Makita HR2420 User's Manual
Contents
1. 1970 Fulton Avenue Sacramento CA 95825 916 482 5197 7674 Clairemont Mesa Blvd San Diego CA 92111 858 278 4471 16735 Saticoy St Ste 105 Van Nuys CA 91406 818 782 2440 COLORADO 11839 E 51st Ave Denver CO 80239 2709 303 371 2850 CUSTOMER S RECORD When you need service Send complete tool prepaid to one of the Makita Factory Service Centers listed or to an Authorized Makita Service Center Be sure to attach a letter to the outside of the carton detailing the problem with your tool FLORIDA 750 East Sample Road Pompano Beach FL 33064 954 781 6333 GEORGIA 4680 River Green Parkway NW Duluth GA 30096 770 476 8911 ILLINOIS 1450 Feehanville Dr Mt Prospect IL 60056 6011 847 297 3100 MARYLAND 7397 Washington Boulevard Suite 104 Elkridge MD 21075 410 796 4401 MASSACHUSETTS 232 Providence Hwy Westwood MA 02090 781 461 9754 MINNESOTA 6427 Penn Ave South Richfield MN 55423 612 869 5199 MISSOURI 9876 Watson Road St Louis MO 63126 2221 314 909 9889 NEBRASKA 4129 S 84th St Omaha NE 68127 402 597 2925 NEVADA 3375 S Decatur Blvd Suites 22 24 Las Vegas NV 89102 702 368 4277 NEW JERSEY 251 Herrod Blvd Dayton NJ 08810 1539 609 655 1212 NEW YORK 4917 Genessee Street Cheektowaga NY 14225 716 685 9503 OREGON 828 19th Avenue N W Portland OR 97209 503 222 1823 PENNSYLVANIA 1704 Babcock Blvd Pittsburgh P2. 8 Tn kita Rotary Hammer 25 mm 1 MODEL HR2420 003095 DOUBLE INSULATION INSTRUCTION MANUAL A WARNING For your personal safety READ and UNDERSTAND before using SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE www makitatools com SPECIFICATIONS e Specifications may differ from country to country GENERAL SAFETY RULES Model Concrete Capacities Wood No load speed RPM Blows per minute Overall length Net weight For All Tools A WARNING Read and understand all HR2420 25 mm 1 13 mm 1 2 32 mm 1 1 4 O 1 050 min O 4 900 432 mm 17 2 4 kg 5 3 Ibs Manufacturer reserves the right to change specifications without notice USA002 2 instructions Failure to follow all instructions listed below may result in electric shock fire and or serious personal injury SAVE THESE INSTRUCTIONS Work Area 1 Keep your work area clean and well lit Cluttered benches and dark areas invite acci dents Do not operate power tools in explosive atmospheres such as in the presence of flammable liquids gases or dust Power tools create sparks which may ignite the dust or fumes 3 Keep bystanders children and visitors away while operating a power tool Distrac tions can cause you to lose control Electrical Safety 4 Double insulated tools are equipped with a polarized plug one blade is wider than the other This plug will fit in a polarized out
3. tool simply pull the switch trigger Tool speed is 1 Switch trigger increased by increasing pressure on the switch trigger Release the switch trigger to stop 03115 Reversing switch action This tool has a reversing switch to change the direction of rotation Move the reversing switch lever to the lt position A side for clockwise rotation or the gt position B side for counterclockwise rotation A CAUTION 1 Reversing switch lever e Always check the direction of rotation before operation 2 Switch trigger e Use the reversing switch only after the tool comes to a complete stop Changing the direction of rotation before the tool stops may damage the tool 03124 Selecting the action mode This tool employs an action mode changing knob Select one of the two modes suitable for your work needs by using this E knob Ug For rotation only turn the knob so that the arrow on the knob BS points toward the 8 mark on the tool body H a i For rotation with hammering turn the knob so that the arrow 1 Action mode changing knob on the knob points toward the 81 mark on the tool body A CAUTION e Always set the knob fully to your desired mode mark If you operate the tool with the knob positioned halfway between the mode marks the tool may be damaged ASSEMBLY 003143 1 Side grip 2 Clamp Screw 003150 1 Bit shank 2 Bit grease Torque limiter The torque limiter will actuate when a certain to
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5. A 15209 412 822 7370 PUERTO RICO 200 Guayama St Hato Rey PR 00917 787 250 8776 TENNESSEE 1120 Elm Hill P Suile 170 Nashville TN 372 615 248 3321 TEXAS 12801 Stemmons Fwy Ste 809 Farmers Branch TX 75234 972 243 1150 12701 Directors Dr Stafford TX 77477 3701 281 565 8665 3453 IH 35 North Ste 101 San Antonio TX 78219 210 228 0676 WISCONSIN Lincoln Plaza Shopping Ctr 2245 S 108th St West Allis WI 53227 414 541 4776 Date Purchased Dealers Name amp Address Model No 15 WARNING Some dust created by power sanding sawing grinding drilling and other construction activities contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Some examples of these chemicals are e lead from lead based paints e crystalline silica from bricks and cement and other masonry products and e arsenic and chromium from chemically treated lumber Your risk from these exposures varies depending on how often you do this type of work To reduce your exposure to these chemicals work in a well ventilated area and work with approved safety equipment such as those dust masks that are specially designed to filter out microscopic particles MAKITA LIMITED ONE YEAR WARRANTY Warranty Policy Every Makita tool is thoroughly inspected and tested before leaving the factory It is warranted to be free of defects from workmanship and materials for t
6. c carrying case Memo 12 A A A A A AO A RA A EU etrarsa Makita U S A Inc 14930 Northam Street La Mirada CA 90638 5753 A AA ge er MAIL THIS PORTION Your answers to the following questions are appreciated 1 This product was purchased from 3 How did you learn about this product mM Home Center mM Other Magazine Radio Hardware Lumber Store From Dealer Exhibition mM Tool Distributor Newspaper From Friend Industrial Supply Store Display Previous Usage Construction Supply Catalog Other 2 Use of the product is intended for 4 Most favored points are mM Construction Trade Design Repair Service Industrial Maintenance Features Durability Home Maintenance Size Power Hobby Price Other Other Makita Brand 5 Any comments DATE PURCHASED MODEL NO MONTH ae EE MR STATUS INTL LAST NAME COMPANY NAME Married Single ra STREET ADRESS CITY ZIP CODE BE SURE TO COMPLETE THE CUSTOMER S PORTION OF THIS FORM AND RETAIN FOR YOUR RECORDS Please return this portion by facsimile or mail Facsimile No 714 522 8133 nn FACTORY SERVICE CENTERS 1 800 4 MAKITA RETAIN THIS PORTION FOR YOUR RECORDS ARIZONA 3707 E Broadway Rd Ste 6 Phoenix AZ 85040 602 437 2850 CALIFORNIA 41850 Christy St Fremont CA 94538 5107 510 657 9881 14930 Northam St La Mirada CA 90638 5753 714 522 8088
7. he period of ONE YEAR from the date of original purchase Should any trouble develop during this one year period return the COMPLETE tool freight prepaid to one of Makita s Factory or Authorized Service Centers If inspection shows the trouble is caused by defective workmanship or material Makita will repair or at our option replace without charge This Warranty does not apply where e repairs have been made or attempted by others e repairs are required because of normal wear and tear e the tool has been abused misused or improperly maintained e alterations have been made to the tool IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES FROM THE SALE OR USE OF THE PRODUCT THIS DISCLAIMER APPLIES BOTH DURING AND AFTER THE TERM OF THIS WARRANTY MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A SPECIFIC PURPOSE AFTER THE ONE YEAR TERM OF THIS WARRANTY This Warranty gives you specific legal rights and you may also have other rights which vary from state to state Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you Some states do not allow limitation on how long an implied warranty lasts so the above limitation may not apply to you Makita Corporation 3 11 8 Sumiyoshi cho Anjo Aichi 446 8502 Japan 884089D
8. ies or storing the tool Such preventive safety measures reduce the risk of starting the tool accidentally Store idle tools out of reach of children and other untrained persons Tools are dangerous in the hands of untrained users Maintain tools with care Keep cutting tools sharp and clean Properly maintained tools with sharp cutting edges are less likely to bind and are easier to control Check for misalignment or binding of moving parts breakage of parts and any other condition that may affect the tools operation If damaged have the tool ser viced before using Many accidents are caused by poorly maintained tools Use only accessories that are recom mended by the manufacturer for your model Accessories that may be suitable for tenance performed by unqualified personnel one tool may become hazardous when used could result in a risk of injury on another tool 24 When servicing a tool use only identical SERVICE replacement parts Follow instructions in the Maintenance section of this manual Use of unauthorized parts or failure to follow Maintenance instructions may create a risk of electric shock or injury USE PROPER EXTENSION CORD Make sure your extension cord is in good condition When using an extension cord be sure to use one heavy enough to carry the current your product will draw An undersized cord will cause a drop in line voltage resulting in loss of power and overheating Table 1 shows the correct size t
9. ightness of screws carefully before operation In cold weather or when the tool has not been used for a long time let the tool warm up for a while by operating it under no load This will loosen up the lubrica tion Without proper warm up hammering operation is difficult Always be sure you have a firm footing Be sure no one is below when using the tool in high locations Hold the tool firmly with both hands A WARNING MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury 10 11 12 13 Keep hands away from moving parts Do not leave the tool running Operate the tool only when hand held Do not point the tool at any one in the area when operating The bit could fly out and injure someone seriously Do not touch the bit or parts close to the bit immediately after operation they may be extremely hot and could burn your skin Some material contains chemicals which may be toxic Take caution to prevent dust inhalation and skin contact Follow mate rial supplier safety data SAVE THESE INSTRUCTIONS FUNCTIONAL A CAUTION DESCRIPTION e Always be sure that the tool is switched off and unplugged before adjusting or checking function on the tool 003108 Switch action A CAUTION e Before plugging in the tool always check to see that the switch trigger actuates properly and returns to the OFF position when released To start the
10. let only one way If the plug does not fit fully in the outlet reverse the plug If it still does not fit contact a qualified elec trician to install a polarized outlet Do not change the plug in any way Double insula tion El eliminates the need for the three wire grounded power cord and grounded power supply system Avoid body contact with grounded sur faces such as pipes radiators ranges and refrigerators There is an increased risk of electric shock if your body is grounded Do not expose power tools to rain or wet conditions Water entering a power tool will increase the risk of electric shock Do not abuse the cord Never use the cord to carry the tools or pull the plug from an outlet Keep cord away from heat oil sharp edges or moving parts Replace damaged cords immediately Damaged cords increase the risk of electric shock When operating a power tool outside use an outdoor extension cord marked W A or W These cords are rated for outdoor use and reduce the risk of electric shock Personal Safety 9 10 11 12 Stay alert watch what you are doing and use common sense when operating a power tool Do not use tool while tired or under the influence of drugs alcohol or medication A moment of inattention while operating power tools may result in serious personal injury Dress properly Do not wear loose cloth ing or jewelry Contain long hair Keep your hair clothing and gloves a
11. nsert the bit again Turn the bit and push it in until it engages After installing always make sure that the bit is securely held in place by trying to pull it out To remove the bit pull the chuck cover down all the way and pull the bit out Depth gauge The depth gauge is convenient for drilling holes of uniform depth Insert the depth gauge into the hole in the grip base Adjust the depth gauge to the desired depth and then tighten the clamp screw to secure the depth gauge NOTE e The depth gauge cannot be used at the position where the depth gauge strikes against the tool body Dust cup optional accessory Use the dust cup to prevent dust from falling over the tool and on yourself when performing overhead drilling opera tions Attach the dust cup to the bit as shown in the figure The size of bits which the dust cup can be attached to is as follows gt Bitdiameter_ 6 mm 1 4 14 5 mm 9 16 12 mm 15 32 16 mm 5 8 OPERATION 1 Blow out bulb 1 Drill chuck assembly 002449 003219 Hammer drilling operation Set the action mode changing knob to the 81 symbol Position the bit at the desired location for the hole then pull the switch trigger Do not force the tool Light pressure gives best results Keep the tool in position and prevent it from slip ping away from the hole Do not apply more pressure when the hole becomes clogged with chips or particles Instead run the t
12. o use depending on cord length and nameplate ampere rating If in doubt use the next heavier gage The smaller the gage num ber the heavier the cord 23 Tool service must be performed only by qualified repair personnel Service or main Table 1 Minimum gage for cord Ampere Ratin Total length of cord in feet 3 120 V 25 ft 50 ft 100 ft 150 ft Not More Than AWG 18 1 EE m SAS Not Recommended SPECIFIC SAFETY RULES USBO10 2 DO NOT let comfort or familiarity with product gained from repeated use replace strict adherence to rotary hammer safety rules If you use this tool unsafely or incorrectly you can suffer serious personal injury 1 Hold tools by insulated gripping surfaces to high intensity noise can cause hearing when performing an operation where the loss cutting tool may contact hidden wiring or its own cord Contact with a live wire will make exposed metal parts of the tool live and shock the operator 3 Wear a hard hat safety helmet safety glasses and or face shield Ordinary eye or sun glasses are NOT safety glasses It is also highly recommended that you wear 2 Wear ear protectors when using the tool a dust mask and thickly padded gloves lor ext enced periods 1c Ongemiexporuls 4 Be sure the bit is secured in place before operation Under normal operation the tool is designed to produce vibration The screws can come loose easily causing a breakdown or accident Check t
13. ool at an idle then remove the bit partially from the hole By repeating this sev eral times the hole will be cleaned out and normal drilling may be resumed A CAUTION e There is a tremendous and sudden twisting force exerted 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 the concrete Always use the side grip auxiliary handle and firmly hold the tool by both side grip and switch handle during operations Failure to do so may result in the loss of control of the tool and potentially severe injury Blow out bulb optional accessory After drilling the hole use the blow out bulb to clean the dust out of the hole Drilling in wood or metal Use the optional drill chuck assembly When installing it refer to Installing or removing the bit described on the previous page Set the action mode changing knob to rotation only You can drill up to 13 mm 1 2 diameter in metal and up to 32 mm 1 1 4 diameter in wood MAINTENANCE A CAUTION Never use rotation with hammering when the drill chuck assembly is installed on the tool The drill chuck assembly may be damaged Also the drill chuck will come off when reversing the tool Pressing excessively on the tool will not speed up the drilling In fact this excessive pressure will only serve to damage the tip of your bit decrease the tool performance and
14. rque level is reached The motor will disengage from the output shaft When this happens the bit will stop turning A CAUTION e As soon as the torque limiter actuates switch off the tool immediately This will help prevent premature wear of the tool e Hole saws core bits diamond core bits etc cannot be used with this tool They tend to pinch or catch easily in the hole This will cause the torque limiter to actuate too frequently A CAUTION e Always be sure that the tool is switched off and unplugged before carrying out any work on the tool Side grip auxiliary handle The side grip swings around to either side allowing easy handling of the tool in any position Loosen the side grip by turning it counterclockwise swing it to the desired position and then tighten it by turning clockwise Bit grease optional accessory Coat the bit shank head beforehand with a small amount of bit grease about 0 5 1 g 0 02 0 04 oz This chuck lubri cation assures smooth action and longer service life Installing or removing the bit Clean the bit shank and apply bit grease before installing the bit 003158 1 Bit 2 Chuck cover 003163 1 Bit 2 Chuck cover 003181 1 Clamp screw 2 Depth gauge 003186 1 Dust cup 00 Insert the bit into the tool Turn the bit and push it in until it engages If the bit cannot be pushed in remove the bit Pull the chuck cover down a couple of times Then i
15. shorten the service life of the tool There is a tremendous twisting force exerted on the tool bit at the time of hole breakthrough Hold the tool firmly and exert care when the bit begins to break through the workpiece A stuck bit can be removed simply by setting the reversing switch to reverse rotation in order to back out However the tool may back out abruptly if you do not hold it firmly Always secure small workpieces in a vise or similar hold down device A CAUTION Always be sure that the tool is switched off and unplugged before attempting to perform inspection or maintenance To maintain product SAFETY and RELIABILITY repairs car bon brush inspection and replacement any other mainte nance or adjustment should be performed by Makita Authorized or Factory Service Centers always using Makita replacement parts ACCESSORIES A CAUTION These accessories or attachments are recommended for use with your Makita tool specified in this manual The use of any other accessories or attachments might present a risk of injury to persons Only use accessory or attachment for its stated purpose If you need any assistance for more details regarding these accessories ask your local Makita service center SDS Plus Carbide tipped bits Drill chuck assembly Drill chuck S13 Chuck adapter Chuck key S13 Bit grease Grip assembly Depth gauge Blow out bulb Dust cup Dust extractor attachment Safety goggles Plasti
16. way from moving parts Loose clothes jewelry or long hair can be caught in moving parts Avoid accidental starting Be sure switch is off before plugging in Carrying tools with your finger on the switch or plugging in tools that have the switch on invites accidents Remove adjusting keys or wrenches before turning the tool on A wrench or a key that is left attached to a rotating part of the tool may result in personal injury 13 14 Do not overreach Keep proper footing and balance at all times Proper footing and balance enables better control of the tool in unexpected situations Use safety equipment Always wear eye protection Dust mask non skid safety shoes hard hat or hearing protection must be used for appropriate conditions Ordinary eye or sun glasses are NOT eye protection Tool Use and Care 15 16 17 18 19 20 21 22 Use clamps or other practical way to secure and support the workpiece to a stable platform Holding the work by hand or against your body is unstable and may lead to loss of control Do not force tool Use the correct tool for your application The correct tool will do the job better and safer at the rate for which it is designed Do not use tool if switch does not turn it on or off Any tool that cannot be controlled with the switch is dangerous and must be repaired Disconnect the plug from the power source before making any adjustments changing accessor
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