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I 6 Maintenance
Maintenance
Mantenimiento
Performance checklist
Thread balls up on Lift presser foot and re-thread the
the underside of machine, holding thread firmly.
the fabric Lower presser foot prior to sewing
Needle does
not move
Needle moves
but stitch is not
formed
Needle breaks
Bobbin winding
difficulties
Lower thread
breaks
Upper thread
breaks
Skipped stitches
Fabric does not
move properly
I under presser foot
Is machine connected to electrical supply?
Is the power and tight switched on?
Is speed control pedal connected?
Is the bobbin winder spindle pushed to the right?
Is needle bent?
Is Stitch Selector fully engaged?
Is needle fully inserted into needle clamp?
Are bobbin and needle correctly threaded?
Is needle correct size for fabric?
Is needle fully inserted into needle clamp?
Are controls properly set?
Are accessories correct for sewing?
Is thread unwinding freely from spool?
Is bobbin winder disc at the correct height?
Is thread hanging up on the slit on the thread spool?
Is the bobbin winder spindle pushed to the right?
Is thread end securely held at start of winding?
Is bobbin correctly wound?
Is bobbin correctly inserted into bobbin case?
Is machine property threaded?
Is thread freely unwinding from spool?
Is upper thread tension too tight?
Is bobbin case properly inserted?
Is bobbin rim free of nicks?
Is machine property threaded?
Is fabric firmly held down?
Is needle correct style and size for fabric?
Is needle straight?
Is presser foot correctly attached to machine?
Is presser foot lowered?
Is stitch length correctly set?
Is the drop feed lever set on the right?
66L .......... _ ..................