Makita HR2475 Owners Manual - Page 7

Dust cup 1. Dust cup 1 operations. Failure to do so may result in the loss of control of the tool and potentially severe injury. Blow-out bulb (optional accessory) 1. Blow-out bulb 1 001300 Use the dust cup to prevent dust from falling over the tool and on yourself when performing overhead drilling operations. Attach the dust cup to the bit as shown in the figure. The size of bits which the dust cup can be attached to is as follows. 006587 Dust cup 5 Dust cup 9 Bit diameter (mm) 6 - 14.5 12 - 16 002449 After drilling the hole, use the blow-out bulb to clean the dust out of the hole. Chipping/Scaling/Demolition OPERATION Hammer drilling operation 010168 010167 Set the action mode changing knob to the symbol. 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. CAUTION: • There is 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 Set the action mode changing knob to the symbol. Hold the tool firmly with both hands. Turn the tool on and apply slight pressure on the tool so that the tool will not bounce around, uncontrolled. Pressing very hard on the tool will not increase the efficiency. Drilling in wood or metal 1. Drill chuck assembly 1 010157 Use the optional drill chuck assembly. When installing it, refer to "Installing or removing the bit" described on the previous page. Set the action mode changing knob to the symbol. You can drill up to 13 mm(1/2") diameter in metal and up to 32 mm(1-1/4") diameter in wood. 7