[. . . ] Do not operate charger with damaged cord or plug -- replace them immediately. Do not operate charger if it has received a sharp blow, been dropped, or otherwise damaged in any way; take it to a qualified serviceman. Do not disassemble charger or battery cartridge; take it to a qualified serviceman when service or repair is required. To reduce risk of electric shock, unplug charger from outlet before attempting any maintenance or cleaning. [. . . ] If you leave the battery cartridge in the charger after the charging cycle is complete, the charger will switch into its ``trickle charge (maintenance charge)'' mode which will last approximately 24 hours. Never use it for other purposes or for other manufacturer's batteries. When you charge a new battery cartridge or a battery cartridge which has not been used for a long period of time, it may not accept a full charge. You can recharge the battery cartridge fully after discharging it completely and recharging a couple of times. If you charge a battery cartridge from a just-operated tool or a battery cartridge which has been left in a location exposed to direct sunlight or heat for a long time, the charging light may flash in red color. The battery cartridge will cool faster if you remove the battery cartridge from the battery charger. If the charging light flashes alternately in green and red color, a problem exists and charging is not possible. The terminals on the charger or battery cartridge are clogged with dust or the battery cartridge is worn out or damaged. If you leave the battery cartridge in the charger to prevent spontaneous discharging after full charge, the charger will switch into its ``trickle charge (maintenance charge)'' mode and keep the battery cartridge fresh and fully charged. Always stop tool operation and charge the battery cartridge when you notice less tool power. Charge the Nickel Metal Hydride battery cartridge when you do not use it for more than six months. Always be sure that the tool is switched off and unplugged before installing or removing the blade. Always clean out all chips or foreign matter adhering to the blade and/or blade holder. Failure to do so may cause insufficient tightening of the blade, resulting in a serious injury. Use a lubricant or cutting oil between the blade and roller when cutting iron or composition board, etc. Failure to do so will shorten the service life of your blade and roller or lead to potentially dangerous blade breakage. to install the blade , loosen the bolt on the blade holder with the hex wrench. With the blade teeth facing forward, insert the blade into the blade holder as far as it will go. CAUTION: Always be sure that the tool is switched off and unplugged before installing or removing the blade. If the universal blade clamp is used, you can use blades of other makes which have a universal shank like the one shown in the figure, with a blade width of 6. Make sure that the end of the blade shank reaches the bottom of the inner slit and tighten the bolt securely with the hex wrench. This tool can be operated with an orbital or a straight line (up and down) cutting action. [. . . ] CAUTION: Always be sure that the tool is switched off and the battery cartridge is removed before carrying out any work on the tool. To maintain product safety and reliability, repairs, maintenance or adjustment should be carried out by a Makita Authorized Service Center. To trim edges or make dimensional adjustments, run the blade lightly along the cut edges. The underside of the workpiece can be greased instead of using a coolant. [. . . ]