If your serger seams don't look right then this video will show you some common causes and the fixes.
Subjects covered are tension, threading and foreign matter in your tensioners.
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Index:
0:00 Introduction
1:00 - Tip for changing thread colour
3:55 - Looper threading
11:00 - Trialling sewing after correctly threading the upper looper
12:00 - There's still a problem - removing foreign thread from lower looper tension disk
13:20 - Fine tuning looper tensions
14:25 - Adjusting the blade bight
18:33 - A common threading issue
21:00 - Conclusion and thanks
Web Site - http://www.institches.co.nz