Ryobi HP612K Trilingual (CD100) - Page 9

OPERATION To stop the drill, release the switch trigger and allow the chuck to come to a complete stop. NOTE: The drill will not run unless the direction of rotation selector is pushed fully to the left or right. Avoid running the drill at low speeds for extended periods of time. Running at low speeds under constant usage may cause the drill to become overheated. If this occurs, cool the drill by running it without a load and at full speed. KEYLESS CHUCK See Figure 4, page 12. The drill has a keyless chuck to tighten or release drill bits in the chuck jaws. The arrows on the chuck indicate which direction to rotate the chuck body in order to LOCK (tighten) or UNLOCK (release) the drill bit. WARNING: Do not hold the chuck body with one hand and use the power of the drill to tighten the chuck jaws on the drill bit. The chuck body could slip in your hand, or your hand could slip and come in contact with the rotating drill bit. This could cause an accident resulting in serious personal injury. MAG TRAY™ (SCREW HOLDER) See Figure 5, page 12. The magnetic tray conveniently stores bits or other small parts. INSTALLING BITS See Figures 6 - 7, page 13.  Lock the switch trigger by placing the direction of rotation selector in the center position.  Open or close the chuck jaws to a point where the opening is slightly larger than the bit size you intend to use. Also, raise the front of the drill slightly to keep the bit from falling out of the chuck jaws.  Insert the drill bit.  Tighten the chuck jaws on the drill bit. WARNING: Make sure to insert the drill bit straight into the chuck jaws. Do not insert the drill bit into the chuck jaws at an angle then tighten, as shown in figure 7. This could cause the drill bit to be thrown from the drill, resulting in possible serious personal injury or damage to the chuck.  Rotate the chuck clockwise to tighten the chuck jaws securely on the bit. Note: Rotate the chuck body in the direction of the arrow marked LOCK to tighten the chuck jaws. Do not use a wrench to tighten or loosen the chuck jaws. REMOVING BITS See Figure 6, page 13.  Lock the switch trigger by placing the direction of rotation selector in the center position.  Rotate the chuck sleeve counter clockwise to open the chuck jaws. Note: Rotate the chuck body in the direction of the arrow marked UNLOCK to loosen the chuck jaws. Do not use a wrench to tighten or loosen the chuck jaws.  Remove the drill bit. DRILLING See Figure 8, page 13.  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. WARNING: Be prepared for binding at bit breakthrough. 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.  If the bit jams in the workpiece or if the drill stalls, stop the tool immediately. Remove the bit from the workpiece and determine the reason for jamming. NOTE: This drill has an electric brake. When the switch trigger is released, the chuck stops turning. When the brake is functioning properly, sparks will be visible through the vent slots on the housing. This is normal and is the action of the brake. 9 - English