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For technical questions, please call 1-888-866-5797.

Item 64755 

        

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Electrical Safety

Do not expose power tools to rain or wet conditions.

   

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Personal Safety

1. 

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.

  

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2. 

Use personal protective equipment.  

Always wear eye protection.

  Protective 

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3. 

Prevent unintentional starting. 

Ensure the Trigger is in the off-position before 

connecting to power source, picking up or 

carrying the tool.

   

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have the Trigger on invites accidents.

4. 

Remove any adjusting key or wrench 

before turning the power tool on.

  

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5. 

Do not overreach.  Keep proper footing and 

balance at all times.

  This enables better control 

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6. 

Dress properly.  Do not wear loose clothing or 

jewelry.  Keep your hair, clothing and gloves 

away from moving parts.

  Loose clothes, jewelry 

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7. 

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.

8. 

Only use safety equipment that has been 

approved by an appropriate standards agency.

  

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Power Tool Use and Care

1. 

Do not force the power tool.  Use the 

correct power tool for your application.

  

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safer at the rate for which it was designed.

2. 

Do not use the power tool if the Trigger  

does not turn it on and off.

  

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3. 

Disconnect the battery pack from the 

power tool before making any adjustments, 

changing accessories, or storing power 

tools.

  

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4. 

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.

5. 

Maintain power tools.  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 

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6. 

Keep cutting tools sharp and clean.

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are less likely to bind and are easier to control.

7. 

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 

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intended could result in a hazardous situation.

Summary of Contents for 1781C-B1

Page 1: ...rence 21h 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 Copyright 2021 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 Diagrams within this manua...

Page 2: ... which if not avoided could result in minor or moderate injury Addresses practices not related to personal injury IMPORTANT SAFETY INFORMATION General Power Tool Safety Warnings Read all safety warnings and all instructions Failure to follow the warnings and instructions may result in electric shock fire and or serious injury Save all warnings and instructions for future reference 7KH WHUP ƎSRZHU ...

Page 3: ...and properly used Use of dust collection can reduce dust related hazards 8 Only use safety equipment that has been approved by an appropriate standards agency 8QDSSURYHG VDIHW HTXLSPHQW PD QRW SURYLGH DGHTXDWH SURWHFWLRQ H SURWHFWLRQ PXVW EH 16 DSSURYHG DQG EUHDWKLQJ SURWHFWLRQ PXVW EH 1 26 DSSURYHG IRU WKH VSHFLILF KD DUGV LQ WKH ZRUN DUHD Power Tool Use and Care 1 Do not force the power tool Use...

Page 4: ...void unintentional starting Prepare to begin work before turning on the tool 4 Do not lay the tool down until it has come to a complete stop Moving parts can grab the surface and pull the tool out of your control 5 When using a handheld power tool maintain a firm grip on the tool with both hands to resist starting torque 6 Do not leave the tool unattended when the Battery Pack is connected Turn of...

Page 5: ...n extended period should first be examined by a doctor and then have regular medical check ups to ensure medical problems are not being caused or worsened from use Pregnant women or people who have impaired blood circulation to the hand past hand injuries nervous system disorders diabetes or Raynaud s Disease should not use this tool If you feel any symptoms related to vibration such as tingling n...

Page 6: ...Extension Cords Note Extension cords must not be used with this item s Charger Symbology Double Insulated V Volts Alternating Current A Amperes n0 xxxx min No Load Revolutions per Minute RPM WARNING marking concerning Risk of Eye Injury Wear ANSI approved safety goggles with side shields Read the manual before set up and or use WARNING marking concerning Risk of Hearing Loss Wear hearing protectio...

Page 7: ...e 1 4 Hex Setup Before Use Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product Note For additional information regarding the parts listed in the following pages refer to Parts List and Diagram on page 11 Functions Direction Switch Work Light Work Light Work Light Battery Trigger Chuck...

Page 8: ...ing Accessories CAUTION Only use 1 4 hex shank bits designed for impact use Verify bit fits the Chuck precisely before use 1 Pull Collar forward and insert an appropriate impact rated accessory into the hex drive Chuck Pull on bit to ensure it is secure 2 To remove pull Collar forward remove bit from Chuck and then release Collar Collar Attaching Belt Clip Attach Belt Clip to Handle using supplied...

Page 9: ...rotation NOTICE Do not change direction of rotation while Chuck is rotating Wait until Chuck has come to a complete stop before changing direction 5 Press Trigger to start the tool The Work Lights will turn on when Trigger is pressed and turn off a few seconds after Trigger is released 6 The tool has variable speed To increase speed apply more pressure to Trigger To decrease speed lessen pressure ...

Page 10: ...l noise or vibration occurs have the problem corrected before further use Cleaning Maintenance and Lubrication 1 BEFORE EACH USE inspect the general condition of the tool Check for leaking swollen or cracked battery pack loose hardware misalignment or binding of moving parts cracked or broken parts any other condition that may affect its safe operation 2 AFTER USE wipe external surfaces of the too...

Page 11: ...DERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY THE BUYER THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO Parts List and Diagram Part Description Qty 1 Screw 4 2 Spring Washer 4 3 Shield 1 4 Lampshade 1 5 Screw 3 6 LED Circuit Board 1 7 Bo...

Page 12: ...lusion or limitation of incidental or consequential damages so the above limitation of exclusion may not apply to you THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS To take advantage of this warranty the product or part must be returned to us with transportation charges prepaid Proof of purchase date and an expl...

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