20 ENGLISH24. When cleaning the wireless unit, gently wipewith a dry soft cloth. Do not use benzine, thin-ner, conductive grease or the like.25. When storing the wireless unit, keep it in thesupplied case or a static-free container.26. Do not insert any devices other than Makitawireless unit into the slot on the tool.27. Do not use the tool with the lid of the slot dam-aged. Water, dust, and dirt come into the slot maycause malfunction.28. Do not pull and/or twist the lid of the slot morethan necessary. Restore the lid if it comes offfrom the tool.29. Replace the lid of the slot if it is lost ordamaged.SAVE THESE INSTRUCTIONS.FUNCTIONALDESCRIPTIONCAUTION: Always be sure that the tool isswitched off and the battery cartridge is removedbefore adjusting or checking function on the tool.Installing or removing batterycartridgeCAUTION: Always switch off the tool beforeinstalling or removing of the battery cartridge.CAUTION: Hold the tool and the battery car-tridge firmly when installing or removing batterycartridge. Failure to hold the tool and the batterycartridge firmly may cause them to slip off your handsand result in damage to the tool and battery cartridgeand a personal injury.To remove the battery cartridge, slide it from the toolwhile sliding the button on the front of the cartridge.► Fig.1: 1. Red indicator 2. Button 3. Battery cartridgeTo install the battery cartridge, align the tongue on thebattery cartridge with the groove in the housing and slipit into place. Insert it all the way until it locks in placewith a little click. If you can see the red indicator on theupper side of the button, it is not locked completely.CAUTION: Always install the battery cartridgefully until the red indicator cannot be seen. If not,it may accidentally fall out of the tool, causing injury toyou or someone around you.CAUTION: Do not install the battery cartridgeforcibly. If the cartridge does not slide in easily, it isnot being inserted correctly.Indicating the remaining batterycapacityPress the check button on the battery cartridge to indi-cate the remaining battery capacity. The indicator lampslight up for a few seconds.► Fig.2: 1. Indicator lamps 2. Check buttonIndicator lamps RemainingcapacityLighted Off Blinking75% to 100%50% to 75%25% to 50%0% to 25%Charge thebattery.The batterymay havemalfunctioned.NOTE: Depending on the conditions of use and theambient temperature, the indication may differ slightlyfrom the actual capacity.NOTE: The first (far left) indicator lamp will blink whenthe battery protection system works.Tool / battery protection systemThe tool is equipped with a tool/battery protection sys-tem. This system automatically cuts off power to themotor to extend tool and battery life. The tool will auto-matically stop during operation if the tool or battery isplaced under one of the following conditions:Overload protectionWhen the battery is operated in a manner that causesit to draw an abnormally high current, the tool automat-ically stops without any indication. In this situation, turnthe tool off and stop the application that caused the toolto become overloaded. Then turn the tool on to restart.Overheat protectionWhen the tool or battery is overheated, the tool stopsautomatically. In this case, let the tool and battery coolbefore turning the tool on again.Overdischarge protectionWhen the battery capacity is not enough, the tool stopsautomatically. In this case, remove the battery from thetool and charge the battery.