Shindaiwa AH254 Owner's/Operator's Manual

H4 series articulated hedge trimmer

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X7502872304
12/14
SHINDAIWA OWNER'S/OPERATOR'S MANUAL
AH254
ARTICULATED HEDGE TRIMMER
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 with its contents.

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Summary of Contents for Shindaiwa AH254

  • Page 1 SHINDAIWA OWNER’S/OPERATOR'S MANUAL AH254 ARTICULATED HEDGE TRIMMER 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 with its contents. X7502872304 12/14...
  • Page 2: Table Of Contents

    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 Shindaiwa 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 3: Safety

    10 M this machine. In addition, (33 feet) away from electrical always wear eye and hearing sources and power lines. protection. Shindaiwa WARNING ! Surface can recommends wearing a face be hot. Always wear gloves shield as additional face and when handling this unit.
  • Page 4: Operating Precautions

    ■ securely to prevent fuel spillage or Always use genuine Shindaiwa ■ damage to the machine. Keep the articulated hedge trimmer parts and accessories when as clean as possible. Keep it free repairing or maintaining this of loose vegetation, mud, etc.
  • Page 5: Operator Safety

    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. Operator Safety Always wear a hard hat This machine is designed ALWAYS clear your work area to reduce the risk of head for trimming hedges.
  • Page 6: Product Description

    2375 x 216 x 249 mm (93.5 x 8.5 x 9.8 in.) Fuel Tank Capacity 590 ml (20.1 oz.) Fuel/oil ratio 50:1 Shindaiwa Red Armor® ISO-L-EGD (ISO/CD 13738) and J.A.S.O. M345- FD, two-stroke, air-cooled engine oil. Carburetor Diaphragm type Ignition...
  • Page 7: Emission Control

    Blade Guard Removal/Install NOTE: For normal cutting, Shindaiwa strongly recommends the blade guard be installed. In extreme conditions, such as commercial cutting, or when cutting thick and/or dense branches, efficiency may be increased by trimming without the blade guard.
  • Page 8 Assembly (continued) Blade Guard Removal 1. Move stop switch to stop position. 2. Disconnect spark plug wire. WARNING! Hedge Trimmer blades are very sharp. Touching them may lead to severe personal injury. Use a socket and extension when removing lock nuts in order to keep hands at a safe distance from sharp blades.
  • Page 9 Assembly (continued) Latch Lock Adjustment Lever WARNING! Never run the engine when adjusting the cutter assembly. Make sure the latch lock and the latch release Latch Release return securely to the locked position Press the latch lock IMPORTANT! 3. While holding the latch release 1.
  • Page 10: Mixing Fuel

    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.
  • Page 11: Filling The Fuel Tank

    Mixing Instructions 1. Fill an approved fuel container with half of the required amount of gasoline. 2. Add the proper amount of engine oil to gasoline. 3. Close container and shake to mix oil with gasoline. 4. Add remaining gasoline, close fuel container, and remix. IMPORTANT! Spilled fuel is a leading cause of hydrocarbon emissions.
  • Page 12: Starting Engine

    Starting the Engine IMPORTANT! Engine ignition is controlled by a two position switch mounted on the throttle housing labeled, “I” for ON or START and “O” for OFF or STOP. NOTE: The blade cover is used for transportation and storage. Remove blade cover before using the unit. WARNING! Never start the engine from the operating position.
  • Page 13: Stopping The Engine

    Doing so could appropriate attachment holder. If a damage the engine. Use only authorized Shindaiwa parts and properly installed attachment vibrates, accessories with your Shindaiwa hedge NEVER operate a unit with worn or replace the attachment with new one trimmer.
  • Page 14: Operation

    Operation WARNING! 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. WARNING! Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a poison gas.
  • Page 15: Important

    Air Filter This unit must never be operated with a faulty or missing The H4 engine that powers your Shindaiwa model is a hybrid spark arrester or muffler. Make sure the muffler is well 4-stroke engine. As a hybrid, the engine is lubricated by oil secured and in good condition.
  • Page 16 Maintenance (continued) 10-Hour maintenance (more frequently in dusty Loosen conditions) fasteners 1. Remove the air filter cover by loosening the cover screw(s) and lifting. Pre-filter 2. Remove and inspect the pre-filter. If the pre-filter is torn or otherwise damaged, replace it with a new one.
  • Page 17 If damage, splitting or deterioration is noted, the unit should be removed Gearcase Clamp bolt Gearcase lubrication from service until it can be inspected or repaired by a Shindaiwa-trained service technician. Outer tube Gearcase lubrication To perform this operation, first remove...
  • Page 18 ”Specifications” section or an equivalent is highly recommended that this resistor type spark plug of the correct heat range. Set spark plug electrode gap to is done by a Shindaiwa-trained service technician. 0.6 mm (0.024 in.). Valve Adjustment 1. Remove cylinder cover, rocker arm cover, and spark plug.
  • Page 19 Maintenance (continued) Cutter blade adjustment 3. Working from the gearcase end, WARNING! Lock nut lock each bolt in place by firmly tightening its lock nut while The cutter blades are Guide Bar preventing the shoulder bolt from very sharp! Always wear gloves turning.
  • Page 20: Long Term Storage

    This engine has been factory adjusted to maintain satisfactory starting, emission, and durability performance up to 1,100 feet above sea level (ASL) (96.0 kPa). To maintain proper engine operation and emission compliance above 1,100 feet ASL the carburetor may need to be adjusted by an authorized Shindaiwa service 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 damage may result.
  • Page 21: Troubleshooting Guide

    Adjust valves. Valve clearance too loose. ENGINE DOES NOT START What To Check Possible Cause Remedy Consult with an authorized Shindaiwa servicing dealer. Faulty recoil starter. Does the engine crank? Fluid in the crankcase. Internal damage. Tighten and re-test.
  • Page 22 89 or higher mixed with an air cooled engine oil that meets or exceeds ISO-L-EGD and/or JASO FD classified oils at 50:1 gasoline/oil ratio. Piston seizure. Consult with an authorized Shindaiwa servicing dealer. Faulty carburetor and/or diaphragm. Overheating condition. Consult with an authorized Shindaiwa servicing dealer.
  • Page 23 Adjust idle. Check Specifications page for correct Idle set too high. Engine will not idle idle speed. down. Consult with an authorized Shindaiwa servicing Engine has an air leak. dealer. Adjust idle. Check Specifications page for correct idle Engine idle too high.
  • Page 24: Warranty Statements

    The owner shall demonstrate reasonable care and use, and follow preventative maintenance, storage, fuel and oil usage as pre- scribed in the operator’s manual. Should a product difficulty occur, you must, at your expense, deliver or ship your Shindaiwa unit to an authorized Shindaiwa servicing dealer for warranty repairs (within the applicable warranty period), and arrange for pick-up or return of your unit after the repairs have been made.
  • Page 25 89 octane or higher. Gasohol which contains a maximum 10% ethanol (grain alcohol) or 15% MTBE (methyl/tertiary/butyl/ether) is also approved. The prescribed mixing ratio of gasoline to oil is listed on the Shindaiwa oil label and covered in your operator’s manual.
  • Page 26 NOTES...
  • Page 27: Product Registration

    Thank you for choosing Shindaiwa Power Equipment Please go to http://www.shindaiwa-usa.com to register your new product on-line. It's FAST and EASY! NOTE: your information will 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 consideration.
  • Page 28 NOTES...
  • Page 29 NOTES...
  • Page 30 NOTES...
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  • Page 32: Servicing Information

    Genuine Shindaiwa Parts and Assemblies for your Shindaiwa products are available only from an Authorized Shindaiwa Dealer. When you do need to buy parts always have the Model Number, Type and Serial Number of the unit with you. You can find these numbers on the engine. For future reference, write them in the space provided be- low.

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