Makita HR2432 Owners Manual - Page 9

This tool can be also used as a standard rotary hammer without the dust extractor attachment and the dust bag. Before drilling operation without the dust extractor attachment and the dust bag, plug the hose port with the cap provided. The cap reduces the exhaust air from the dust exhaust port for your comfortable operation. Hammer drilling operation 005889 After drilling the hole, use the blow-out bulb to clean the dust out of the hole. Chipping/Scaling/Demolition 005890 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 a tremendous and sudden twisting force exerted on the tool/bit at the time of hole breakthrough, 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. NOTE: • Eccentricity in the bit rotation may occur while operating the tool with no load. The tool automatically centers itself during operation. This does not affect the drilling precision. Blow-out bulb (optional accessory) 002449 1. Blow-out bulb 1 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 004223 1. Chuck adapter 1 2. Keyless drill chuck 2 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. CAUTION: • Pressing excessively on the tool will not speed up the drilling. In fact, this excessive pressure will only serve to damage the tip of your bit, decrease the tool performance and shorten the service life of the tool. • There is a tremendous twisting force exerted on the tool/bit at the time of hole breakthrough. Hold the tool firmly and exert care when the bit begins to break through the workpiece. • A stuck bit can be removed simply by setting the reversing switch to reverse rotation in order to back out. However, the tool may back out abruptly if you do not hold it firmly. • Always secure small workpieces in a vise or similar hold-down device. 9