Singer 14U 34B Operator's Manual page 15

2) Standard 1-needle, 3-thread overedge stitching
This machine can do 1-needle, 3-thread overedge stitching by using only the left or right needle.
• 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.
• When using the left needle, be sure to remove the
right needle.
^^Thread tension
Left needle Right looper Left looper
Fabric ^
thread thread thread
Light weight 3
2,5
2
Medium weight
4
2,5 2
Heavy weight
6 3,5 2
Needle thread
tension dial
(blue)
Right looper
thread tension
dial (orange)
Left looper
thread tension
dial (yellow)
• When using the right needle, be sure to remove the
left needle.
"^^Thread tension Right needle Right looper Left looper
Fabric^^^^^
thread thread thread
Light weight
2
2,5
2
Medium weight
3
2,5 .
2
Heavy weight 5
3,5 2
\
Needle thread Right looper Left looper
tension dial , thread tension thread tension
(green) \ dial (orange) 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.
When left looper thread
appears on the top.
Left looper
thread
Right lodper
thread
Needle
thread
Topside
Underside
When needle thread tension is
too loose.
Turn right looper dial (orange)
toward the (+) mark.
Or, turn left looper dial
(yellow) toward the (—) mark.
Turn left looper dial (yellow)
toward the (+) mark.
Or, turn right looper dial
(orange) toward the (—) mark.
Turn needle thread tension
dial (green) toward the (+)
mark.
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