Owner's Manual

3/8 in. PROFESSIONAL DRILL-DRIVER

Variable Speed / Reversible

Double Insulated

Model No. 315.279940

Save this manual for future reference

_, CAUTION: Read and follow all Safety Rules and Operating Instructions before first use of this product.

Customer Help Line: 1-800-932-3188

Sears Roebuck and Co., Hoffman Estates, IL 60179 USA

Visit the Craftsman web page: www.sears.com/craftsman

972000-826

3-01

???Safety

???Features

???Assembly

???Operation

???Maintenance

???Parts List

0??0s

,_ WARNING: Read and follow all instructions.

Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury.

Do not abuse the cord. Never use the cord to carry the tools or pull the plug from an outlet. Keep cord away from heat, oil, sharp edges, or moving pads.

SAVE THESE INSTRUCTIONS

Work Area

???Keep your work area clean and well lit. Cluttered benches and dark areas invite accidents.

Do not operate power tools in explosive atmo- spheres, such as in the presence of flammable liquids, gases, or dust. Power tools may create sparks which may ignite the dust or fumes.

Keep bystanders, children, and visitors away while

operating a power tool. Distractions can cause you to lose control.

Electrical Safety

???Double insulated tools are equipped with a polar- ized plug (one blade is wider than the other). This plug will fit in a polarized 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 a polarized outlet. Do not

change the plug in any way. Double insulation [] eliminates the need for the three-wire grounded power cord and grounded power supply system.

Replace damaged cords immediately. Damaged cords increase the risk of electric shock.

When operating a power tool outside, use an outdoor extension cord marked "W-A" or "W".

These cords are rated for outdoor use and reduce the risk of electric shock.

Personal Safety

???Stay alert, watch what you are doing and use

common sense when operating a power tool. Do not use tool while tired or under the influence of

drugs, alcohol, or medication. A moment of inatten- tion while operating power tools may result in serious personal injury.

???Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, clothing, and gloves away from moving parts. Loose clothes, jewelry, or long hair can be caught in moving parts.

???Avoid accidental starting. Be sure switch is off before plugging in. Carrying tools with your finger on the switch or plugging in tools that have the switch on, invites accidents.

Remove adjusting keys or wrenches before turning

Avoid body contact with grounded surfaces, such as pipes, radiators, ranges, and refrigerators. There

is an increased risk of electric shock if your body is grounded.

Don'texpose power tools to rain or wet conditions.

Water entering a power tool will increase the risk of electric shock.

the tool on. A wrench or a key that is left attached to a rotating part of the tool may result in personal injury.

Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the tool in unexpected situations.

Use safety equipment. Always wear eye protection.

Dust mask, nonskid safety shoes, hard hat, or hearing

Tool Use and Care

Use clamps or another practical way to secure and support the workpiece to a stable platform. Holding the work by hand or against your body is unstable and may lead to loss of control.

???Do not force tool. Use the correct tool for your application. The correct tool will do the job better and safer at the rate for which it is designed.

???Do not use tool if switch does not turn it on or off.

Any tool that cannot be controlled with the switch is dangerous and must be repaired.

???Disconnect the plug from power source before making any adjustments, changing accessories, or storing the tool. Such preventive safety measures reduce the risk of starting the tool accidentally.

???Store idle tools out of the reach of children and

other untrained persons. Tools are dangerous in the hands of untrained users.

???Maintain tools with care. Keep cutting tools sharp and clean. Properly maintained tools with sharp cutting edges are less likely to bind and are easier to control.

???Check for misalignment or binding of moving parts, breakage of parts, and any other condition that

may affect the tool's operation. If damaged, have the tool serviced before using. Many accidents are caused by poorly maintained tools.

???Use only accessories that are recommended by the manufacturer for your model. Accessories that may be suitable for one tool, may become hazardous when used on another tool.

Service

???Tool service must be performed only by qualified repair personnel. Service or maintenance performed by unqualified personnel could result in a risk of injury.

???When servicing a tool, use only identical replace- ment parts. Follow instructions in the Maintenance section of this manual. Use of unauthorized parts or failure to follow Maintenance Instructions may create a risk of electric shock or injury.

KNOW YOUR DRILL-DRIVER

See Figure 1.

Before attempting to operate your drill-driver, familiarize

yourself with all operating features and safety require- ments.

,_ WARNING: Carefully read through this entire owner's manual before using your new drill-driver. Pay close

attention to the Rules For Safe Operation, Warnings and Cautions. If you use your drill-driver properly and only for what it is intended, you will enjoy years of safe, reliable service.

ELECTRICAL CONNECTION

Your drill-driver has a precision built electric motor. It should be connected to a power supply that is 120 volts, 60 Hz, AC only (normal household current). Do not operate this tool on direct current (DC). A substantial voltage drop will cause a loss of power and the motor will overheat. If your drill-driver does not operate when plugged into an outlet, double-check the power supply.

_, WARNING: Do not allow familiarity with your drill- driver to make you careless. Remember that a careless

fraction of a second is sufficient to inflict severe injury.

KEYLESS CHUCK

Your drill-driver has a keyless chuck that allows you to hand tighten or release drill bit in the chuck jaws.

SWITCH

To turn your drill-driver ON, depress the switch trigger. Release switch trigger to turn your drill-driver OFF.

SWITCH LOCK

The switch trigger can be locked in the OFF position. This

feature helps reduce the possibility of accidental starting tool when not in use.

FORWARD/REVERSE SELECTOR

(DIRECTION OF ROTATION SELECTOR)

Your drill-driver has a forward/reverse selector located above the switch trigger.

VARIABLE SPEED

This tool has a variable speed switch that delivers higher speed with increased trigger pressure. Speed is controlled by the amount of switch trigger depression,

TWO SPEED GEAR TRAIN

Your drill-driver has a two speed gear train designed for drilling or driving at HI or LO speeds. A slide switch is located on top of your drill-driver to select either HI or LO

speed.

BIT STORAGE

When not in use, bits provided with your drill-driver can be placed in the storage area located on the top of the motor housing.

AUXILIARY HANDLE

An auxiliary handle is packed with your drill-driver for ease of operation and to help prevent loss of control,

APPLICATIONS

(Use only for the purpose listed below)

???Drilling in wood,

???Drilling in ceramics, plastics, fiberglass, and lami- nates.

???Drilling in both hard and soft metals.

???Using driving accessories, such as driving screws with screwdriver bits.

???Mixing paints.

TWO SPEED

GEARTRAIN(HI-LO)

AUXILIARY

HANDLE

KEYLESS

CHUCK

TORQUE SWITCH

ADJUSTMENT TRIGGER

RING

SCREWDRIVERBITS_

BIT STORAGEAREA

DIRECTIONOF

ROTATIONSELECTOR

(FORWARD/REVERSE)

LOCK-ON

BuIrON

Fig. 1

,_ WARNING: If any parts are missing, do not operate your drill-driver until the missing parts are replaced.

Failure to do so could result in possible serious personal injury.

AUXILIARY HANDLE

See Figure 2.

WINGSCREW

AUXlLIAR_

HANDLE

TO LOOSEN

TORQUE

ADJUSTMENT

RING

OI_TIGHTEN

GROOVE

An auxiliary handle is packed with your drill-driver for ease of operation and to help prevent loss of control. The handle can be rotated 360??.

Note: For convenience and ease of starting threads, the hex nut has been trapped inside the molded slot in the auxiliary handle.

TO INSTALL:

???Unplug your drill-driver.

_1 WARNING: Failure to unplug your drill-driver could result in accidental starting causing serious injury.

???Place ring of handle over the chuck and torque adjustment ring. Note: Notches in handle fits in a groove behind torque adjustment ring.

???Once in position behind torque adjustment ring, rotate handle to desired angle.

???Thread wing screw into handle insert.

???Tighten wing screw securely.

SWITCH

See Figure 3.

To turn your drill ON, depress the switch trigger. Release switch trigger to turn your drill OFF.

FORWARD/REVERSE

SELECTOR

CENTERPOSITION (LOCK)

SWITCH LOCK-ON

TRIGGER BUTTON

TO INCREASESPEED,

DEPRESSSWITCHTRIGGERFig. 3

LOCK-ON BUTTON

See Figure 3.

Your drill is equipped with a lock-on feature which is convenient when continuous drilling for extended periods of time is required. To lock-on, depress the switch trigger, push in and hold the lock-on button located on the side of the handle, then release switch trigger. Release lock-on button and your drill will continue running.

To release the lock, depress the switch trigger and release.

If you have the lock-on feature engaged during use and your drill becomes disconnected from power supply, disengage the lock-on feature immediately.

VARIABLE SPEED

See Figure 3.

Your drill has a variable speed switch designed to allow operator control of speed and torque limits. The speed and torque of your drill can be increased by depressing the switch trigger.

Note: Depress switch trigger all the way for maximum . speed and torque of your drill. Depress switch trigger only part of the way for less speed and torque.

Avoid running your drill at low speeds for extended periods of time. Running at low speeds under constant usage may cause your drill to become overheated. If this occurs, cool your drill by running it without a load and at full speed.

The following guidelines may be used in determining correct speed for various applications:

???Low speed is ideal when minimum speed and power is required. For example, starting holes without center

punching, driving screws, mixing paint, and drilling in ceramics.

???Medium speed is suitable for drilling hard metals, plastics, and laminates.

???High speed produces best results when maximum power is required. For example, drilling in wood; soft metals such as aluminum, brass, and copper, and when using driving accessories.

TWO SPEED GEAR TRAIN

See Figure 4.

Your drill has a two-speed gear train designed for drilling or driving at LO (1) or HI (2) speeds. A slide switch is located on top of your drill to select either LO (1) or HI (2) speed. When using drill in the LO (1) speed range, speed will decrease and unit will have more power and torque. When using drill in the HI (2) speed range, speed will increase and unit will have less power and torque. Use LO (1) speed for high power and torque applications and HI (2) speed for fast drilling or driving applications.

TWO SPEED

GEARTRAIN(HI-LO}

LO

SPEED

HI

Fig. 4

SWITCH LOCK

See Figure 5.

The switch trigger can be locked in the OFF position. This feature can be used to prevent the possibility of accidental starting when not in use. To lock switch trigger, place the direction of rotation selector in center position.

SELECTOR

CENTERPOSITIONREVERSE

(LOCK)

FORWARD

Fig. 5

REVERSIBLE

See Figure 5.

This tool has the feature of being reversible. The direction of rotation is controlled by a selector located above the switch trigger. With the drill held in normal operating position, the direction of rotation selector should be positioned to the left of the switch for drilling. The drilling direction is reversed when the selector is to the right of the switch. When the selector is in center position, the switch trigger is locked.

_i CAUTION: To prevent gear damage, always allow chuck to come to a complete stop before changing the direction of rotation or the two speed gear train (hi-lo).

To stop, release switch trigger and allow the chuck to come to a complete stop.

_lb WARNING: Your drill should never be connected to power supply when you are assembling parts,

making adjustments, installing or removing drill bits, cleaning, or when not in use. Disconnecting your drill will prevent accidental starting that could cause serious personal injury.

KEYLESS CHUCK

See Figure 6.

A keyless chuck has been provided with your drill to allow for easy installation and removal of bits. As the name implies, you can hand tighten or release drill bits in the chuck jaws. Arrows on the chuck indicate which direction to rotate the chuck sleeve in order to LOCK (tighten) or UNLOCK (release) the chuck jaws. Loosen the chuck sleeve by rotating it counterclockwise with one hand. Insert drill bit straight into the chuck the full length of the

jaws, and tighten securely by rotating the chuck sleeve in clockwise direction.

UNLOCK

(Release)

JAWS

CHUCK ,_

DRILLBIT

LOCK

(Tighten) CHUCKSLEEVE

Fig. 6

_IL WARNING: Do not hold chuck sleeve with one hand and use power of the drill to tighten chuck jaws on drill bit. Chuck sleeve could slip in your hand or your hand could slip and come in contact with rotating drill bit. This could cause an accident resulting in serious personal injury.

ADJUSTABLE TORQUE CLUTCH

Your drill is equipped with an adjustable torque clutch for driving different types of screws into different materials. The proper setting depends on the type of material and the size of screw you are using.

TO ADJUST TORQUE

??? Identify the twenty four torque indicator settings located on the front of your drill. See Figure 7.

??? Rotate adjusting ring to the desired setting. 1 - 4 For driving small screws.

???5 - 8 For driving screws into soft

material.

???9 - 12 For driving screws into soft and

hard materials.

???13 - 16 For driving screws in hard wood.

???17 - 20 For driving large screws.

???21 - ,11 For heavy drilling.

TO DECREASE ADJUSTING

TORQUERING

Note: Remember the two-speed feature (HI-LO) when setting torque. The amount of torque will vary depending on which speed setting you have your drill-driver. Switching to LO speed will increase torque. Switching to HI speed will decrease torque.

Fig. 8

,_ WARNING: Always wear safety goggles or safety glasses with side shields when operating your drill.

Failure to do so could result in dust, shavings, loose particles or foreign objects being thrown into your eyes, causing possible serious injury.

DRILLING

See Figure 9.

When drilling hard smooth surfaces.use a center punch to mark desired hole location. This will prevent the drill bit from slipping off center as the hole is started. However, the low speed feature allows starting holes without center punching if desired. To accomplish this, simply operate your drill at a low speed until the hole is started.

The material to be drilled should be secured in a vise or with clamps to keep it from turning as the drill bit rotates. Hold tool firmly and place the bit at the point to be drilled. Depress the switch trigger to start tool.

Move the drill bit into the workpiece applying only enough pressure to keep the bit cutting. Do not force or apply side pressure to elongate a hole.

Fig. 9

_k WARNING: Be prepared for binding or bit breakthrough. When these situations occur, drill has

a tendency to grab and kick opposite to the direction of rotation and could cause loss of control when breaking through material. If not prepared, this loss of control can result in possible serious injury.

When drilling metals, use a light oil on the drill bit to keep it from overheating. The oil will prolong the life of the bit and increase the drilling action.

If the bit jams in workpiece or if the drill stalls, release switch trigger immediately. Remove the bit from the workpiece and determine the reason for jamming.

CHUCK REMOVAL

See Figure 10, 11, and 12.

The chuck must be removed in order to use some

accessories. To remove:

???Unplug your drill.

,_i WARNING: Failure to unplug your drill could result in accidental starting causing serious injury.

???Place two speed gear train in the low setting and rotate torque adjusting ring to the maximum torque setting.

???Insert a 8 mm (5/16 in.) or larger hex key wrench into the chuck of your drill and tighten the chuck jaws securely.

???Tap the hex key wrench sharply with a mallet in a clockwise direction. See Figure 10.

???This will loosen the screw in the chuck for easy removal.

TORQUE GEAR TRAIN(HI-LO)

ADJUSTING

RING

CHUCK

JAWS

???Open the chuck jaws and remove hex key wrench. Remove the chuck screw by turning it in a clockwise direction. See Figure 11.

Note: The chuck screw has left hand threads.

SCREWDRIVER

Fig. 11

???Insert hex key wrench into chuck and tighten chuck jaws securely. Tap sharply with a mallet in a counterclockwise direction. This will loosen the chuck on the spindle. It can now be unscrewed by hand.

See Figure 12.

Fig. 12

TO RETIGHTEN A LOOSE CHUCK

The chuck may become loose on the spindle and develop a wobble.

To tighten, follow these steps:

???Unplug your drill.

,_ WARNING: Failure to unplug your drill could result in accidental starting causing serious; injury.

???Open the chuck jaws.

???Insert hex key wrench into chuck and tighten chuck jaws securely. Tap hex key wrench sharply with a mallet in a clockwise direction. This will tighten the chuck on the spindle.

???Open the chuck jaws and remove the hex key wrench.

???Tighten the chuck screw.

Note: The chuck screw has left hand threads.

I 1]=1

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 pads. 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 pads. 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, spackling compounds, or plaster. The chips and grindings frem these materials are highly abrasive to electric tool pads, such as bearings, brushes, commutators, etc. Consequently, it is not recommended that this toot be used for extended work on any fiberglass material, wallboard, spackling compounds, or piaster. 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.

DOUBLEINSULATION

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 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'sjacket will be marked WA.

,_IL 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.

_ll 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.

Para pedlr servl??_O de reparac_6n a domlclho, y para ordenar plezas con entrega a domlclho'

1-888-SU-HOGAR sM

(1-888-784-6427)

Au Canada pour service en franqals'

1-877-LE-FOYER s,_

(1-877-533-6937)