Operation - Makita DDA460 Instruction Manual

Mode indicator status
On Off
Speed change
NOTICE:
Use the speed change knob only after
the tool comes to a complete stop. Changing the
tool speed before the tool stops may damage the tool.
NOTICE:
Always set the speed change knob
carefully into the correct position. If you operate
the tool with the speed change knob positioned half-
way between the position 1 and the position 2, the
tool may be damaged.
Two speed ranges can be preselected with the speed
change knob.
To change the speed, depress the lock button and turn
the speed change knob so that the pointer points to the
position 1 for low speed or the position 2 for high speed.
► Fig.8: 1. Lock button 2. Pointer 3. Speed change
knob
Torque limiter
The torque limiter will actuate when a certain torque
level is reached at the low speed setting (position 1).
The motor will disengage from the output shaft. When
this happens, the drill bit will stop turning.
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.
Installing side grip (auxiliary handle)
CAUTION:
Always be sure that the side grip is
installed securely before operation.
Screw the side grip on the tool securely. The side grip
can be installed on either side of the tool, whichever is
convenient.
► Fig.9: 1. Side grip

Operation

mode
Blinking
High speed
mode
High torque
mode
Overload
alert
Front handle
CAUTION:
Do not fix the front handle beyond the
limits of the arrow as illustrated. Be cautious that your
hand is not caught in the grip. Keep the hand away
from the drill chuck. They can lead to serious accidents.
CAUTION:
Always be sure that the hex bolts
(both sides) of the front handle are tightened securely.
The front handle can be installed in any position within
0° - 112.5° as illustrated.
► Fig.10: 1. Front handle
To change the position, loosen the hex bolts (both
sides) with a hex wrench and turn the front handle to the
desired position. Then tighten the hex bolts securely.
► Fig.11: 1. Front handle 2. Hex wrench
Installing or removing drill bit
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.
► Fig.12: 1. Chuck key
After use, return the chuck key to the storage cavity on
the tool as illustrated.
► Fig.13
OPERATION
CAUTION:
Always insert the battery cartridge
all the way until it locks in place. If you can see the
red indicator on the upper side of the button, it is not
locked completely. Insert it fully until the red indicator
cannot be seen. If not, it may accidentally fall out of the
tool, causing injury to you or someone around you.
CAUTION:
When the speed comes down
extremely, reduce the load or stop the tool to
avoid the tool damage.
CAUTION:
Hold the tool firmly when operat-
ing the tool.
Holding tool
CAUTION:
This is a powerful tool. High torque
is developed and it is important that the tool
should be securely held and properly braced.
Grasp the handle with one hand and the front handle
with the other hand.
► Fig.14: 1. Front handle 2. Handle
When drilling a large hole with a self-feed bit, etc., the
side grip (auxiliary handle) should be used as a brace to
maintain safe control of the tool.
When drilling action is forward (clockwise), the tool
should be braced to prevent a counterclockwise reac-
tion if the bit should bind.
► Fig.15: 1. Reaction 2. Forward 3. Side grip
9 ENGLISH