Seiko TH-2B - Thread Tension Release Mechanism Timing

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Timing of thread tension releasing meohanism
(a) When moving the lifting lever(l), upper
thread should be adjusted so as to Sdo.
(b) Adjustment
Pull-up the presser "bar lifter(3), the
clearance should be made over 3mm between tip
of the tension releasing plate(4) and tension
disc(5) and tighten the screws(2) on the tension
releasing plate.
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ii
From the library of: Superior Sewing Machine & Supply LLC