[. . . ] Use of a cord suitable for outdoor use reduces the risk of electric shock. Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury. [. . . ] MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury. DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to drill safety rules. If you use this power tool unsafely or incorrectly, you can suffer serious personal injury. CAUTION: Always be sure that the tool is switched off and unplugged before adjusting or checking function on the tool. CAUTION: Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the "OFF" position when released. For continuous operation, pull the switch trigger and then push in the lock button. To stop the tool from the locked position, pull the switch trigger fully, then release it. A speed control screw is provided so that maximum tool speed can be limited (variable). Turn the speed control screw clockwise for higher speed, and counterclockwise for lower speed. To change the speed, turn the speed change knob so that the arrow on the tool body points toward the "I" position on the knob for low speed or "II" position for high speed. If it is hard to turn the knob, first turn the chuck slightly in either direction and then turn the knob again. CAUTION: Use the speed change knob only after the tool comes to a complete stop. If you operate the tool with the speed change knob positioned halfway between the "I" and "II" position, the tool may be damaged. CAUTION: Always be sure that the tool is switched off and unplugged before carrying out any work on the tool. Use the reversing switch only after the tool comes to a complete stop. Changing the direction of rotation before the tool stops may damage the tool. Install the side grip so that the teeth on the grip fit in between the protrusions on the tool barrel. The depth gauge cannot be used at the position where the depth gauge strikes against the gear housing. The depth gauge cannot be used at the position where the depth gauge strikes against the tool body. Holding the tool Hold the tool only by the handle when performing an operation. To remove the bit, turn the chuck key counterclockwise in just one hole, then loosen the chuck by hand. After using the chuck key, be sure to return to the original position. [. . . ] Regularly clean the tool's air vents or whenever the vents start to become obstructed. To maintain product SAFETY and RELIABILITY, repairs, carbon brush inspection and replacement, any other maintenance or adjustment should be performed by Makita Authorized Service Centers, always using Makita replacement parts. CAUTION: These accessories or attachments are recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. [. . . ]