Performance checklist, Needib does not move, Needle moves but stitch is not formed – SINGER 7050 User Manual
Page 47: Needle breaks, Bobbin winding difficulties, Upper thread breaks, Lower thread breaks, Skipped stitches, Fabric does not move properly under presser foot
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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.
NeediB Does Not Move
Is machine connected to electrical supply?
Is the power and light switch on?
Is controller connected?
Is air supply from controller clear?
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?
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 of nicks?
Lower Thread Breaks
Is bobbin correctly wound?
Is bobbin correctly inserted into bobbin
case?
Is bobbin case correctly threaded?
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 lertgth correctly set?
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