Hitachi DH18DLP4 Instruction Manual - Page 17

English CAUTION: ⅜ Application of force more than necessary will not only expedite work 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 use the rotary hammer in the rotation and striking mode with the drill chuck and chuck adapter attached. This would seriously shorten the service life of every component of the machine. 5. When driving wood screws (Fig. 21) (1) Selecting a suitable driver bit Employ plus-head screws, if possible, since the driver bit easily slips off the heads of slotted-head screws. (2) Tightening wood screws Prior to tightening wood screws, make pilot holes suitable for them in the wooden board. Apply the bit to the screw head grooves and gently drive the screws in the holes. Bit Socket Mounting hole Depth gauge Side handle Fig. 22 7. How to use the drill bit (taper shank) and the taper shank adapter (1) Mount the taper shank adapter to the rotary hammer. (Fig. 23) (2) Mount the drill bit (taper shank) to the taper shank adapter. (Fig. 23) (3) Turn the switch ON, and drill a hole to prescribed depth. (4) To remove the drill bit (taper shank), insert the cotter into the slot of the taper shank adapter and strike the head of the cotter with a hammer supporting on the rest. (Fig. 24) Grip Drill bit Chuck adapter Front cap Grip Taper shank adapter Front cap Fig. 23 Fig. 21 CAUTION: Exercise care in preparing a pilot hole suitable for the wood screw taking the hardness of the wood into consideration. Should the hole be excessively small or shallow, requiring much power to drive the screw into it, the thread of the wood screw may sometimes be damaged. 6. Using depth gauge (Fig. 22) (1) Loosen the knob on the side handle, and insert the depth gauge into the mounting hole on the side handle. (2) Adjust the depth gauge position according to the depth of the hole and tighten the knob bolt securely. Cotter Taper shank adapter Rests Fig. 24 17