– 57 –
Adjustment procedures
Results of Improper adjustment
1. Turn the alternate vertical dial
❶
to adjust the scale between
"7.5" to "8".
2. Loosen setscrews of the top cover to remove the top cover.
3. Loosen installing screws
❷
of the detection switch of the
amount of alternate vertical movement, and adjust so that the
distance between the detection switch of the amount of alter-
nate vertical movement
❸
to the alternate vertical dial
❶
is 0
to 0.4 mm.
4. Then tighten installing screws
❷
of the detection switch of the
amount of alternate vertical movement.
(Caution) When the position of the detection switch of the
amount of alternate vertical movement
❸
is changed,
check whether the relation between the alternate ver-
tical dial
❶
and the sewing speed is normal.
o
Sewing speed may not change
even when turning the alternate
vertical dial
❶
.
Summary of Contents for LU-2800 Series
Page 92: ... 80 2 NEEDLE BAR COMPONENTS ...
Page 93: ... 81 3 HOOK OPENNER COMPONENTS ...
Page 94: ... 82 4 UPPER FEED COMPONENTS ...
Page 95: ... 83 5 HAND LIFTER AUTO LIFTER COMPONENTS 6 KNEE LIFTER COMPONENTS FOR LU 2810 2860 ...
Page 96: ... 84 7 LOWER FEED COMPONENTS ...
Page 97: ... 85 LOWER FEED COMPONENTS FOR LU 2828 6 2828 7 ...
Page 98: ... 86 8 FEED ADJUST COMPONENTS ...
Page 99: ... 87 FEED ADJUST COMPONENTS FOR LU 2828 6 2828 7 ...
Page 100: ... 88 FEED ADJUST COMPONENTS FOR LU 2818 7 2868 7 ...
Page 102: ... 90 AUTO BT COMPONENTS FOR LU 2810 6 2860 6 2828 6 AUTO BT COMPONENTS FOR LU 2828 7 ...
Page 103: ... 91 AUTO BT COMPONENTS FOR LU 2818 7 2868 7 ...
Page 105: ... 93 THREAD TRIMMING COMPONENTS FOR LU 2828 6 2828 7 ...
Page 106: ... 94 12 THREAD TENSION COMPONENTS FOR LU 2810 2810 6 2810 7 2828 6 2828 7 2818 7 ...
Page 107: ... 95 13 THREAD TENSION COMPONENTS FOR LU 2860 2860 6 2860 7 2868 7 ...
Page 109: ... 97 15 BOBBIN WINDER COMPONENTS ...
Page 110: ... 98 16 CONDENSE COMPONENTS FOR LU 2818 7 2868 7 ...
Page 142: ......