Troubleshooting
Problem Cause Solution Page
Fabric puckers
Upper thread tension is too high.
Reduce upper thread ten-
sion.
20
Threading is not correct.
Rethread the machine. 18
Needle is too thick for the fabric.
Choose the right needle
referring to the needle and
thread chart.
13
Stitches are too long for the fabric to be
sewn.
Reduce stitch length. 22
For very thin materials:
No non-woven lining has been applied.
Use non-woven lining.
Stitches form loops
Upper thread tension is too low.
Increase upper thread ten-
sion.
20
Needle and thread are not right for the fabric
to be sewn (too thick or too thin).
Use the correct needle and
thread size by referring to
the needle and thrad chart.
13
Fabric does
not feed
properly
Feed dog is blocked by lint and fluff. Clean the feed dog. 50
Feed dog is lowered. Raise the feed dog. 24
The stitches are too short.
Increase the stitch length. 22
Sewing machine
will not sew
Machine is not connected properly. Connect machine properly. 8
Thread has got entangled in the bobbin
case positioning finger.
Clean the bobbin case
and/or the hook.
49
Handwheel is set for winding bobbin.
Set handwheel to its original
position.
16
Sewing machine is
slow or noisy
Thread has got entangled in the bobbin
case positioning finger.
Clean the hook. 49
Feed dog is blocked by lint and fluff. Clean the feed dog. 50
Machine is not lubricated properly.
Oil the machine. 51
55
