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22. Definitions for symbols used on this tool V ............. volts Hz ........... hertz A ............. amperes no .......... no load speed W ............ watt ............ Class II Construction ---/min .... revolutions per minute ........... Alternating current English DOUBLE INSULATION FOR SAFER OPERATION To ensure safer operation of this power tool, HITACHI has adopted a double insulation design. “Double insulation” means that two physically separated insulation systems have been used to insulate the electrically conductive materials connected to the power supply from the outer frame handled by the operator. Therefore, either the symbol “ ” or the words and “Double insulation” appear on the power tool or on the nameplate. Although this system has no external grounding, you must still follow the normal electrical safety precautions given in this Instruction Manual, including not using the power tool in wet environments. To keep the double insulation system effective, follow these precautions: . Only HITACHI AUTHORIZED SERVICE CENTER should disassemble or assemble this power tool, and only genuine HITACHI replacement parts should be installed. . Clean the exterior of the power tool only with a soft cloth moistened with soapy water, and dry thoroughly. Never use solvents, gasoline or thinners on plastic components; otherwise the plastic may dissolve. SAVE THESE INSTRUCTIONS AND MAKE THEM AVAILABLE TO OTHER USERS AND OWNERS OF THIS TOOL! English FUNCTIONAL DESCRIPTION NOTE: The information contained in this Instruction Manual is designed to assist you in the safe operation and maintenance of the power tool. NEVER operate, or attempt any maintenance on the tool unless you have first read and understood all safety instructions contained in this manual. Some illustrations in this Instruction Manual may show details or attachments that differ from those on your own power tool. NAME OF PARTS Cylinder Case Stopper Trigger Switch Brush Cap (Under the Tail Cover) NameplateSide Handle Front Cap Grip (B) Grip (A) Tail Cover Housing Fig. 1 SPECIFICATIONS Model H 45MR Motor Single-Phase, Series Commutator Motor Power Source Single-Phase, 120 V AC 60 Hz Current 8.3 A Full-load Impact Rate 3000/min. Weight 13.0 lbs (5.9 kg) English ASSEMBLY CAUTION: To prevent accidents, make sure to turn the switch off and disconnect the plug from the receptacle. NOTE: When using tools such as bull points, cutters, etc., make sure to use the genuine parts designated by our company. 1. Installing Tools (1) Clean the shank portion of the tool. Fig. 2 (2) As shown in Fig. 2, pull grip (A) in the direction of A, and insert the tool into a hole of the front cap. (3) Adjust the groove position while turning the tool, and furthermore insert it until it hits the end of the hole. (4) Return grip (A) to its original position, pull the tool to make sure it is locked completely. (Fig. 3) 2. Deciding Working Position of Tool The tool can be turned every 30 degrees and can be fixed at the position of 12 steps. (1) As shown in Fig. 4, the blade angle can be freely changed if the grip (A) is turned B in the direction of B in a state where grip (B) is slid in the direction of A. A (2) Release grip (B) and turn the tool, and make sure that it is locked completely. Grip (A) 3. Removing Tool As shown in Fig. 2, pull grip (A), and pull out the tool. Grip (B) Grip (A) Tool Shank Front Cap A Fig. 3 Fig. 4 English 4. Move the side handle The side handle can be fixed at any desired position; 360 degrees, and can also be fixed at any position in the backand- forth direction. (1) Loosen the handle by turning the grip in Grip AB the direction of A as shown in Fig. 5. (2) Adjust it to a position where vertical (up- Fig. 5 Fig. 6 and-down) operation can be facilitated as illustrated in Fig. 6, Fig. 7, and Fig. 8. (3) Turn the grip in the direction of B and fix the handle. Fig. 7 Fig. 8 English OPERATION APPLICATIONS . Demolishing concrete, chiseling concrete, grooving, bar cutting, and driving piles. Application examples: Installation of piping and wiring, sanitary facility installation, machinery installation, water supply and drainage work, interior jobs, harbor facilities and other civil engineering work. PRIOR TO OPERATION 1. Power source Ensure that the power source to be utilized conforms to the power source requirements specified on the product nameplate. 2. Power switch Ensure that the switch is in the OFF position. If the plug is connected to a receptacle while the switch is in the ON position, the power tool will start operating immediately and can cause serious injury. 3. Extension cord When the work area is far away from the power source, use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable. WARNING: Damaged cord must be replaced or repaired. 4. Check the receptacle If the receptacle only loosely accepts the plug, the receptacle must be repaired. Contact a licensed electrician to make...