Brother International Innov-ís 4000D Users Manual - English - Page 246
Cleaning the Bobbin Case
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D6_Bobbin_centerpin_brother.fm Page 2 Thursday, June 2, 2005 11:32 AM Cleaning the Bobbin Case Thread wax and dust easily collect around the notch in the tension spring on the bobbin case, resulting in an incorrect thread tension. Therefore, the bobbin case should be cleaned as necessary should tension problems arise. When cleaning the bobbin case, use card stock or another type of paper of similar thickness and sturdiness in order to prevent pieces of paper tearing off and getting lodged in the bobbin case. a Follow steps from bobbin case. "CARE AND MAINTENANCE" in the operation manual to remove the b Using a piece of paper of adequate thickness and sturdiness, slide the paper between the tension plate base and the tension spring and also slide the paper behind the notch of the spring to remove any dirt or dust. a d c a b d a Tension plate base b Notch c Paper (e.g. business card type) d Tension spring Memo Do not bend the tension spring. In addition, do not use anything other than recommended paper to clean the bobbin case. c Use the enclosed cleaning brush to remove any lint and dust from inside the bobbin case. d Replace the bobbin case and needle plate cover. XD0839-051