Dewalt D25773K Instruction Manual - Page 7

ASSEMBLY AND ADJUSTMENTS WARNING: To reduce the risk of serious personal injury, turn unit off and disconnect it from power source before making any adjustments or removing/installing attachments or accessories. An accidental start-up can cause injury. Side Handle (Fig. B) WARNING: To reduce the risk of personal injury, ALWAYS operate the tool with the side handle properly installed. Failure to do so may result in the side handle slipping during tool operation and subsequent loss of control. Hold tool with both hands to maximize control.. The side handle 2 clamps to the front of the gear case and may be rotated 360˚ to permit right- or left-hand use. Mounting the Straight Side Handle (Fig. B) 1. Widen the ring opening of the side handle 2 by rotating it counter clockwise. 2. Slide the assembly onto the nose of the tool, placing the steel ring 12 onto the collar 3 , past the bit holder and sleeve. 3. Rotate the side handle assembly to the desired position. For hammerdrilling horizontally with a heavy drill bit, place the side handle assembly at an angle of approximately 20° to the tool for optimum control. 4. Lock the side handle mounting assembly in place by securely tightening the handle 2 rotating it clockwise so that the assembly will not rotate. Fig. B 12 English Inserting and Removing SDS MAX Bits (Fig. C) 1. Insert bit in the bit holder 6 and apply downward pressure while rotating to secure the bit into place. The bit shank must be clean. 2. Ensure the bit is properly engaged. NOTE: The bit needs to move several centimeters in and out of the bit holder 6 when properly engaged. Fig. C 7 6 3. To remove the bit, pull back the locking sleeve 7 and pull the bit out. OPERATION WARNING: To reduce the risk of serious personal injury, turn unit off and disconnect it from power source before making any adjustments or removing/installing attachments or accessories. An accidental start-up can cause injury. Proper Hand Position (Fig. D) WARNING: To reduce the risk of serious personal injury,  ALWAYS use proper hand position as shown. WARNING: To reduce the risk of serious personal injury, ALWAYS hold securely in anticipation of a sudden reaction. Proper hand position requires one hand on the mounted side handle 2 , with the other hand on the main handle 5 . Fig. D 3 2 5 2 Bit and Bit Holder WARNING: Burn Hazard. ALWAYS wear gloves when changing bits. Accessible metal parts on the tool and bits may get extremely hot during operation. Small bits of broken material may damage bare hands. WARNING: Do not attempt to tighten or loosen drill bits (or any other accessory) by gripping the front part of the chuck and turning the tool on. Damage to the chuck and personal injury may occur. The rotary hammer can be fitted with various chisel bits depending on the desired application. Use sharp drill bits only. SHOCKS Active Vibration Control® System For best vibration control, hold the tool as described in Proper Hand Position and apply just enough pressure so the damping device on the main handle is approximately mid stroke. The hammer only needs enough pressure to engage the active vibration control. Applying too much pressure will not make the tool actuate faster and active vibration control will not engage. 5