Hitachi DV20VB2 Instruction Manual - Page 11

English 6. Selecting the appropriate drill bit ⅜ When boring concrete or stone Use the drill bits specified in the Optional Accessories. ⅜ When boring metal or plastic Use an ordinary metalworking drill bit. ⅜ When boring wood Use an ordinary woodworking drill bit. However, when drilling 1/4" (6.5 mm) or smaller holes, use a metalworking drill bit. 7. Mounting and dismounting of the bit (Fig. 2) (1) Open the chuck jaws, and insert the bit into the chuck. (2) Place the chuck wrench in each of the Chuck wrench Drill chuck three holes in the chuck, and turn it in the clockwise direction (viewed from the front side). Tighten securely. (3) To remove the bit, place the chuck wrench into one of the holes in the chuck Tighten and turn it in the counterclockwise direction. Loosen 8. Fixing the side handle (Fig. 3) Attach the side handle to the mounting part. Fig. 2 Rotate the side handle grip in a clockwise direction to secure it. Set the side handle to a position that is suited to the operation and then securely tighten the side handle grip. To attach a depth gauge on the side handle, insert the gauge into the U-shaped groove on the side handle, adjust the position of the depth gauge in accordance with the desired depth of the hole, and firmly tighten the side handle grip. (Fig. 4) Depth gauge Side handle Loosen Fig. 3 Tighten Side handle Loosen Fig. 4 Tighten 11