TO START AND STOP TOOL Confirm that the trigger switch is “OFF” before connecting the tool to the power source. 1. Confirm that the switch is “OFF”. Make sure that the power circuit voltage is the same as that shown on the specification plate. Connect the drill to the power circuit. 2. Squeeze the TRIGGER SWITCH (A) Fig. 1 to start the motor. Release the trigger switch to stop the motor. 3. A switch-lock button (B) Fig. 1 is provided to keep the motor running without holding the trigger switch “ON”. TO LOCK the tool in the “ON” position, squeeze the trigger switch as far as it will go, push in the switch-lock button, and release the trigger switch. TO RELEASE the switch-lock button, squeeze the trigger switch and release. NOTE: The switch-lock button can be engaged only when the tool is running at maximum speed. Fig. 1 A BC Never use the switch-lock button when the tool may have to be stopped suddenly. 4. This tool will operate in either the forward direction (clockwise rotation), or the reverse direction (counter-clockwise rotation). For counterclockwise rotation, stop the motor by releasing the trigger switch and push the reversing switch (C) Fig. 1 toward the right side of the drill, or in the opposite direction for clockwise rotation. Never attempt to change direction of rotation while the switch is “ON”. To do so may damage interlock feature built into switch. Be sure that the switch is “OFF” and the motor has completely stopped before changing the direction of rotation. 5. VARIABLE SPEED – As the trigger switch is squeezed, the tool speed increases. 6 911216- 12-03-03.qxd 12/3/03 8:40 AM Page 7 TO CHANGE BIT HOLDER 1. Pull the Depth Stop Assembly (A) Fig. 2 from the clutch housing. 2. Pull the bit holder (C) Fig. 2 out. If it is difficult to remove, grip it with pliers and pull. NOTE: Bit (D) Fig. 2 may be removed from the bit holder by pulling it straight out. 3. Push new bit holder into the spindle, snapping it into place. 4. Replace Depth Stop Assembly and adjust the depth stop. (See “ADJUST DEPTH STOP“ below.) ADJUST DEPTH STOP 1. Turn the adjusting collar until the end of the bit extends 3/32" beyond the end of the depth stop. Do not push the bit holder in. This will engage the internal drive. 2. Drive a test fastener in a scrap workpiece. Examine the results of the drive and make additional depth stop adjustments: a) To increase the depth of drive, repeat STEP 1 and turn the adjusting collar so that the end of the bit extends further than the end of the depth stop. b) To decrease depth of drive, repeat STEP 1 and turn the adjusting collar so that the end of the bit is closer to the end of depth stop. Each click of the adjusting collar results in .007" change in the depth of drive. 3. Repeat STEPS 1 and 2 until the desired result is obtained. DRIVING DRYWALL SCREWS NOTE: Maximum size screw for use with this tool is #12 Wood Screw. 1. Install a drywall bit and bit holder in the screwdriver. 2. Set the screwdriver for the correct rotation. 3. Start the screwdriver and place a drywall screw on the bit. Do not exert pressure on the screw while performing this operation. 4. Place the end of the screw in the desired location and remove your fingers. 5. Apply forward pressure to the drive screw until the depth stop rests on the surface of the work. Adjust the depth stop so that the fastener head is sunk just below the surface of the wallboard. Fig. 2 A CD 7 911216- 12-03-03.qxd 12/3/03 8:40 AM Page 8 TO REMOVE SCREWS 1. Remove the Depth Stop Assembly. 2. Install a proper bit that fits the screw. 3. Set the screwdriver for reverse rotation. 4. Place the bit on the screw and apply forward pressure. 5. Start the screwdriver. MAINTENANCE CHECK CLUTCH CONDITION Periodically, check the screwdriver clutch jaws for wear. To make this inspection, remove the clutch housing (A) Fig. 3 from the power unit. NOTE: The clutch housing is attached to the power unit with left-hand threads. The depth stop assembly may be removed from the clutch housing by pulling it straight off. Remove the clutch housing by turning the clutch housing clockwise. NOTE: Be careful not to lose the small spring that is in the end of the power unit spindle shaft. Note the condition of the 3-jaw clutch-faces on the power unit and screwdriver mechanism. If they are badly rounded where the angular face meets the top surface, or appear otherwise worn or faulty, or if the clutch elements are not securely held in place by the snap rings, return the entire tool to your AUTHORIZED PORTER-CABLE SERVICE STATION for service. Proceed if the jaws are not seriously worn and there are no other apparent faults in the mechanism. Clean the mechanism and all internal areas of chips or other foreign material and brush a thin coat of PORTER-CABLE gear lubricant on the clutch elements and surrounding areas. Attach the screwdriver mechanism to the power unit. Confirm that the spring is in the spindle shaft. NOTE: The housing uses left-hand threads. A Fig. 3 8 911216...