Brother International Entrepreneur PR-650 Users Manual - English - Page 250
Cleaning the thread paths, of the upper threads
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APPENDIX Note ● Do not bend the tension-adjusting spring. In addition, do not use anything other than thick paper or paper of the specified thickness to clean the bobbin case. Use the included cleaning brush to remove 3 any lint and dust from inside the bobbin case. Cleaning the thread paths of the upper threads If dust or lint has accumulated in the thread guides or tension unit in the paths of the upper threads, the thread may break while embroidery is being sewn. Periodically clean the thread paths. ■ Cleaning the thread guides Use the included cleaning brush to remove 1 any lint and dust from below the thread guide plates. Clean the thread guide plates for both the upper thread guides and the middle thread guides. After cleaning is finished, insert the bobbin 4 into the bobbin case and the bobbin case into the hook, and then close the hook cover. (Refer to page 36, 37.) 1 Upper thread guide 2 Middle thread guide 1 Thread guide plate 248