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Problem Possible Cause Solution
TOP THREAD BREAKS Machine is threaded incorrectly . . . . . Rethread machine and needle
Tension is too tight . . . . . . . . . . . . . . . Reduce tension on top to a smaller number
Thread is too heavy for needle size . . . Use
a larger needle
Needle is inserted incorrectly
. . . . . . . Reinsert needle with flat side toward back
Needle is damaged . . . . . . . . . . . . . . . Insert new needle
T
hread is caught on spool pin . . . . . . . Remove spool, unwind excess thread, clip, turn spool
over, and use felt disc on spool pin
LOWER THREAD BREAKS Bobbin case is not inserted correctly . . Reposition bobbin. If thread pulls smoothly, it is correct
Bobbin case is improperly threaded . . . . Refer to instructions for correct threading
Bobbin tension is too tight. . . . . . . . . . Change bobbin tension according to instructions
SKIPPED STITCHES Needle is not inserted correctly. . . . . . Reinsert needle with flat side toward back
Needle is damaged . . . . . . . . . . . . . . . Insert new needle
Wrong type of needle is used . . . . . . . Match needle size to fabric and thread weight
Wrong presser foot is used . . . . . . . . . Check the proper presser foot needed for specific task
Foot pressure is wrong. . . . . . . . . . . . . Check foot pressure regulation for proper setting
NEEDLE BREAKS
Needle is damaged . . . . . . . . . . . . . . . Insert new needle
Needle is not inserted correctly. . . . . . Reinsert needle with flat side toward back
Fabric is too heavy/wrong needle size
. . Match needle size to fabric and thread weight
F
abric is being pulled during sewing . . Chec
k for proper foot pressure; make sure feed teeth
are raised and operating correctly; lengthen stitch
length. Fabric should feed automatically. Pulling the
fabric will thro
w the machine out of time.
STITCHING FORMS LOOPS Needle is not threaded correctly . . . . . Thread needle from front to back
Bobbin is not threaded correctly . . . . . Check instructions for proper bobbin threading
Improper needle and/or thread used . . Match needle size to fabric and thread weight
SEAMS SHRINK OR PUCKER Presser foot pressure is too heavy . . . . Reduce presser foot pressure to a lower number
THREAD BUNCHING OR Top tension is too loose. . . . . . . . . . . . Increase top tension to a higher number. Normal
“NESTING” ON UNDERSIDE settings are between 3-5.
OF FABRIC Machine is not threaded correctly . . . . Rethread machine making sure presser foot is raised
and the take-up lever eye is threaded. Raising the
presser foot will help seat the thread between the
tension discs.
Bobbin case is improperly threaded. . . . Refer to instructions for correct threading
Thread is of poor quality . . . . . . . . . . . Use quality thread
Needle is too large for fabric . . . . . . . . Use a smaller size needle
Wrong stitch length is used . . . . . . . . . Adjust length for proper stitches
Top and bottom threads are not. . . . . . Draw both threads back under the presser foot and
drawn back under the presser hold until a few stitches have formed
foot before sewing
TROUBLESHOOTING GUIDE