ENGLISH: Original instructions INSTRUCTION MANUAL Cordless Rotary Hammer DHR171 Read before use.
SPECIFICATIONS Model: DHR171 Drilling capacities Concrete 17 mm Steel 10 mm Wood 13 mm 0 - 680 min-1 No load speed 0 - 4,800 min-1 Blows per minute Overall length 273 mm Rated voltage D.C. 18 V Standard battery cartridge BL1815N / BL1820 / BL1820B / BL1830 / BL1830B / BL1840 / BL1840B / BL1850 / BL1850B / BL1860B Net weight • • • 2.1 - 2.8 kg Due to our continuing program of research and development, the specifications herein are subject to change without notice.
Work area safety 1. Keep work area clean and well lit. Cluttered or dark areas invite accidents. 2. 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 children and bystanders away while operating a power tool. Distractions can cause you to lose control. 6. 7. 8. Electrical Safety 1. Power tool plugs must match the outlet. Never modify the plug in any way.
6. 7. 8. 9. Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control. Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation. Keep handles and grasping surfaces dry, clean and free from oil and grease.
4. 5. 6. 7. 8. 9. 10. 11. If electrolyte gets into your eyes, rinse them out with clear water and seek medical attention right away. It may result in loss of your eyesight. Do not short the battery cartridge: (1) Do not touch the terminals with any conductive material. (2) Avoid storing battery cartridge in a container with other metal objects such as nails, coins, etc. (3) Do not expose battery cartridge to water or rain.
Overheat protection Indicating the remaining battery capacity When the tool or battery is overheated, the tool stops automatically and the lamp blinks. In this case, let the tool and battery cool before turning the tool on again. Only for battery cartridges with the indicator Overdischarge protection When the battery capacity is not enough, the tool stops automatically. In this case, remove the battery from the tool and charge the battery.
Rotation only Reversing switch action For drilling in wood, metal or plastic materials, rotate the action mode changing knob to the symbol. Use a twist drill bit or wood drill bit. A B 1 1 ► 1. Reversing switch lever CAUTION: Always check the direction of rotation before operation. ► 1. Action mode changing knob CAUTION: 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.
Installing or removing drill bit Depth gauge Clean the shank end of the drill bit and apply grease before installing the drill bit. The depth gauge is convenient for drilling holes of uniform depth. Loosen the side grip and insert the depth gauge into the hole on the side grip. Adjust the depth gauge to the desired depth and tighten the side grip firmly. 2 1 2 1 ► 1. Shank end 2. Grease Insert the drill bit into the tool. Turn the drill bit and push it in until it engages.
NOTE: The standard side grip cannot be used with the dust cup set being installed on the tool. When the dust cup set is installed on the tool, remove the grip from the standard side grip, and then attach it to the optional grip base set. Before installing the dust cup set, remove the bit from the tool if installed. Install the spacer so that the grooves on the spacer fit in the protrusions on the tool barrel while widening it. Be careful for the spring not to come off from the slit of spacer.
To remove the dust cup set, hold the root of dust cup and pull it out. 1 2 3 1 1 2 3 ► 1. Dust cup ► 1. Groove 2. Hook 3. Screw NOTE: If the cap comes off from the dust cup, attach it with its printed side facing up so that groove on the cap fits in the inside periphery of the attachment. The hook is convenient for temporarily hanging the tool. This can be installed on either side of the tool.
Hammer drilling operation 1 CAUTION: There is tremendous and sudden twisting force exerted on the tool/drill 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.
If you need any assistance for more details regarding these accessories, ask your local Makita Service Center. • Carbide-tipped drill bits (SDS-Plus carbide-tipped bits) • Chuck adapter • Keyless drill chuck • Bit grease • Depth gauge • Blow-out bulb • Dust cup • • • • • • Dust cup set Grip base set Safety goggles Hook Makita genuine battery and charger Plastic carrying case NOTE: Some items in the list may be included in the tool package as standard accessories. They may differ from country to country.
