5) correct thread tensions for 3-thread flatlock – SINGER 14U52 User Manual
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(5) Correct thread tensions for 3-thread flatlock.
Be sure the threads are correctly threaded otherwise
proper tension cannot be obtained.
Set each tension dial to settings shown below and test sew on a sample of your fabric.
• When using right needle for sewing normal width overedge seams, be sure to remove left needle.
Fabric
Tension Dial
Blue
Green Orange Yellow
Light weight
0.5
5.0
8.0
Medium weight
0.5
5.0
8.5
Heavy weight
1.0
6.0
9.0
When using left needle for sewing wide
overedge seams, bu sure to remove right
needle.
Fabric
Tension Dial
Blue
Green Orange Y ellow
Light weight
0.5
3.0
8.0
Medium weight
0.5
3.5
8.0
Heavy weight
0.5
3.0
8.0
Adjust thread tensions to suit your fabric making reference to table below. Make adjustments in
increments of no greater than half a number at a time.
When left looper thread is too
loose.
Right looper
thread
Topside
Needle
thread
\
Left looper
thread
Turn left looper thread ten
sion dial (yellow) toward the
(+) mark.
Or, needle thread tension dial
(blue or green) toward the (—)
mark.
When right looper thread is
too loose.
Right looper
thread
Topside
Needle
thread
Left looper
thread
Underside
Turn right looper thread ten
sion dial (orange) toward the
(+) mark.
Or, turn needle thread tension
dial (blue or green) toward the
(—) mark.
When needle thread is too ^
loose.
Topside
Right looper
thread
Needle
thread
\
Left looper
thread
. Underside
Turn needle thread tension
dial (blue or green) toward the
(-f-) mark.
Or, turn right looper thread
tension dial (orange) toward
the (—) mark.
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