JUKI AMS-221EN Series Engineer's Manual page 156

2. Color chart indicating thread tension values
An indicated needle positioning drawing varies with thread tensions adjusted for needle entry positions. The follow-
ing chart shows the colors of lines for thread tensions.
Thread tension
0 to 20
21 to 40
41 to 60
61 to 80
81 to 100
101 to 120
121 to 140
141 to 160
161 to 180
181 to 200
Color
: Gray
: Purple
: Blue
: Light blue
: Green
: Yellowish green
: Orange
: Red
: Pink
: Black
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