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Owner's Manual /
Adjustable Variable Speed - Reversible
Double Insulated
3/8 in. PROFESSIONAL HAMMER DRILL
Model No.
315.277180
Save this manual for
future reference
_IL CAUTION: Read and
follow all Safety Rules and
Operating Instructionsbefore
first use of this product.
Sears, Roebuck and Co., Hoffman Estates, IL 60179 USA
972000-381
4-98
NRTL
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• Table Of Contents .......................................................................................................................................... 2
• Warranty ......................................................................................................................................................... 2
• Introduction..................................................................................................................................................... 2
• Rules For Safe Operation ........................................................................................................................... 3-5
• Product Specifications .................................................................................................................................... 6
• Unpacking ....................................................................................................................................................... 6
• Accessories .................................................................................................................................................... 6
• Features ......................................................................................................................................................... 7
• Operation ................................................................................................................................................... 8-14
• Maintenance ................................................................................................................................................. 15
• Exploded View and Repair Parts List............................................................................................ :.......: 16-17
• Parts Ordering/Service ............................................................................................................................... 18
FULL ONE YEAR WARRANTY ON CRAFTSMAN PROFESSIONAL HAMMER DRILL
If this rRAFT$1qA# Hammer Drill fails due to a defect in material or workmanship within one year from the date
of purchase, Sears will repair it, free of charge.
WARRANTY SERVICE IS AVAILABLE BY SIMPLY RETURNING THE TOOL TO THE NEAREST SEARS
STORE IN THE UNITED STATES.
This warranty gives you specific legal rights, and you may also have other rightswhich vary from state to state.
Sears, Roebuck and Co., Dept. 817WA, Hoffman Estates, IL 60179
Your hammer drill has many features for making your
drillingoperations more pleasant and enjoyable.
Safety, performance and dependability have been
given top priority inthe design of this drillmaking it
easy to maintain and operate.
_ CAUTION: Carefully read through this entire
owner's manual before using your new hammer
drill. Pay close attention to the Rules For Safe
Operation, Warnings and Cautions. If you use
your drill properly and only for what it is intended,
you will enjoy years of safe, reliable service.
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The purpose of safety symbols Is to attract your attention to possible dangers. The safety symbols, and
the explanations with them, deserve your careful attention and understanding. The safety warnings do
not by themselves eliminate any danger. The Instructions or warnings they give are not substitutes for
proper accident prevention measures.
SYMBOL MEANING
A
A
NOTE: Advises you of informationor instructionsvital to the operation or maintenance of the equipment.
DOUBLE INSULATION
Double insulation is a concept in safety, in electric
power tools which eliminates the need for the usual
three-wire grounded power cord. All exposed metal
parts are isolated from internal metal motor
components with protecting insulation. Double
insulated tools do not need to be grounded.
SAFETY ALERT SYMBOL:
Indicates danger, waming, or caution. May be used in conjunctionwith other symbols or picto-
graphs.
DANGER: Failure to obey a safety waming will resultin serious injury to yourself or to others,
Always follow the safety precautionsto reduce the dsk of fire, electdc shock and personal injury.
WARNING: Failure to obey a safety waming can result in serious injury to yourself or to others.
Always follow the safety precautionsto reduce the dsk of fire, electdc shock and personal injury.
CAUTION: Failure to obey a safety waming may result in property damage or personal injuryto
yourself or to others. Always follow the safety precautions to reduce the dsk of fire, electdc shock
and personal injury.
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 Store for repair. Always use
original factory replacement parts when servicing.
A WARNING: Do not attempt to operate this tool
until you have read thoroughly and understand
completely all instructions, safety rules, etc.
contained in this manual. Failure tocomply can
result in accidents involving fire, electric shock,
or sedous personal injury. Save owner's manual
and review frequently for continuing safe
operation, and instructingothers who may use
this tool.
READ ALL INSTRUCTIONS
KNOW YOUR POWER TOOL. Read owner's
manual carefully. Learn its applications and
limitations as well as the specific potential
hazards rel-atedto this tool.
GUARD AGAINST ELECTRICAL SHOCK by
preventing body contact with grounded surfaces.
For example; pipes, radiators, ranges, refrigera-
tor enclosures.
B KEEP GUARDS IN PLACE and in working
order.
KEEP WORK AREA CLEAN. Cluttered areas
and benches invite accidents.
AVOID DANGEROUS ENVIRONMENT. Don't
use power tools in damp or wet locations or
expose to rain. Keep work area well lit.
KEEP CHILDREN AND VISITORS AWAY. All
visitors should wear safety glasses and be kept a
safe distance from work area. Do not let visitors
contact tool or extension cord.
STORE IDLE TOOLS. When not in use, tools
should be stored in a dry and high or locked-up
place - out of the reach of children.
DON'T FORCE TOOL. It will do the job better
and safer at the rate for which it was designed.
USE RIGHT TOOL. Don't force small tool or
attachment to do the job of a heavy duty tool.
Don't use toolfor purpose not intended - for
example - A circular saw should never be used
for cuttingtree limbs or logs.
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RULES FOR SAFE OPERATION (Continued)
WEAR PROPER APPAREL. Do not wear loose
clothing or jewelry that can get caught in tool's
moving parts and cause personal injury. Rubber
gloves and nonskidfootwear are recommended
when working outdoors. Wear protective hair
covering to contain long hair and keep it from
being drawn into nearby air vents.
ALWAYS WEAR SAFETY GLASSES. Everyday
eyeglasses have only impact-resistant lenses;
they are NOT safety glasses.
PROTECT YOUR LUNGS. Wear a face or dust
mask if the operation is dusty.
PROTECT YOUR HEARING. Wear hearing
protection during extended periods of operation.
DON'T ABUSE CORD. Never carry tool by cord
or yank it to disconnect from receptacle. Keep
cord from heat, oil, and sharp edges.
SECURE WORK. Use clamps or a vise to hold
work. It'ssafer than using your hand and itfrees
both hands to operate tool.
DON'T OVERREACH. Keep proper footing and
balance at all times. Do not use on a ladder or
unstable support. Secure tools when working at
elevated positions.
MAINTAIN TOOLS WITH CARE. Keep tools
sharp and clean for best and safest performance.
Follow instructionsfor lubdcating and changing
accessories.
DISCONNECT TOOLS. When not in use, before
servicing, or when changing attachments,
blades, bits, cutters, etc., all tools should be
disconnected from power supply.
REMOVE ADJUSTING KEYS AND
WRENCHES. Form habit of checking to see that
keys and adjusting wrenches are removed from
chuck before turningtool on.
AVOID ACCIDENTAL STARTING. Don't carry
plugged-in tool with finger on switch. Be sure
switch isoff when plugging in.
MAKE SURE YOUR EXTENSION CORD IS IN
GOOD CONDITION. When using an extension
cord, be sure to use one heavy enough to carry
the current your productwilldraw. An undersized
cord will cause a drop in line voltage resultingin
loss of power and overheating, A wire gage size
(A,W.G.) of at least 16 is recommended for an
extension cord 100 feet or less in length. A cord
exceeding 100 feet is notrecommended. If in
doubt, use the next heavier gage. The smaller
the gage number, the heavier the cord.
OUTDOOR USE EXTENSION CORDS. When
tool is used outdoors, use only extension cords
suitable for use outdoors. Outdoor approved
cords are marked with the suffixW-A, for ex-
ample - SJTW-A or SJOW-A.
KEEP BITS CLEAN AND SHARP, Sharp bits
minimize stalling and kickback.
KEEP HANDS AWAY FROM DRILLING AREA.
Keep hands away from bits. Do not reach
underneath work while bit is rotating. Do not
attempt to remove material while bit is rotating.
NEVER USE IN AN EXPLOSIVE ATMO-
SPHERE. Normal sparking of the motor could
ignite fumes.
INSPECT TOOL CORDS PERIODICALLY and if
damaged, have repaired by an authorized
service facility. Stay constantly aware of cord
location.
INSPECT EXTENSION CORDS PERIODI-
CALLY and replace if damaged.
KEEP HANDLES DRY, CLEAN, AND FREE
FROM OIL AND GREASE. Always use a clean
cloth when cleaning. Never use brake fluids,
gasoline, petroleum-based products, or any
strong solvents to clean your tool.
STAY ALERT AND EXERCISE CONTROL.
Watch what you are doing and use common
sense. Do notoperate tool when you are tired.
Do not rush.
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RULESFORSAFEOPERATION(Continued)
CHECKDAMAGEDPARTS.Beforefurtheruse •
of the tool, a guard or other part that is damaged
should be carefully checked to determine that it
will operate properly and perform its intended •
function. Check for alignment of moving pads,
binding-of moving parts, breakage of parts,
mounting and any other conditionsthat may •
affect its operation. A guard or other part that is
damaged should be properly repaired or re-
placed by an authodzed service center.
DO NOT USE TOOL IF SWITCH DOES NOT
TURN IT ON AND OFF. Have defective switches
replaced by an authorized service center.
DRILLING INTO ELECTRICAL WIRING IN
WALLS CAN CAUSE DRILL BIT AND CHUCK •
TO BECOME ELECTRICALLY LIVE. Do not
touch the chuck or metal housing when drilling •
intoa wall; grasp only the insulated handle(s)
provided on the tool.
INSPECT FOR and remove all nails from lumber
before ddll!ng.
DRUGS, ALCOHOL, MEDICATION. Do not
operate this tool while under the influence of
drugs, alcohol, or any medication.
POLARIZED PLUGS. To reduce the dsk of
electdc shock, this tool has a polarized plug (one
blade is wider than the other). This plug willfit in
a poladzed outlet only one way. If the plug does
not fit fully in the outlet, reverse the plug. If it still
does not fit, contact a qualified electrician to
install the proper outlet. Do not change the plug
in any way.
WHEN SERVICING USE ONLY IDENTICAL
CRAFTSMAN REPLACEMENT PARTS.
SAVE THESE INSTRUCTIONS. Refer to them
frequently and use them to instructothers who
may use this tool. If you loan someone this tool,
loan them these instructionsalso.
_, Look for this symbol to point out important safety precautions. It means attention!!! Your
safety is involved.
,_ WARNING:
The operation of any hammer ddll can result in foreign objects being thrown intoyour eyes,
which can result in severe eye damage. Before beginning power tool operation, always wear
safety goggles or safety glasses with side shields and a full face shield when needed. We
recommend Wide Vision Safety Mask for use over eyeglasses or standard safety glasses
with side shields, available at Sears Retail Stores.
SAVE THESE INSTRUCTIONS
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Chuck 3/8in.Keyless
ChuckCapacity 1/32in.to318in.
Horsepower 1/2
Input 5.0Amperes
Rating 120volts,60Hz,AC
Switch AdjustableVariableSpeed- Reversible
No Load Speed 0 - 1200 RPM
Hammer Speed 0 - 60,000 BPM
Hammer Travel .028
Your hammer drill has been shippedcompletely
assembled except for the auxiliary handle and depth
gage rod. Inspect it carefully to make sure no
breakage or damage has occurred duringshipping. If
any pads are damaged or missing,contact your
nearest Sears Retail Store to obtain replacement pads
before attempting to operate hammer ddll. The
auxiliary handle, depth gage rod, and this owner's
manual are also included in the box.
The following recommended accessories are currently available at Sears Retail Stores.
• High Speed Bits (For wood or metal) 3/8 in. Max.
• Masonry Bits 1/2 in. Max.
• Wood Boring Bits 1 in. Max.
• Hole Saws 1 in. Max.
_k, WARNING: The use of attachments or accessories not listed mightbe hazardous.
_lb WARNING: If any pads are missing, do not
operate this tool until the missing parts are
replaced. Failure to do so could result in possible
sedous personal injury.
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