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Do not attempt to use this
WARNING
!
to ol to make cut-o uts
a round any fixture or opening which has
live electrical wires, or on any wall which
m ay have live electrical wiring behind it,
as the bit could conduct current to the
tool, creating an electrocution hazard fo r
the operator. Shut off breakers or re m o v e
fuses to disconnect the circuit. Always hold
the tool by its thermoplastic housing, and
always wear eye protection when operating
this device.
• Step 1: Be certain that the box or fixture
which re q u i res a cut-out is firmly mounted
and all wires or other obstructions aro u n d
the opening are pushed back out of the way.
The drywall cut-out bit uses the outer edge
of the box or fixture as a guide, so it is
important that there is nothing in the way
which can prevent it from guiding completely
around the opening. For the purposes of this
instruction manual, the procedure discussed
will be to make a cut-out around a standard
2 1/8" x 3 3/4" electrical box.
• Step 2: Before fastening the drywall sheet,
make a mark close to the center of the
opening in the box on the side of the drywall
facing you. You may then begin to screw or
nail the sheet to the wall, but do not install
fasteners closer then about 15" to the box,
or the sheet will likely bulge and crack before
you cut the opening.
• Step 3: Holding the tool firmly switch the
too l to the "ON" position as described
earlier.
• Step 4: Holding the tool firmly with both
hands, push the bit through the drywall at
the mark you made in step 2. Guide the bit
to the right until you feel it make contact with
the inside edge of the box. Then retract the
bit slightly, (do not pull entirely out) to allow it
to penetrate through the drywall and contact
the outside edge of the box by continuing to
move the tool slightly to the right as you cut.
• Step 5: Keeping the bit in contact with the
outside of the box, move the tool counter-
clockwise to create the opening. When
rounding a corn e r, keep applyi ng li ght
pressure towards the center of the box while
moving the bit steadily and smoothly around
the whole box until the entire cut has been
completed. Slide the switch to the "OFF"
position, and pull the bit free of the drywall.
You may then remove the piece you have
cut, and you will have a smooth opening.
The rest of the screws or nails may now be
put in place on the drywall sheet, and the
task is completed.
The motor may stall if
CAUTION
!
i m p roperly used or over-
loaded. Reduce the pre s s u re or feed rate to
p revent possible damage to the tool. Do not
attempt to start the tool when the bit is
engaged in the workpiece. Always be sure the
collet nut is tightened securely before use.
Page 8
MAKING CUT-OUTS IN MATERIALS
OTHER THAN DRYWALL
Your tool is capable of cutting many types of
building materials in addition to drywall.
T h e re are several diff e rent bits available for
use on these materials. Most materials can
be cut with the "multipurpose" bit, however
the "carbide" burr bits must be used for
h a rd, abrasive materials such as ceramic
wall tile (will not work on ceramic floor grade
tile), cement board, plaster etc.
To make cut-outs, insert and adjust the
proper bit according to previous instructions.
Hold the tool firmly and turn it on. Place the
depth guide at about a 45º angle against the
work surface and tilt the tool to an upright
position with the bit entering the scrap
portion of the area being cut. Move the bit to
the line you wish to follow and cut in a
clockwise direction. Cutting at a slow even
rate will make following a line easier and will
put less stress on the bit.
N OT E : When cutting on a vertical surface,
avoid ending your cut at the bottom of the
hole. If possible, start and end your cut at
the top so the scrap part will not drop onto
the rotating bit. Turn the tool off and remove
it from the cut out hole.
Maintenance Information
C L E A N I N G
To avoid accidents alw ays disconnect the
tool from the power supply before cl e a n i n g
or performing any maintenance. The tool
may be cleaned most effectively with
c o m p ressed dry air. A lw ays wear safety gog-
gles when cleaning tools with compressed
a i r. Ventilation openings and switch levers
must be kept clean and free of foreign matter.
Do not attempt to clean by inserting pointed
objects through openings.
C e rtain cleaning agents and
CAUTION
!
solvents damage plastic
p a rt s . Some of these are: gasoline, carbon
tetrachloride, chlorinated cleaning solvents,
ammonia and household detergents that
contain ammonia.
SERVICE
P r eventive maintenance performed by
u n a u t h o r i zed personnel may result in
misplacing
of
internal
wires
components which could cause serious
h a z a rd. We recommend that all tool service be
performed by a Dremel Service Facility.
FIG. 11
BRUSH & SPRING
CURVED END OF BRU S H
ASSEMBLY
MUST MATCH CURVAT U R E
OF HOUSING
B RUSH CA P
CARBON BRU S H E S
The brushes and commutator in your tool have
been engineered for many hours of dependable
service. To maintain peak efficiency of the
m o t o r, we recommend every two to six months
the brushes be examined. Only genuine Dre m e l
replacement brushes specially designed for
your tool should be used.
MAINTENANCE OF REPLAC E A B L E
B RUSHES Model 9000
The brushes should be inspected fre q u e n t l y
when tools are used continuously. If your tool
runs sporadically, loses power, makes unusual
noises or runs at a reduced speed, check the
brushes. To continue using the tool in this
condition will permanently damage your tool.
With the cord unplugged, remove the brush
caps one at a time with a small screwdriver by
rotating cap counter-clockwise and check each
b r u s h .
If the brush is less than 1/4" long and the end
surface of the brush that contacts the
commutator is rough and/or pitted, they should
be replaced. Check both brushes. Usually the
brushes will not wear out simultaneously. If one
brush is worn out, replace both brushes. Make
s u re the brushes are installed as illustrated. The
curved surface of the brush must match the
c u r v a t u re of the commutator.
After replacing brushes the tool should be run
at no-load; place it on a clean surface and run it
f reely for 5 minutes before loading (or using) the
tool. This will allow the brushes to "seat"
p roperly and will give you more hours of life
f rom each set of brushes. This will also extend
the total life of your tool since the commutator
surface will "wear" longer.
B e a r i n g s - Model 9000 is equipped with ball
bearing construction. Under normal use no
additional lubrication is re q u i re d .
Page 9
and
C U R VATURE
OF HOUSING
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