Singer 14U 34B - 6 How to Adjust Thread Tension

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.
Thread
Left Right Right
Left
^vtension
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 Left looper
thread tension thread tension
dial (green) dial (yellow)
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
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
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.
When right needle thread tension is too loose.
Turn left needle thread tension dial (blue)
toward the (+) mark.
Turn right needle thread tension dial (green)
toward the (+) mark.
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