8 ENGLISHFUNCTIONALDESCRIPTIONCAUTION: 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.231► 1. Red indicator 2. Button 3. Battery cartridgeTo remove the battery cartridge, slide it from the toolwhile sliding the button on the front of the cartridge.To 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.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 tool is operated in a manner that causes it to draw anabnormally high current, the tool automatically stops. In this situa-tion, turn the tool off and stop the application that caused the tool tobecome overloaded. Then turn the tool on to restart.Overheat protectionWhen the tool or battery is overheated, the tool stopsautomatically and the lamp blinks. In this case, let thetool and battery cool before turning the tool on again.Overdischarge protectionWhen the battery capacity becomes low, the tool stopsautomatically. If the product does not operate evenwhen the switches are operated, remove the batteriesfrom the tool and charge the batteries.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.12► 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.