Adjusting thread tension, Bobbin thread tension, 51=^ u – SINGER 214 User Manual
Page 15
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Adjusting thread tension
STRAIGHT STITCHINCi
Top
thread
Under
side
Bobbin thread
Weil balanced
Top stitch too tight
Top stitch too loose
The good looking apperance of your stitching rs largely
determined by the balanced tension of both top and
bobbin
threa6s.
The tension is well balanced when
these two threads lock' in the middle of layers of the
fabric you are sewing.
Decrease tension
Threads lock on
the top side.
Increase tension
Threads lock on
the under side.
^.... .
5
1=^
u.
Bobbin
thread
tension
S088IN
THREAD
TEMSION
REQUIRES
ADJUSTMENT
LESS
FREQUENTLY
THAN
THE TOP THREAD TENSION.
If the tension is well balanced, but the fabric
puckers badly, both top and bobbin thread
tensions may be too tight and have to be
adjusted.
When adjusting the tension on the bobbin
case, make slight adjustments with the screw
13
To test that the tension is correct suspend
the bobbin case by the
thread
{No. 50) and
jerk it once, if the tension is correct, the
thread
will unwind an Inch or two (3 to 5 cm).
If too loose it will
unwind
continuously. If too
tight the thread will not unwind at all.