Makita 8271D Manuel D'instruction page 6

This tool employs an action mode changing ring. Select
one of the three modes suitable for your work needs by
using this ring.
For rotation only, turn the ring so that the arrow on the
tool body points toward the
For rotation with hammering, turn the ring so that the
arrow points toward the
For rotation with clutch, turn the ring so that the arrow
points toward the mark on the ring.
CAUTION:
Always set the ring correctly to your desired mode
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mark. If you operate the tool with the ring
positioned halfway between the mode marks, the
tool may be damaged.
Adjusting the fastening torque
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The fastening torque can be adjusted in 16 steps by
turning the adjusting ring so that its graduations are
aligned with the arrow on the tool body. The fastening
torque is minimum when the number 1 is aligned with
the arrow, and maximum when the number 16 is aligned
with the arrow.
Before actual operation, drive a trial screw into your
material or a piece of duplicate material to determine
which torque level is required for a particular application.
ASSEMBLY
CAUTION:
Always be sure that the tool is switched off and the
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battery cartridge is removed before carrying out
any work on the tool.
Installing or removing driver bit or drill bit
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mark on the ring.
mark on the ring.
1. Graduations
2. Adjusting ring
2
3. Pointer
3
1. Sleeve
1
2. Ring
3. Tighten
2
Hold the ring and turn the sleeve counterclockwise to
open the chuck jaws. Place the bit in the chuck as far as
it will go. Hold the ring firmly and turn the sleeve
clockwise to tighten the chuck.
To remove the bit, hold the ring and turn the sleeve
counterclockwise.
OPERATION
Hammer drilling operation
CAUTION:
There is a tremendous and sudden twisting force
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exerted on the tool/bit at the time of hole
break-through, when the hole becomes clogged
with chips and particles,
reinforcing rods embedded in the concrete.
First, turn the action mode changing ring so that the
arrow on the tool body points to the
adjusting ring can be aligned in any torque levels for this
operation.
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
pressure gives best results. Keep the tool in position and
prevent 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.
Blow-out bulb (optional accessory)
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After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
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or when striking
marking. The
1. Blow-out bulb
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