Hitachi DH25DAL Instruction Manual - Page 15

English HOW TO USE 1. Switch operation ⅜ When the switch trigger is depressed, the tool rotates. When the switch trigger is released, the tool stops. ⅜ The rotational speed of the rotary hammer can be controlled by varying the amount that the switch trigger is pulled. Speed is low when the switch trigger is pulled slightly and increases as the switch trigger is pulled more. ⅜ When releasing the switch trigger, the brake will be applied for immediate stopping. 2. Rotation + Striking Align the " " mark with the " " mark by rotating the change lever to set the "Rotation + Striking" mode. (Fig. 12) " " mark 3. Rotation only Align the " " mark with the " " mark by rotating the change lever to set the "Rotation only" mode. (Fig. 12) 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. 14): (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. Drill chuck Chuck adaptor Part of SDS-plus Grip Front cap shank Fig. 14 "" mark Change lever " " mark "" mark CAUTION: G 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 Fig. 12 the service life of the rotary hammer in addition. G Drill bit may snap off while withdrawing the rotary (1) Mount the drill bit. (2) Pull the trigger switch after applying the drill bit tip to the drilling position. (Fig. 13) G hammer from the drilled hole. For withdrawing, it is important to use a pushing motion. Do not attempt to drill anchor holes or holes in concrete with the main unit in the rotation only mode. G Do not attempt to use the rotary hammer in the rotation and striking mode with the drill chuck and chuck adaptor attached. This would seriously shorten the service life of every components of the machine. 4. When driving machine screws (Fig. 15) Fig. 13 First, insert the bit into the socket in the end of chuck adaptor (D). (3) Pushing the rotary hammer forcibly is not necessary at all. Pushing slightly so that drill dust comes out gradually is just sufficient. Next, mount chuck adaptor (D) on the main unit using procedures described in 3 (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. CAUTION: G When the drill bit touches an iron reinforcing rod, the bit will stop immediately and the rotary hammer will react to revolve. Therefore please grip the side handle and handle tightly as shown in Fig. 13. 15