22/06/2026
π FIND THE ROOT CAUSE. DRIVE THE RIGHT SOLUTION. π
The Ishikawa Diagram β also called the Fishbone Diagram β is a powerful Lean Six Sigma tool that helps teams explore all possible causes of a problem.
Why use it?
π Identifies true root cause, not symptoms
π€ Encourages team collaboration
π Organises causes into clear categories
π Supports data-driven decisions
β
Leads to lasting solutions
The 6M Categories:
π€ Man β Training, fatigue, procedures
βοΈ Machine β Calibration, wear, settings
π¦ Material β Quality, contamination, damage
π Method β Process, sequence, standards
π Measurement β Gauges, inspection, test methods
π Environment β Lighting, humidity, dust
Example β Paint defects on vehicle body:
πΉ Man β Inexperience, incorrect technique
πΉ Machine β Spray gun wear, improper pressure
πΉ Material β Low quality paint, wrong mix ratio
πΉ Method β Incorrect mixing process
πΉ Measurement β Uncalibrated gauges
πΉ Environment β Dust, humidity, poor ventilation
How to apply:
1οΈβ£ Define the problem
2οΈβ£ Draw the fishbone
3οΈβ£ Identify major categories
4οΈβ£ Brainstorm possible causes
5οΈβ£ Analyse and identify root causes
6οΈβ£ Take action and improve
Identify. Analyse. Improve. Solve the right problem the right way.
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