[. . . ] 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. Safety equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries. Carrying power tools with your finger on the switch or plugging in power tools that have the switch on invites accidents. [. . . ] DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to rotary hammer safety rules. If you use this tool unsafely or incorrectly, you can suffer serious personal injury. Hertz alternating current no load speed Class II Construction revolutions or reciprocation per minute number of blow This switch functions only when setting the tool in symbol action mode. CAUTION: Always be sure that the tool is switched off and unplugged before adjusting or checking function on the tool. FOR MODEL HR5211C CAUTION: Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the "OFF" position when released. The revolutions and blows per minute can be adjusted just by turning the adjusting dial. Refer to the table below for the relationship between the number settings on the adjusting dial and the revolutions/blows per minute. Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the "OFF" position when released. â· This switch functions when setting the tool in symbol and symbol modes. CAUTION: If the tool is operated continuously at low speeds for a long time, the motor will get overloaded, resulting in tool malfunction. The speed adjusting dial can be turned only as far as 5 and back to 1. Do not force it past 5 or 1, or the speed adjusting function may no longer work. CAUTION: When using the tool in the symbol mode, the switch trigger does not work and only the slide switch works. CAUTION: Do not rotate the change lever when the tool is running under load. To avoid rapid wear on the mode change mechanism, be sure that the change lever is always positively located in one of the two or three action mode positions. The torque limiter will actuate when a certain torque level is reached. CAUTION: As soon as the torque limiter actuates, switch off the tool immediately. If the indicator lamp does not light up, the mains cord or the controller may be defective. The indicator lamp is lit but the tool does not start even if the tool is switched on, the carbon brushes may be worn out, or the controller, the motor or the ON/OFF switch may be defective. The red service indicator lamp flickers when the carbon brushes are nearly worn out to indicate that the tool needs servicing. CAUTION: Always be sure that the tool is switched off and unplugged before carrying out any work on the tool. CAUTION: Always use the side grip to ensure operating safety when drilling in concrete, masonry, etc. [. . . ] Send the complete tool to Makita Authorized or Factory Service Center for this lubrication service. After drilling the hole, use the blow-out bulb to clean the dust out of the hole. Turn the tool on and apply slight pressure on the tool so that the tool will not bounce around, uncontrolled. CAUTION: Always be sure that the tool is switched off and unplugged before attempting to perform inspection or maintenance. [. . . ]