Aside from their small size and light weight, Skil power drills feature a keyless chuck, which substantially reduces the amount of time necessary to change a drill bit. The keyless chuck feature also negates the possibility of losing a chuck key. Changing the drill bit in a Skil saw is fairly easy, but the drill bit must be properly positioned within the chuck's jaws to prevent the bit from rotating inside the jaws as the bit twists into the work surface.
Move the trigger lock lever to the "OFF" position to prevent inadvertently activating the drill when changing drill bits. The trigger lock lever is located on the side of the drill, just above the drill's trigger.
Open the drill's jaws by twisting the chuck collar counterclockwise while holding the chuck sleeve stationary. The chuck sleeve is the upper half of the chuck from which the drill bit protrudes. The chuck collar is the ribbed base of the chuck.
Pull the drill bit out of the chuck.
Insert a drill bit into the drill's jaws. If using a small bit, insert the base of the bit into the center of the three drill jaws only until the blade of the bit rests just above the drill's jaws. If using a large bit, insert the base of the bit into the center of the jaws as far as the bit will go.
Close the drill's jaws by twisting the chuck collar clockwise while holding the chuck sleeve stationary. Ensure that the drill bit is centered between the three jaws as they close. Twist the chuck collar until the jaws grasp the bit tightly to prevent the bit from slipping when using the drill.