FEATURES

KNOW YOUR HAMMER DRILL

See Figure 1.

The safe use of this product requires an understanding of the information on the tool and in this operator’s manual as well as a knowledge of the project you are attempting. Before use of this product, familiarize yourself with all operating features and safety rules.

AUXILIARY HANDLE ASSEMBLY

Your drill is equipped with an auxiliary handle assembly for ease of operation and to prevent loss of control.

BLOWS PER MINUTE

This tool features an impact speed of 0-6,400 BPM in LO

(1)speed and 0-24,000 BPM in HI (2) speed. BPM (Blows Per Minute) is the number of impacts per minute.

CHARGER

The charger has a key-hole hanging feature for convenient, space-saving storage. Screws should be installed so that the center distance is 4-1/8 in.

DIRECTION OF ROTATION SELECTOR

(FORWARD/REVERSE/CENTER LOCK)

Your drill has a direction of rotation (forward/reverse/center lock) selector located above the switch trigger for changing the direction of bit rotation. Setting the switch trigger in the OFF (center lock) position helps reduce the possibility of accidental starting when not in use.

MODE CHANGE RING

Using the mode change ring, the operator can select either hammer mode, drive mode, or drilling mode.

KEYLESS CHUCK

The keyless chuck allows you to hand-tighten or release the drill bit in the chuck jaws.

TORQUE ADJUSTMENT RING

Your drill has a 24-position clutch. The torque adjustment ring can be turned to select the right amount of torque for your application.

TWO-SPEED GEAR TRAIN

The two-speed gear train is designed for drilling or driving at LO (1) or HI (2) speeds. A slide switch is located on top of your drill for selecting either LO (1) or HI (2) speed.

VARIABLE SPEED

The variable speed switch trigger delivers higher speed with increased trigger pressure and lower speed with decreased trigger pressure.

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RIDGID R851150 manual Know Your Hammer Drill, Auxiliary Handle Assembly, Blows PER Minute, Charger, Mode Change Ring