SOLAC SW8231 Mode D'emploi page 13

TROUBLESHOOTING:
Problem
No power or the machine runs
slowly
Skipping stitches
Bobbin thread cannot be
drawn up
Thread keeps breaking
Stitches too loose or uneven
Needle breaks
Reason
Adapter power is not properly connect-
ed
Needle eye not in the middle
Needle bent
Presser foot too loose
Lower thread has been used up
Needle threaded incorrectly
Thread blocked by lower bobbin
Needle scarf too rough
Needle shank not seated in the upper
end
Thread tension dial, thread guide or
thread pulling bar is rough
Thread blocked by upper bobbin spool
Upper thread too loose or tight
Needle bent
Threading incorrect
Presser foot and/or needle is loose
Pull fabric with force when sewing
Needle not lowered into fabric when
start sewing
The needle is in the fabric when adjust
the pattern selection dial
Solution
Correct connect adaptor.
Replace with a new adaptor
Remove and re-insert the needle with the flat side of the needle to
the back.
Remove and re-insert a new needle.
Tighten the presser foot according to installation instruction above
mentioned.
Replace with new full bobbin
Re-thread the needle, making sure it is threaded from the front to
the back.
Correctly thread the upper thread and lower thread again according
to instruction above mentioned.
Remove and re-insert a new needle.
Insert the needle correctly
Polish with fine sand paper
Pull out the spool pin and make the bobbin or thread run smoothly
Adjust thread tension dial and make the stitches sew evenly
Remove and re-insert a new needle
Check and thread again
Remove and re-insert a new needle, and tightly fix presser foot and
needle
Remove and re-insert a new needle and tightly fix it. After that
thread machine, again.
Remove and re-insert a new needle and tightly fix it, thread again,
turn the hand wheel to lower the needle into fabric, and then start
sewing
Remove and re-insert a new needle and tightly fix it