Remove the setscrews (A), (B), (C), (D) and remove the rear cover. Remove the face cover, top cover and belt cover. Rear cover Cap Service Access (6) Rear cover To remove: 1. Remove the setscrews (A) to (E) and loosen the setscrew (F). Setscrew (A) Front cover Service Access (5) Front cover To remove: 1. Setscrew (B) Setscrew (C) Setscrew (E) Setscrew (D) 7 Setscrew (A) Setscrew (F) Base Service Access (4) Base To remove: 1. Remove the setscrews (A), (B) and remove the belt cover. Remove the face cover and top cover (see pages 4 and 5). Setscrew (A) Cap Setscrew (B) Belt cover Service Access (3) Belt cover To remove: 1. Remove the 2 setscrews (A) and remove the handle and top cover. Setscrew (A) (2 pcs) Handle Top cover Service Access (2) To remove: 1. Lift up the top cover and unfasten the tab of the top cover from the face cover. Eliminate the looseness.įace cover Setscrew (A) Cap Setscrew (C) Setscrew (B) Service access (1) Face cover To remove: 1. Backlash between shuttle See mechanical adjustment p.18 operation hook gear and lower shaft “backlash (lower shaft gear)”. Upper threa.Ĭondition Cause How to fix Reference 6. Initial sewing speed is too Start with medium speed. Needle is not inserted Insert the needle properly. What to Do When Condition Cause How to fix Reference 1.
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