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Rotary Hammer
25 mm (1”)
MODEL HR2420
003095
DOUBLE
INSULATION
INSTR U CTION MANU AL
WARNING:
For your personal safety, READ and UNDERSTAND before using.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
www.makitatools.com
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SPECIFICATIONS Model HR2420 Concrete 25 mm (1”) Capacities Steel 13 mm (1/2”) Wood 32 mm (1-1/4”) No load speed (RPM) 0 - 1,050/min. Blows per minute 0 - 4,900 Overall length 432 mm (17”) Net weight 2.4 kg (5.3 lbs) • Manufacturer reserves the right to change specifications without notice. Specifications may differ from country to country. GENERAL SAFETY RULES USA002-2 (For All Tools) WARNING: Read and understand all instructions. Failure to follow all instructions listed below, may result in
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trician to install a polarized outlet. Do not 13. Do not overreach. Keep proper footing change the plug in any way. Double insula- and balance at all times. Proper footing and balance enables better control of the tool in tion eliminates the need for the three wire unexpected situations. grounded power cord and grounded power supply system. 14. Use safety equipment. Always wear eye protection. Dust mask, non-skid safety 5. Avoid body contact with grounded sur- shoes, hard hat, or hearing protec
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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 replacement parts. Follow instructions in SERVICE the Maintenance section of this manual. 23. Tool service must be performed only by Use of unauthorized parts or failure to follow qualified repair personnel. Service or main- Maintenance instructions may create a risk of elec
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5. Under normal operation, the tool is 9. Keep hands away from moving parts. designed to produce vibration. The 10. Do not leave the tool running. Operate the screws can come loose easily, causing a tool only when hand-held. breakdown or accident. Check tightness of screws carefully before operation. 11. Do not point the tool at any one in the area when operating. The bit could fly out and 6. In cold weather or when the tool has not injure someone seriously. been used for a long time, let the to
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FUNCTIONAL CAUTION: DESCRIPTION Always be sure that the tool is switched off and unplugged before adjusting or checking function on the tool. 003108 Switch action CAUTION: 1 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 tool, simply pull the switch trigger. Tool speed is increased by increasing pressure on the switch trigger. 1. Switch trigger Release the switch trigger to stop. 003116
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Torque limiter The torque limiter will actuate when a certain torque level is reached. The motor will disengage from the output shaft. When this happens, the bit will stop turning. CAUTION: As soon as the torque limiter actuates, switch off the tool immediately. This will help prevent premature wear of the tool. 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 frequen
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003158 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 1 cover down a couple of times. Then insert the bit again. Turn 2 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. 1. Bit 2. Chuck cover 003163 To remove the bit, pull the chuck cover down all the way and pull the bit out. 1 2 1. Bit 2. Chuck cover 003181 Depth
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Hammer drilling operation OPERATION Set the action mode changing knob to the 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 tool at an idle, then remove the bit partially from the hole. By repeating this sev- eral times
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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 shorten the service life of the tool. There is a tremendous twisting force exerted on the tool/ bit at the time
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ACCESSORIES 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 gre
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Memo 12
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First-Class Postage Required Post Office will not deliver without proper postage. Makita U.S.A., Inc. 14930 Northam Street La Mirada, CA 90638-5753 Fold 13 Cut
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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: Home Center Other ( ) Magazine Radio Hardware/Lumber Store From Dealer Exhibition 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: Construction Trade Design Repair Se
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FACTORY SERVICE CENTERS 1-800-4-MAKITA RETAIN THIS PORTION FOR YOUR RECORDS ARIZONA FLORIDA MISSOURI PENNSYLVANIA 3707 E. Broadway Rd., Ste. 6 750 East Sample Road 9876 Watson Road 1704 Babcock Blvd. Phoenix, AZ 85040 Pompano Beach, FL 33064 St. Louis, MO 63126-2221 Pittsburgh, PA 15209 (602) 437-2850 (954) 781-6333 (314) 909-9889 (412) 822-7370 CALIFORNIA GEORGIA NEBRASKA PUERTO RICO 41850 Christy St. 4680 River Green Parkway NW 4129 S. 84th St. 200 Guayama St. Fremont, CA 94538-5107 Duluth,
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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: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically-treated lumber. Your risk from these exposures varies, depending on how often you do this type of
