Adjusting The Thread Tension; Troubleshooting - Euro-Pro Dressmaker.PLUS 970C Owner's Manual

11. Adjusting the thread tension

Test the stitch tension on a scrap piece of the
same fabric you are going to use. When the
thread tension is properly adjusted, the upper and
lower threads tension is equal and strong enough
to lock both threads in the center of the material.
If the upper tension is too tight, the upper thread
lies straight along the surface of the fabric. Adjust
the tension by turning the tension dial counter
clockwise. (Fig. 1)
If the upper tension is too loose, the bottom thread
lies straight along the bottom of the fabric. Adjust
by turning the tension dial clockwise. (Fig. 2)
Please note:
The bobbin thread tension has been adjusted at
the factory and does not need readjustment. If the
upper tension adjustment does not correct the
problem, then remove the bobbin and reinsert it
making sure that the magnetism of the bobbin
case is activated.
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12. Troubleshooting

Problem
No power supply or
machine runs slowly
Fig. 1
Skipping stitches
Bobbin thread can
not be drawn up
Fig. 2
Breaking thread
Stitches too loose or
uneven
Breaking needle
Probable Cause
Batteries installed Reinsert using the
incorrectly. diagram provided inside
the battery compartment.
Battery power low. Replace batteries with
new ones.
Used and new battery are Replace batteries with
used together. new ones.
AC/DC adapter is not Make sure that the AC/DC
connected to the right adapter is connected to
position. the proper position on the
machine.
Needle is not properly Remove and reinsert the
inserted. needle.
Needle is bent. Replace with a new
needle.
Presser foot is too loose. Tighten the presser foot.
No more thread in lower Replace with a new lower
bobbin. bobbin.
Needle threaded Rethread the needle
incorrectly. making sure the thread
goes from left to right.
Upper thread is jamming Rethread the upper and
under the presser foot. lower thread again.
Needle is blunt. Replace with a new
needle.
Needle not inserted Reinsert the needle
corrected. making sure to push it up
as high as it can go.
Upper thread too tight or Adjust the thread tension
lower thread too loose. dial.
Needle bent or deformed. Replace with a new
needle.
Presser foot too loose. Replace with w new
needle and tighten the
presser foot.
Pulled the fabric when Do not pull the fabric. Let
sewing. the machine feed by itself.
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Solution