Johnson 40-6641 Instruction Manual
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Johnson 40-6641 Instruction Manual

Self-leveling 3 dot laser
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2891i-4English_Manuals 6/4/18 10:27 AM Page 1
Self-Leveling 3 Dot Laser
Model Nos. 40-6641, 40-6643, 40-6646
Instruction Manual
Congratulations on your choice of this Self-Leveling 3 Dot Laser. We
suggest you read this instruction manual thoroughly before using the
instrument and save this instruction manual for future use.
This is a Class II laser tool and is manufactured to comply with CRF 21,
parts 1040.10 and 1040.11 as well as international safety rule IEC 285.
©2018 Johnson Level & Tool - Rev. 1
1

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Summary of Contents for Johnson 40-6641

  • Page 1 This is a Class II laser tool and is manufactured to comply with CRF 21, parts 1040.10 and 1040.11 as well as international safety rule IEC 285. ©2018 Johnson Level & Tool - Rev. 1...

  • Page 2: Table Of Contents

    Description for Model 40-6646 Qty. Self-Leveling 3 Dot Laser “AA” Alkaline Batteries Description for Model 40-6641 & 40-6643 Qty. Self-Leveling 3 Dot Laser Magnetic Bracket Tinted Glasses Magnetic Target “AA” Alkaline Batteries Hard-Shell Carrying Case ©2018 Johnson Level & Tool - Rev. 1...

  • Page 3: Features And Functions

    • Clearance for all common drywall track materials and 2x dimensional lumber. • Locking compensator helps protect the tool’s inner mechanisms. • Dust resistant construction. • Tripod thread for convenience. ©2018 Johnson Level & Tool - Rev. 1...

  • Page 4: Safety Instructions

    Wavelength 520nm THIS TOOL EMITS LASER RADIATION. Class II laser product This device complies with 21 CFR chapter 1, DO NOT STARE INTO BEAM. Subchapter J, CFR1040.10 and 1040.11 AVOID DIRECT EYE EXPOSURE. ©2018 Johnson Level & Tool - Rev. 1...
  • Page 5 • Use only original Johnson ® parts and accessories purchased from your Johnson ® authorized dealer. Use of non-Johnson ® parts and accessories will void warranty. ©2018 Johnson Level & Tool - Rev. 1...

  • Page 6: Location/Content

    INTO THE BEAM OR VIEW DIRECTLY 40-6641 WITH OPTICAL INSTRUMENTS Maximum Power < 1mW Wavelength 520nm Class II laser product This device complies with 21 CFR chapter 1, Subchapter J, CFR1040.10 and 1040.11 ©2018 Johnson Level & Tool - Rev. 1...

  • Page 7: Location Of Parts/Components

    2891i-4English_Manuals 6/4/18 10:27 AM Page 7 5. Location of Parts/Components Status Light Battery Cover Release Laser Output Windows Locking Compensator/ Power Switch 1/4″-20 Tripod Thread (underneath, not shown) ©2018 Johnson Level & Tool - Rev. 1...

  • Page 8: Operating Instructions

    • Use only alkaline batteries. • Remove the batteries when storing the instrument for an extended time (more than 3 months) to avoid damage to the tool should the batteries deteriorate. ©2018 Johnson Level & Tool - Rev. 1...
  • Page 9 Note Laser glasses enhance beam visibility but should never be used to stare into the beam or be used as safety glasses. Eye damage may result if these directions are not followed. ©2018 Johnson Level & Tool - Rev. 1...
  • Page 10 • Keep the laser unit dry and clean, especially the laser output window. Remove any moisture or dirt with a soft, dry cloth. • Do not use harsh chemicals, strong detergents or cleaning solvents to clean the unit. ©2018 Johnson Level & Tool - Rev. 1...

  • Page 11: Checking Accuracy

    • 3/64″ for a 10′ ceiling • 3/32″ for a 20′ ceiling, or reflected by a mirror from a 10′ ceiling. • 1/16″ for a 30′ ceiling, or reflected by a mirror from a 20′ ceiling. ©2018 Johnson Level & Tool - Rev. 1...
  • Page 12 1/4″ at 25′, your instrument is within tolerance. Note This accuracy checking method doubles the error. For example, if the difference between Point A and Point D is 1/4″ at 25′, your laser is accurate to 1/8″ at 25′. ©2018 Johnson Level & Tool - Rev. 1...

  • Page 13: Application Examples

    • Setting reference points for installation of wainscoting • Setting plumb references for installation of wallpaper • Setting a level reference for checking level or pitch of a poured concrete floor • Checking square of windows and doorways ©2018 Johnson Level & Tool - Rev. 1...

  • Page 14: Troubleshooting Guide

    Laser light is dim Batteries depleted Change the batteries Laser light is blinking Laser is out of self- Position laser within 5° leveling range of level so that it can self-level ©2018 Johnson Level & Tool - Rev. 1...

  • Page 15: Technical Specifications

    Dimensions 3.5″ x 4.5″ x 2.75″ Weight 0.60 lbs Tripod Thread 1/4″ – 20 IP Rating IP 50 * Battery life reported with all beams enabled, as tested with lithium AA/Alkaline AA. ©2018 Johnson Level & Tool - Rev. 1...

  • Page 16: Product Warranty

    2891i-4English_Manuals 6/4/18 10:28 AM Page 16 11. Product Warranty Johnson Level & Tool offers a two year limited warranty on each of its products. You can obtain a copy of the limited warranty for a Johnson Level & Tool product by contacting Johnson Level & Tool's Customer Service Department, as provided below, or by visiting our web site at www.johnsonlevel.com.

  • Page 17: Warranty Registration

    We will never sell your information and only send you marketing information if you opt-in. To register, go to www.johnsonlevel.com/register. ©2018 Johnson Level & Tool - Rev. 1...
  • Page 18 2891i-4English_Manuals 6/4/18 10:28 AM Page 18 ©2018 Johnson Level & Tool - Rev. 1...

This manual is also suitable for:

40-664340-6646

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