SINGER 57815 - Manual (Page 76)

S I N G E R
Performance checklist
When sewing difficulties occur, look back through this
manual to make sure you are correctly following the
instructions.
If you still have a problem, the
reminders below may help you to correct it.
Needle does not move
Is machine connected to electrical supply?
Is the power and light switch on?
Is controller connected?
Is the handwheel engaged for bobbin winding?
Needle moves but stitch is not formed
Is needle defective?
Is needle fully inserted into needle clamp?
Are bobbin and needle correctly threaded?
Is bobbin correctly inserted into bobbin case?
Needle breaks
Is needle straight and sharp?
Is needle correct size?
Is needle fully inserted into needle clamp?
Are controls properly set?
Are accessories correct for application?
Bobbin winding difficulties
Is thread unwinding freely from spool?
Is bobbin winder engaged?
Is thread end securely held at start of wind?
Is thread hanging up on the slit on the thread spool?
Upper thread breaks
Is machine properly threaded?
Is thread freely unwinding from spool?
Is proper spool cap being used?
Is needle correct size for thread?
Is upper thread tension too tight?
Is bobbin case properly inserted?
Is bobbin rim free os nicks?
Lower thread breaks
Is bobbin correctly wound?
Is bobbin correctly inserted into bobbin case?
Is bobbin case correctly threaded?
Is thread hanging up on the slit on the thread
spool?
Skipped stitches
Is machine properly threaded?
Is fabric firmly held down?
Is needle correct style and size?
Is needle straight and sharp?
Fabric does not move properly under
presser foot
Is presser foot correctly attached to machine?
Is presser foot lowered?
Is stitch length correctly set?