Seiko TH-2B - Needle Threading Sequence

6 Needle threading
Pass the thread in the order numerically instructed
in the figures.
Spool pin—^(2) Thread guide of thread tension
(3) Clearance between two tension discs ^(4) Thread
guide of thread tension ^(5) Thread controller discs
® single turn >-(6) Thread guide 5^
Tension spring ^(q) Thread take up levIT^^
-I el
^7^ Tension sprffig_~^'(g)
(9) Thread guide on face plate
(11) Needle
-^(10) Needle clamp
Tension of bobbin thread and needle thread
Balanced tension
(A) When stitch tension is well balanced, the bobbin thread
IS enpged with the needle thread at the center of given
material thickness, as shown by fig. (A)
(B) Tight needle of loose
bobbin thread tension
(B) Pig. (B) shows unbalanced tension, tight needle thread or
loose bobbin thread.
(C) Loose needle or tight
bobbin thread tension
- 5 _
From the library of: Superior Sewing Machine & Supply LLC