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X7502863800 04/10 SHINDAIWA OWNER / OPERATOR’S MANUAL DH231 HEDGE 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 protection when operating this unit.
If you have questions regarding your series of 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.
You must be physically and mentally fit to operate this unit safely. WARNING! Never make unauthorized attachment installations. Always use genuine Shindaiwa parts and accessories when repairing or maintaining this unit. WARNING! ■ Never smoke or light fires near the hedge trimmer.
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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. •...
Never modify or disable any of the unit’s safety devices. Always use genuine Shindaiwa parts and accessories when repairing or maintaining this machine. Do not make unauthorized modifica- tions to the unit.
Throttle interlock Recoil starter On/Off Switch Air filter Fuel tank DH231-24 2-cycle, horizontal cylinder, air cooled 32mm x 28mm (1.26 X 1.10 in) 22.5cc (1.37 in 5.8 kg (12.8 lb) 1080 x 250 x 210 mm (42.52 x 9.84 x 8.27 in) 0.53 liter (18.0 oz.)
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.
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. •...
Make sure the cutters are clear of obstructions! Pull recoil starter handle upward Start the trimmer by pulling the starting handle rapidly outward IMPORTANT! If the engine fails to start after sev- eral attempts with the choke in the closed position, the engine may be flooded with fuel.
Starting the engine (continued) When the motor starts... Open the choke by moving the choke lever backward (toward the fuel tank). If the engine does not continue to run, repeat the appropriate crank- ing procedures for a cold or warm engine.
HAVE A BEARING ON THE OUTCOME OF A WARRANTY CLAIM. Fasteners Make sure nuts, bolts, and screws (except carburetor adjusting screws) are tight. Using non-standard replacement parts could invalidate your Shindaiwa warranty. Daily maintenance Daily maintenance Prior to each work day, perform the...
Maintenance (continued) 10 - hour maintenance (more frequently in dusty conditions) Remove the air filter element, and wash the element in clean, neutral solvent or warm soapy water. Rinse the element thoroughly, and then squeeze dry before reassembly. CAUTION! Never operate the unit if the air filter assembly is damaged or missing or if the air filter element is soaked with water!
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Before reinstalling the filter, inspect the fuel line. If you discover dam- age or deterioration, the unit should be removed from service unitl it can be inspected by a Shindaiwa-trained service technician. CAUTION! Make sure you do not pierce the fuel line with the end of the hooked wire.
Remove two 4 mm screws from the top tail plate and remove tail plate. CAUTION! Operating the trimmer with worn or improperly adjusted cutters will reduce cutter performance and may also damage your machine. Never operate the machine with damaged or worn cutters.
(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. 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.
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. ENGINE DOES NOT START Possible Cause Consult with an authorized Shindaiwa servicing dealer. Faulty recoil starter. Fluid in the crankcase. Internal damage. Tighten and re-test.
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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. Consult with an authorized Shindaiwa servicing dealer. Consult with an authorized Shindaiwa servicing dealer.
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Restart. Idle engine until cool. Adjust idle. Check Specifi cations page for correct idle speed. Consult with an authorized Shindaiwa servicing dealer. Adjust idle. Check Specifi cations page for correct idle speed.
The owner shall demonstrate reasonable care and use, and follow preventative maintenance, storage, fuel and oil usage as prescribed 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.
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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.
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Authorized Dealer within 100 miles, ECHO Inc. will pay to ship the unit to the nearest authorized dealer. If you have questions regarding your warranty coverage, you should contact ECHO Inc. at 1-800-673-1558, web site WWW.ECHO-USA.COM or contact Shindaiwa at 1-877-986- 7783, web site WWW.SHINDAIWA.COM.
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 below.