Operation - Makita DCO140 Instruction Manual

NOTE: Depending on the conditions of use and the
ambient temperature, the indication may differ slightly
from the actual capacity.
NOTE: The first (far left) indicator lamp will blink when
the battery protection system works.
Tool / battery protection system
The tool is equipped with a tool/battery protection sys-
tem. This system automatically cuts off the power to
extend tool and battery life. The tool will automatically
stop during operation if the tool or battery is placed
under one of the following conditions:
Overload protection
This protection works when the tool is operated in a
manner that causes it to draw an abnormally high cur-
rent. In this situation, turn the tool off and stop the appli-
cation that caused the tool to become overloaded. Then
turn the tool on to restart.
Overheat protection
This protection works when the tool or battery is over-
heated. In this situation, let the tool and battery cool
before turning the tool on again.
Overdischarge protection
This protection works when the remaining battery
capacity gets low. In this situation, remove the battery
from the tool and charge the battery.
Adjusting depth of cut
► Fig.3: 1. Thumb screw 2. Shoe
To adjust the shoe, loosen the thumb screw. Slide the
shoe to the desired position and then tighten the thumb
screw securely. Check for the proper clearance beneath
the workpiece before cutting not to strike a hard surface
such as the floor, workbench, etc.
Switch action
CAUTION:
• Before installing the battery cartridge into the
tool, always check to see that the slide switch
actuates properly and returns to the "OFF"
position when the rear of the slide switch is
depressed.
► Fig.4: 1. Slide switch
To start the tool, slide the slide switch toward the "I
(ON)" position. For continuous operation, press the
front of the slide switch to lock it.
To stop the tool, press the rear of the slide switch, then
slide it toward the "O (OFF)" position.
Accidental re-start preventive
function
Even if the battery cartridge is installed on the tool with the
slide switch in the "I (ON)" position, the tool does not start.
To start the tool, first slide the slide switch toward the
"O (OFF)" position and then slide it toward the "I (ON)"
position.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
the battery cartridge is removed before adjust-
ing or checking function on the tool.
Installing or removing bit
CAUTION:
• Do not tighten the collet nut without installing a
bit, or the collet cone may break.
► Fig.5: 1. Collet nut 2. Shoe 3. Shaft lock 4. Tighten
5. Loosen
Press the shaft lock to prevent shaft rotation when
installing or removing the bit.
To install the bit, place it in the collet cone as far as it
goes and then tighten the collet nut securely with the
shoe as a wrench.
To remove the bit, follow the installation procedure in reverse.
Changing the collet cone (country
specific)
CAUTION:
• Use the correct size collet cone for the bit which
you intended to use.
• Do not tighten the collet nut without installing a
bit, or the collet cone may break.
► Fig.6: 1. Collet cone 2. Bit 3. Collet nut
To change the collet cone, loosen the collet nut and
remove. Remove the installed collet cone and replace
with desired collet cone. Reinstall collet nut.

OPERATION

CAUTION:
• Avoid forcing the bit to bend or twist. It may
snap.
• Before turning the tool on, make sure the bit and
collet nut are securely tightened.
Hold the tool securely with the bit pointing in a safe
direction not contacting any surface. Turn the tool on
and wait until the tool reaches full speed.
► Fig.7
When using the drywall guide bit into a drywall, carefully insert
the bit straight until the shoe base contacts the material fully.
Move the tool slowly with a constant pressure in a
clockwise direction to make the cut.
► Fig.8
When cutting straight line, clamp a straight board firmly
to the material and use it as a guide. Move the tool in
the direction of the arrow with the shoe base flush with
the side of the guide board.
When the cut is complete, turn the tool off and wait for
the bit to stop rotating and then carefully remove it from
the material.
8 ENGLISH