8
(B)
(E)
(D)
(C)
Cotton thread #50
MECHANICAL ADJUSTMENT
BOBBIN TENSION
TO CHECK:
Set the bobbin in the bobbin case and pass the thread (cotton #50) through the tension spring.
The bobbin thread tension should be 32 to 38 grams-force when pulling the thread in the direction of (B).
If the tension is out of the range, adjust it as follows:
ADJUSTMENT PROCEDURE:
1. Turn the adjusting screw (C) in the direction of (D) when the bobbin thread tension is too tight.
2. Turn the adjusting screw (C) in the direction of (E) when the bobbin thread tension is too loose.
Summary of Contents for 43
Page 1: ...SERVICE MANUAL PARTS LIST MODEL Magenta 43 First Edition 08 July 2020...
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