Functional Description; Operation - Makita DA4000LR Instruction Manual

FUNCTIONAL DESCRIPTION

CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.
Switch action (Fig. 1)
CAUTION:
• Before plugging in the tool, always check to see that
the switch trigger actuates properly and returns to the
''OFF'' position when released.
To start the tool, simply pull the switch trigger. Tool speed
is increased by increasing pressure on the switch trigger.
Release the switch trigger to stop.
Reversing switch action (Fig. 2)
This tool has a reversing switch to change the rotational
direction. Move the reversing switch lever to the "A" side
for clockwise (forward) rotation or the position "B" side for
counterclockwise (reverse) rotation.
CAUTION:
• Always check the rotational direction before operation.
• Use the reversing switch only after the tool comes to a
complete stop. It will damage the tool to change the
rotational direction before the tool stops.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Installing side grip (auxiliary handle)
CAUTION:
• Always use the side grip and hold it with both hands to
ensure operating safety.
Use of it with angle attachment (Fig. 3)
Screw the side grip for the angle attachment on the angle
housing. Then tighten the side grip by turning clockwise
at the desired position.
Use of it without angle attachment (Fig. 4)
Screw the side grip on the tool barrel securely. The side
grip can be installed on either side of the tool, whichever
is convenient.
Installing or removing angle attachment
The angle head has a spindle on each end. For higher
speed operation, attach the drill chuck to the end marked
"HIGH". The higher speed is better suited for drilling
smaller diameter holes.
For lower speed operation, attach the drill chuck to the
end marked "LOW". The lower speed is best utilized for
drilling larger diameter holes. (Fig. 5)
The tool is factory assembled with the chuck on spindle
end marked "HIGH". To change to the "LOW" speed, pro-
ceed as follows:
To remove the drill chuck, first open the chuck jaws com-
pletely and place the chuck key in one of the key holes.
(Fig. 6)
Remove the chuck remaining bolt through the chuck
opening by turning it counterclockwise with the hex
wrench. (Fig. 7)
CAUTION:
• The drill chuck and the bolt are assembled each other.
Turn the bolt counterclockwise about 10 times so that
they can be removed together.
6
Loosen the bolts of the joint by using the hex wrench and
remove the angle housing, the joint and the socket.
(Fig. 8)
To install the socket and the joint, fit the socket to the
spindle so that the two faces are fitted perfectly. Then
install the joint. For higher speed operation, fit the angle
housing marked "LOW" to the joint. For lower speed
operation, fit the angle housing marked "HIGH" to the
joint. (Fig. 9)
Rotate the angle housing to the desired position. Tighten
the bolt with the hex wrench firmly. And retighten the
another bolt firmly again. (Fig. 10)
CAUTION:
• Be sure to tighten the two bolts firmly, or it may present
a risk of injury to persons.
Slide the drill chuck to the spindle so that the two faces
are fitted perfectly. Holding the drill chuck with the chuck
key, tighten the bolt (for installing the drill chuck) clock-
wise with the hex wrench firmly. (Fig. 11 & 12)
The tool may be converted to a conventional straight
drive drill by installing the drill chuck without the angle
attachment. (Fig. 13)
Installing or removing drill bit (Fig. 14)
To install the bit, place it in the chuck as far as it will go.
Tighten the chuck by hand. Place the chuck key in each
of the three holes and tighten clockwise. Be sure to
tighten all three chuck holes evenly.
To remove the bit, turn the chuck key counterclockwise in
just one hole, then loosen the chuck by hand.
After using the chuck key, be sure to return to the original
position.

OPERATION

Holding tool
CAUTION:
• This is a powerful tool. High torque is developed
and it is important that the tool should be securely
held and properly braced.
Grasp the handle with one hand and the front handle with
the other hand. (Fig. 15)
When drilling a large hole with a self-feed bit, 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 reaction
if the bit should bind. (Fig. 16)
When reversing, brace the tool to prevent a clockwise
reaction. If the drill bit must be removed from a partially
drilled hole, be sure the tool is properly braced before
reversing. (Fig. 17)
Drilling operation
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 excep-
tions are iron and brass which should be drilled dry.