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9 Stopper Side Handle Fig. 10 USING DRILL CHUCK, CHUCK ADAPTOR Note that this machine can be used at “rotation only” if separately sold parts such as drill chuck and chuck adaptor are attached. Use it with the selector lever positioned at “rotation + hammering”. WARNING: During operation, be sure to grip the handle and the side handle firmly to prevent your body from swaying. English 6. Warming up (Fig. 11) The grease lubrication system in this unit may require warming up in cold regions. Position the end of the bit so makes contact with the concrete, turn on the switch and perform the warming up operation. Make sure that a hitting sound is produced and then use the unit. CAUTION: When the warming up operation is performed, hold the side handle and the main body securely with both hands to maintain a secure grip and be careful not to twist your body by the jammed drill bit. 7. How to use the drill bit (taper shank) and the taper shank adaptor. (1) Install drill bit with taper shank in the taper shank adaptor. (2) Turn the power on and drill a base hole. (3) After cleaning out dust with a syringe, attach the plug to the anchor tip and drive in the anchor with a manual hammer. (4) To remove the drill bit with taper shank, insert a cotter into the slot of the taper shank adaptor, place supports under the rotary hammer and tap the cotter with a manual hammer. (Fig. 13) Fig. 11 Taper Shank Adaptor Drill Bit (Taper shank) Taper Shank Adaptor Cotter Support Fig. 13 Fig. 12 English (1) Switching to “rotation + hammering” For switching to “rotation + hammering”, follow the same procedures mentioned in [3. When drilling at “rotation + hammering”] in Page 12. (2) Attaching chuck adaptor to drill chuck (Fig. 14) (a) Attach the chuck adaptor to the drill chuck. (b) The SDS max shank of the chuck Adaptor adaptor is equivalent to the drill bit. Fig. 14 Therefore, follow the same procedure as [6. How to install tool] in Page 10 for attaching and detaching. (3) Drilling (a) Even if you apply more-than-required pressure to the machine body, drilling can never be performed as quickly as you expect. Applying more force or pressure to the machine body than what is needed, on the contrary, damages the drill tip, resulting in the declined working efficiency and shortened life of this machine. (b) A drill can snap sometimes when drilling is almost finished. It is important to relax your thrusting pressure when drilling is nearing the end. HOW TO USE THE CORE BIT When boring penetrating large hole use the core bit. At that time use with the center pin and the core bit shank provided as optional accessories. 1. Mounting CAUTION: Be sure to turn power OFF and disconnect the plug from the receptacle. (1) Mount the core bit to the core bit shank. (Fig. 15) Lubricate the thread of the core bit shank to facilitate disassembly. Drill Chuck Grip SDS max Shank Chuck Core Bit Core Bit Shank Fig. 15 English (2) Mount the core bit shank to the rotary hammer. (Fig. 16) (3) Insert the center pin into the guide plate until it stops. (4) Engage the guide plate with the core bit, and turn the guide plate to left or right so that it does not fall even if it faces downward. (Fig. 17) 2. How to bore (Fig. 18) (1) Connect the plug to the receptacle. (2) A spring is installed in the center pin. Push it lightly to the wall or the floor straight. Connect all over the surface of the core bit tip and start operating. (3) When boring about 3/16" (5 mm) in depth the position of the hole will establish. Bore after that removing the center pin and the guide plate from core bit. (4) Application of excessive force will not only expedite the work, but will deteriorate the tip edge of the drill bit, resulting in reduced service life of the rotary hammer. CAUTION: When removing the center pin and the guide plate, turn OFF the switch and disconnect the plug from the receptacle. 3. Dismounting (Fig. 19) Remove the core bit shank from the rotary hammer and strike the head of the core bit shank strongly two or three times with a manual hammer holding the core bit, then the thread becomes loose and the core bit can be removed. Fig. 16 Guide Plate Center Pin Core Bit Core Bit Tip Fig. 17 Fig. 18 Core Bit Shank Fig. 19 English MAINTENANCE AND INSPECTION WARNING: Be sure to switch power OFF and disconnect the plug from the receptacle during maintenance and inspection. 1. Inspecting the drill bits Since use of a dull tool will cause motor malfunctioning and degraded efficiency, replace the drill bit with a new one or resharpening without delay when abrasion is noted. 2. Inspecting the mounting screws Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be loose, retighten them immediately. WARNING: Using this rotary hammer with loosen screws is extremely dangerous. 3. Maintenance of the motor The motor unit winding is the very “heart” of the power tool. Exercise due care to ensure the winding does not become damaged and/...