Makita DP4020 Manuel D'instructions page 5

To remove the drill bit, turn the drill chuck key counter-
clockwise in just one hole, then loosen the chuck by
hand.
After using the chuck key, be sure to return it to the
original position.
► Fig.3: 1. Drill chuck 2. Chuck key
For model DP4021
Hold the ring and turn the sleeve counterclockwise to
open the chuck jaws. Place the drill bit in the drill chuck
as far as it will go. Hold the ring firmly and turn the
sleeve clockwise to tighten the chuck.
To remove the drill bit, hold the ring and turn the sleeve
counterclockwise.
► Fig.4: 1. Sleeve 2. Ring
Installing or removing side grip
(auxiliary handle)
Optional accessory
CAUTION:
Always be sure that the tool is
switched off and unplugged before installing or
removing the side grip.
CAUTION:
Make sure that the side grip is
securely tightened before operation.
The side grip ensures safe operation. Loosen the grip to
open the grip base and fit into the tool. Then tighten the
grip at the desired position. It may be swung 360° so as
to be secured at any position.
To remove the side grip, follow the installation proce-
dure in reverse.
► Fig.5: 1. Grip base 2. Side grip 3. Loosen 4. Tighten
OPERATION
CAUTION:
Switch off the tool immediately if
the tool malfunctions, foreign matter enter the
tool, or abnormal noises are heard. Contact Makita
service center or your local dealer to have the tool
serviced or repaired.
Holding the tool
Hold the tool firmly with one hand on the grip.
In the case of the twisting action, hold the grip firmly
with both hands.
► Fig.6: 1. Vent 2. Grip
NOTICE:
Do not cover vents, or it may cause over-
heating and damage to the tool.
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.
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.
Storage
CAUTION:
Use the hanging hole for their
intended purposes only. Using for unintended pur-
pose may cause accident or personal injury.
The hook hole in the tool bottom is convenient for hang-
ing the tool from a nail or screw on the wall.
Store the tool out of the reach of children. Store the tool
in a place not exposed to moisture or rain.
► Fig.7: 1. Hole
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.
To maintain product SAFETY and RELIABILITY,
repairs, any other maintenance or adjustment should
be performed by Makita Authorized or Factory Service
Centers, always using Makita replacement parts.
5 ENGLISH