– 13 –
Adjustment procedures
Results of Improper adjustment
2) Opener timing
1. Loosen setscrew
❻
of the opener cam
❾
.
2. [With thread trimmer]
Three marker dots
D
on the handwheel
❼
aligns with mark-
er line
E
on the motor cover
❽
when the opener
❶
comes
nearest to the protruding portion of bobbin case. Then tighten
setscrew
❻
of the opener cam
❾
.
[Without thread trimmer]
The needle hole
F
of feed dog
and the center
G
of inner
hook
❷
and the base
H
of blade point of hook
are aligned
linearly when the needle bar has gone up and the opener
❶
comes nearest to the protruding portion of bobbin case. Then
tighten setscrew
❻
of the opener cam
❾
.
* It can be said that opener
❶
is in the closest position to the hook
in a certain phase-angle range (interval). Press opener cam
❾
against lower shaft gear
immediately before opener
❶
is
moving away from the closest position to the hook. In this state,
tighten setscrew
❻
of opener cam
❾
.
Standard adjustment
[Without thread trimmer]
[With thread trimmer]
❷
G
H
❶
F
❷
H
E
❽
❼
D
Содержание LU-2800 Series
Страница 92: ... 80 2 NEEDLE BAR COMPONENTS ...
Страница 93: ... 81 3 HOOK OPENNER COMPONENTS ...
Страница 94: ... 82 4 UPPER FEED COMPONENTS ...
Страница 95: ... 83 5 HAND LIFTER AUTO LIFTER COMPONENTS 6 KNEE LIFTER COMPONENTS FOR LU 2810 2860 ...
Страница 96: ... 84 7 LOWER FEED COMPONENTS ...
Страница 97: ... 85 LOWER FEED COMPONENTS FOR LU 2828 6 2828 7 ...
Страница 98: ... 86 8 FEED ADJUST COMPONENTS ...
Страница 99: ... 87 FEED ADJUST COMPONENTS FOR LU 2828 6 2828 7 ...
Страница 100: ... 88 FEED ADJUST COMPONENTS FOR LU 2818 7 2868 7 ...
Страница 101: ... 89 9 DL COMPONENTS FOR LU 2810 6 2810 7 2860 6 2860 7 10 AUTO BT COMPONENTS FOR LU 2810 7 2860 7 ...
Страница 102: ... 90 AUTO BT COMPONENTS FOR LU 2810 6 2860 6 2828 6 AUTO BT COMPONENTS FOR LU 2828 7 ...
Страница 103: ... 91 AUTO BT COMPONENTS FOR LU 2818 7 2868 7 ...
Страница 104: ... 92 11 THREAD TRIMMING COMPONENTS FOR LU 2810 6 2810 7 2860 6 2860 7 2828 6 2828 7 2818 7 2868 7 ...
Страница 105: ... 93 THREAD TRIMMING COMPONENTS FOR LU 2828 6 2828 7 ...
Страница 106: ... 94 12 THREAD TENSION COMPONENTS FOR LU 2810 2810 6 2810 7 2828 6 2828 7 2818 7 ...
Страница 107: ... 95 13 THREAD TENSION COMPONENTS FOR LU 2860 2860 6 2860 7 2868 7 ...
Страница 108: ... 96 14 TENSION RELEASE COMPONENTS FOR LU 2810 6 2810 7 2860 6 2860 7 2828 6 2828 7 2818 7 2868 7 ...
Страница 109: ... 97 15 BOBBIN WINDER COMPONENTS ...
Страница 110: ... 98 16 CONDENSE COMPONENTS FOR LU 2818 7 2868 7 ...
Страница 142: ......