Makita DHR242 Bedienungsanleitung Seite 9

Place the quick change drill chuck on the spindle of
the tool.
Grasp the change cover of the quick change drill chuck
and turn the change cover line to the
click can clearly be heard.
Selecting the action mode
Rotation with hammering
► Fig.7: 1. Rotation with hammering 2. Lock button
3. Action mode changing knob
For drilling in concrete, masonry, etc., depress the lock
button and rotate the action mode changing knob to
the symbol. Use a tungsten-carbide tipped bit.
Rotation only
► Fig.8: 1. Rotation only
For drilling in wood, metal or plastic materials, depress
the lock button and rotate the action mode changing
knob to the symbol. Use a twist drill bit or wood bit.
Hammering only
► Fig.9: 1. Hammering only
For chipping, scaling or demolition operations, depress
the lock button and rotate the action mode changing
knob to the symbol. Use a bull point, cold chisel,
scaling chisel, etc.
Notice on the action mode changing
knob operation
To avoid the damage to the mechanism of the action
mode changing knob, follow the procedures below:
• Do not rotate the action mode changing knob
when the tool is running.
• Make sure that the action mode changing knob is
always positively located in one of the three action
mode positions ( ,
► Fig.10
• Do not turn the knob forcibly. Forcing the knob
may cause tool damage.
When turning the action mode changing knob from
the symbol to the
knob may no longer move in the
tion. In this case, move the knob to the
position and run the tool few seconds. After that,
move the knob to the desired position.
► Fig.11
Torque limiter
The torque limiter will actuate when a certain torque
level is reached. The motor will disengage from the out-
put 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 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 frequently.
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9 ENGLISH
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
the battery cartridge is removed before carrying
out any work on the tool.
Side grip (auxiliary handle)
► Fig.12: 1. Protrusion 2. Groove 3. Loosen
4. Tighten 5. Side grip
CAUTION:
• Always use the side grip to ensure operating
safety.
Install the side grip so that the protrusion on the grip fit
in between the grooves in the tool barrel. Then tighten
the grip by turning clockwise at the desired position. It
may be swung 360° so as to be secured at any position.
Bit grease
Coat the bit shank head beforehand with a small
amount of bit grease (about 0.5 -1 g). This chuck lubri-
cation assures smooth action and longer service life.
Installing or removing the bit
Clean the bit shank and apply bit grease before install-
ing the bit.
► Fig.13: 1. Bit shank 2. Bit grease
Insert the bit into the tool. Turn the bit and push it in until
it engages.
► Fig.14: 1. Bit 2. Chuck cover
If the bit cannot be pushed in, remove the bit. Pull the
chuck cover down a couple of times. Then insert the bit
again. Turn 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.
To remove the bit, pull the chuck cover down all the way
and pull the bit out.
► Fig.15: 1. Bit 2. Chuck cover
Bit angle (when chipping, scaling or
demolishing)
► Fig.16: 1. Action mode changing knob 2. O symbol
The bit can be secured at the desired angle. To change
the bit angle, depress the lock button and rotate the
action mode changing knob to the O symbol. Turn the
bit to the desired angle.
Depress the lock button and rotate the action mode
changing knob to the symbol. Then make sure that
the bit is securely held in place by turning it slightly.
► Fig.17
Depth gauge
► Fig.18: 1. Hole 2. Depth gauge 3. Loosen 4. Tighten
The depth gauge is convenient for drilling holes of
uniform depth. Loosen the side grip and insert the depth
gauge into the hole in the side grip. Adjust the depth
gauge to the desired depth and tighten the side grip.