Assessments - 5, GPA: 4
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This will help prevent premature wear of the tool. 5 • • ASSEMBLY CAUTION: • Always be sure that the tool is switched off and unplugged before carrying out any work on the tool. Side handle (auxiliary handle) 001295 5 1 2 4 3 6 1. Grip base 2. Side grip 3. Loosen 4. Teeth 5. Protrusion 6. Tighten Always use the side grip to ensure operating safety. Install the side grip so that the teeth on the grip fit in between the protrusions on the tool barrel. Then tighten the grip by turning clockwise at the desired position. It may be swung 360° so as to be secured at any position. Bit grease Coat the bit shank head beforehand with a small amount of bit grease (about 0.5 -1 g; 0.02 - 0.04 oz.). This chuck lubrication assures smooth action and longer service life. Installing or removing the bit Clean the bit shank and apply bit grease before installing the bit. 001296 1 2 1. Bit shank 2. Bit grease Insert the bit into the tool. Turn the bit and push it in until it engages. After installing, always make sure that the bit is securely held in place by trying to pull it out. 001297 1 2 1. Bit 2. Chuck cover To remove the bit, pull the chuck cover down all the way and pull the bit out. 001298 1 2 1. Bit 2. Chuck cover Bit angle (when chipping, scaling or demolishing) 003576 1 2 1. Lock button 2. Action mode changing knob The bit can be secured at the desired angle. To change the bit angle, depress the lock button and rotate the action mode changing knob to the O symbol. Turn the bit to the desired angle. Depress the lock button and rotate the action mode changing knob to the symbol. Then make sure that the bit is securely held in place by turning it slightly. 003577 6 Depth gauge Set the action mode changing knob to the symbol. 001299 1. Depth gauge 1 The depth gauge is convenient for drilling holes of uniform depth. Loosen the side grip and insert the depth gauge into the hole in the side grip. Adjust the depth gauge to the desired depth and tighten the side grip. NOTE: • The depth gauge cannot be used at the position where the depth gauge strikes against the gear housing. Dust cup 001300 1. Dust cup 1 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. 006382 Bit diameter Dust cup 5 6 mm (1/4") - 14.5 mm (9/16") Dust cup 9 12 mm (15/32") - 16 mm (5/8") OPERATION Hammer drilling operation 003579 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 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 driling precision. Blow-out bulb (optional accessory) 002449 1. Blow-out bulb 1 After drilling the hole, use the blow-out bulb to clean the dust out of the hole. Chipping/Scaling/Demolition 003580 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 7 bounce around, uncontrolled. Pressing very hard on the tool will not increase the efficiency. bounce around, uncontrolled. Pressing very hard on the tool will not increase the efficiency. 001303 1 1. Drill chuck assembly 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: • Never use “rotation with hammering” when the drill chuck assembly is installed on the tool. The drill chuck assembly may be damaged. Also, the drill chuck will come off when reversing the tool. • 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. Ho...
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