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67
Entretien
16
Liste De Performances
Le fil s'emmêle
sous le tissu
L'aiguille ne bouge
pas
L'aiguille bouge
mais le point ne se
forme pas
L'aiguille casse
Difficultés pour
remplir la canette
Le fil de canette
casse
Le fil d'aiguille
casse
La machine saute
des points
Le tissu n'est pas
entraîné
correctement sous
le pied presseur
Relevez le pied presseur et enfilez la machine à nouveau en
tenant fermement le fil. Avant d’enfiler l’aiguille, abaissez le
pied presseur,et tirer sur le fil. Si la machine est bien enfilée le
fil devrait ressentir une certaine tension.
La machine est-elle connectée à la prise électrique ?
La machine et la lampe sont-elles allumées ?
Le rhéostat est-il connecté à la machine ?
La tige du dévidoir de canette est-elle déplacée vers la droite ?
L'aiguille est-elle tordue ?
L'aiguille est-elle insérée complètement dans le pince-aiguille?
Les fils de la bobine et de la canette sont-ils correctement
enfilés ?
La grosseur de l'aiguille est-elle adaptée au tissu ?
L'aiguille est-elle insérée complètement dans le pince-aiguille ?
Les réglages sont-ils corrects ?
Les accessoires en place conviennent-ils à l'ouvrage ?
Le fil se dévide-t-il correctement de la bobine ?
Le fil est-il coincé dans la fente de la bobine ?
La tige du dévidoir de canette est-elle déplacée vers la droite ?
L'extrémité du fil est-elle retenue fermement au début du
bobinage ?
La canette est-elle bobinée correctement ?
La canette est-elle insérée correctement dans le boîtier de
canette ?
La machine est-elle enfilée correctement ?
Le fil se déroule-t-il correctement de la bobine ?
La tension du fil d'aiguille est-elle trop forte ?
Le boîtier de canette est-il correctement inséré ?
Le bord de la canette n'est-il pas ébréché ?
La machine est-elle enfilée correctement ?
Le tissu est-il fermement maintenu à plat ?
Le type d'aiguille et la grosseur de l'aiguille sont-ils adaptés au
tissu ?
L'aiguille est-elle droite ?
Le pied presseur est-il mis en place correctement ?
Le pied presseur est-il abaissé ?
La longueur de point est-elle réglée correctement ?
La manette des griffes d'entraînement est-elle positionnée sur
la droite ?
66
16
Maintenance
Mantenimiento
Needle does
not move
Needle moves
but stitch is not
formed
Needle breaks
Bobbin winding
difficulties
Upper thread
breaks
Lower thread
breaks
Skipped stitches
Fabric does not
move properly
under presser foot
Thread balls up on
the underside of
the fabric
Lift presser foot and re-thread the
machine, holding thread firmly.
Lower presser foot prior to sewing
Is machine connected to electrical supply?
Is the power and light 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 properly 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 properly 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?
Performance checklist
Maintenance
35


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