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40-6674 Self-Leveling 3x360° Laser 

Operator’s Manual

Download this manual at  

www.johnsonlevel.com/manuals 

40-6674 

Thank you for purchasing this Johnson  

self-leveling 3x360° laser featuring GreenBrite® 

technology. This laser includes three 360° planes of 

laser light for total jobsite coverage. 

This tool comes with a Li-Ion battery and charger, or 

the option to use 4 AA Alkaline batteries. 

To use the Li-Ion battery: 

Make sure the battery is 

charged (see CHARGING THE LI-ION BATTERY). Lift 

the latch on the battery door (1) and insert the battery 

pack (2). Press the battery door closed until the latch 

engages.

To use 4 x AA Alkaline batteries: 

Insert the batteries 

into the battery holder according to the indicated 

polarity, lift the latch on the battery door and insert 

the battery holder into the laser. Press the battery 

door closed until the latch engages. 

To charge the Li-Ion battery, remove it from the 

tool by lifting the battery door latch and sliding out 

the battery (reverse the steps above in INSERTING 

BATTERIES). 
Plug the charger into the battery and into 120V power 

until the light on the charger turns green (about 

4-6 hours). While the battery is charging, the laser 

can be operated using the included alkaline battery 

compartment. 

 ATTENTION:

• Read all instructions before operating this tool. 

• Do not remove any labels from the tool.

• Do not project the laser into the eyes of others.

• Do not set up the laser tool at eye level or 

operate the tool near reflective surfaces, as the 

beam can be projected into your eyes or the 

eyes of others.

• Do not place the laser tool in a manner that may 

cause someone to unintentionally look into the 

laser beam. Serious eye injury may result. 

• Do not operate the tool in explosive 

environments, (i.e., in the presence of gases or 

flammable liquids).

• Keep the laser tool out of the reach of children 

and other untrained persons. 

• Do not attempt to view the laser beam through 

optical tools such as telescopes. Serious eye 

injury may result.

SAFETY INFORMATION

SAFETY LABEL LOCATION

COMPONENT OVERVIEW

KEYPAD OPERATION

INSERTING BATTERIES

CHARGING THE LI-ION BATTERY

THIS TOOL EMITS LASER RADIATION. 

DO NOT STARE INTO BEAM. AVOID 

DIRECT EYE EXPOSURE. 

PENDULUM LOCK

BATTERY DOOR

1/4"-20 & 5/8"-11 
TRIPOD MOUNT

LASER APERTURES

• Always turn off the laser tool when not in use 

or when left unattended for any period of 

time.

• Disassembly or repair by unqualified persons 

will void the warranty. 

Enables/disables the laser. 

Press to cycle through 

horizontal only, vertical 

only, both vertical beams 

and all three beams. 
Enables/disables PULSE 

and MANUAL modes.

1

2

KEYPAD

This Class II laser tool complies with CRF 

21 parts 1040.10 and 1040.11 as well as 

international safety rule IEC 285.

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