Makita EM4351UH Original Instruction Manual

Also see for EM4350LH: Instruction manual Original instruction manual Original instruction manual Original instruction manual Original instruction manual

Contents

Makita EM4351UH Original Instruction Manual Manual pdf 27 page image

27TROUBLESHOOTINGBefore making a request for repairs, check for trouble by yourself. If any abnormality is found, control your machine according to the descriptionof this manual. Never tamper or dismount any part contrary to the description. For repairs, contact Authorized Service Agent or local dealership.State of abnormality Probable cause (malfunction) RemedyEngine does not startI-O switch is set to STOP. Set the I-O switch to OPERATION.Failure to operate primer pump Push 7 to 10 timesLow pulling speed of starter rope Pull stronglyLack of fuel Feed fuelClogged fuel filter CleanBroken fuel tube Straighten fuel tubeDeteriorated fuel Deteriorated fuel makes starting more difficult.Replace with new fuel. (Recommendedreplacement: 1 month)Excessive suction of fuel Set throttle lever from medium speed to highspeed, and pull starter handle until enginestarts. Once engine starts, metal bladestarts rotating. Pay full attention to metalblade.If engine will not start still, remove spark plug,dry the electrode, and reassemble them asthey originally are. Then, start as specified.Detached plug cap Attach securelyContaminated spark plug CleanAbnormal clearance of spark plug Adjust clearanceOther abnormality of spark plug ReplaceAbnormal carburetor Make request for inspection and maintenance.Starter rope cannot be pulled Make request for inspection and maintenance.Abnormal drive system Make request for inspection and maintenance.Engine stops soonEngine speed does not increaseInsufficient warm-up Perform warm-up operationChoke lever is set to “CLOSE” althoughengine is warmed up. Set to “OPEN”Clogged fuel filter CleanContaminated or clogged air cleaner CleanAbnormal carburetor Make request for inspection and maintenance.Abnormal drive system Make request for inspection and maintenance.Metal blade does not rotateStop engine immediatelyLoosened metal blade-tightening nut Tighten securelyTwigs caught by metal blade or dispersion-preventing cover. Remove foreign matterAbnormal drive system Make request for inspection and maintenance.Main unit vibrates abnormallyStop engine immediatelyBroken, bent or worn metal blade Replace metal bladeLoosened metal blade-tightening nut Tighten securelyShifted convex part of metal blade and metalblade support fitting. Attach securelyAbnormal drive system Make request for inspection and maintenance.Metal blade does not stop immediatelyStop engine immediatelyHigh idling rotation AdjustDetached throttle wire Attach securelyAbnormal drive system Make request for inspection and maintenance.Engine does not stopRun engine at idling, and set choke leverto CLOSEDetached connector Attach securelyAbnormal electric system Make request for inspection and maintenance.When the engine does not start after warm-up operation:If there is no abnormality found for the check items, open the throttle by about 1/3 and start the engine.