TROUBLE SHOOTING: CAUSES AND REMEDIES
THREAD FORMS LOOPS
CAUSE | REMEDY |
Thread tension not properly regulated
Needle thread properly threaded and/or bobbin thread not properly wound
Thread size not suited to fabric
Thread check spring not working properly
Read instructions for regulating
See Size of needle and thread
Have spring replaced
| SHRINKING OR PUCKERING OF THE SEAM |
Tension too tight | Read instructions for regulating |
Sewing foot pressure too strong | Read instructions for regulating sewing foot pressure |
| IRREGULAR STITCHES |
Needle and bobbin threads of poor quality | Use top quality threads |
Bobbin thread unevenly wound |
MACHINE DOES NOT RUN FREELY AND MAKES A NOLSE
Machine needs oiling Dust and thread in shuttle
Wrong oil used, has now clogged machine Drive belt tension too tight
Read instructions on how to oil
Read instructions on how to clean shuttle race Clean machine carefully and
TROUBLE SHOOTING: CAUSES AND REMEDIES
| NEEDLE THREAD BREAKS | |
CAUSE |
| REMEDY |
Needle not properly threaded |
| Thread properly |
Thread tension too tight |
| loosen tension |
Something wrong with the needle |
| Replace needle |
Thread is too heavy for needle |
| Change |
Thread check spring is broken |
| Have a new spring fitted |
Needle not properly inserted |
| Insert needle properly |
Needle plate, shuttle or sewing foot damaged |
| Replace |
| BOBBIN THREAD BREAKS | |
Bobbin thread entangled because of incorrectly wound bobbin Bobbin thread not under tension spring on bobbin case
Wind bobbin correctly Thread bobbin correctly
Needle not properly fitted on needle bar Needle bent or blunt
Needle worn
STITCHES ARE LEFT OUT
Fit needle properly
Replace
Replace
Needle bent
Needle not properly fitted Fabric too heavy or too hard You are pulling on the fabric
NEEDLE BREAKS
Replace
Fit needle properly
Use needle of correct size
Do not pull
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