Brother International Entrepreneur PR-650 Users Manual - English - Page 249

Use the included cleaning brush to remove 3 any lint and dust from the moving knife, the fixed knife, the thread retaining plate, and their surrounding areas. Cleaning the bobbin case Thread wax and dust easily collect around the hole in the tension-adjusting spring on the bobbin case, resulting in an incorrect thread tension. Therefore, it should be cleaned each time when the bobbin is changed. Use a piece of paper with the thickness of a business card. Open the hook cover, remove the bobbin 1 case, and then remove the bobbin. (Refer to page 36.) 1 Remove all lint in this area After cleaning is finished, attach the needle 4 plate in the opposite way that it was removed in step 2. Slide the paper under the tension-adjusting 2 spring to remove any dust. Use a corner of the paper to remove any dust from around the hole. 1 Needle plate 7 1 Tension-adjusting spring 2 Hole 3 Paper Maintenance 247