Makita HP2070F Owners Manual - Page 10

OPERATION Hammer drilling operation CAUTION: • There is a tremendous and sudden twisting force exerted on the tool/bit at the time of hole break-through, when the hole becomes clogged with chips and particles, or when striking reinforcing rods embedded in the concrete. Always use the side grip (auxiliary handle) and firmly hold the tool by both side grip and switch handle during operations. Failure to do so may result in the loss of control of the tool and potentially severe injury. When drilling in concrete, granite, tile, etc., move the action mode changing lever to the position of symbol to use "rotation with hammering" action. Be sure to use a tungsten-carbide tipped bit. Position the bit at the desired location for the hole, then pull the switch trigger. Do not force the tool. Light pressure gives best results. Keep the tool in position and prevent it from slipping away from the hole. Do not apply more pressure when the hole becomes clogged with chips or particles. Instead, run the tool at an idle, then remove the bit partially from the hole. By repeating this several times, the hole will be cleaned out and normal drilling may be resumed. 001302 Blow-out bulb (optional accessory) After drilling the hole, use the blow-out bulb to clean the dust out of the hole. 1 1. Blow-out bulb 10 Drilling operation When drilling in wood, metal or plastic materials, move the action mode changing lever to the position of symbol to use "rotation only" action. Drilling in wood When drilling in wood, the best results are obtained with wood drills equipped with a guide screw. The guide screw makes drilling easier by pulling the bit into the workpiece.