Kenmore 16677 Service Manual - Page 21

TO ADJUST THE POSITION OF THE UPPER LOOPER CORRECT SETTING: WHEN THE UPPER LOOPER IS ATTHE LEFTMOST POSITION, THE DISTANCE BETWEEN THE CENTER OF NEEDLE ON THE RIGHT AND THE CENTER OF LOOPER EYE SHOULD BE 4.8 TO 5.2 MM. TO ADJUST: 1. REMOVE THE MACHINE BASE. 2. LOOSEN THE HEXAGONAL SOCKET SCREWS (A), AND ADJUST THE DISTANCE BETWEEN UPPER LOOPER SHAFT GUIDE AND BOTTOM OF UPPER LOOPER. THE DISTANCE SHOULD BE 1.6T0 1.8 MM WHEN THE UPPER LOOPER IS ATTHE LOWEST POSITION AS SHOWN IN FIG. 1. 3. TIGHTEN THE HEXAGONAL SOCKET SCREWS (A). 4. TURN THE HANDWHEEL AND BRING THE UPPER LOOPER TO THE LEFTMOST POSITION. 5. LOOSEN THE HEXAGONAL SOCKET SCREW (B), AND ADJUSTTHE DISTANCE BETWEEN THE CENTER OF NEEDLE AND CENTER OF UPPER LOOPER EYE AS SHOWN IN FIG. 2 AND FIG. 3. 6. TIGHTEN THE HEXAGONAL SOCKET SCREW (B). 7. CHECK THE UPPER AND LOWER LOOPER TIMING AND THE CLEARANCE BETWEEN UPPER AND LOWER LOOPERS. 1.6 TO 1.7 MM RIGHT jjNEEDLE ON THE 5 MM .UPPER LOOPER UPPER LOOPER SHAFT GUIDEI UPPER LOOPER SHAFT UPPER LOOPER (FIG. 2) 4.8 TO 5.2 MM HEXAGONAL SOCKET SCREW (B) HEXAGONAL SOCKET SCREWS_ (FIG. 1) 19 (FIG. 3)