Makita DHP481 Instruction Manual

Also see for DHP481: Instruction manual Instruction manual Original instructions Instruction manual Instruction manual

Contents

8Speed changeCAUTION:• Always set the speed change lever fully to thecorrect position. If you operate the tool with thespeed change lever positioned halfway betweenthe "1" side and, "2" side, the tool may bedamaged.• Do not use the speed change lever while the toolis running. The tool may be damaged.Fig.8To change the speed, first switch off the tool and thenslide the speed change lever to the "2" side for highspeed or, "1" side for low speed. Be sure that the speedchange lever is set to the correct position beforeoperation. Use the right speed for your job.Selecting the action modeCAUTION:• Always set the ring correctly to your desired modemark. If you operate the tool with the ringpositioned halfway between the mode marks, thetool may be damaged.Fig.9This tool employs an action mode changing ring. Selectone of the three modes suitable for your work needs byusing this ring.For rotation only, turn the ring so that the arrow on thetool body points toward the mark on the ring.For rotation with hammering, turn the ring so that thearrow points toward the mark on the ring.For rotation with clutch, turn the ring so that the arrowpoints toward the mark on the ring.Adjusting the fastening torque(screwdriver mode " ")Fig.10The fastening torque can be adjusted in 21 steps byturning the adjusting ring so that its graduations arealigned with the pointer on the tool body.First, slide the action mode change lever to the positionof symbol.The fastening torque is minimum when the number 1 isaligned with the pointer, and maximum when themarking is aligned with the pointer. The clutch will slip atvarious torque levels when set at the number 1 to 21.Before actual operation, drive a trial screw into yourmaterial or a piece of duplicate material to determinewhich torque level is required for a particular application.NOTE:• The adjusting ring does not lock when the pointeris positioned only halfway between thegraduations.ASSEMBLYCAUTION:• Always be sure that the tool is switched off and thebattery cartridge is removed before carrying outany work on the tool.Installing side grip (auxiliary handle)Fig.11Always use the side grip to ensure operating safety.Insert the side grip so that the groove on the arm fit inone of the counter parts on the tool. Then tighten thegrip by turning clockwise.Depending the operations, you can install the side gripeither right or left side of the tool.Installing or removing driver bit or drill bitFig.12Turn the sleeve counterclockwise to open the chuckjaws. Place the bit in the chuck as far as it will go. Turnthe sleeve clockwise to tighten the chuck. To removethe bit, turn the sleeve counterclockwise.Installing bit holderFig.13Fit the bit holder into the protrusion at the tool foot oneither right or left side and secure it with a screw.When not using the driver bit, keep it in the bit holders.Bits 45 mm long can be kept there.Adjustable depth rodFig.14The adjustable depth rod is used to drill holes of uniformdepth. Loosen the clamp screw, set to desired position,then tighten the clamp screw.HookFig.15The hook is convenient for temporarily hanging the tool.This can be installed on either side of the tool.To install the hook, insert it into a groove in the toolhousing on either side and then secure it with a screw.To remove, loosen the screw and then take it out.OPERATIONFig.16Hammer drilling operationCAUTION:• There is a tremendous and sudden twisting forceexerted on the tool/bit at the time of hole break-through,when the hole becomes clogged with chips and particles,or when striking reinforcing rods embedded in theconcrete. Always use the side grip (auxiliary handle) andfirmly hold the tool by both side grip and switch handleduring operations. Failure to do so may result in the lossof control of the tool and potentially severe injury.