Ridgid R8611501K Owners Manual - Page 9

OPERATION TWO-SPEED GEAR TRAIN See Figure 8, page 14. The drill has a two-speed gear train designed for drilling or driving at LO (1) or HI (2) speeds. A slide switch is located on top of the drill to select either LO (1) or HI (2) speed. When using drill in the LO (1) speed range, speed will decrease and unit will have more torque. When using drill in the HI (2) speed range, speed will increase and unit will have less torque. Use LO (1) speed for high torque applications and HI (2) speed for fast drilling or driving applications. NOTE: If you have difficulty changing from one gear range to the other, turn the chuck by hand until the gears engage. CAUTION: Never change gears while the tool is running. Failure to obey this caution could result in serious damage to the drill. ADJUSTABLE TORQUE CLUTCH This product is equipped with an adjustable torque clutch for driving different types of screws into different materials. The proper setting depends on the type of material and the size of screw you are using. ADJUSTING TORQUE See Figure 9, page 14. When using the hammer drill for various driving applications, it becomes necessary to increase or decrease the torque to help prevent the possibility of damaging screw heads, threads, workpiece, etc. In general, torque intensity should correspond to the screw diameter. If the torque is too high or the screws too small, the screws may be damaged or broken. The torque is adjusted by rotating the torque adjustment ring. The torque is greater when the torque adjustment ring is set on a higher setting. The torque is less when the torque adjustment ring is set on a lower setting. The proper setting depends on the type of material and the size of screw you are using. NOTE: The torque adjustment ring only functions in drive mode. There are twenty-four torque indicator settings located on the front of the drill.  Rotate the torque adjustment ring to the desired setting. • 1 - 4 For driving small screws • 5 - 8 For driving screws into soft material • 9 - 12 For driving screws into soft and hard materials • 13 - 16 For driving screws into hard wood • 17 - 24 For driving large screws MODE SELECTOR See Figure 10, page 14. The mode selector allows you to quickly switch from drill mode to drive or hammer mode. In general, drill mode should be used for drilling and other heavy duty applications. Drive mode should be used for driving screws. Hammer mode should be used for hammer drilling. NOTE: The hammer drill has not been designed for reverse hammering. Use carbide-tipped bits and select hammer mode when drilling in hard materials such as brick, tile, concrete, etc. Select drilling mode when drilling with twist drills, hole saws, etc., in soft materials. NOTE: When drilling in hammer mode, it is advisable to use LO (1) Speed. SELECTING DRILL, DRIVE, OR HAMMER MODE See Figure 10, page 14. Select the option that best matches the type of bit, fastener, and material you will be using.  Choose your application  Choose the correct speed: LO (1) or HI (2)  Choose the correct mode: drill, drive or hammer. INSTALLING/REMOVING BITS See Figure 11, page 15. To install:  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 open- ing 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. 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 12. This could cause the drill bit to be thrown from the drill, resulting in possible serious personal injury or damage to the chuck.  Tighten the chuck jaws securely on the bit. NOTE: Rotate the chuck body in the direction of the arrow marked LOCK to close the chuck jaws. Do not use a wrench to tighten or loosen the chuck jaws. 9 - English