JUKI LH-4128-7 Engineer's Manual page 10

(4) Hook differs with the type of sewing machine, i.e., the sewing machine with/without a thread trimmer. Be sure to
use a hook that is exclusively designed for the sewing machine head.
(5) How to pass the bobbin thread (The bobbin thread winding direction is indicated by the arrow.)
o LH-4128 Latch hook
o LH-4128-7 Latch hook with a thread trimmer
(6) When synthetic threads are used, the thread guide arm (asm.) for the thread stand (asm.) if the thread flaps
during sewing.
Thread guide arm (asm.)
o LH-4168-7 Hook with a thread trimmer and an separately
driven needle
o LH-4188-7 Hook with a thread trimmer and an separately
driven needle
Thread standing guide arm (asm.)
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