6
2.
Remove the masonry drill bit from the drill chuck.
3. Set the change lever from "rotation with
hammering" position to "rotation only" position.
4.
Install a diamond core bit into the chuck.
5.
Place the diamond core bit on drilling location so
that the center bit is inserted into the pilot hole.
6. When drilling, always hold the tool squarely
against material.
7.
Do not force the core bit, allow the core bit to do
the work. This will prolong the life of the core bit
and reduce breakage.
8. Ensure that the masonry dust/swarf produced
during drilling is regularly removed.
Allowing the dust/swarf to accumulate will result it
overheating and excessive clutch/torque limiter
wear and the loss of segments from the core bit.
9.
When entering or leaving a hole, ensure that the
core bit is rotating.
10. If the core bit starts to vibrate and when the core
bit begins to break through material, reduce
pressure immediately.
11. After use, store the core bit carefully in its box and
remember that it is a diamond core bit.
NOTE:
•
A pilot hole is not required for 22 mm and 28 mm
diameter core bits.
Hammer drilling operation
(with a tungsten-carbide tipped bit)
CAUTION:
•
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. Always use the
side grip (auxiliary handle) and firmly hold the tool
by both side grip and switch handle during
operations. Failure to do so may result in the loss of
control of the tool and potentially severe injury.
When drilling in concrete, granite, tile, etc., move the
action mode changing lever to the position of
symbol to
use "rotation with hammering" action.
Blow-out bulb (optional accessory)
1
002449
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
Drilling operation
(with a conventional drill bit)
When drilling in wood, metal or plastic materials, move
the action mode changing lever to the position
of symbol 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
exceptions 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 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.
•
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
Makita Authorized Service Centers, always using Makita
replacement parts.
ACCESSORIES
CAUTION:
•
These accessories or attachments are
recommended for use with your Makita tool
specified in this manual. The use of any other
1. Blow-out bulb
