Makita DA4000LR Manuel D'instructions page 5

Use of it with angle attachment (Fig. 3)
Screw the side grip for the angle attachment on the angle
housing. Then tighten the side grip by turning clockwise
at the desired position.
Use of it without angle attachment (Fig. 4)
Screw the side grip on the tool barrel securely. The side
grip can be installed on either side of the tool, whichever
is convenient.
Installing or removing angle attachment
The angle head has a spindle on each end. For higher
speed operation, attach the drill chuck to the end marked
"HIGH". The higher speed is better suited for drilling
smaller diameter holes.
For lower speed operation, attach the drill chuck to the
end marked "LOW". The lower speed is best utilized for
drilling larger diameter holes. (Fig. 5)
The tool is factory assembled with the chuck on spindle
end marked "HIGH". To change to the "LOW" speed, pro-
ceed as follows:
To remove the drill chuck, first open the chuck jaws com-
pletely and place the chuck key in one of the key holes.
(Fig. 6)
Remove the chuck remaining bolt through the chuck
opening by turning it counterclockwise with the hex
wrench. (Fig. 7)
CAUTION:
• The drill chuck and the bolt are assembled each other.
Turn the bolt counterclockwise about 10 times so that
they can be removed together.
Loosen the bolts of the joint by the hex wrench and
remove the angle housing, the joint and the socket.
(Fig. 8)
To install the socket and the joint, fit the socket to the
spindle so that the two faces are fitted perfectly. Then
install the joint. For higher speed operation, fit the angle
housing marked "LOW" to the joint. For lower speed
operation, fit the angle housing marked "HIGH" to the
joint. (Fig. 9)
Rotate the angle housing to the desired position. Tighten
the bolt with the hex wrench firmly. And retighten the
another bolt firmly again. (Fig. 10)
CAUTION:
• Be sure to tighten the two bolts firmly, or it may present
a risk of injury to persons.
Slide the drill chuck to the spindle so that the two faces
are fitted perfectly. Holding the drill chuck with the chuck
key, tighten the bolt (for installing the drill chuck) clock-
wise with the hex wrench firmly. (Fig. 11 & 12)
The tool may be converted to a conventional straight
drive drill by installing the drill chuck without the angle
attachment. (Fig. 13)
Installing or removing drill bit (Fig. 14)
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 counterclockwise in
just one hole, then loosen the chuck by hand.
After using the chuck key, be sure to return to the original
position.
OPERATION
Holding tool
When drilling a large hole with a hole saw, etc., the side
grip (auxiliary handle) should be used as a brace to
maintain safe control of the tool.
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 bit into the
workpiece.
Drilling in metal
To prevent the 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 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.
CAUTION:
• Pressing excessively on the tool will not speed up the
drilling. In fact, this excessive pressure will only serve
to damage the tip of your bit, decrease the tool perfor-
mance and shorten the service life of the tool.
• There is a tremendous twisting force exerted on the
tool/bit at the time of hole breakthrough. Hold the tool
firmly and exert care when the bit begins to break
through the workpiece.
• A stuck bit can be removed simply by setting the
reversing switch to reverse rotation in order to back out.
However, the tool may back out abruptly if you do not
hold it firmly.
• Always secure small workpieces in a vise or similar
hold-down device.
• Avoid drilling in material that you suspect contains hid-
den nails or other things that may cause the bit to bind
or break.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
Replacing carbon brushes (Fig. 15 & 16)
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized Service Centers, always
using Makita replacement parts.
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