Operation; Drilling In Metal - Makita DDA451 Instruction Manual

Fig.14
Connecting lanyard (tether strap) to
the hook
CAUTION:
Do not use damaged hook and
screws. Before use, always check for damages,
cracks or deformations, and make sure that the
screws are tightened.
CAUTION:
Make sure that the hook is
securely installed with the screws.
CAUTION:
Do not install or remove any
accessory while hanging the tool. The tool may fall
if the screws are not tightened.
CAUTION:
Always use a locking carabiner
(multi-action and screw gate type) and be sure
to attach the lanyard (tether strap) to the double
looped portion of the hook. Improper attachment
may cause tool drop from the hook and result in
personal injury.
The hook is also used for connecting the lanyard (tether
strap). Be sure to connect the lanyard (tether strap) to
the double looped portion of the hook.
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Fig.15
► 1 . Double looped portion of the hook 2. Lanyard
(tether strap) 3. Locking carabiner (multi-action and
screw gate type)
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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.
Hold the tool firmly when operat-
CAUTION:
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.16
► 1 . Front handle 2. Handle
Drilling operation
Drilling in wood
When drilling in wood, the best results are obtained
with wood drills equipped with a guide screw. The guide
screw makes drilling easier by pulling the drill bit into
the workpiece.

Drilling in metal

To prevent the drill bit from slipping when starting a
hole, make an indentation with a center-punch and
hammer at the point to be drilled. Place the point of the
drill bit in the indentation and start drilling.
Use a cutting lubricant when drilling metals. The excep-
tions are iron and brass which should be drilled dry.
10 ENGLISH
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