Makita HP1620 Manuel D'instructions page 6

Drilling operation
When drilling in wood, metal or plastic materials, move
the action mode changing lever to the position of
bol to use "rotation only" action.
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 force exerted on the tool/bit at
the time of hole break through. 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.
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.
To maintain product SAFETY and RELIABILITY, repairs,
carbon brush inspection and replacement, any other
maintenance or adjustment should be performed by Mak-
ita Authorized Service Centers, always using Makita
replacement parts.
6
OPTIONAL ACCESSORIES
CAUTION:
m
sym-
• 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.
• Tungsten-carbide tipped hammer bit
• Hole saw
• Blow-out bulb
• Safety goggles
• Keyless drill chuck 13
• Chuck key
• Grip assembly
• Depth gauge
• 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.
Noise
The typical A-weighted noise level determined according
to EN60745:
Sound pressure level (
Sound power level (
Uncertainty (K): 3 dB (A)
Vibration
The vibration total value (tri-axial vector sum) determined
according to EN60745:
Work mode: impact drilling into concrete
Vibration emission (
Uncertainty (K): 2.0 m/s
Work mode: drilling into metal
Vibration emission (
Uncertainty (K): 1.5 m/s
• The declared vibration emission value has been mea-
sured in accordance with the standard test method and
may be used for comparing one tool with another.
• The declared vibration emission value 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 emission value
depending on the ways in which the tool is used.
• Be sure to identify safety measures to protect the
operator that are based on an estimation of exposure 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).
): 95 dB (A)
L
pA
): 106 dB (A)
L
WA
Wear ear protection
): 22.0 m/s
a
h, ID
2
): 3.0 m/s
a
h, D
2
ENG905-1
ENG900-1
2
2
ENG901-1