Bernina 330 Manual - Page 9

2 %CC:le t t, r II 8 () INSERTING BOBBIN AND CASE INTO MACHINE INSERTING BOBBIN INTO CASE Open hook cover as illustrated. (1) Insert fit led bobbin into case os decoded. (2) Molding the hinged latch (3) insert bobbin and case into the hook making sure the tinge' "A" is located inside the section 14) Leave about 10cm (4")ofthreadfrom the bobbin case andalways ensure that the needle's raised to its highest position when removing or inserting the bobbin. BOBBIN THREAD TENSION Measure the bobbin threod tension by suspending the wound bobbinin as case by the end of the thread.If the bobbin does not move when it is gently swung, the tension is tooTight, if it lolls to the ground or moves down too freely. It is too loose. Correct tension is obtained when it slips down a few Inches looprox. 10 cm). 15) Note:Itisnotnormally necessary toadjust bobbin thread tension. IIis usually only necessary to adjust the top thread tension when some altetation is desired. See pages 9/10.