SINGER W1710 - Manual (Page 49)

31. CLEANING SHUTTLE CASE
Thread stuck between shuttle and shuttle case
causes sudden rapid running or sudden stop
machine.
In this case you should proceed as follows:
© Lift presser foot and remove bobbin case.
© Push latches® towards outside and remove
shuttle cover and shuttle with finger.
( 3 ) Clean shuttle and shuttle case and assemble
them in its place.
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