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13. How to remove and attach the differential feed unit
7. Remove the 2 screws of feed arm shaft support set screws and
remove the Feed arm shaft support.
8. Remove E-ring.
9. Loosen the feed rod nut first and then remove the set screw.
10. Remove stitch length adjusting link set.
11. Loosen needle plate pin set screw.
12. Remove needle plate set screw and remove the needle plate and
needle set pin.
13. Remove screw of Left and right positioning of feed dog unit.
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