[. . . ] Do not incinerate the battery cartridge even if it is severely damaged or is completely worn out. Before using battery charger, read all instructions and cautionary markings on (1) battery charger, (2) battery, and (3) product using battery. CAUTION -- To reduce risk of injury, charge only MAKITA type rechargeable batteries. Other types of batteries may burst causing personal injury and damage. [. . . ] If the cartridge does not slide in easily, it is not being inserted correctly. Insert the battery cartridge so that the plus and minus terminals on the battery cartridge are on the same sides as their respective markings on the battery charger. When the battery cartridge is inserted, the charging light color will flash in red color and charging will begin. 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. After charging, remove the battery cartridge from the charger and unplug the charger from the power source. Always switch off the machine before insertion or removal of the battery cartridge. To remove the battery cartridge, pull out the set plate on the machine and grasp both sides of the cartridge while withdrawing it from the machine. To insert the battery cartridge, align the tongue on the battery cartridge with the groove in the housing and slip it into place. 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. When you charge a battery cartridge from a justoperated machine or a battery cartridge which has been left in a location exposed to direct sunlight or heat for a long time, let it cool off. When you charge a new battery cartridge or a battery cartridge which has not been used for a long period, sometimes the charging light will go out soon. If the charging light goes out within one minute even after repeating this procedure a couple of times, the battery cartridge is dead. 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 machine operation and charge the battery cartridge when you notice less machine power. NOTE: If the distance between the machine end (A) and the material to be fastened is more than 2 mm, the machine will not operate because the safety lever is not pressed enough to operate the machine. If the staples are driven too shallow, press the machine head as shown in Fig. If the staples are still driven too shallow, adjust the driving depth by turning the nut clockwise. Open the sub-magazine and remove the stuck staple using a screwdriver or the like. The machine must not operate if only the trigger is pulled or if only the safety lever is pressed against the wood. Test for possible faulty operation with a machine unloaded and pointed well away from yourself or any bystanders. [. . . ] Do not attempt to use staples that appear to be damaged, bent, rusty or corroded. CAUTION: Always be sure that the machine is switched off and the battery cartridge is removed before carrying out any work on the machine. To maintain product safety and reliability, repairs, maintenance or adjustment should be carried out by a Makita Authorized Service Center. If the staples are driven too deep or too shallow, adjust the driving depth by turning the nut on the bottom of the machine. [. . . ]