T344 TRIMMER - Shindaiwa USA

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Troubleshooting Guide (continued)LOW POWER OUTPUTWhat To Check Possible Cause RemedyIs the engine overheating?Operator is overworking the unit.Carburetor mixture is too lean.Use a lower throttle setting.Consult with an authorized Shindaiwaservicing dealer.Improper fuel ratio.Refill with fresh, clean unleaded gasoline with a pump octaneof 89 or higher mixed with an air cooled engine oil that meetsor exceeds ISO-L-EGD and/or JASO FD classified oils at 50:1gasoline/oil ratio.Fan, fan cover, cylinder fins dirtyor damaged.Carbon deposits on the piston orin the muffler.Clean, repair or replace as necessary.Consult with an authorized Shindaiwaservicing dealer.Engine is rough at allspeeds. May also haveblack smoke and/orunburned fuel at theexhaust.Clogged air cleaner element.Loose or damaged spark plug.Air leakage or clogged fuel line.Water in the fuel.Piston seizure.Faulty carburetor and/or diaphragm.Service the air cleaner element.Tighten or replace the spark plug.Check the Specifications section for the correct plug and gapfor your unit.Repair or replace fuel filter and/orfuel line.Refill with fresh, clean unleaded gasoline with a pump octaneof 89 or higher mixed with an air cooled engine oil that meetsor exceeds ISO-L-EGD and/or JASO FD classified oils at 50:1gasoline/oil ratio.Consult with an authorized Shindaiwa servicing dealer.Engine is knocking.Overheating condition.Improper fuel.Carbon deposits in thecombustion chamber.Consult with an authorized Shindaiwaservicing dealer.Refill with fresh, clean unleaded gasoline with a pump octaneof 89 or higher mixed with an air cooled engine oil that meetsor exceeds ISO-L-EGD and/or JASO FD classified oils at 50:1gasoline/oil ratio.Consult with an authorized Shindaiwaservicing dealer.22
Troubleshooting Guide (continued)ADDITIONAL PROBLEMSSymptom Possible Cause RemedyPoor acceleration.Clogged air filter.Clogged fuel filter.Clean the air filter.Replace the fuel filter.Lean fuel/air mixture.Idle speed set too low.Consult with an authorized Shindaiwaservicing dealer.Adjust idle. Check Specifications page for correct idle speed.Engine stops abruptly.Engine difficult to shut off.Ignition switch turned off.Fuel tank empty.Water in the fuel.Clogged fuel filter.Shorted spark plug or loose terminal.Ignition failure.Piston seizure.Ground (stop) wire is disconnected,or switch is defective.Overheating due to incorrect spark plug.Overheated engine.Reset the switch and re-start.Refill with fresh, clean unleaded gasoline with a pump octaneof 89 or higher mixed with an air cooled engine oil thatmeets or exceeds ISO-L-EGD and/or JASO FD classified oilsat 50:1 gasoline/oil ratio.Replace fuel filter.Clean or replace spark plug. Check the Specifications sectionfor the correct plug and gap for your unit. Tightenthe terminal.Replace the ignition unit.Consult with an authorized Shindaiwaservicing dealer.Test and replace as required.Replace the spark plug. Check the Specifications section forthe correct plug and gap for your unit. Restart.Idle engine until cool.Top of engine is gettingdirty and oily.Valve cover is leaking.Consult with an authorized Shindaiwaservicing dealer.Engine will not idledown.Cutting attachmentmoves at engine idle.Idle set too high.Engine has an air leak.Engine idle too high.Broken clutch spring or worn clutchspring boss.Adjust idle. Check Specifications page for correctidle speed.Consult with an authorized Shindaiwa servicingdealer.Adjust idle. Check Specifications page for correct idlespeed.Replace spring/shoes as required, check idle speed.Excessive vibration.Loose attachment holder.Warped or damaged attachment.Loose gearcase.Bent main shaft/worn or damaged bushings.Inspect and re-tighten holders securely.Inspect and replace attachment asrequired.Tighten gearcase securely.Inspect and replace as necessary.Shaft not installed in powerhead or gearcase.Inspect and reinstall as required.Cutting attachment will notmove.Broken shaft.Damaged gearcase.Consult with an authorized Shindaiwa servicingdealer.23
Page 3 and 4: SafetyWork SafelyTrimmers and brush
Page 5 and 6: Be Aware of the Working Environment
Page 7 and 8: Cutting attachment shieldCAUTIONWea
Page 9 and 10: Mixing Fuel (continued)Fuel Require
Page 11 and 12: Starting the Engine (continued)3. P
Page 13 and 14: Operation (continued)WARNING!Operat
Page 15 and 16: Maintenance (continued)10-Hour main
Page 17 and 18: Maintenance (continued)135-Hour Mai
Page 19 and 20: Maintenance (continued)Adjusting En
Page 21: Troubleshooting GuideVaporlock.Valv
Page 25 and 26: PURCHASED REPAIR PARTS AND ACCESSOR
Page 27 and 28: NOTES27

T344 TRIMMER - Shindaiwa USA

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