The document provides instructions for creating a fishbone diagram to analyze the causes of an effect. It explains that a fishbone diagram categorizes multiple potential causes for an effect. The steps are to: 1) draw the backbone and category labels, 2) add the category bones and labels, 3) record the effect in the head, and 4) record potential causes in the bones under relevant categories. An example analyzes causes for a machine jamming under categories like man, machine, method, material, and environment.

1. The Fishbone:
A How To
Factory Edition

2. Created by Tom Curtis 2011
Blog: www.onimproving.blogspot.com
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Email: ideamerchants@gmail.com
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3. Introduction
A fishbone diagram helps us look at Causes and
Effect. For an effect, we look at multiple causes
and place them in categories. This helps us
think through what might be driving the effect
before we start fixing. It is a good step to help us
on the path to identifying root cause and then
design corrective actions. What follows is how to
set up a fishbone in steps and an example. The
fishbone can become a great aid in helping think
through problems. Give it a try. --Tom Curtis

4. Steps 1-3
Prepare the Fishbone

5. Add the Red
Elements
1 Draw the Lines

6. Causes
2 Add Labels
Effect

7. Causes
3 Add Bone Labels
Man Machine Method
Effect
Measure Mother Nature Material

8. Steps 4-5
Use the Fishbone

9. Causes
Man Machine Method
Effect
Issue
4 Record Effect
Measure Mother Nature Material

10. Causes
Man Machine Method 5 Record Causes by
Cause Cause Cause Category
Cause
Cause Cause
Cause
Cause Cause Effect
Cause
Issue
Cause
Cause
Cause Cause
Measure Mother Nature Material

11. An Example:
Using the Fishbone

12. Notes:
Causes -Causes may fit in more than one category
-Causes can be further explored with 5 whys
-Not all categories may apply
Man Machine Method
Poor Poor Set up No Recent PM
Set up
Jam Poor Clearing
Clearing No Clearing Standard
training No Recent PM
Effect
No Recent PM
Jam
Machine Jams
Definition Non conforming
Material over 2 years old
Measure Mother Nature Material