Johnson 40-6647 - User Manual

©2018 Johnson Level & Tool - Rev. 1 1
Self-Leveling Cross and Line Laser
Model Nos. 40-6647, 40-6648, 40-6649
Instruction Manual
Congratulations on your choice of this Self-Leveling Cross and Line
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.
2891i-1English_Manuals 6/4/18 10:23 AM Page 1

Summary

Features and Functions

Safety Instructions

Location and Content of Warning Labels

Location of Parts and Components

Operating Instructions

Battery Installation

Steps to install AA batteries, including cover removal and reattachment for the laser tool.

Using the Product in Self-Leveling Mode

Guide for operating the laser in automatic self-leveling mode, covering crossline and plumb line projection.

Using the Product in Tilt (Manual Level) Mode

Instructions for manual operation, projecting laser beams at desired angles without self-leveling.

Tips from the Pros

Practical advice for enhancing beam visibility in bright conditions and safe use of laser glasses.

Care and Handling

Checking Accuracy

Plumb Accuracy Check

Procedure to verify the vertical accuracy of the laser beam using a doorway and precise measurements.

Horizontal Line Transverse Accuracy Check

Method to confirm horizontal line accuracy by projecting and measuring laser lines on a wall at different angles.

Horizontal Pitch Accuracy Check

Procedure to check horizontal beam pitch accuracy using reference points on walls or staffs.

Application Examples

Troubleshooting Guide

Technical Specifications

Product Warranty

Warranty Registration

Johnson 40-6647 Specifications

General

Type	Rotary Laser Level
Laser Wavelength	635nm
Accuracy	±1/8" @ 100ft
Self-Leveling Range	±5 degrees
Laser Type	Red Laser
Durability	IP54