Makita DTP131 Manuel D'instructions page 10

NOTE:
• When the action mode is set to impact driver mode,
make sure that the tool impacts properly by fastening a
wood screw before operation. If the tool does not work
properly, contact your nearest Makita service center.
• Hold the tool pointed straight at the screw.
• Use the proper bit for the head of the screw/bolt that
you wish to use.
• When fastening screw M8 or smaller, carefully adjust
pressure on the switch trigger so that the screw is not
damaged.
• If you tighten the screw for a time longer than shown in
the figures, the screw or the point of the driver bit may
be overstressed, stripped, damaged, etc. Before start-
ing your job, always perform a test operation to deter-
mine the proper fastening time for your screw.
The fastening torque is affected by a wide variety of fac-
tors including the following. After fastening, always check
the torque with a torque wrench.
1. When the battery cartridge is discharged almost
completely, voltage will drop and the fastening
torque will be reduced.
2. Driver bit or socket bit
Failure to use the correct size driver bit or socket bit
will cause a reduction in the fastening torque.
3. Bolt
• Even though the torque coefficient and the class of
bolt are the same, the proper fastening torque will
differ according to the diameter of bolt.
• Even though the diameters of bolts are the same,
the proper fastening torque will differ according to
the torque coefficient, the class of bolt and the bolt
length.
4. The manner of holding the tool or the material of
driving position to be fastened will affect the torque.
5. Operating the tool at low speed will cause a reduc-
tion in the fastening torque.
Hammer drill mode "
CAUTION:
• Always hold the tool firmly during operation. There is a
tremendous and sudden twisting force exerted on the
tool/bit at the time of hole break-through, when the hole
becomes clogged with chips and particles, or when
striking reinforcing rods embedded in the concrete.
Be sure to use a tungsten-carbide tipped bit.
Position the bit at the desired location for the hole, then
pull the switch trigger. Do not force the tool. Light pres-
sure gives best results. Keep the tool in position and pre-
vent it from slipping away from the hole.
Do not apply more pressure when the hole becomes
clogged with chips or particles. Instead, run the tool at an
idle, then remove the bit partially from the hole. By
repeating this several times, the hole will be cleaned out
and normal drilling may be resumed.
"
Drilling mode "
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.
10
"
• 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.
• Do not pull the switch trigger repeatedly when the
motor is locked. It may damage the tool.
For 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.
For 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.
NOTE:
• Choose suitable speed for the work load. Drilling over
the following capacity may damage the tool.
High speed
Low speed
012989
Screwdriver mode " "
CAUTION:
• Adjust the number on the LED display to the proper
torque level for your work.
• Make sure that the driver bit is inserted straight in the
screw head, or the screw and/or bit may be damaged.
• Hold the tool firmly. When the clutch cuts in or refasten-
ing, a sudden twisting force may occur and it can twist
your wrist.
Place the point of the driver bit in the screw head and
apply pressure to the tool. Start the tool slowly and then
increase the speed gradually.
Drilling capacity
Steel 6.5 mm
Wood 12 mm
Steel 10 mm
Wood 21 mm