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2610047983_11253VSR 10/2/17 1:10 PM Page 12
the bit does not just spin in the hole. This will
dull the bit and greatly shorten its life.
DRILLING MASONRY
Use carbide-tipped masonry bit for cinder
block, mortar, common brick, soft stone and
For selection of dust collection systems and
operating instructions, see the Operating /
Safety Instructions for 'Dust Extraction
Preventive maintenance
WARNING
performed by unauth-
orized per so n nel may result in misplacing
of internal wires and components which
could
cause
recommend that all tool service be performed
by a Bosch Factory Service Center or Autho -
rized Bosch Service Station.
TOOL LUBRICATION
Your Bosch tool has been properly lubricated
and is ready to use. It is recommended that
tools with gears be regreased with a special
gear lubricant at every brush change.
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 two to six months
the brush es be examined. Only genuine Bosch
replace ment brushes specially designed for
your tool should be used.
BEARINGS
After about 300-400 hours of operation, or at
Dust Extraction
Maintenance
Service
serious
hazard.
other materials. The amount of pressure to be
used is dependent upon the type of material
being drilled. Soft materials require less
pressure while the hard materials need more
pressure to prevent the drill bit from spinning.
Attachments for Hammers and Hammer Drills'
included with your tool or with the dust
extraction attachment.
every second brush change, the bearings
should be replaced at Bosch Factory Service
Center or Au thorized Bosch Service Station.
Bearings which become noisy (due to heavy
load or very abrasive material cut ting) should
be replaced at once to avoid overheating or
We
motor failure.
WARNING
the power supply before cleaning or
performing any main tenance. The tool may
be cleaned most effectively with compressed
dry air. Always wear safety gog gles 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.
CAUTION
plastic parts. Some of these are: gasoline,
carbon tetrachlo ride, chlo rinated cleaning
solvents,
ammonia
detergents that contain ammonia.
-12-
Cleaning
To avoid accidents always
dis connect the tool from
Certain cleaning agents
and sol vents damage
and
house hold
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