Makita DA4000LR Manual De Instrucciones página 6

Rotate the angle housing to the desired position. Tighten
the bolt with the hex wrench firmly. And retighten the
another bolt firmly again.
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.
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The tool may be converted to a conventional straight
drive drill by installing the drill chuck without the angle
attachment.
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Installing or removing drill bit
003071
003072
1. Spindle
2. Two faces
3. Drill chuck
4. Chuck key
003073
1. Drill chuck
2. Spindle
003055
1. Chuck key
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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 performance 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
hidden 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.
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