Threading The Machine Head; Installing And Removing The Bobbin Case - JUKI LK-1900BN Series Instruction Manual

4-3. Threading the machine head

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Pull out the thread by approximately 40 mm 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

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 filament thread or the like
1903BBNS sewing machine with the bird's nest preventing
and shorter-thread remaining type thread trimmer
(Polyester spun thread #80)
❸
❷
❶
－
15
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.
－