7
CAUTION:
• Never use “rotation with hammering” when the drill
chuck assembly is installed on the tool. The drill chuck
assembly may be damaged.
• 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
hold-down device.
For Model HR2410 only and HR2410X
Also, the drill chuck will come off when reversing the tool.
NOTE:
If you need to assemble the drill chuck and chuck
adapter assembly, proceed as follows. Secure the drill
chuck in a vise or similar securing devise. (Fig. 12)
Remove the screw from the chuck adapter assembly and
screw the chuck adapter into the drill chuck. Use a
wrench to tighten the chuck adapter securely, applying
about 30 – 40 N•m torque. (Note: you can obtain 30 –
40 N•m torque by applying pressure of 300 – 400 N to the
wrench while holding the portion 10 cm from the wrench
head.)
Open the chuck jaws fully and insert the screw through
the chuck opening. Tighten the screw counterclockwise
with a screwdriver. (Fig. 13)
MAINTENANCE
CAUTION:
Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
To maintain product safety and reliability, repairs, mainte-
nance or adjustment should be carried out by a Makita
Authorized Service Center.
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