15TROUBLE SHOOTINGBefore asking for repairs, conduct your own inspectionfirst. If you find a problem that is not explained in themanual, do not attempt to dismantle the tool. Instead, askMakita Authorized Service Centers, always using Makitareplacement parts for repairs.ACCESSORIESCAUTION:• These accessories or attachments are recommendedfor use with your Makita tool specified in this manual.The use of any other accessories or attachments mightpresent a risk of injury to persons. Only use accessoryor attachment for its stated purpose.If you need any assistance for more details regardingthese accessories, ask your local Makita Service Center.• Cutter blade• Nylon cutting head• Pole hedge trimmer attachment (for model BBC300L)• Pole saw attachment (for model BBC300L)• Cultivator attachment (for model BBC300L)• Makita genuine battery and chargerFor Model BBC231UNoise ENG104-2The typical A-weighted noise level determined accordingto ISO22868:Sound pressure level (L pA ): 79.7 dB (A)Uncertainty (K): 2.5 dB (A)The noise level under working may exceed 80 dB (A).Wear ear protection.Vibration ENG244-1The vibration emission value determined according toISO22867, EN786:Vibration emission (ah ): 2.5 m/s2 or lessUncertainty (K): 1.5 m/s 2Malfunction status Cause ActionMotor does not run.Battery cartridge is not installed. Install the battery cartridge.Battery problem (under voltage) Recharge the battery. If recharging isnot effective, replace battery.The drive system does not workcorrectly.Ask your local authorized servicecenter for repair.Motor stops running after a little use.Rotation is reverse. Change the direction of rotation withthe reversing switch.Battery’s charge level is low. Recharge the battery. If recharging isnot effective, replace battery.Overheating. Stop using of tool to allow it to cooldown.It does not reach maximum RPM.Battery is installed improperly. Install the battery cartridge asdescribed in this manual.Battery power is dropping. Recharge the battery. If recharging isnot effective, replace battery.The drive system does not workcorrectly.Ask your local authorized servicecenter for repair.Cutting tool does not rotate:stop the machine immediately!Foreign object such as a branch isjammed between the guard and thenylon cutting head or cutter blade.Remove the foreign object.Cutter blade fastening nut is loose. Tighten the nut properly as describedin this manual.The cutter blade is bended. Replace the cutter blade.The drive system does not workcorrectly.Ask your local authorized servicecenter for repair.Abnormal vibration:stop the machine immediately!One of nylon cord has been brokenand the head got unbalanced.Bump the nylon cutting head againstthe ground while it is rotating to causethe cord to feed.The cutter blade is bended, cracked orworn. Replace the cutter blade.Cutter blade fastening nut is loose. Tighten the nut properly as describedin this manual.Cutter blade is fastened improperly.The drive system does not workcorrectly.Ask your local authorized servicecenter for repair.Cutting tool and motor cannot stop:Remove the battery immediately! Electric or electronic malfunction. Remove the battery and ask your localauthorized service center for repair.