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Owner's Manual &
Safety Instructions
19d
Model
HD81B
Battery and Charger Sold Separately
12V 1/4" Hex Impact Driver
WARNING: To prevent serious injury, User must read and
understand Owner's Manual. SAVE THIS MANUAL.
When unpacking, make sure that the product is intact and undamaged.
If any parts are missing or broken, please call 1-888-866-5797
as soon as possible. Reference 56567.

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Summary of Contents for Hercules HD81B

  • Page 1 Owner’s Manual & Safety Instructions Model HD81B Battery and Charger Sold Separately 12V 1/4" Hex Impact Driver WARNING: To prevent serious injury, User must read and understand Owner’s Manual. SAVE THIS MANUAL. When unpacking, make sure that the product is intact and undamaged.
  • Page 2: Important Safety Information

    IMPORTANT SAFETY INFORMATION GENERAL POWER TOOL SAFETY WARNINGS Personal Safety Read all safety warnings, instructions, illustrations 1. Stay alert, watch what you are doing and use and specifications provided with this power tool. common sense when operating a power tool. Failure to follow all instructions listed below may result Do not use a power tool while you are tired in electric shock, fire and/or serious injury.
  • Page 3 13. This product is not a toy. Service Keep it out of reach of children. 14. People with pacemakers should consult their 1. Have your power tool serviced by a qualified repair person using only identical physician(s) before use. Electromagnetic fields in replacement parts.
  • Page 4: Safety Instructions For All Operations

    10. Have servicing performed by a qualified Safety Instructions for All Operations repair person using only identical replacement parts. This will ensure that 1. Wear ear protectors when Impact drilling. the safety of the product is maintained. Exposure to noise can cause hearing loss. 11.
  • Page 5: Vibration Safety

    5. Always wear a NIOSH approved respirator and GROUNDING safety goggles. Ventilate the work area properly. 6. Provide periodic medical examinations for all workers who may be exposed to crystalline silica. 7. Post signs to warn workers about the hazard and to TO PREVENT ELECTRIC SHOCK AND inform them about required protective equipment.
  • Page 6: Setup - B Efore Use

    1. Chuck 2. Work Light SPECIFICATIONS 3. Direction Switch 4. Trigger 5. Battery Pack (sold separately) Hercules 12V Li-Ion Battery Type (sold separately) No Load Speed 0  –   2 500 RPM Charging Battery Pack Chuck Size 1/4"...
  • Page 7: Operation

    2. To remove, pull Collar forward, remove bit OPERATION from Chuck and then release Collar. Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the Collar beginning of this manual including all text under subheadings therein before set up or use of this product. Tool Set Up Attaching Belt Clip TO PREVENT SERIOUS INJURY FROM...
  • Page 8: Workpiece And Work Area Set Up

    3. Install bit and select direction of rotation. Workpiece and Work Area Set Up NOTICE: Do not change direction of rotation 1. Designate a work area that is clean and well lit. while Chuck is rotating. Wait until Chuck has come The work area must not allow access by children to a complete stop before changing direction.
  • Page 9: Maintenance And Servicing

    2. AFTER USE, wipe external surfaces of MAINTENANCE AND SERVICING the Tool and Charger with clean cloth. 3. Li-ion BATTERY MUST BE RECYCLED OR Procedures not specifically explained DISPOSED OF PROPERLY. in this manual must be performed Do not short, incinerate or open battery. only by a qualified technician.
  • Page 10: Troubleshooting

    Troubleshooting Problem Possible Causes Likely Solutions Tool will not start. 1. Battery Pack not properly 1. Remove Battery Pack, make sure there are no connected. obstructions, clean battery contacts on tool, reinsert the Battery Pack according to its shape (it should only fit one way), and press firmly until the Battery Pack locks in place.
  • Page 11: Limited 90-Day Warranty

    LIMITED 90 DAY WARRANTY Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of 90 days from the date of purchase.
  • Page 12 Visit our website at: http://www.harborfreight.com Email our technical support at: productsupport@harborfreight.com For technical questions, please call 1-888-866-5797 © ® Copyright 2019 by Harbor Freight Tools . All rights reserved. No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools.

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