JUKI LK-1900B series - 33) S Hape Of The Inner Hook Presser; 34) a Djustment Of The Thread Take-Up Spring

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(33) Shape of the inner hook presser
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Standard adjustment
If wear seems to be too much around the pointed tip of the inner
hook, release the inner hook presser
❶
and conrm that the di-
mensions of the hatched area on the rear side are 0.3 x 8 mm.
(34) Adjustment of the thread take-up spring
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Standard adjustment
Dimension A
❶