Operation - Makita DCO140 Instruction Manual

NOTE:
The overheat protection works only with a battery
cartridge with a star marking.
Fig.2
Adjusting depth of cut
Fig.3
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,
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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
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 adjusting 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
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
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.
NOTE:
When using this tool, the rotating action causes
•
the tool to pull. The less pressure applied to the
tool causes less pull and provides a more accurate
cut. Excessive pressure or fast cutting can cause
the bit to dull or break premature.
When cutting drywall around outlet boxes, cut in a
•
counterclockwise direction for ease of cut.
The standard bit included with this tool is for
•
cutting drywall only. When cutting materials other
than drywall, do not use the standard drywall
guide bit.
Using multipurpose bit (optional accessory)
Fig.9
When using the multipurpose bit into the material, hold
the tool at approximately a 45 degree angle with the
edge of the shoe base contacting the material.
7