Extension Cords; Carbon Brushes; Cleaning - Craftsman 170.172440 Owner's Manual

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 brushes be examined.
Only genuine Sears Craftsman 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 an Authorized Sears
Service Center. Bearings which become
noisy (due to heavy load or very abrasive
material cutting) should be replaced at once
to avoid overheating or motor failure.
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 attempt to clean by inserting pointed
objects through openings.
_ ertain cleaning agents
and solvents damage
plastic parts. Some of these are: gasoline,
carbon tetrachloride, chlorinated cleaning
solvents, ammonia and household
detergents that contain ammonia.
_lf an extension cord is necessary, a cord with adequate size conductors
that is capable of carrying the current necessary for your tool must be
used. This will prevent excessive voltage drop, loss of power or overheating. Grounded tools
must use 3-wire extension cords that have 3-prong plugs and receptacles.
RECOMMENDED SIZES OF EXTENSION CORDS
120 VOLT ALTERNATING CURRENT TOOLS
Tool's
Ampere
Rating
3-6
6-8
8-10
10-12
12-16
Cord Size in A.W.G.
Cord Length in Feet
25 50 100 150
18 16 16 14
18 16 14 12
18 16 14 12
16 16 14 12
14 12
Wire Sizes in mm2
Cord Length in Meters
15 30 60 120
0.75 0.75 1.5 2.5
0,75 1.0 2,5 4,0
0,75 1.0 2,5 4,0
1,0 2.5 4,0 --
NOTE: The smaller the gauge number, the heavier the cord.
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