Makita DDA450 Instruction Manual page 8

Installing key holder
(Country specific)
CAUTION:
Always be sure that the key holder
is installed securely before operation.
Screw the key holder on the tool securely. Then place
the chuck key in position.
► 1. Key holder 2. Screw 3. Chuck key
Installing or removing drill bit
For model DDA450
To install the drill bit, place it in the chuck as far as it will
go. Tighten the chuck by hand. Place the chuck key in
each of the three holes and tighten clockwise. Be sure
to tighten all three chuck holes evenly.
To remove the drill bit, turn the chuck key counterclock-
wise in just one hole, then loosen the chuck by hand.
► 1. Chuck key
After use, return the chuck key to the key holder on the
tool as illustrated.
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► 1. Key holder
For model DDA451
3
Use only the drill bit designed with dimensions shown
in the figure.
A=11.2 mm (7/16")
To install the drill bit, pull the sleeve in the direction of the
arrow and insert the drill bit into the sleeve as far as it will go.
Then release the sleeve to secure the drill bit.
To remove the drill bit, pull the sleeve in the direction of
the arrow and pull the drill bit out.
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► 1. Drill bit 2. Sleeve
8 ENGLISH
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2
NOTE: If the drill bit is not inserted deep enough into the
sleeve, the sleeve will not return to its original position
and the drill bit will not be secured. In this case, try re-in-
serting the drill bit according to the instructions above.
NOTE: After inserting the drill bit, make sure that it is
firmly secured. If it comes out, do not use it.
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A