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7. Differential feed adjustment
Correct positon : On condition diff.lever "N" position and stitch length dial "4",
main feed dog(rear) and sub feed dog (front) move same length.
Differential feed
adjuating lever
Differential feed
positining ratchet
Screw
Stitch length
dial
Sub feed dog
(front)
Main feed dog
(rear)
How to adjust
a) Move differential feed adjusting lever to get same moving length of
main and sub feed dog.
b) Loosen two screws of differencial feed positioning ratchet.
c) Hold connecting shaft by finger, move differential feed adjusting lever to "N"
position.
d) Tighten two screws.
6
Connecting
shaft
Summary of Contents for BL-101
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Page 43: ...4 0 9 0 1 0 3 Height of feed dog 4 Tension release Dropped feed dog adjustment A C B D E...