Hitachi DH22PG Instruction Manual - Page 11

English 3. Rotation only This rotation hammer can be set to rotation only mode by turning the change lever to the mark (Fig. 9) Change lever ⅜ Do not attempt to use the rotary hammer in the rotation and hammering function with the drill chuck and chuck adaptor attached. This would seriously shorten the service life of every components of the machine. Fig. 9 To drill a wood or metal material using the separately sold drill chuck and chuck adaptor, proceed as follows. Installing drill chuck and chuck adaptor (Fig. 10): (1) Attach the drill chuck to the chuck adaptor. (2) The part of the SDS-plus shank is the same as the drill bit. Therefore, refer to the item of "Mounting the drill bit" for attaching it. 4. When driving machine screws (Fig. 11) First, insert the bit into the socket in the end of chuck adaptor (D). Next, mount chuck adaptor (D) on the main unit using procedures described in 6 (1), (2), (3), put the tip of the bit in the slots in the head of the screw, grasp the main unit and tighten the screw. Bit Socket Chuck adapter (D) Front cap Grip Front cap Grip Drill bit Chuck adapter Part of SDS-plus shank Fig. 10 CAUTION: ⅜ Application of force more than necessary will not only reducing drilling efficiency at all, but will deteriorate the tip edge of the drill bit and reduce the service life of the rotary hammer in addition. ⅜ Drill bit may snap off while withdrawing the rotary hammer from the drilled hole. For withdrawing, it is important to use a pushing motion. ⅜ Do not attempt to drill anchor holes or holes in concrete with the main unit in the rotation only function. Fig. 11 CAUTION: ⅜ Exercise care not to excessively prolong driving time, otherwise, the screws may be damaged by excessive force. ⅜ Apply the rotary hammer perpendicularly to the screw head when driving a screw; otherwise, the screw head or bit will be damaged, or driving force will not be fully transferred to the screw. ⅜ Do not attempt to use the rotary hammer in the rotation and hammering function with chuck adaptor (D) and bit attached. 5. When driving wood screws (1) Selecting a suitable driver bit Employ phillips screws, if possible, since the driver bit easily slips off the heads of slotted-head screws. 11