Ryobi D552HK Operator's Manual
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Ryobi D552HK Operator's Manual

Ryobi D552HK Operator's Manual

1/2 in. hammer drill two-speed/reversible double insulated
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Your hammer drill has been engineered and manufactured to our high standard for dependability, ease of operation, and
operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.
WARNING:
To reduce the risk of injury, the user must read and understand the operator's manual before using
this product.
Thank you for your purchase.
SAVE THIS MANUAL FOR FUTURE REFERENCE
OPERATOR'S MANUAL
1/2 in. HAMMER DRILL
TWO-SPEED/REVERSIBLE
DOUBLE INSULATED
D552H

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Summary of Contents for Ryobi D552HK

  • Page 1 Your hammer drill has been engineered and manufactured to our high standard for dependability, ease of operation, and operator safety. When properly cared for, it will give you years of rugged, trouble-free performance. WARNING: To reduce the risk of injury, the user must read and understand the operator's manual before using this product.

  • Page 2: Table Of Contents

    The replacement power tool will be covered by the limited warranty for the balance of the two year period from the date of the original purchase. WHAT THIS WARRANTy COVERS: This warranty covers all defects in workmanship or materials in your RYOBI power ®...

  • Page 3: General Safety Rules

    WARNING! Read all instructions. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury. The term “power tool” in all of the warnings listed below refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool. SAVE THESE INSTRUCTIONS WORk AREA SAFETy  keep work area clean and well lit.

  • Page 4: Specific Safety Rules

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

  • Page 5: Symbols

    Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer. SyMBOL NAME Volts Amperes Hertz Watt Minutes Alternating Current Direct Current No Load Speed...

  • Page 6: Symbols

    To avoid serious personal injury, do not attempt to use this product until you read thoroughly and understand completely the operator’s manual. If you do not understand the warnings and instructions in the operator’s manual, do not use this product. Call Ryobi customer service for assistance.

  • Page 7: Electrical

    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 the internal metal motor components with protecting insulation. Double insulated tools do not need to be grounded.

  • Page 8: Features

    The two-speed gear train is designed for drilling or driving at LO (1) or HI (2) speeds. A switch is located on the side of your drill for selecting either LO (1) or HI (2) speed. VARIABLE SPEED The variable speed switch trigger delivers higher speed with increased trigger pressure and lower speed with decreased trigger pressure.

  • Page 9: Assembly

    Failure to comply could result in accidental starting and possible serious personal injury. OPERATION SWITCH TRIGGER SWITCH TRIGGER See Figure 2. To turn the drill ON, depress the switch trigger. To turn it OFF, release the switch trigger. Fig. ...

  • Page 10: Operation

    The drill has a two-speed gear train designed for drilling or driving at LO (1) or HI (2) speeds. A switch is located on the side of the 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.

  • Page 11: Installing Bits

     Open or close the chuck jaws to a point where the opening is slightly larger than the bit size you intend to use. Also, raise the front of the drill slightly to keep the bit from falling out of the chuck jaws.
  • Page 12 Adjust the depth stop rod so that the drill bit extends beyond the end of the rod to the required drilling depth. When drilling holes with the depth stop rod installed, the desired hole depth has been reached when the end of the rod comes in contact with the surface of the workpiece.
  • Page 13  Plug the drill into power supply source.  Hold the drill firmly and place the bit at the point to be drilled.  Depress the switch trigger to start the drill. Do not lock the switch ON for jobs where the drill may need to be stopped suddenly.

  • Page 14: Maintenance

    For maximum performance, use carbide-tipped masonry impact bits or designated hammer drill bits when drilling holes in brick, tile, concrete, etc.  Slide adjustment button on hammer drill left for hammer mode.  Apply light pressure and medium speed for best results in brick.

  • Page 15: Maintenance

     Open chuck jaws using the provided chuck key.  Insert a 5/16 in. or larger hex key into the chuck of the drill and tighten the chuck jaws securely.  Tap the hex key sharply with a mallet in a clockwise direction.

  • Page 16: Parts Ordering / Service

    1-800-55-579. • HOW TO OBTAIN CUSTOMER OR TECHNICAL SUPPORT: To obtain Customer or Technical Support please contact us at 1-800-55-579. Ryobi is a registered trademark of Ryobi Limited used under license. ® 987000-001 -1-08 (REV:01) OPERATOR’S MANUAL 1/2 in. HAMMER DRILL...

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D552h

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