Makita DA4030 Instruction Manual page 8

Installing or removing drill bit
CAUTION:
Always be sure that the tool is switched off and unplugged before installing or removing
the bit.
To install the 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 bit, turn the chuck key counter-
clockwise in just one hole, then loosen the
chuck by hand.
After using the chuck key, be sure to return
it to the original position.
I
Chuck key
1
8