JUKI LK-1900B series - Threading the Machine Head; Installing and Removing the Bobbin Case

－
14
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1) Open hook cover
❶
.
2) Raise latch
❸
of bobbin case
❷
, and remove the
bobbin case.
3) When installing the bobbin case, fully insert it into
the shuttle shaft, and close the latch.
If it is not fully inserted, bobbin case
❷
may slip off during sewing.
4-3. Threading the machine head
Pull out the thread by approximately 40mm from the needle after threading through the needle.
1. When the silicon oil is used, thread through thread guide for silicon
❶
(Optional).
2. For thick thread, pass the thread through one hole only of needle bar thread guide
❷
.
4-4. Installing and removing the bobbin case
❶
❷
❸
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
❶
❷
Thin lament thread or the like
1903BBS sewing machine with the bird's nest preventing
and shorter-thread remaining type thread trimmer
(Polyester spun thread #80)