SINGER 14U 34B/234B - Manual (Page 14)

6. How to adjust thread tension
Adjust thread tension to suit the type of material and size of the thread used. The thread tension dials on
this machine are a one-turn system and as the number on the thread tension dials increases, the thread
tension becomes tighter.
1) 2-needle, 4-thread overedge stitching.
• Correct thread tension
Be sure the threads are correctly threaded otherwise
proper thread tension cannot be obtained (See page 5).
Set each of the thread tension dials to the settings shown below
and test sew.
Right looper thread
Right
needle
thread
Topside
looper
thread
Left
threi
Underside
Thread Left Right Right Left
^Xtjnsion needle needle looper looper
Fabric
thread thread thread thread
Light
wieght
3 2 2,5 2
Medium
weight
4 3 2,5 2
Heavy
weight
6 5 3,5 2
Right needle
thread tension
dial (green)
Left looper
thread tension
dial (yellow)
Left needle
thread tension
dial (blue)
Right looper
thread tension
dial (orange)
With following figure as reference, adjust the thread tension dials to obtain correct tension.
When right looper thread lies on the underside
of fabric.
Right looper thread
Right needle
thread
Topside
Left looper
thread
Underside
Turn right looper dial (orange) toward the (+)
mark. Or, turn left looper dial (yellow) toward
the (-) mark.
When left looper thread appears on the top.
Right looper thread
Right needle
thread
Left needle
thread
looper
thread
Topside Underside
Turn left looper dial (yellow) toward the (+)
mark.
Or, turn right looper dial (orange) toward the
(—) mark.
When left needle thread tension is too loose.
Right looper
thread
When right needle thread tension is too loose.
Right looper thread
Right needle Left needle
thread thread
Topside
Lett looper
thread
Right needle
thread
Underside
Left looper
thread
Topside
Underside
Turn left needle thread tension dial (blue)
toward the (+) mark.
Turn right needle thread tension dial (green)
toward the (+) mark.
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