[. . . ] Accessories running faster than their rated speed can break and fly apart. The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool. Before each use inspect the accessory such as abrasive wheels for chips and cracks. If power tool or accessory is dropped, inspect for damage or install an undamaged accessory. [. . . ] Wheel intended for larger power tool is not suitable for the higher speed of a smaller tool and may burst. Make sure the wheel is not contacting the workpiece before the switch is turned on. Watch for vibration or wobbling that could indicate poor installation or a poorly balanced wheel. Hold the tool so that sparks fly away from you and other persons or flammable materials. Do not touch the workpiece immediately after operation; it may be extremely hot and could burn your skin. Always be sure that the tool is switched off and unplugged or that the battery cartridge is removed before carrying out any work on the tool. Observe the instructions of the manufacturer for correct mounting and use of wheels. If working place is extremely hot and humid, or badly polluted by conductive dust, use a shortcircuit breaker (30 mA) to assure operator safety. This tool has not been waterproofed, so do not use water on the workpiece surface. Ensure that ventilation openings are kept clear when working in dusty conditions. If it should become necessary to clear dust, first disconnect the tool from the mains supply (use non metallic objects) and avoid damaging internal parts. WARNING: DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to safety rules for the subject product. MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury. Before using battery cartridge, read all instructions and cautionary markings on (1) battery charger, (2) battery, and (3) product using battery. It may result in a risk of overheating, possible burns and even an explosion. If electrolyte gets into your eyes, rinse them out with clear water and seek medical attention right away. Do not short the battery cartridge: (1) Do not touch the terminals with any conductive material. A battery short can cause a large current flow, overheating, possible burns and even a breakdown. Do not store the tool and battery cartridge in locations where the temperature may reach or exceed 50°C (122°F). Do not incinerate the battery cartridge even if it is severely damaged or is completely worn out. For continuous operation, press the front of the slide switch to lock it. When the battery cartridge is inserted on the tool with the slide switch positioned in the "O (OFF)" position, the indication lamp flickers quickly for approximately one second. [. . . ] The typical A-weighted noise level determined according to EN60745: Sound pressure level (LpA): 72 dB (A) Uncertainty (K): 3 dB (A) The noise level under working may exceed 80 dB (A). Always be sure that the tool is switched off and the battery cartridge is removed before attempting to perform inspection or maintenance. Regularly clean the tool's air vents or whenever the vents start to become obstructed. 7) Insert the top end of slotted bit screwdriver into the notch in the tool and remove the holder cap cover by lifting it up. [. . . ]