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Makita HR1821 manual

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Table of contents for the manual

  • Page 1

    19 mm (3/4") MODEL HR1821 Variable Speed Capacities Wood Steel Concrete 15" 10" 19" (518") (3/8") (314" INSTRUCTION MANUAL No load Blows Overall Net speed per minute length weight 0 ;/A,i:OO 0 - 3,500 321 mm 3.1 kg (12-518") (6.8 Ibs)[...]

  • Page 2

    IMPORTANT SAFETY INSTRUCTIONS (For All Tools) WARNING: WHEN USING ELECTRIC TOOLS, BASIC SAFE- REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, AND PER- TY PRECAUTIONS SHOULD ALWAYS BE FOLLOWED TO SONAL INJURY, INCLUDING THE FOLLOWING: READ ALL INSTRUCTIONS. 1. 2. 3. 4. 5. 6. 7. 8. 9. IO. 11. 12. 13. KEEP WORK AREA CLEAN. Cluttered areas and benches invite [...]

  • Page 3

    14. 15. 16. 17. 18. 19. 20. 21. REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to see that keys and adjusting wrenches are removed from tool before turn- ing it on. AVOID UNINTENTIONAL STARTING. Don't carry plugged-in tool with finger on switch. Be sure switch is OFF when plugging in. OUTDOOR USE EXTENSION CORDS. When tool is used [...]

  • Page 4

    For all grounded tools with American type plug. GROUNDING INSTRUCTIONS: This tool should begrounded while in use to protect the operator from electric shock. The tool is equipped with a three-conductor cord and three-prong grounding- type plug to fit the proper grounding-type receptacle. The green (or green and yellow) conductor in the cord is the [...]

  • Page 5

    ADDITIONAL SAFETY RULES 1. 2. 3. 4. 5. 6. 7. 8. 9. IO. 11. Wear a hard hat (safety helmet) and an ear protector if necessary. Be sure the drill 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 tightness of screws care[...]

  • Page 6

    HOW TO USE Bit grease 0 Coat the drill bit shank head beforehand with a small amount (about 0.5 - 1 g; 0.02 - 0.04 02.) of bit grease. This chuck lubrication assures smooth action and longer service life. Installing and removing the drill bit To install the drill bit, align protrusion (A) with the red dot, then align the key groove on the drill bit[...]

  • Page 7

    Depth rod .The depth rod is used to drill holes of uniform depth. Loosen the thumb screw set the depth rod to desired position, then tighten the thumb screw. Fig. 4 Handling dust collector 0 Use the dust collector for safe, sanitary then fix the dust collector on the end by turning and applying pressure. Then secure it by turning the metal retainer[...]

  • Page 8

    Switch action Tool speed is increased by increasing pres- sure on the trigger. To start the tool, simply pull the trigger. Release the trigger to stop. Speed control screw , Fig. t .A speed control screw is provided so that tool speed (RPM) can be changed at the fully- pulled trigger position. Turn the speed control screw clockwise (+) for higher s[...]

  • Page 9

    Blow-out bulb 0 Use the blow-out bulb to clean out the hole. Fig. 10 Anchor setting procedure 0 The drill bit has a red marking which can be used to indicate the anchor length. Use the depth rod when drilling for setting a number of anchors at the same depth. ed marking chor setting tool Put a plug in the tip of an anchor and hammer it into concret[...]

  • Page 10

    MAINTENANCE CAUTION: Always be sure that the tool is switched off and unplugged before attempting to perform inspection and maintenance. Replacing carbon brushes 0 Both carbon brushes should be replaced after about 150 hours of use. When the resin insulating tip inside the carbon brush is exposed to contact the com- mutator, it will automatically s[...]

  • Page 11

    Lubrication 0 Lubricate the tool every time after replacing carbon brushes. Run the tool for several minutes to warm it up, then rest the tool on the table with the chuck cover (bit) end pointing toward the ceiling. This will allow the old grease to collect inside the crank housing. After five minutes, take off the crank cap and remove the old grea[...]

  • Page 12

    ACC ESSO R I ES 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. The accessories or attachments should be used only in the proper and intended manner. 0 Taper shank adapter No. 1 Part No. 798131[...]

  • Page 13

    0 Tungsten-carbide tip bits Part No Blt Max drilling Overall diameter depth lenath 0 Anchors (30 sets per pkg) Anchor outer Overall Thread N~ 1 dyzer I leegmf: 1 Thread 1 k3;g_f; I Part NO. No.2 11 17/16") 30 (1 3/16") W 114'' 10 1318") 798054-6 NO 2 5 12 Ill2") 35 11-318") W 5/16" 13 1112") 798056-2 NO [...]

  • Page 14

    19 mm (3/4") @ma ROTARY HAMMER - Model HR1821 Seo.--19-'84 US Note: The switch and other part configurations may differ from country to country. 14[...]

  • Page 15

    MODEL HR1821 'ikM ,,!!D DESCRIPTION Sep-19-'84 US ,!:, DESCRIPTION MACHINE ~ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 3 1 1 1 1 1 1 1 1 1 1 1 1 4 4 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Steel Ball 6 4 Key 4 Cylinder Liner 20 Ball Bea[...]

  • Page 16

    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 the period of ONE YEAR from the date of original purchase. Should any trouble develop during this one-year period, return the COMPLETE tool, freigh[...]