4FUNCTIONAL DESCRIPTIONCAUTION:• Always be sure that the tool is switched off andunplugged before adjusting or checking function onthe tool.Switch action12002407CAUTION:• Before plugging in the tool, always check to seethat the switch trigger actuates properly andreturns to the "OFF" position when released.• Switch can be locked in "ON" position for ease ofoperator comfort during extended use. Applycaution when locking tool in "ON" position andmaintain firm grasp on tool.To start the tool, simply pull the switch trigger. Toolspeed is increased by increasing pressure on the switchtrigger. Release the switch trigger to stop.For continuous operation, pull the switch trigger andthen push in the lock button.To stop the tool from the locked position, pull the switchtrigger fully, then release it.Reversing switch action1002413This tool has a reversing switch to change the directionof rotation. Move the reversing switch lever tothe position for clockwise rotation or the position forcounterclockwise rotation.When the reversing switch lever is in the neutral position,the switch trigger cannot be pulled.CAUTION:• Always check the direction of rotation beforeoperation.• Use the reversing switch only after the tool comesto a complete stop. Changing the direction ofrotation before the tool stops may damage the tool.• When not operating the tool, always set thereversing switch lever to the neutral position.• Pulling the trigger hard when the reversing switchlever is in the neutral position can cause switchbreakage.Speed change1002417Two speed ranges can be preselected with the speedchange lever.To change the speed, press the speed change lever andslide it to the "LO" position for low speed or the "HI"position for high speed. If the speed change lever doesnot slide easily, turn the chuck slightly in either directionwhile sliding the lever.Be sure that the speed change lever is set to the correctposition before operation. Use the right speed for yourjob.CAUTION:• Always set the speed change lever fully to thecorrect position. If you operate the tool with thespeed change lever positioned halfway, the toolmay be damaged.• Do not use the speed change lever while the tool isrunning. The tool may be damaged.Selecting the action mode12002424This tool has an action mode changing knob.1. Diamondmarking2. Action modechanging knob1. Change lever1. Reversingswitch lever1. Switch trigger2. Lock button