KOBALT 4913879 Brushless Hammer Drill User Manual

KOBALT 4913879 Brushless Hammer Drill

PRODUCT SPECIFICATIONS

41°F (5°C) – 104°F (40°C)

PACKAGE CONTENTS

E

| Direction-of-rotation selector (forward/center-lock/reverse)
F| Variable-speed trigger switch
PART| DESCRIPTION
---|---
G| LED work light
H| Auxiliary handle
I| Belt clip (with screw)
J| Bit holder (with screw)
K| Double ended bit
L| Handle

WARNING

• Remove the tool from the package and examine it carefully. Do not discard the carton or any packaging material until all parts have been examined.
• If any part of the tool is missing or damaged, do not attach the battery pack or use the tool until the part has been repaired or replaced. Failure to heed this warning could result in serious injury.

SAFETY INFORMATION

Please read and understand this entire manual before attempting to assemble or operate this product. If you have any questions regarding the product, please call customer service at 888-3KOBALT (888-356-2258) , 8 a.m. – 8 p.m., EST, Monday – Sunday. You could also contact us at partsplus@lowes.com.

WARNING

• The operation of any power tool can result in foreign objects being thrown into your 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 using a wide-vision safety mask over eyeglasses or standard safety glasses with shields. Always use eye protection marked to comply with ANSI Z87.1.
• Some dust created by power sanding, sawing, grinding, drilling and other construction activities contain chemicals known to the state of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:
  • Lead from lead-based paints,
  • Crystalline silica from bricks and cement and other masonry products, and
  • Arsenic and chromium from chemically treated lumber.
• Your risk from these exposures varies, depending on how often you do this type of work.
  To reduce your exposure to this chemical: work in a well-ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.

Know the Tool
To operate this tool, carefully read this manual and all labels affixed to the tool before using it.
Keep this manual available for future reference.

Important
This tool should be serviced only by a qualified service technician.
Read All Instructions Thoroughly

Some of the following symbols may be used on this tool. Please study them and their meaning.
Proper interpretation of these symbols will allow you to operate the tool better and more safely.

0

| No-load Speed
RPM| Revolutions per Minute| BPM| Beats per Minute
…/min| Revolutions or Strokes per Minute|

or d.c.

| Direct Current
” or in.| Inch| in. lbs.| Inch-Pound
N m| Newton Meter| | To reduce the risk of injury, always wear eye protection.
| A danger, warning, or caution. It means

‘Attention! Your safety is involved.’

| | To reduce the risk of injury, user must read instruction manual.

General Power Tool Safety Warnings

WARNING

• Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
  Save all warnings and instructions for future reference
  The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

Work Area Safety

• Keep work area clean and well lit. Cluttered or dark areas invite accidents.
• Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks, which may ignite the dust or fumes.
• Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

Electrical Safety

• Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce the risk of electric shock.
• Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
• Do not expose power tools to rain or wet conditions. Water entering a power tool will increase risk of electric shock.
• Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
• When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
• If operating a power tool in a damp location is unavoidable, use a ground fault circuit interrupter (GFCI) protected supply. Use of a GFCI reduces 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 a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.
• Use personal protective equipment. Always wear eye protection. Protective equipment such as a dust mask, non-skid safety shoes, hard hat or hearing protection used for appropriate conditions will reduce personal injuries.
• Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energising power tools that have the switch on invites accidents.
• Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.
• Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
• Dress properly. Do not wear loose clothing or jewelry. Keep your hair and clothing away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.
• If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust-related hazards.
• Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a second.
• Power tool use and care
• Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
• Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.
• Disconnect the plug from the power source and/or remove the battery pack,if detachable, from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
• Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.
• Maintain power tools and accessories. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
• Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
• Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.
• Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces do not allow for safe handling and control of the tool in unexpected situations.

Battery Tool Use and Care

• Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
• Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
• When battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
• Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.
• Do not use a battery pack or tool that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behavior resulting in fire, explosion or risk of injury.
• Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 265 °F (130 °C) may cause explosion.
• Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.

Service

• Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.
• Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorized service providers.

Drill Safety Warnings

Safety Instructions for All Operations

• Wear ear protectors when impact drilling. Exposure to noise can cause hearing loss.
• Use the auxiliary handle(s). Loss of control can cause personal injury.
• Hold the power tool by insulated gripping surfaces, when performing an operation where the cutting accessory or fasteners may contact hidden wiring. Cutting accessory or fasteners contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.

Safety Instructions When Using Long Drill Bits

• Never operate at higher speed than the maximum speed rating of the drill bit. At higher speeds, the bit is likely to bend if allowed to rotate freely without contacting the workpiece, resulting in personal injury.
• Always start drilling at low speed and with the bit tip in contact with the workpiece. At higher speeds, the bit is likely to bend if allowed to rotate freely without contacting the workpiece, resulting in personal injury.
• Apply pressure only in direct line with the bit and do not apply excessive pressure. Bits can bend causing breakage or loss of control, resulting in personal injury.

Additional Warnings

• Use only with the battery packs and chargers listed below:

KB 224-03; KB 424-03; KB 524-03;

KB 624-03; KXB 424-03; KXB 824-03

| KRC 2445-03; KRC 2490-03;

KRC 2404-03; KDPC 124-03;

KCH 2401-03; KCH 2411-03

PREPARATION

Know Your Hammer Drill
Before attempting to use the hammer drill, familiarize yourself with all of its operating features and safety requirements.

WARNING

• Do not allow familiarity with the hammer drill to cause carelessness. Remember that one careless moment is enough to cause severe injury. Before attempting to use any tool, be sure to become familiar with all of the operating features and safety instructions.
• Do not attempt to modify this tool or create accessories not recommended for use with this tool. Any such alteration or modification is misuse and could result in a hazardous condition leading to possible serious personal injury.

OPERATING INSTRUCTIONS

1. To Attach Battery Pack
   a. Align the raised portion on the battery pack with the grooves on the bottom of the tool, and then slide the battery pack onto the tool as shown.
   b. Make sure that the latch on the battery pack snaps into place and the battery pack is secured to the tool before beginning operation. NOTICE: When placing the battery pack on the tool, be sure that the raised rib on battery pack aligns with the groove on the tool and the latches snap into place properly. Improper assembly of the battery pack can cause damage to internal components.
   To Detach Battery Pack
   a. Press the battery-release buttons to release the battery pack.
   b. Pull the battery pack backward to remove it from the tool.
   WARNING

   • Battery tools are always in operating condition. Therefore, always remove the battery pack when the tool is not in use or when carrying the tool at your side.

2. Direction-of-Rotation Selector
   (Forward/Center Lock/Reverse)
   The direction of bit rotation is reversible and is controlled by the selector located above the trigger switch (F). With the hammer drill held in the normal operating position, pointing away from you:
   a. Position the direction-of-rotation selector (E) to the left of the tool for forward rotation to drill in or drive the screws in.
   b. Position the direction-of-rotation selector to the right of the tool for reverse rotation to remove screws.
   c. Setting the selector in the center position locks the trigger to helps reduce the possibility of accidental starting when the tool is not in use.
   NOTICE: To prevent gear damage, always allow the hammer drill to come to a complete stop before changing the direction of rotation.
   NOTICE: The hammer drill will not run unless the direction-of-rotation selector is engaged fully to the left or right.

3. Variable-speed Trigger Switch
   a. Position the direction-of-rotation selector (E) to the left or right of the tool as needed to unlock the trigger switch (F).
   b. To turn the hammer drill ON, depress the trigger switch (F).
   c. To turn it OFF, release the trigger switch.
   Variable Speed
   The variable-speed trigger switch delivers higher speed with increased trigger pressure and lower speed with decreased trigger pressure.
   Electric Brake
   The hammer drill is equipped with an electric brake. When the trigger switch is released, the electric brake engages automatically to quickly stop rotation.

4. Two-Speed Gear Box
   The hammer drill has a two-speed gear box designed for drilling or driving at two different variable-speed ranges. The gear selector (D) is located on the top of the hammer drill, allowing you to select either “1” (Low) speed range or “2” (High) speed range.
   a. Setting “1” will deliver lower speeds and increased power and torque. Use setting “1” for heavy-duty work or driving screws.
   b. Setting “2” will deliver higher speeds and reduced power and torque. Use setting “2” for drilling wood and wood composites and for using abrasive and polishing accessories.
   NOTICE: Never change gears while the tool is running. Failure to obey this caution could result in serious damage to the hammer drill.

5. LED Work Light
   The LED work light (G), located on the base of the hammer drill, will illuminate when the trigger switch is depressed. This provides additional light on the surface of the work piece for operation in lowerlight areas.
   The LED work light will turn off within approximately 10 seconds after the variable-speed trigger switch is released.
   The LED work light will flash rapidly if the tool has stopped automatically when the tool and/or battery pack became overloaded or too hot. Please wait for the tool and/or battery pack to cool down, at which point it can be started again.
   The LED work light will flash slowly to indicate that the battery charge is very low. Please recharge the battery pack.

6. Keyless Chuck
   The hammer drill features a keyless chuck (A) to tighten or release drill bits in the chuck jaws without using an additional tool. The arrows on the chuck indicate the direction in which to rotate the chuck body in order to GRIP (tighten) or OPEN (loosen) the chuck jaws on the drill bit.

7. Mode Selector
   The mode selector (C) allows the tool to be set for various applications.
   Rotate the selector clockwise or counterclockwise, depending on the application.
   Driving mode : For driving screws.
   Drilling mode : For drilling in wood, metal, plastic, or other materials.
   Hammer drilling mode : For drilling with hammer action in concrete, masonry, or similar hard material.
   NOTICE: Do not change the mode setting when the tool is running.

8. Adjustable Torque Clutch
   The torque adjustment ring (B) can be set any of 24 torque settings when the tool is in the driving mode .
   Adjust the torque by rotating the torque adjustment ring (B). The higher the torque setting number, the more force the hammer drill produces to turn an object.
   The proper setting depends on the job and the type of bit, fastener, and material you will be using. In general, use greater torque for larger screws. If the torque is too high, the screws may be damaged or broken.
   Torque adjustment is not available for the drilling or hammer mode.
   NOTICE: Do not change the torque setting when the tool is running.

9. Installing and Removing the Belt Clip
   a. Align the rib of the belt clip (I) with the hole on the base of the hammer drill.
   b. Insert the screw and tighten the screw securely with a Phillips-head screwdriver (not included).
   c. To remove the belt clip, use a Phillips-head screwdriver to loosen the screw holding the belt clip to the hammer rill.
   NOTE: The belt clip can be installed on the right or left side of the tool.

10. Installing and Removing the Bit Holder
    a. Align the rib of the bit holder (J) with the hole on the base of the hammer drill.
    b. Insert the screw and tighten the screw securely with a Phillips-head screwdriver (not included).
    c. To remove the bit holder, use a Phillips-head screwdriver to loosen the screw holding the bit holder to the hammer drill.
    NOTE: The bit holder can be installed on the right or left side of the tool.

11. Auxiliary Handle
    This hammer drill is equipped with an auxiliary handle (H). For ease of operation, you can use the handle with either the left or the right hand. The handle can be locked in the two positions shown in Fig.11.
    To install the auxiliary handle:
    a. Place the direction-of-rotation selector (E) in the center lock position.
    b. Loosen the auxiliary handle (H) by turning the grip handle counterclockwise.
    c. Align the raised portion on the auxiliary handle with the grooves on gear box of the hammer drill, then slide the auxiliary handle onto the tool as shown.
    d. Securely tighten the auxiliary handle in place by turning the grip handle clockwise.
    To remove the auxiliary handle:
    a. Place the direction-of-rotation selector (E) in the center lock position.
    b. Loosen the auxiliary handle (H) by turning the grip handle counterclockwise.
    c. Remove the auxiliary handle from the tool.
    WARNING

12. For safety and ease of operation, securely tighten the auxiliary handle by turning the grip handle clockwise before every use.

13. Bits
    Installing Bits
    a. Place the direction-of-rotation selector (E) in the center lock position.
    b. Open or close the chuck jaws to a point where the opening is slightly larger than the shank of the bit you intend to use.
    c. Insert the bit.
    d. Tighten the chuck jaws securely on the bit.
    NOTICE: Rotate the chuck body in the direction of the arrow marked “GRIP” to close the chuck jaws.
    Do not use a wrench to tighten or loosen the chuck jaws.
    WARNING

    • Make sure to insert the drill bit straight into the chuck jaws. Do not tighten the chuck jaws if the drill bit is inserted at an angle as shown in Fig. 12b. This could cause the drill bit to be thrown from the hammer drill, resulting in possibly serious personal injury or damage to the chuck.
      Removing Bits
      a. Place the direction-of-rotation selector (E) in the center lock position.
      b. Open the chuck jaws.
      c. Remove the drill bit.
      WARNING

    • Do not hold the chuck body with one hand and use the power of the hammer drill to tighten or loosen the chuck jaws on the drill bit. The chuck body could slip in your hand, or your hand could slip and come in contact with the rotating bit.
      This could cause an accident resulting in serious personal injury.

14. Drilling
    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.
      a. Set the direction-of-rotation selector (E) to forward rotation.
      b. Secure the material to be drilled in a vise or with clamps to keep it from turning as the drill bit rotates.
      c. Hold the hammer drill firmly and place the bit at the point to be drilled.
      d. Depress the variable-speed trigger switch (F) to start the hammer drill.
      e. Move the drill bit into the work piece, applying only enough pressure to keep the bit drilling.
      Do not force the hammer drill or apply side pressure to elongate a hole. Let the tool do the work.
      f. When drilling hard, smooth surfaces, use a center punch (sold separately) to mark the desired location of the hole. This will prevent the drill bit from slipping off center as the hole is started.
      g. If the bit jams in the work piece or if the hammer drill stalls, stop the tool immediately.
      Remove the bit from the work piece and determine the reason for jamming.
      h. To stop the hammer drill, release the variable speed trigger switch and allow the tool to come to a complete stop.
      Drilling Wood
      a. For maximum performance, use high-speed steel or brad-point bits for drilling wood.
      b. Set the mode selector (C) to drilling mode for best performance.
      c. Begin drilling at a very low speed to prevent the bit from slipping off the starting point.
      d. Increase speed as the drill bit bites into the material.
      e. When drilling “through” holes, place a block of wood behind the work piece to prevent ragged or splintered edges on the back side of the hole.
      NOTICE: When drilling deep holes, the bit may overheat. Change the direction of rotation and pull out the bit frequently to clear wood chips from flutes.
      Drilling Metal
      a. For maximum performance, use high-speed steel bits for drilling metal or steel.
      b. Set the mode selector (C) to drilling mode for best performance.
      c. When drilling metals, use light oil on the drill bit to keep it from overheating. The oil will prolong the life of the bit and increase the drilling efficiency.
      d. Begin drilling at a very low speed to prevent the bit from slipping off the starting point.
      e. Maintain a speed and pressure which will allow cutting without overheating the bit.
      Applying too much pressure will:

    • Overheat the tool.

    • Wear the bearings.

    • Bend or burn bits.

    • Produce off-center or irregularly-shaped holes.
      Masonry Drilling
      a. For maximum performance, use carbide-tipped masonry bits when drilling holes in brick, concrete, etc.
      b. Set the mode selector (C) to hammer mode or best performance.
      c. Maintain a speed and pressure which will allow cutting without overheating the bit or the tool. Applying too much pressure will:

    • Overheat the tool.

    • Wear the bearings.

    • Bend or burn bits.

    • Produce off-center or irregularly-shaped holes.
      d. Apply light pressure and medium speed for best results in brick.
      e. Apply additional pressure for hard materials, such as concrete.
      f. Begin drilling at a very low speed to prevent the bit from slipping off the starting point.

15. Driving Screws
    Try to use standard-type screws for easy driving and improved grip.
    a. Install the correct driver bit.
    b. Set the mode selector (C) to driving mode for best performance.
    c. Ensure that the torque-adjustment ring is set to the most suitable setting. If in doubt, start with a low setting and gradually increase the setting as necessary. Do not change the torque setting when the tool is running.
    d. Use the correct speed range for the job and initially apply minimal pressure to the variablespeed trigger switch. Increase the speed only when full control can be maintained.
    e. It is advisable to drill a pilot hole first. This hole should be slightly longer than the screw to be driven and slightly thinner than the shank diameter of the screw. The pilot hole will act as a guide for the screw and will also make tightening the screw less difficult. When screws are positioned close to an edge of the material, a pilot hole will also help to prevent splitting of the wood.
    f. Use a countersinking bit (sold separately) to accommodate the screw head so that it does not protrude from the surface.
    g. Keep sufficient pressure on the drill to prevent the bit from turning out of the screw head.
    The screw head can easily become damaged, making it difficult to drive home or remove.
    h. To stop the hammer drill, release the trigger switch and allow the tool to come to a complete stop.
    CARE AND MAINTENANCE
    All maintenance should only be carried out by a qualified service technician.
    Cleaning
    Before cleaning or performing any maintenance, remove the battery pack from the tool.
    For safe and proper operation, always keep the tool and its ventilation slots clean.
    Always use only a soft, dry cloth to clean your hammer drill; never use detergent or alcohol.

16. Chuck Removal
    The keyless chuck (A) can be removed and replaced.
    a. Lock the trigger switch by placing the directionof- rotation selector (E) in the center position.
    b. Open the chuck jaws.
    c. Use a screwdriver (not included) to remove the chuck screw by turning it in a clockwise direction.
    d. Insert a 5/16-in. or larger hex key (not included) into the chuck of the hammer drill and securely tighten the chuck jaws around the hex key.
    e. Tap the hex key sharply with a mallet (not included) in a counterclockwise direction. This will loosen the chuck for easy removal.
    NOTICE: The chuck screw has left-handed threads. Attach a new chuck to the spindle and tighten the chuck screw.

TROUBLESHOOTING

WARNING
Place the direction-of-rotation selector (E) in the center lock position and detach the battery pack from the hammer drill before performing troubleshooting procedures.

pack.
Bit cannot be installed.| Chuck is not released.| Release the chuck.
Bit does not fit the

chuck.

| Use an appropriate bit or use a suitable adaptor.
Motor overheating.| Ventilation slots are obstructed.| Clean and clear the ventilation slots. Do not cover ventilation slots with hand during operation.
The LED work light

flashes rapidly.

| The tool has stopped working to protect internal circuits.| Release the trigger switch, wait for the tool to cool down, then and start the tool again.
The LED work light

flashes slowly.

| The battery pack charge is very low.| Charge the battery pack.

WARRANTY

For 5 years from the date of purchase, the power tool is warranted and for 3 years from date of purchase the battery & charger are warranted for the original purchaser to be free from defects in material and workmanship. This guarantee does not cover damage due to abuse, normal wear, improper maintenance, neglect, unauthorized repair/alteration, or expendable parts and accessories expected to become unusable after a reasonable period of use.
If you think your product meets the above guarantee criteria, please return it to the place of purchase with valid proof of purchase and the defective product will be repaired or replaced at no charge. This guarantee gives you specific legal rights, and you may also have other rights that vary from state to state.

Lowe’s Home Centers LLC. MOORESVILLE, NC 28117
Printed in China

ATTACH YOUR RECEIPT HERE
Serial Number Purchase Date

Questions, problems, missing parts? Before returning to your retailer, call our customer service department at 888-3KOBALT (888-356-2258), 8 a.m.-8 p.m., EST ,Monday-Sunday. You could also contact us at partsplus@lowes.com.

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