Jack T1310 - Thread Take-Up Spring; Arm Thread Guide

7. STANDARD ADJUSTMENTS
7-2. Thread take-up spring
Specificati ons Heavy -weight materia ls (- 01) I Medium-weight materi als ( -02)
Thread take-up spr ing height
(mm)
Thread take-up spring
tension
(N)
r
0
0
NOTE:
0.6 - 1.2
( 1 )
(2)
~Stron ger
Weaker
7 - 10
I
0.2 - 0.5
<Thread take-up spring height>
Loosen the set screw (1) and turn the adj us t er to adjust.
<Thread take-up spring tension>
Turn the tension stud (2) with a screwdriver to ad ju st t he
tension.
If t
he th read tension spring is not adjusted correct ly , the upper thr ead traili ng length will be uneven after thread tr imming.
7-3. Arm thread guide R
r l
More thread + + Less thread
~~
(
2
) / \_:: Ind~! mark
T he standard position of arm thread guide R (1) is when t he
screw (2) is aligned wi th the index mark.
Loosen the screw (2) and
move arm thread guide R (1) to
adjust.
• When sewing heavy
ma terial, move arm thread guide R
(1) to the left. (The thread take-up amount will become
grea
ter .)
• When sewing light material, move arm thread guide R
(1) to the right. (T he thread take-up amount will become
less.)
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From the library of Superior Sewing Machine & Supply LLC - www.supsew.com