Maintenance - Makita DA6301 Instruction Manual

Holding tool (Fig. 4 & 5)
CAUTION:
This is a powerful tool. High torque is developed and
it is important that the tool be securely held and
properly braced.
Grasp the switch handle with one hand and the spade
grip with the other hand. When drilling a large hole
with a hole saw, etc., the side grip (auxiliary handle)
should be used as a brace to maintain safe control of
the tool.
When drilling action is forward (clockwise), the tool
should be braced to prevent a counterclockwise reac-
tion if the bit should bind. When reversing, brace the
tool to prevent a clockwise reaction. If the bit must be
removed from a partially drilled hole, be sure the tool
is properly braced before reversing.
Switch action (Fig. 6)
The switch is reversible, providing either clockwise or
counterclockwise rotation. To start the tool, simply pull
the lower part of the switch for clockwise, the upper
part for counterclockwise. Release the switch to stop.
CAUTION:
• Before plugging in the tool, always check to see that
the switch actuates properly and returns to the
''OFF'' position when released.
• Change the direction of rotation only when the tool
comes to a complete stop. Changing it before the
tool stops may damage the tool.
Speed change (Fig. 7)
To change the tool speed, pull the pin and slide the
button to the desired position (High or Low). If the
button does not slide easily, turn the chuck in either
direction while sliding the button.
Drilling operation
• Drilling in wood
When drilling holes in the wood, use a wood drill
with a guide screw. The guide screw makes it bore
naturally by itself, so you do not need to apply any
pressure to the tool.
• Drilling in metal
To prevent the bit from slipping when starting a hole,
make an indentation with a center-punch and ham-
mer 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 grip the small workpiece firmly with a vise or
a holding means.
• A stuck bit can be removed simply by setting the
reversing switch to reverse rotation in order to back
out. However, the tool will pull away easily unless
you hold it firmly before starting the tool.

MAINTENANCE

CAUTION:
Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Replacing carbon brushes (Fig. 8 & 9)
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.
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.
To maintain product safety and reliability, repairs,
maintenance or adjustment should be carried out by a
Makita Authorized Service Center.
GUARANTEE
We guarantee Makita tools in accordance with
statutory/country-specific regulations. Damage attrib-
utable to normal wear and tear, overload or improper
handling will be excluded from the guarantee. In case
of complaint, please send the tool, undismantled, with
the enclosed GUARANTEE CERTIFICATE, to your
dealer or the Makita Service Center.
5