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SHInDAIwA O wnER’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.
X7502872400
06/10
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Introduction The Shindaiwa H4 series of hand-held IMPORTAnT! wARnInG! power equipment is designed and built The information contained in these The engine exhaust from to deliver superior performance and reli- instructions describes units available at this product contains chemicals ability without compromise to quality, the time of publication. known to the State of California comfort, safety or durability. Shindaiwa engines represent the leading edge to cause cancer, birth defects
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Be aware of the danger of This product conducts elec- Always wear a hard hat to falling debris. tricity. Keep the product and/ reduce the risk of head inju- or operator a minimum dis- ries during operation of this 33 ft 10 M tance of 33 feet (10 meters) machine. In addition, always away from electrical sources wear eye and hearing protec- and power lines. tion. Shindaiwa recommends WARNING !Surface can be hot. Always wear wearing a face shield as addi- tional face and eye protection. glo
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Safety (continued) WARNING! Hedge Clipper blades are very sharp. Touching them may lead to severe personal injury. Avoid touching blades whenever possible, and always wear gloves to protect hands CAUTIOn! ■ Do not make unauthorized modi- ■ Always stop the engine and allow fications to the articulated hedge it to cool before refueling. Avoid ■ Always maintain the articu- trimmer or its components. overfilling and wipe off any fuel lated hedge trimmer according that may have spilled. ■ Keep
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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. Do of trash or hidden debris that injuries during operation of not use this machine for could be thrown back at you or this machine. other purposes. toward a bystander. Always wear eye and hearing protection. ALWAYS protect Shindaiwa recommends wearing a yourself from hazards face shield as additional face and eye such as thorny brush protecti
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Specifications Model AH254 Engine Type 4-cycle, vertical cylinder, air cooled Engine Bore x Stroke 34 x 27 mm/1.3 x 1.1 in. Engine Displacement 24.5cc/1.5 cu. in. Unit Weight, Less Fuel 6.3 kg/14 lbs. Unit Dimensions (LxWxH) 2360 x 225 x 235 mm / 92.9 x 8.9 x 9.3 in. Fuel Tank Capacity 590 ml/20.3 oz.. Fuel/oil ratio 50:1 with *ISO-L-EGD or JASO FD class engine oil Carburetor Diaphragm type Ignition Fully electronic, program controlled Spark Plug** NGK CMR5H Electrode Gap 0.6 mm/ .024 in. Tor
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Assembly Prior To Assembly IMPORTAnT! ■ Kit with this manual and tool kit Before assembling, make sure you have for routine maintenance. The terms “left”, “left-hand”, and “LH”; all the components required for a com- “right”, “right-hand”, and “RH”; “front” and ■ Cutter blade cover plete unit: “rear” refer to directions as viewed by the Carefully inspect all components for ■ Unit assembly operator during normal operation. damage. Adjusting the Hedge Trimmer Cutter Assembly Adjustment Leve
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Assembly (continued) Throttle lever free play The throttle lever free play should be approximately 4 - 6 mm. Make sure that the throttle lever operates smoothly with- out binding. If it becomes necessary to adjust the lever free play, follow the pro- cedures and illustrations that follow. 4 - 6 mm 1. Loosen the air cleaner cover knob(s) Cable and remove the air cleaner cover. Adjuster Throttle lever free play 2. Turn the cable adjuster in or out as required to obtain proper free play
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Handling Fuel DANGER Fuel is VERY flammable. 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 flames 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 fill fuel tanks indoors. ALWAYS fill fuel tanks outdoors over bare ground. • DO NOT ove
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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. WARNING The attachment will operate immediately when the engine starts, and could result in possible serious injury. Keep movable parts of the attachment away from objects that could become entangled or thrown, and surfaces that could cause loss of con- trol. wARnInG! Never start the engine from the operating positio
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Starting the Engine (continued) 6. When the engine starts, slowly CAUTIOn! move the choke lever to the “OPEN” position. (If the engine Do not pull the recoil starter to the stops after the initial start, close the end of the rope travel. Pulling the Open choke and restart.) recoil starter to the end of the rope 7. Operating the throttle will automati- travel can damage the starter. cally disengage the fast idle setting. IMPORTAnT! If the engine fails to start after several attempts with
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Checking Unit Condition NEVER operate the unit with the cut- ALWAYS make sure the cutting attach- NEVER operate a unit with worn or dam- ting attachment shield or other protec- ment fits properly into the appropriate aged fasteners or attachment holders. tive devices removed! attachment holder. If a properly installed attachment vibrates, replace the attach- Use only authorized Shindaiwa parts and wARnInG! ment with new one and re-check. accessories with your Shindaiwa trimmer. A cutting atta
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Maintenance General maintenance IMPORTAnT! MAINTENANCE, REPLACEMENT OR REPAIR OF EMISSION CONTROL DEVICES AND SYSTEMS MAY BE PERFORMED BY ANY REPAIR ESTABLISHMENT OR INDIVIDUAL; HOWEVER, WARRANTY REPAIRS MUST BE PERFORMED BY A DEALER OR SERVICE CENTER AUTHORIZED BY ECHO,INC. THE USE OF PARTS THAT ARE NOT EQUIVALENT IN PERFORMANCE AND DURABILITY TO AUTHORIZED PARTS MAY IMPAIR THE EFFECTIVENESS OF THE EMISSION CONTROL SYSTEM AND MAY HAVE A BEARING ON THE OUTCOME OF A WARRANTY CLAIM. nOTE: Usin
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Maintenance (continued) 10-Hour maintenance (more frequently in dusty condi- Loosen fasteners tions) 1. Remove the air filter cover by loosen- ing the cover screw(s) and lifting. Prefilter 2. Remove and inspect the pre-filter. If the pre-filter is torn or otherwise damaged, replace it with a new one. 3. Clean the pre-filter with soap and Filter element water. Let dry before reinstalling. 4. Inspect the air filter element. If the element is damaged or distorted, replace it with a new one.
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Maintenance (continued) 50-hour maintenance Every 50 hours of operation; more frequently in dusty conditions: ■ Remove and clean the cylinder cover and clean dirt and debris from the cylinder cooling fins. Hooked wire Remove and replace the fuel filter element. ■ Use a hooked wire to extract the fuel filter from inside the fuel tank. Inspect the fuel filter element. If it shows signs Fuel filter element of contamination, replace with a genu- Fuel filter maintenance ine Shindaiwa replaceme
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Maintenance (continued) 135-Hour Maintenance ■ Combustion chamber should be ■ Replace the spark plug annually: decarbonized, and the valve clear- Use only the type recommended in ance should be adjusted. It is highly the ”Specifications” section or an recommended that this is done equivalent resistor type spark plug by a Shindaiwa-trained service of the correct heat range. Set spark technician. plug electrode gap to 0.6 mm. Valve Adjustment 1. Remove cylinder cover, rocker arm cover, and
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Maintenance (continued) Cutter blade adjustment 3. Working from the gearcase end, lock Locknut wARnInG! each bolt in place by firmly tighten- The cutter blades are Guide Bar ing its locknut while preventing the very sharp! Always wear gloves shoulder bolt from turning. when working around the cutter assembly. CAUTIOn! Cutting performance of your machine Operating the trimmer with worn depends a great deal on proper cut- or improperly adjusted cutters will ter blade adjustment. Properly a
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Carburetor Adjustment Engine Break-In New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor adjustments can be made. During the break-in period your engine performance will increase 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 performance up to 1,100 feet above sea level (ASL) (96.0 kPa). To maintai
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Troubleshooting Guide EnGInE DOES nOT START OR HARD TO START Remedy Possible Cause What To Check Let cool completely and restart. Engine hot/heat soaked. Vaporlock. Refi ll with fresh, clean unleaded gasoline with a pump octane Low fuel quality. 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. Valve adjustment. Valve clearance too tight. Consult with an authorized Shindaiwa servicing dealer. Adjust
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Troubleshooting Guide (continued) Troubleshooting Guide (continued) ADDITIOnAL PROBLEMS LOw POwER OUTPUT Possible Cause Remedy Symptom Clogged air fi lter. Clean the air fi lter. What To Check Remedy Possible Cause Poor acceleration. Operator is overworking the unit. Use a lower throttle setting. Clogged fuel fi lter. Replace the fuel fi lter. Is the engine overheating? Carburetor mixture is too lean. Consult with an authorized Shindaiwa Lean fuel/air mixture. Consult with an authorized Shindaiw
