Makita HR4510C Instruction Manual

Also see for HR4501C: Instruction manual Brochure & specs Instruction manual Instruction manual Instruction manual

Contents

8Fig.14If the bit cannot be pushed in, remove the bit. Pull thechuck cover down a couple of times. Then insert the bitagain. Turn the bit and push it in until it engages.After installing, always make sure that the bit is securelyheld in place by trying to pull it out.To remove the bit, pull the chuck cover down all the wayand pull the bit out.Fig.15Bit angle (when chipping, scaling ordemolishing)Fig.16Fig.17The bit can be secured at 12 different angles. Tochange the bit angle, depress the lock button and rotatethe change lever so that the pointer points tothe symbol. Turn the bit to the desired angle.Depress the lock button and rotate the change lever sothat the pointer points to the symbol. Then make surethat the bit is securely held in place by turning it slightly.Fig.18Fig.19Depth gaugeFig.20The depth gauge is convenient for drilling holes ofuniform depth. Loosen the clamp screw and adjust thedepth gauge to the desired depth. After adjusting,tighten the clamp screw firmly.NOTE:• The depth gauge cannot be used at the positionwhere the depth gauge strikes against the gearhousing/motor housing.OPERATIONHammer drilling operationFig.21Set the change lever to the symbol.Position the bit at the desired location for the hole, thenpull the switch trigger. Do not force the tool. Lightpressure gives best results. Keep the tool in positionand prevent it from slipping away from the hole.Do not apply more pressure when the hole becomesclogged with chips or particles. Instead, run the tool atan idle, then remove the bit partially from the hole. Byrepeating this several times, the hole will be cleaned outand normal drilling may be resumed.CAUTION:• When the bit begins to break through concrete or ifthe bit strikes reinforcing rods embedded in concrete,the tool may react dangerously. Maintain goodbalance and safe footing while holding the tool firmlywith both hands to prevent dangerous reaction.Blow-out bulb (optional accessory)Fig.22After drilling the hole, use the blow-out bulb to clean thedust out of the hole.Chipping/Scaling/DemolitionFig.23Set the change lever to the symbol.Hold the tool firmly with both hands. Turn the tool onand apply slight pressure on the tool so that the tool willnot bounce around, uncontrolled. Pressing very hard onthe tool will not increase the efficiency.MAINTENANCECAUTION:• Always be sure that the tool is switched off andunplugged before attempting to perform inspectionor maintenance.• Never use gasoline, benzine, thinner, alcohol orthe like. Discoloration, deformation or cracks mayresult.CAUTION:• This servicing should be performed by MakitaAuthorized Service Centers only.This tool requires no hourly or daily lubrication becauseit has a grease-packed lubrication system. It should belubricated every time the carbon brushes are replaced.Send the complete tool to Makita Authorized ServiceCenter for this lubrication service.To maintain product SAFETY and RELIABILITY, repairs,any other maintenance or adjustment should beperformed by Makita Authorized Service Centers,always using Makita replacement parts.OPTIONAL ACCESSORIESCAUTION:• These accessories or attachments arerecommended for use with your Makita toolspecified in this manual. The use of any otheraccessories or attachments might present a risk ofinjury to persons. Only use accessory orattachment for its stated purpose.If you need any assistance for more details regardingthese accessories, ask your local Makita Service Center.• SDS-Max Carbide-tipped bits• SDS-Max bull point• SDS-MAX cold chisel• SDS-MAX scaling chisel• SDS-MAX tile chisel• SDS-MAX clay spade• Hammer grease• Bit grease• Side handle• Side grip