SINGER 7021 Merritt - Manual (Page 82)

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?
Is there thread in the bobbin?
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 of nicks?
Lower Thread Breaks
Is bobbin correctly wound?
Is bobbin correctly inserted into bobbir
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?
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