Assessments - 1, GPA: 3
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Be careful not to scratch the lens of lamp, or it may lower the illumination. Reversing switch action For Model HR2450F, HR2450 only 001293 1 2 A B 1. Switch trigger 2. Reversing switch lever CAUTION: • Always check the direction of rotation before operation. • Use the reversing switch only after the tool comes to a complete stop. Changing the direction of rotation before the tool stops may damage the tool. • When you operate the tool in counterclockwise rotation, the switch trigger is pulled only halfway and the tool runs at half speed. For counterclockwise rotation, you cannot push in the lock button. This tool has a reversing switch to change the direction of rotation. Move the reversing switch lever to the position (A side) for clockwise rotation or to the position (B side) for counterclockwise rotation. Selecting action mode CAUTION: • Do not rotate the action mode changing knob when the tool is running under load. The tool will be damaged. • To avoid rapid wear on the mode change mechanism, be sure that the action mode changing knob is always positively located in one of the three action mode positions. Rotation with hammering 003573 1 2 3 1. Rotation with hammering 2. Lock button 3. Action mode changing knob For drilling in concrete, masonry, etc., depress the lock button and rotate the action mode changing knob to the symbol. Use a tungsten-carbide tipped bit. Hammering only 003574 1. Hammering only 1 For chipping, scaling or demolition operations, depress the lock button and rotate the action mode changing knob to the symbol. Use a bull point, cold chisel, scaling chisel, etc. Rotation only 003575 1. Rotation only 1 For drilling in wood, metal or plastic materials, depress the lock button and rotate the action mode changing knob to the symbol. Use a twist drill bit or wood bit. Torque limiter The torque limiter will actuate when a certain torque level is reached. The motor will disengage from the output shaft. When this happens, the bit will stop turning. CAUTION: • As soon as the torque limiter actuates, switch off the tool immediately. 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 se...
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