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SHINDAIWA OWNER’S/OPERATOR’S MANUAL
T344 TRIMMER
WARNING!
Minimize the risk of injury to yourself and
others! Read this manual and familiarize yourself
with the contents. Always wear eye and hearing pro-
tection when operating this unit.
X7502831200
05/10
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Introduction 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-perfor- mance 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! IMPORTANT! The information c
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Warning and Operational Labels WARNING: Surface can be hot. Al- Make sure no one is within ways wear gloves when handling Read and follow this operator's 50FEET 15 M / 50 feet of an operating (15m) this unit. manual. Failure to do so could machine. result in serious injury.. HOT SURFACE Beware of thrown or Wear eye and hearing protection richocheted objects at all times during operation of this unit. Wear head protection where there is a risk of falling objects. Safety Work Safely Trim
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Safety Labels READ THE OPERATOR’SMANUAL HOT SURFACE WEAR HEARINGAND ANSI Z87.1 APPROVED EYEPROTECTION 50FEET (15m) KEEP BYSTANDERSAWAY ATLEAST50 FEET(15m) BEWAREOFTHROWN OR RICOCHETED OBJECTS This label indicates the minimum distance between front handle and rear grip per ANSI B175.3. DO NOTOPERATETHIS MACHINEWITH A BLADE ShindaiwaInc. 19422-00028 IMPORTANT! Safety and Operation Information Labels: Make sure all information labels are undamaged and readable. Immediately replace damaged or mis
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Be Aware of the Working Environment Make sure bystanders Reduce the risk of bystanders being or observers struck by flying debris. Make sure no outside the one is within 15 meters (50 feet)— Avoid long-term 15 meter (50 that’s about 16 paces of an operating operation in very hot feet) “danger attachment. Stop immediately if a child, or very cold weather. zone” wear eye pet, or person comes within a 15 meter protection. (50 feet)radius. Outside this radius, there is still a risk of inj
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Specifica tions Engine Name T344 Engine Type 4-cycle, vertical cylinder, air cooled Dry Weight (Without guard and strap) 5.9 kg/13.0 lb. Bore x Stroke 38 x 30 mm (1.5 x 1.2 in.) Displacement 34 cc (2.1 cu. in.) Fuel/Oil Ratio 50:1 with *ISO-L-EGD or JASO FD class engine oil Fuel Tank Capacity 700 ml (23.7 oz.) Carburetor Type Diaphragm-type carburetor Ignition One-piece electronic, program-controlled Spark Plug** NGK CMR5H Spark Plug Gap 0.6 mm (0.024 in) Torque 16.7 - 18.6 N∙m (148-165 in •
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Cutting attachment shield CAUTION A Wear Gloves or personal injury may result: • Cutoff knife is sharp. • Gearcase and surrounding area may be hot. NOTE The plastic shield is for use with the Nylon Line Head only. Install Metal B Shield when using plastic or metal blades. 1. Remove plastic threaded shaft sleeve and adapter plate (C) from PTO C shaft (A). 2. Place the shield on the bottom of the bearing housing flange. 3. Place shield plate (B) on shield, align holes. Install three (3) sc
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Front handle installation NOTE Label shows minimum spacing for front handle location. 1. Position front handle for comfortable operation and secure screws. Adjust throttle lever free play The throttle lever free play should be approximately 4 - 6 mm (3/16” - 1/4”). Make sure that the throttle lever operates smoothly without binding. If it becomes necessary to adjust the lever free play, follow the procedures and illustrations that follow. 4-6 mm (3/16”-1/4”) Throttle Free Play Throttle lev
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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. Alternative fuels may also cause premature deterioration of fuel lines, gaskets, carburetors and other engi
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Mixing Instructions Storage - Fuel storage laws vary by locality. Contact 1. Fill an approved fuel container with half of the required your local government for the laws affecting your area. amount of gasoline. As a precaution, store fuel in an approved, airtight con- 2. Add the proper amount of engine oil to gasoline. tainer. Store in a well-ventilated, unoccupied building, 3. Close container and shake to mix oil with gasoline. away from sparks and flames. 4. Add remaining gasoline, clos
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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! Never start the engine from the operating position. 1. Slide the ignition switch to the “ON” position. Throttle Interlock 2. Set the throttle trigger to the “fast idle”: ON a. Depress and hold the throttle interlock, then squeeze and hold the throttle trigger. b. Depress and hold the fast idle button. Fast Idle c
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6. When the engine starts, slowly move the choke lever to the “OPEN” posi- tion. (If the engine stops after the initial start, close the choke and restart.) 7. Operating the throttle will automatically disengage the fast idle setting. Open IMPORTANT! If the engine fails to start after several attempts with the choke in the closed position, the engine may be flooded with fuel. If flooding is suspected, refer to the ”Starting a Flooded Engine” section of this manual. After engine starts, move ch
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Operation WARNING Engine exhaust IS HOT, and contains Carbon Monoxide (CO), a poison gas. Breathing CO can cause uncon- sciousness, serious injury, or death. Exhaust can cause serious burns. ALWAYS position unit so that exhaust is directed away from your face and body. Cutting grass with a trimmer head Your Shindaiwa unit may be equipped with one of several Shindaiwa trimmer head models, each with features for specific applications and/or operational requirements. NOTE: For proper oper
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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 PER- FORMANCE AND DURABILITY TO AUTHORIZED PARTS MAY IMPAIR THE EFFECTIVENESS OF THE EMISSION CON- TROL SYSTEM AND MAY HAVE A BEARING ON THE OUTCOME OF A WARRANTY CLAIM. NOTE: Us
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Maintenance (continued) 10-Hour maintenance (more frequently in dusty Loosen fasteners conditions) 1. Remove the air filter cover by loos- ening 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. Filter element 3. Clean the pre-filter with soap and 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 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 of contamination, replace with a genuine Shindaiwa replacement fuel filter element. ■ Before reinstalling the new filter ele- ment, inspect the condition of all the fuel system components (fuel pick- up line, fuel return line, tank vent line, tank vent, fuel cap and fuel tank).
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Maintenance (continued) 135-Hour Maintenance ■ Replace the spark plug annually: ■ Combustion chamber should be Use only the type recommended in decarbonized, and the valve clear- the ”Specifications” section or an ance should be adjusted. It is equivalent resistor type spark plug highly recommended that this is of the correct heat range. Set spark done by a Shindaiwa-trained ser- plug electrode gap to 0.6 mm. vice technician. IMPORTANT! The valve clearance should be adjusted. It is hig
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Maintenance (continued) Spark Arrester Screen Maintenance If the engine becomes sluggish and low on power, check and clean the spark arrester screen. Engine Cover WARNING! Engine Cover Never operate the unit with a Screws damage or missing muffler or spark arrester! Operating with a missing or damaged spark arrester is a fire hazard and could also damage your hearing. 1. With a 3 mm hex wrench remove the Muffler engine cover screws and the engine Muffler Gasket cover. 2. With a 4 mm
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Maintenance (continued) Adjusting Engine Idle The engine must return to idle speed whenever the throttle lever is released. Idle speed is adjustable, and must be set low enough to permit the engine Idle clutch to disengage the cutting attachment. Ajust- ment Screw WARNING! The cutting attachment must NEVER rotate at engine idle! If the idle speed cannot be adjusted by the procedure described here, return the unit to your Shindaiwa dealer for inspection. Idle Speed Adjustment 1. Place the uni
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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. Refill 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 classified oils at 50:1 gasoline/oil ratio. Valve adjustment. Valve clearance too tight. Consult with an authorized Shindaiwa servicing dealer. Adjust v
