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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
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.
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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. If one 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
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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