4FUNCTIONAL DESCRIPTIONCAUTION:• Always be sure that the tool is switched off andunplugged before adjusting or checking functionon the tool.Switch action1 2013437CAUTION:• Before plugging in the tool, always check to seethat the switch trigger actuates properly andreturns to the "OFF" position when released.To start the tool, simply pull the switch trigger. Releasethe switch trigger to stop.For continuous operation, pull the switch trigger andthen push in the lock button and then release the switchtrigger.To stop the tool from the locked position, pull the switchtrigger fully, then release it.ASSEMBLYCAUTION:• Always be sure that the tool is switched off andunplugged before carrying out any work on thetool.Installing top grip (auxiliary handle)013433Screw the top grip on the tool securely.Installing or removing drill bit1 2013434To install the bit, place it in the chuck as far as it will go.Tighten the chuck by hand. Place the chuck key in eachof the three holes and tighten clockwise. Be sure totighten all three chuck holes evenly.To remove the bit, turn the chuck key counterclockwisein just one hole, then loosen the chuck by hand.After using the chuck key, be sure to return to theoriginal position.Adjusting depth of drilling12013435The depth gauge is convenient for drilling holes ofuniform depth.Loosen the wing bolt and adjust the depth gauge to thedesired depth. After adjusting, tighten the wing bolt.1. Depth gauge2. Wing bolt1. Tighten2. Chuck key1. Switch trigger2. Lock button