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_Drvice
Preventive maintenance pe-
rformed by unauthorized
personnel may result in misplacing of
Internal wires and components which could
cause serious hazard, We recommend that all
tool service be performed by a Sears Service
Center.
CARBON BRUSHES
The brushes and commutator in your tool have
been engineered for many hours of dependable
service. To maintain peak efficiency of the
motor, we recommend every 50-60 hours the
brushes be examined. Only genuine Craftsman
replacement brushes specially designed for
your tool should be used.
i MAINTENANCE OF
i REPLACEABLE BRUSHES
Models 610830, 610960 &610950,
The brushes should be inspected frequently
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 counterclockwise and check each
brush.
CURVEDENDOFBRUSH
q_ MUSTMATCHCURVATURE
OFHOUStNG
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CURVATURE
OFHOUSING
BRUSH
SPRING
BRUSH
j%
BRUSH
CAP
If the brush is less than 1/8" 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. Ifone
brush is worn out, replace both brushes. Make
sure the brushes are installed as illustrated. The
curved surface of the brush must match the
curvature of the commutator.
After replacing brushes the tool should be run
at no-load; place on a clean surface and run
freely for 5 minutes before loading (or using) the
tool. This witl allow the brushes to "seat"
properly and will give you more hours of life
from each set of brushes. This will also extend
the total life of your tool since the commutator
surface will "wear" longer.
BEARINGS
Rotary Tool Nos. 610830, 610960 & 610950 have
double ball bearing construction. Under normal
use neither type requires additional lubrication.
Cleaning
To avoid accidents always
disconnect the tool from the
power supply before cleaning or performing
any maintenance. The tool may be cleaned
most effectively with compressed dry air.
Always wear safety goggles when cleaning
tools with compressed air.
Ventilation openings and switch levers must be
kept clean and free of foreign matter. Do not at-
tempt to clean by inserting pointed objects
through openings.
Certain cleaning agents and
solvents damage plastic
parts. Some of these are: gasoline, carbon
tetrachloride, chlorinated cleaning solvents,
ammonia and household detergents that
contain ammonia.
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