Makita DA4031, Instruction Manual

Page: 6 / 52

6
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.
Replacing carbon brushes (Fig. 11 & 12)
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.
OPTIONAL ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita service center.
• Drill bits
• Chuck key
• Hex wrench
• Plastic carrying case
NOTE:
• Some items in the list may be included in the tool pack-
age as standard accessories. They may differ from
country to country.
ENG102-2
Noise
The typical A-weighted noise level determined according
to EN62841-2-1:
Sound pressure level (L
pA
): 87 dB (A)
Sound power level (L
WA
): 98 dB (A)
Uncertainty (K): 3 dB (A)
ENG907-1
NOTE:
• The declared noise emission value(s) has been mea-
sured in accordance with a standard test method and
may be used for comparing one tool with another.
• The declared noise emission value(s) may also be
used in a preliminary assessment of exposure.
WARNING:
• Wear ear protection.
• The noise emission during actual use of the power
tool can differ from the declared value(s) depend-
ing on the ways in which the tool is used especially
what kind of workpiece is processed.
• Be sure to identify safety measures to protect the
operator that are based on an estimation of expo-
sure in the actual conditions of use (taking account
of all parts of the operating cycle such as the times
when the tool is switched off and when it is running
idle in addition to the trigger time).
ENG202-3
Vibration
The vibration total value (tri-axial vector sum) determined
according to EN62841-2-1:
Work mode: driling into metal
Vibration emission (
a
h, D
): 2.5 m/s
2 or less
Uncertainty (K): 1.5 m/s
2
ENG901-2
NOTE:
• The declared vibration total value(s) has been mea-
sured in accordance with a standard test method and
may be used for comparing one tool with another.
• The declared vibration total value(s) may also be used
in a preliminary assessment of exposure.
WARNING:
• The vibration emission during actual use of the
power tool can differ from the declared value(s)
depending on the ways in which the tool is used
especially what kind of workpiece is processed.
• Be sure to identify safety measures to protect the
operator that are based on an estimation of expo-
sure in the actual conditions of use (taking account
of all parts of the operating cycle such as the times
when the tool is switched off and when it is running
idle in addition to the trigger time).
EC DECLARATION OF CONFORMITY
For European countries only
The EC declaration of conformity is included as Annex A
to this instruction manual.