Maintenance - Makita DGA402 Instruction Manual

Operation with abrasive cut-off /
diamond wheel
Optional accessory
WARNING:
Do not "jam" the wheel or apply
excessive pressure. Do not attempt to make an
excessive depth of cut. Overstressing the wheel
increases the loading and susceptibility to twisting
or binding of the wheel in the cut and the possibility
of kickback, wheel breakage and overheating of the
motor may occur.
WARNING:
Do not start the cutting operation
in the workpiece. Let the wheel reach full speed
and carefully enter into the cut moving the tool
forward over the workpiece surface. The wheel
may bind, walk up or kickback if the power tool is
started in the workpiece.
WARNING:
During cutting operations, never
change the angle of the wheel. Placing side pres-
sure on the cut-off wheel (as in grinding) will cause
the wheel to crack and break, causing serious per-
sonal injury.
WARNING:
A diamond wheel shall be oper-
ated perpendicular to the material being cut.
Usage example: operation with abrasive cut-off
wheel
► Fig.31
Usage example: operation with diamond wheel
► Fig.32
Operation with wire cup brush
Optional accessory
CAUTION:
Check operation of brush by run-
ning tool with no load, insuring that no one is in
front of or in line with brush.
NOTICE:
Avoid applying too much pressure
which causes over bending of wires when using
the wire cup brush. It may lead to premature
breakage.
Usage example: operation with wire cup brush
► Fig.33
Operation with wire wheel brush
Optional accessory
CAUTION:
Check operation of wire wheel
brush by running tool with no load, insuring that
no one is in front of or in line with the wire wheel
brush.
NOTICE:
Avoid applying too much pressure
which causes over bending of wires when
using wire wheel brush. It may lead to premature
breakage.
Usage example: operation with wire wheel brush
► Fig.34
Operation with hole cutter
Optional accessory
CAUTION:
Check operation of the hole cutter
by running the tool with no load, insuring that no
one is in front of the hole cutter.
NOTICE:
Do not tilt the tool during operation. It
may lead to premature breakage.
Usage example: operation with hole cutter
► Fig.35

MAINTENANCE

CAUTION:
Always be sure that the tool is
switched off and the battery cartridge is removed
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.
Air vent cleaning
The tool and its air vents have to be kept clean.
Regularly clean the tool's air vents or whenever the
vents start to become obstructed.
► Fig.36: 1. Exhaust vent 2. Inhalation vent
Replacing carbon brushes
► Fig.37: 1. Limit mark
Check the carbon brushes regularly.
Replace them 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.
1. Insert the top end of slotted bit screwdriver into the
notch in the tool and remove the holder cap cover by
lifting it up.
► Fig.38: 1. Holder cap cover 2. Screwdriver
2.
Use a screwdriver to remove the brush holder
caps.
3. Take out the worn carbon brushes, insert the new
ones and secure the brush holder caps.
► Fig.39: 1. Brush holder cap 2. Screwdriver
4. Reinstall the holder cap cover on the tool.
17 ENGLISH