Hema SM-6000HU Mode D'emploi page 8

Trouble shooting
Problem Cause
Upper
• The machine is not
thread
threaded correctly.
breaks • The thread tension is
too tight
• The thread is too thick
for the needle.
• The needle is not
inserted correctly.
• The thread is round
wound the spool pin.
• The needle is dam-
aged.
Lower • The lower thread is not
thread
inserted correctly.
breaks.
• The upper thread ten-
sion is too loose.
Skipped
• The needlenis not
stitches
inserted correctly.
• The needle is dam-
aged.
• The wrong size needle
has been used.
• The foot is not at-
tached correctly.
Needle
• The needle is dam-
breaks
aged.
• The needle is not
inserted correctly.
• Wrong needle size for
the fabric.
Loose
• The machine is not
stitches
threated correctly.
• The bobbin case is not
correctly threated.
• Needle/fabric/thread
combination is wrong.
• Thread tension wrong.
Seams • The needle is too large
pucker-
for fabric.
ing
• The stitch length is
wrongly adjusted.
• The thread tension is
too tight.
8
All manuals and user guides at all-guides.com
Correction
• Rethread the machine.
• Reduce the thread tension (lower
number).
• Select a larger needle.
• Remove and reinsert the needle
(flat side towards the back).
• Remove the bobbin and rewind the
bobbin.
• Replace the needle.
• Check the threading carefully.
• Adjust the upper thread tension.
• Remove and reinsert needle (flat side
towards the back).
• Insert a new needle.
• Choose a needle to suit the the thread
and fabric.
• Check and attach correctly.
• Insert a new needle.
• Insert the needle correctly (flat side
towards the back).
• Choose a needle to suit the thread
and fabric.
• Check and attach correctly
• Check the threading.
• Thread the bobbin case as illustraded.
• The needle size must suit the fabric
and thread.
• Correct the thread tension.
• Select a finer needle.
• Readjust the stitch length.
• Loosen the thread tension.