a face shield as additional face and eye protection Keep a...

Page 6: ...19 mm 20 4 in Clutch Type Automatic centrifugal clutch with bevel gear Gear Type Spur gears Gear Lubrication Lithium based grease Standard Equipment Tool kit blade scabbard Idle Speed 3 000 RPM Clutch...

Page 7: ...ed by trimming without the blade guard Blade Guard Removal Install An Emission Control Label is located on the engine This is an EXAMPLE ONLY information on label varies by engine FAMILY PRODUCT EMISS...

Page 8: ...extension when removing lock nuts in order to keep hands at a safe distance from sharp blades 3 Remove four 4 lock nuts B 4 Install blade guard 5 Secure blade guard with four 4 lock nuts 6 Adjust blad...

Page 9: ...e positions possible Cutter Assembly Positions IMPORTANT The latch lock provides an interlock to help prevent inadvertent depression of the latch release Latch Release Adjustment Lever Press the latch...

Page 10: ...product warranty Read and follow instructions in the Long Term Storage section of this manual Fuel Requirements Gasoline Use 89 Octane R M 2 mid grade or higher gasoline known to be good quality Gasol...

Page 11: ...om around the fuel filler cap 3 Remove the fuel cap and fill the tank with clean fresh fuel 4 Reinstall the fuel filler cap and tighten firmly 5 Wipe away any spilled fuel before starting engine CAUTI...

Page 12: ...ke and restart Press the primer bulb Make sure the attachment is clear of obstructions and pull recoil starter handle upward Hold the unit firmly Slide the ignition switch to the ON position ON WARNIN...

Page 13: ...topped After the engine starts allow the engine to warm up at idle 2 or 3 minutes before operating the unit If the engine does not continue to run repeat the appropriate cranking procedures for a cold...

Page 14: ...tly in front of the hedge e g reach over a flower bed Cut close to the ground from a standing position e g for low shrubs WARNING Moving parts can amputate fingers or cause severe injuries Keep hands...

Page 15: ...4 stroke engine As a hybrid the engine is lubricated by oil mixed with the gasoline and air from the carburetor that moves through and around the internal parts of the engine in a similar way that a 2...

Page 16: ...air stream at the inside face of the filter only CAUTION Never operate the unit if the air cleaner assembly is damaged or missing Lubricate the cutter assembly gearcase by pumping one or two strokes o...

Page 17: ...ponents fuel pick up line fuel return line tank vent line tank vent fuel cap and fuel tank If damage splitting or deterioration is noted the unit should be removed from service until it can be inspect...

Page 18: ...mpression stroke TDC the valves can be adjusted 2 Loosen adjuster lock nut so that the 2 5 mm hex socket head adjustment screw can turn freely 3 Insert 0 10 mm 0 004 in feeler gauge between valve stem...

Page 19: ...machine depends a great deal on proper cutter blade adjustment Properly adjusted blades will oscillate freely yet help prevent binding of cut material between blades Adjust blades as follows 1 Loosen...

Page 20: ...ase and exhaust emissions will stabilize Idle speed can be adjusted as required High Altitude Operation This engine has been factory adjusted to maintain satisfactory starting emission and durability...

Page 21: ...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 22: ...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 23: ...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 24: ...or have questions concerning 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 WARRAN...

Page 25: ...lined in the 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...

Page 26: ...26 NOTES...

Page 27: ...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 28: ...28 NOTES...

Page 29: ...29 NOTES...

Page 30: ...30 NOTES...

Page 31: ...31 NOTES...

Page 32: ...is also available on WWW SHINDAIWA COM When presenting your unit for Warranty service repairs proof of purchase is required Consumer Product Support If you require assistance or have questions concer...

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