Metal Drilling; Masonry Drilling; General Maintenance; Operation - Craftsman 10137 - 1/2 in. Corded Hammer Drill Operator's Manual

Fig.8
METAL DRILLING
[] For maximum performance, use high speed steel bits
for metal or steel drilling.
[] Select normal drilling mode.
[] Begin drilling at a very low speed to prevent the bit
from slipping off the starting point.
[] Maintain a speed and pressure which allows cutting
without overheating the bit. Applying too much pres-
sure will:
Overheat the drill;
Wear the bearings;
Bend or burn bits; and
Produce off-center or irregular-shaped holes.
[] When drilling large holes in metal, start with a small bit,
then finish with a larger bit. Also, lubricate the bit with
oil to improve drilling action and increase bit life.
MASONRY DRILLING
[] For maximum performance, use carbide-tipped ma-
sonry impact bits when drilling holes in brick, tile,
concrete, etc.
[] Slide adjustment button on hammer drill left for ham-
mer mode.
[] Apply light pressure and medium speed for best results
in brick.
[] Apply additional pressure for hard materials such as
concrete.
[] When drilling holes in tile, practice on a scrap piece to
determine the best speed and pressure. Begin drilling
at a very low speed to prevent the bit from slipping off
the starting point.
A
A
WARNING" When servicing, use only identical
Craftsman replacement parts. Use of any other parts
may create a hazard or cause product damage.
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.
GENERAL MAINTENANCE
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, dust, oil, grease, etc.
,_ WARNING: Do not at any time let brake fluids,
gasoline, petroleum-based products, penetrating
oils, etc., come in contact with plastic parts. Chemi-
cals can damage, weaken or destroy plastic which
may result in serious personal injury.
Electric tools used on fiberglass material, wallboard,
spackling compounds, or plaster are subject to accel-
erated wear and possible premature failure because the
fiberglass chips and grindings are highly abrasive to bear-
ings, brushes, commutators, etc. Consequently, we do not
recommended using this tool for extended work on these
types of materials. However, if you do work with any of
these materials, it is extremely important to clean the tool
using compressed air.
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.
Only the parts shown on the parts list are intended to be
repaired or replaced by the customer. All other parts
should be replaced at a Sears Service Center.
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