60
A
61
62
There are thread loops on the underside of
the material
A tangle on the bottom side of the application means
there is not enough upper tension� More than likely,
the thread is not being pulled snugly between the
tension disks (p� 33,
E
and
F
) on the Upper Tension
Assembly or is not between them at all�
1�
Lift the presser foot to push the two
upper tension disks apart�
2�
Firmly pull the thread against the
center shaft between the disks�
3�
Drop the presser foot� The disks should close
on the thread creating plenty of tension� Gently
pull on the thread to feel the tension�
4�
If this did not solve the problem, pull the cover
knob off the Upper Tension Assembly and turn
the knob found underneath to the point where
its outer surface has three threads of the tension
post showing� Then repeat steps 1-3�
Thread loops could also be caused by a burr on the retaining
ring cap spring (p� 40,
59
,
B
)� Remove any burrs by polishing
them with emery paper or a fine file. If badly damaged,
replace with a new retaining ring cap spring (#160311)�
Thread pulls out of the needle eye when
starting to sew
Confirm that the needle eye is threaded from left to right (p.
15,
O
)� Then pull out a longer thread tail and trap it with your
finger to the bed of the sewing machine (
A
)� Release the
thread tail after the first few stitches.
A rat’s nest forms in the first few inches of
sewing and then clears up
Eliminate this issue by trapping the thread tails (
A
) from the
needle and the bobbin as you start to sew�
When stopping to turn a corner,
the machine skips a stitch
At the corner, bury the needle to the bottom of
its travel and allow it to rise 1/8 inch� In this spot,
raise the presser foot and then pivot the work
on the needle to change sewing direction� Drop
the foot to continue sewing� Follow this process
to achieve the best quality corner stitch and
minimize the skipping of stitches at turns�
When removing fabric from under
the machine it pulls hard and three
strands of thread come up through
the throat plate
This usually happens when fabric is being
removed during the middle of a stitch cycle�
The hook under the machine still has a loop of
thread around it�
Before removing fabric from under the
machine, manually turn the machine forward
until the take-up arm (p� 15,
K
) reaches its
uppermost position, then starts to descend�
This allows the hook to release the thread
loop and proper upper tension to be applied to
finish the stitch.
41 |
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