OPERATION
Hammer drilling operation
CAUTION:
•There is tremendous and sudden twisting force exerted on the tool/bit at the time of hole
When drilling in concrete, granite, etc., move the action
mode changing knob to the position of 
symbol to use “rotation with hammering” action.
Be sure to use a
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 slipping 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 several times, the hole will be cleaned out and normal drilling may be resumed.
NOTE:
•Eccentricity in the bit rotation may occur while operat- ing the tool with no load. The tool automatically centers itself during operation. This does not affect the drilling precision.
After drilling the hole, use the
Drilling in wood or metal (Fig. 12 & 13)
Use the optional drill chuck assembly. When installing it, refer to “Installing or removing drill bit” described on the previous page.
Hold the ring and turn the sleeve counterclockwise to open the chuck jaws. Place the bit in the chuck as far as it will go. Hold the ring firmly and turn the sleeve clock- wise to tighten the chuck.
To remove the bit, hold the ring and turn the sleeve coun- terclockwise. Set the action mode changing knob to “rotation only”.
You can drill up to 13 mm diameter in metal and up to 24 mm diameter in wood.
Never use “rotation with hammering” when the drill chuck assembly is installed on the tool. The drill chuck assem- bly may be damaged.
Also, the drill chuck will come off when reversing the tool.
CAUTION:
•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 perfor- mance and 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
Diamond core drilling
When performing diamond core drilling operations,
always set the change lever to the 
position to use “rotation only” action.
CAUTION:
•If performing diamond core drilling operations using “rotation with hammering” action, the diamond core bit may be damaged.
MAINTENANCE
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, carbon brush inspection and replacement, any other maintenance or adjustment should be performed by Mak- ita Authorized or Factory Service Centers, always using Makita replacement parts.
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
•Core bit
•Diamond core bit
•Drill chuck assembly
•Drill chuck S13
•Chuck adapter
•Chuck key S13
•Bit grease
•Side grip
•Depth gauge
•
•Dust cup
•Dust extractor attachment
•Safety goggles
•Plastic carrying case
•Keyless drill chuck
6
