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2. When attaching accessories in the drill chuck, hand tighten the keyless chuck firmly. : Drill may stall (if overloaded or improperly used) causing a twist. Always expect the stall. Grip the drill firmly to control the twisting action and prevent loss of control which could cause personal injury. If a stall does occur, release the trigger immediately and determine the reason for the stall before re-starting. E 9 90550130 PC1800HD hammer drill 4/3/09 2:40 PM Page 10 Operating Instructions Trigg