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Summary of Contents for HR1821

Page 1: ...3 4 MODEL HR1821 Variable Speed Capacities Wood Steel Concrete 1 5 10 19 518 3 8 314 INSTRUCTION MANUAL No load Blows Overall Net speed per minute length weight 0 A i O O 0 3 500 321 mm 3 1 kg 12 518 6 8 Ibs ...

Page 2: ...job of a heavy duty tool Don t use tool for purpose not intended DRESS PROPERLY Don t wear loose clothing or jewelry They can be caught in moving parts Rubber gloves and non skid footwear are recommended when working outdoors Wear protective hair covering to contain long hair USE SAFETY GLASSES Also use face or dust mask if cutting operation is dusty DON T ABUSE CORD Never carry tool by cord or ya...

Page 3: ... or replaced by an authorized service center unless otherwise indicated elsewhereinthis instruction manu al Have defective switches replaced by authorized service center Don t use tool if switch does not turn it on and off GUARD AGAINST ELECTRIC SHOCK Prevent body contact with grounded surfaces For example pipes radiators ranges refrigerator enclosures PROPER GROUNDING This tool should be grounded...

Page 4: ... and yellow conductor in the cord is the grounding wire Never connect the green or green and yellow wire to a live terminal Your unit is for use on 115volts and has a plug that looks like Fig A An adapter Fig B and C is available for connecting Fig A type plugs to two prong recap tacles The green colored rigid ear lug etc extending from the adapter must be connected to a permanent ground such as a...

Page 5: ...lways 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 Always use the side grip Keep hands away from rotating 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 drill bit could fly out and injure someone seriously When drilling into...

Page 6: ... on the drill bit shank with the red dot and insert the drill bit Now turn the chuck cover 90 degrees I I Fig 1 To remove the drill bit turn the chuck cover until protrusion A is aligned with the red dot Then slip out the drill bit Key groove I I I Fig 2 Side grip 0The side grip can be swivelled a full 360 degrees To set it at any desired angle unscrew the grip counterclockwise and swivel to the d...

Page 7: ...ing pressure Then secure it by turning the metal retainer clockwise CAUTION Empty the dust collector of its contents after drilling every 2 or 3 holes overhead operations Install the drill bit Dust collector Fig How to work switchover mechanism 0 For Rotation Hammering Pressthe push rod indCDodirection For Rotation only Press the Dush rod in direction Push rod L b CAUTION Press the push rod as far...

Page 8: ...drill bit at the location for the hole then pull the trigger Do not force the tool Light pressure gives best results Keep the tool in posi tion and prevent it from slipping away from the hole When holes becomeclogged Do not apply more pressure when the hole becomes clogged with chips or par ticles Instead run the tool at idle then remove from the hole By repeating this several times the holewill b...

Page 9: ...rking chor setting tool Put a plug in the tip of an anchor and hammer it into concrete Screw in a bolt for fastening equipment Fig fi Drilling in wood or metal Set the push rod for rotation only Then use the drill chuck and chuck adapter optional equipment installing it as described in Installing and removing the drill bit P 6 CAUTION DOnot perform rotation hammering action with the drill chuck or...

Page 10: ...side the carbon brush is exposed to contact the com mutator it will automatically shut off the motor If carbon brushes wear out too quickly ask Makita Authorized or Factory Service Centers to determine the cause before replacing them Use only Makita carbon brushes Use the screwdriver to remove the brush holder cap as shown in the figure Insulating tip 77 Fig 1 Fig 14 Take out the worn brush insert...

Page 11: ...replace with the fresh supply 309 Fig 16 CAUTION Filling with more than the specified amount of grease approx 30 g 1 02 can cause faulty hammering action or a failure Fill only with the specified amount of grease CAUTION Do not tighten the crank cap too much when installing It is made of resin and is subjectto breakage Never use the bit grease for lubrication of hammer mechanism To maintain produc...

Page 12: ... Taper shank adapter No 1 Part No 798131 4 0 Taper shank adapter A Part No 798176 2 0 Dust collector Part No 122290 6 0 Depth rod Part No 321144 6 0 Drill chuck S10 Part No 763056 1 1 t 0 Chuck adapter Part No 321832 5 0 Chuck key S10 Part No 7634038 0 Blowout bulb Part No 7650096 Hex wrench 5 Part No 7832038 0 Lock nut wrench 28 Part No 782402 9 0 Hammer grease 30 g 1 02 Part No 181490 7 Bit grea...

Page 13: ...2 35 11 318 W 5 16 13 1112 798056 2 NO3 14 3 19 16 40 I 1 518 W 318 15 1518 798058 8 N0 4 17 5l11 16 50 12 W 112 20 13 16 798060 1 0 Anchor setting tool Part No 765012 7 Anchor setting rod Manual setting 765014 3 No 2 5 765015 1 Makita anchor only Anchor settinq rod 1 0 Anchor setting rod for interior applications Set by tool I Anchor setting rod Plug for interior applications Manual setting Ancho...

Page 14: ...19 mm 3 4 m a ROTARY HAMMER Model HR1821 Seo 19 84 US Note The switch and other part configurations may differ from country to country 14 ...

Page 15: ... Felt Ring 20 0 Ring 40 ea tiouslng 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 6 4 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 82 83 85 86 87 88 89 90 91 92 93 1 3 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 2 2 1 4 1 2 2 1 2 3 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Seal Holder Steel Ball 6 4 Impact Bolt 0 Ring 10 0 Ring 10 Drill Holder Key 4 0 Ring 10 0 Ring 10 0 Ring 19 Change Ring Steel Ball 4 fl Le...

Page 16: ...sused or improperly maintained alterationshave been made to the tool IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT INCIDENTAL OR CON SEQUENTIAL DAMAGES FROM THE SALE OR USE OF THE PRODUCT THIS DISCLAIMER APPLIESBOTH 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 PURPOS...

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