Kenmore 16677 Service Manual - Page 23
To Adjust, The Timing, Of The, Upper And Lower Loopers
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Page 23 highlights
TO ADJUST THE TIMING OF THE UPPER AND LOWER LOOPERS CORRECT SETTING: WHEN THE LOWER LOOPER MOVES TO THE RIGHT, THE TIP OF UPPER LOOPER MEETS THE LOWER LOOPER WITHIN 0.2 TO 1.2 MM FROM THE LEFT OF LOWER LOOPER EYE AS SHOWN IN FIG. 1. TO ADJUST: 1. BEFORE PROCEEDING WITH THIS ADJUSTMENT, CHECKTHE LOWER LOOPER TIMING AND POSITION OF UPPER LOOPER. 2. REMOVE THE MACHINE BASE. 3. LOOSEN TWO SETSCREWS, AND ADJUST THE TIMING BY TURNING THE UPPER LOOPER DRIVE CAM IN THE DIRECTION OF: (A): IF THE TIMING OF UPPER LOOPER IS ADVANCED AS SHOWN IN FIG. 3. (B): IF THE TIMING OF UPPER LOOPER IS DELAYED AS SHOWN IN FIG. 4. THE ALLOWANCE IS O.2TO 1.2 MM FROM THE LEFT EDGE OF LOWER LOOPER EYE AS SHOWN IN FIG. 1. 4. TIGHTEN TWO SETSCREWS. 5. CHECK THE CLEARANCE BETWEEN THE LOOPERS. 6. ATTACH THE MACHINE BASE. LOWER (FIG. 1) R LOOPER (FIG. 2) \ (FIG. 4) SETSCREWS MARKING-OFF LINE UPPER LOOPER DRIVE CAM 21
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