Makita HR2430 Instruction Manual page 8

Insert the bit into the tool. Turn the bit and
push it in until it engages.
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.
Bit
Chuck cover
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.
Dust extractor attachment and dust bag
(in concrete drilling operation)
With the dust extractor attachment and the dust bag installed on this tool, you can do your
work very cleanly without dust scattered around in the work site.
CAUTION:
These two accessories can be used only for drilling holes in concrete. Accordingly, do not
use them in metal or wood drilling operation.
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