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)
Fig. 1
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.
11
12. Troubleshooting
Do not pull the fabric. Let
the machine feed by itself.
Pulled the fabric when
sewing.
Replace with w new
needle and tighten the
presser foot.
Presser foot too loose.
Replace with a new
needle.
Needle bent or deformed.
Breaking needle
Adjust the thread tension
dial.
Upper thread too tight or
lower thread too loose.
Stitches too loose or
uneven
Reinsert the needle
making sure to push it up
as high as it can go.
Needle not inserted
corrected.
Replace with a new
needle.
Needle is blunt.
Rethread the upper and
lower thread again.
Upper thread is jamming
under the presser foot.
Breaking thread
Rethread the needle
making sure the thread
goes from left to right.
Needle threaded
incorrectly.
Replace with a new lower
bobbin.
No more thread in lower
bobbin.
Bobbin thread can
not be drawn up
Tighten the presser foot.
Presser foot is too loose.
Replace with a new
needle.
Needle is bent.
Remove and reinsert the
needle.
Needle is not properly
inserted.
Skipping stitches
Make sure that the AC/DC
adapter is connected to
the proper position on the
machine.
AC/DC adapter is not
connected to the right
position.
Replace batteries with
new ones.
Used and new battery are
used together.
Replace batteries with
new ones.
Battery power low.
Reinsert using the
diagram provided inside
the battery compartment.
Batteries installed
incorrectly.
No power supply or
machine runs slowly
Solution
Probable Cause
Problem
12
