Craftsman 315.279940 - Manual (Page 12)

MAINTENANCE
GENERAL
All parts represent an important part of the double
insulation system and should be serviced only at a Sears
Service Center.
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use.
Use clean cloths to remove dirt, carbon dust, etc,
^ WARNING: Do not at any time let brake fluids,
gasoline, petroleum-based products, penetrating oils,
etc. come in contact with plastic parts. They contain
chemicals that can damage, weaken or destroy
plastic.
It has been found that electric tools are subject to
accelerated wear and possible premature failure when
they are used on fiberglass boats, sports cars, wallboard,
speckling compounds, or plaster. The chips and grindings
from these materials are highly abrasive to electric tool
parts, such as bearings, brushes, commutators, etc.
Consequently, it is not recommended that this tool be
used for extended work on any fiberglass material,
wallboard, spackling compounds, or plaster. During any
use on these materials, it is extremely important that the
tool is cleaned frequently by blowing with an air jet.
LUBRICATION
All of the bearings in this tool are lubricated with a suffi­
cient amount of high-grade lubricant for the life of the unit
under normal operating conditions. Therefore, no further
lubrication is required.
WARNING: Always wear safety goggles or safety
glasses with side shields during power tool operation
or when blowing dust. If operation is dusty, also wear
a dust mask.
DOUBLE INSULATION
Double insulation is a concept in safety in electric power
toots, which eliminates the need for the usual three-wire
grounded power cord. All exposed metal parts are
isolated from the internal metal motor components with
protecting insulation. Double insulated tools do not need
to be grounded.
IMPORTANT
Servicing of a tool with double insulation requires extreme
care and knowledge of the system and should be
performed only by a qualified service technician. For
service, we suggest you return the tool to your nearest
Sears Service Center for repair. Always use original
factory replacement parts when servicing.
EXTENSION CORDS
The use of any extension cord will cause some loss of
power. To keep the loss to a minimum and to prevent tool
overheating, use an extension cord that is heavy enough
to carry the current the tool will draw.
A wire gage size (A.W.G.) of at least 16 is recommended
for an extension cord 100 feet or less in length. When
working outdoors, use an extension cord that is suitable
for outdoor use. The cord's jacket will be marked WA,
/V CAUTION: Keep extension cords away from the
drilling area and position the cord so that it will not get
caught on lumber, tools, etc., during drilling operation.
WARNING: Check extension cords before each use.
If damaged replace immediately. Never use tool with
a damaged cord since touching the damaged area
could cause electrical shock resulting in serious injury.
Extension cords suitable for use with your drill are
available at your nearest Sears Retail Store.
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