24
ADJUSTMENT OF THREAD TENSION RELEASING MECHANISM
When the presser foot lifter is raised, the tension disc supporter should move about 1.0 mm so
that the thread tension releasing mechanism works properly.
(1) Remove the top cover (unit).
(2) Lower the presser foot lifter, set the thread tension dial at “9” and then loosen the set screw.
(3) While pushing the thread tension releasing plate (2) in direction (A), bring the thread tension
releasing plate (1) into contact with the tension disc supporter. After that, tighten the set
screw.
(4) Set the thread tension dial at “9” and raise the presser foot lifter to check the thread tension
releasing mechanism.
(5) Set the thread tension dial at “0” lower the presser foot lifter and make sure that the tension
disc does not move when the thread tension releasing plate (2) is moved within the play of
the thread tension lever.
(6) Attach the top cover (unit).
To Next Page
Loading...
