Craftsman 11543 Operation Manual - Page 17

SELECTING A DRILLING MODE See Figure 15. To adjust for type of drilling, slide the mode selector on the side of the motor housing to hammer mode, screw mode, or drilling mode. Select screw mode for driving screws. Screw mode operates with user adjusted torque. (See Adjustable Torque Clutch.) Drill mode is for full torque operations only and bypasses the clutch setting. Select drill mode when drilling with twist drills, hole saws, etc., in soft materials, or when the application calls for full torque of the drill. Select hammer mode for masonry, brick, tile, and concrete. For maximum performance, use carbide-tipped impact masonry bits. To use the hammer mode: [] Rotate the mode selector to the hammer mode. [] Apply light pressure and medium speed for best re- suits in brick. [] Apply additional pressure and high speed for hard materials such as concrete. [] When drilling holes in tile, practice on a scrap piece to determine the best speed and pressure. NOTE: The hammer drill has not been designed for reverse hammering. TO DECREASE TORQUE TOINCREASE TORQUE MODE TORQUE SELECTOR ADJUST(NGRiNG Fig. 15 LEVEL DRILLING See Figures 16- 17. Fig. 16 Levels are located on the top and end of the motor housing to help keep the drill bit level during use. [] Check the direction of rotation selector for the correct setting (forward or reverse). [] Secure the material to be drilled in a vise or with clamps to keep it from turning as the drill bit rotates. [] Hold the drill firmly and place the bit at the point to be drilled. [] Depress the switch trigger to start the drill. [] Move the drill bit into the workpiece, applying only enough pressure to keep the bit cutting. Do not force the drill or apply side pressure to elongate a hole. Let the tool do the work. _lb WARNING: Be prepared for binding at bit break- through. When these situations occur, drill has a tendency to grab and kick opposite to the direction of rotation and could cause loss of control when breaking through material. If not prepared, this loss of control can result in possible serious injury. [] When drilling hard, smooth surfaces, use a center punch to mark the desired hole location. This will prevent the drill bit from slipping off-center as the hole is started. [] When drilling metals, use a light oil on the drill bit to keep it from overheating. The oil will prolong the life of the bit and increase the drilling action. 17