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Performance checklist
Needle does notmove
Is machineconnectedtoelectricalsupply?
Is thepowerandlightswitchedon?
Is speedcontrolpedalconnected?
Is thebobbinwindingindentengaged?
Needle moves butstitch is notformed
Is needledefective?
Is needlefullyinsertedintoneedleclamp?
Arebobbinandneedlecorrectlythreaded?
Isbobbincorrectlyinsertedintobobbincase?
Needle breaks
Is needlecorrectsizeforfabric?
Is needlefullyinsertedintoneedleclamp?
Arecontrolsproperlyset?
Areaccessoriescorrectforsewing?
Bobbin winding difficulties
Is threadunwindingfreelyfromspool?
Isbobbinwindingindentengaged?
Is threadendsecurelyheldatstartofwinding?
Is t h r e a d h a n g i n g u p o n t h e s l i t o n t h e t h r e a d
spool?
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Upperthreadbreaks
Ismachine properly threaded?
Isthread freely unwinding from spool?
Isupperthreadtension tootight?
Isbobbin caseproperlyinserted?
Isbobbin rim freeofnicks?
Lowerthreadbreaks
Isbobbin correctly wound?
Isbobbin correctly insertedintobobbin case?
Skipped stitches
Ismachine properly threaded?
Isfabricfirmlyhelddown?
Isneedle correctstyleandsizeforfabric?
Isneedle straight?
Fabric does not move properly under
presserfoot.
Ispresser footcorrectly attachedto machine?
Ispresser footlowered?
Isstitchlengthcorrectlyset?
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