7 ENGLISH
OPERATION
Holding tool
CAUTION:
Always use the side grip (auxiliary
handle) and firmly hold the tool by both side grip
and switch handle during operations.
►
Fig.12
Hammer drilling operation
CAUTION:
There is tremendous and sudden
twisting force exerted on the tool/drill 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 opera-
tions.
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., slide the
action mode changing lever to the position of
symbol
to use "rotation with hammering" action.
Be sure to use a tungsten-carbide tipped drill bit.
Position the drill 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 drill 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
►
Fig.13:
1.
Blow-out bulb
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
Drilling operation
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 drill
bit, decrease the tool performance and shorten the
service life of the tool.
CAUTION:
Hold the tool firmly and exert care
when the drill bit begins to break through the
workpiece.
There is a tremendous force exerted on
the tool/drill bit at the time of hole break through.
CAUTION:
A stuck drill 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.
CAUTION:
Always secure workpieces in a
vise or similar hold-down device.
When drilling in wood, metal or plastic materials,
slide 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 drill bit into
the workpiece.
Drilling in metal
To prevent the drill 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
drill 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.
MAINTENANCE
CAUTION:
Always be sure that the tool is
switched off and unplugged before attempting to
perform inspection or maintenance.
NOTICE:
Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
Indicator lamp
►
Fig.14:
1.
Power-ON indicator lamp (green)
2.
Service indicator lamp (red)
The green power-ON indicator lamp lights up when the
tool is switched ON. If the indicator lamp is lit but the
tool does not start, the carbon brushes may be worn
out, or the electric circuit or the motor may be defective.
If the indicator lamp does not light up and the tool does
not start, the ON/OFF switch or the mains cord may be
defective.
The red service indicator lamp lights up when the tool is
excessively loaded. Continued operation under such a
condition will result in a failure or breakage of the tool.
At this time, cool down the tool by running the tool under
no load.
Cleaning vent holes
►
Fig.15:
1.
Vent holes
The tool and its air vents have to be kept clean.
Regularly clean the tool's air vents or whenever the
vents start to become obstructed.
►
Fig.16:
1.
Vent holes
To maintain product SAFETY and RELIABILITY, repairs,
carbon brush inspection and replacement, any other
maintenance or adjustment should be performed by
Makita Authorized or Factory Service Centers, always
using Makita replacement parts.
