6warm-up, hammering operation is difficult.8. Always be sure you have a firm footing.Be sure no one is below when using the tool inhigh locations.9. Hold the tool firmly with both hands.10. Keep hands away from moving parts.11. Do not leave the tool running. Operate the toolonly when hand-held.12. Do not point the tool at any one in the areawhen operating. The bit could fly out andinjure someone seriously.13. Do not touch the bit or parts close to the bitimmediately after operation; they may beextremely hot and could burn your skin.14. Some material contains chemicals which maybe toxic. Take caution to prevent dustinhalation and skin contact. Follow materialsupplier safety data.SAVE THESE INSTRUCTIONS.WARNING:MISUSE or failure to follow the safety rules stated inthis instruction manual may cause serious personalinjury.FUNCTIONAL DESCRIPTIONCAUTION:• Always be sure that the tool is switched off andunplugged before adjusting or checking function onthe tool.Switch actionFig.1CAUTION:• 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. Toolspeed is increased by increasing pressure on the switchtrigger. Release the switch trigger to stop.Lighting up the lampsFor Models HR2811F, HR2811FTFig.2CAUTION:• Do not look in the light or see the source of lightdirectly.To turn on the lamp, pull the trigger. Release the triggerto turn it off.NOTE:• Use a dry cloth to wipe the dirt off the lens of lamp.Be careful not to scratch the lens of lamp, or it maylower the illumination.Reversing switch actionFig.3This tool has a reversing switch to change the directionof rotation. Depress the reversing switch lever from the Aside for clockwise rotation or from the B side forcounterclockwise rotation.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 you operate the tool in counterclockwiserotation, the switch trigger is pulled only halfwayand the tool runs at half speed.Changing the quick change chuck forSDS-plusFor model HR2810T, HR2811FTThe quick change chuck for SDS-plus can be easilyexchanged for the quick change drill chuck.Removing the quick change chuck for SDS-plusFig.4CAUTION:• Before removing the quick change chuck forSDS-plus, always remove the bit.Grasp the change cover of the quick change chuck forSDS-plus and turn in the direction of the arrow until thechange cover line moves from the symbol to thesymbol. Pull forcefully in the direction of the arrow.Attaching the quick change drill chuckFig.5Check the line of the quick change drill chuck shows thesymbol. Grasp the change cover of the quick changedrill chuck and set the line to the symbol.Place the quick change drill chuck on the spindle of thetool.Grasp the change cover of the quick change drill chuckand turn the change cover line to the symbol until aclick can clearly be heard.Selecting the action modeFor Model HR2800Fig.6This tool employs an action mode changing knob. Selectone of the two modes suitable for your work needs byusing this knob.For rotation only, turn the knob so that the arrow on theknob points toward the symbol on the tool body.For rotation with hammering, turn the knob so that thearrow on the knob points toward the symbol on the toolbody.CAUTION:• Always set the knob fully to your desired modesymbol. If you operate the tool with the knobpositioned halfway between the mode symbols, the