10 ENGLISH
OPERATION
Hammer drilling operation
►
Fig.17
Set the action mode changing knob to the
symbol.
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.
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 rein-
forcing 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.
NOTE:
Eccentricity in the bit rotation may occur while
operating the tool with no load. The tool automatically
centers itself during operation. This does not affect
the drilling precision.
Blow-out bulb (optional accessory)
►
Fig.18:
1.
Blow-out bulb
After drilling the hole, use the blow-out bulb to clean the
dust out of the hole.
Chipping/Scaling/Demolition
►
Fig.19
Set the action mode changing knob to the
symbol.
Hold the tool firmly with both hands. Turn the tool on
and apply slight pressure on the tool so that the tool will
not bounce around, uncontrolled. Pressing very hard on
the tool will not increase the efficiency.
Drilling in wood or metal
►
Fig.20:
1.
Chuck adapter
2.
Keyless drill chuck
►
Fig.21:
1.
Sleeve
2.
Ring
Use the optional drill chuck assembly. When installing it,
refer to "Installing or removing the bit" described on the
previous page.
Set the action mode changing knob so that the pointer
points to the
symbol.
CAUTION:
•
Never use "rotation with hammering" when the
drill chuck assembly is installed on the tool. The
drill chuck assembly may be damaged. Also, the
drill chuck will come off when reversing the tool.
•
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 twisting force exerted
on the tool/bit at the time of hole breakthrough.
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
the battery cartridge is removed before attempt
-
ing to perform inspection or maintenance.
•
Never use gasoline, benzine, thinner, alcohol
or the like. Discoloration, deformation or cracks
may result.
Replacing carbon brushes
►
Fig.22:
1.
Limit mark
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Remove holder cap covers by inserting the slotted bit
screwdriver into the recessed part in the tool and lifting
it up.
►
Fig.23:
1.
Recesed part
2.
Holder cap cover
Use a screwdriver to remove the brush holder caps.
Take out the worn carbon brushes, insert the new ones
and secure the brush holder caps.
►
Fig.24:
1.
Brush holder cap
2.
Screwdriver
Remount the holder cap covers on the tool.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per
-
formed by Makita Authorized Service Centers, always
using Makita replacement parts.
Summary of Contents for DHR202
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