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ciency of the motor, we recommend every two
to six month the brushes be examined. Only
genuine Bosch replacement brushes specially
designed for your tool should be used.
Bearings
After about 300-400 hours of operation, or at
every second brush change, the bearings should
be replaced at a Bosch Factory Service Center.
Bearings which become noisy (due to heavy
load or very abrasive material cutting) should
be replaced at once to avoid overheating and
motor failure.
Cleaning
WARNING! 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 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
attempt to clean by inserting pointed objects
through openings.
CAUTION! Certain cleaning agents and
solvents damage plastic parts. Some of these
are: gasoline, carbon tetrachloride, chlorinated
cleaning solvents, ammonia and household de-
tergents that contain ammonia.
Maintenance and Service
WARNING! Preventive maintenance per-
formed by unauthorized personnel may result
in misplacing of internal wires and components
which could cause serious hazard. We recom-
mend that all tool service be performed at
Bosch Factory Service Center.
Tool Lubrication
Your Bosch tool has been properly lubricated
and is ready for use. We recommend, that the
tools with gears be regreased with a special
gear lubricant at every time the brushes are
changed.
Carbon Brushes
The brushes and commutator in your Bosch
tool have been engineered for many hours of
dependable service. To maintain peak effi-
3. With the guard cover 8 open, install grind-
ing wheel with against inner flange 11, then
install outer flange 12 and secure with nut 13.
Close guard cover and secure with wing nuts 7.
Removing Accessories
Repeat steps 1, and 2 of above and remove
accessory.
BM 3609929341 12/03 12/16/03, 11:40 AM8