– 65 –
Adjustment procedures
Results of Improper adjustment
2) LU-2828-6, 2828-7
①
Zero-point alignment for 2P feed adjustment
1. Set the standard feed adjusting dial
❶
to “0”.
2. Turn the 2P feed adjusting dial
❷
to counter-clockwise, remove
the 2P feed adjusting dial screw
❺
.
3. Turn 2P switch
❽
ON.
4. Carefully and slightly turn the 2P feed adjusting dial
❷
to clock-
wise until a resistance is felt so that the 2P feed adjusting dial
screw
❺
is aligned with the 2P feed adjusting base
❻
.
5. Loosen setscrew
❸
of the 2P feed adjusting dial.
6. Turn the 2P feed adjusting dial
❷
to counter-clockwise, align
the dial stopper
❹
to the stopper.
7. Tighten setscrew
❸
of the 2P feed adjusting dial.
[Confirmation]
1. Set the standard feed adjusting dial
❶
to any pitch of “0” or
more.
2. Turn the 2P feed adjusting dial
❷
to counter-clockwise, align to
0 point alignment position (it stops at the dial stopper
❹
).
3. Turn ON the 2P switch
❽
.
4. Lower the reverse feed control lever
to align the cam section
(0 point position) of the 2P feed adjusting base
❻
with the 2P
feed adjusting pin
❼
(Fig. B).
5. Turning the handwheel, check to be sure that the stitch length
is zero (0). This shows that the zero-point alignment of the 2P
feed adjustment has been correctly carried out.
②
Forward/reverse stitch length of 2P feed adjustment
1. Loosen two setscrews
❾
of the feed adjusting eccentric pin.
2. Turn the feed adjusting eccentric pin
to adjust forward/re-
verse stitch length.
• Direction A
→
Reverse feed length is increased.
• Direction B
→
Normal feed length is increased.
3. After the adjustment, securely tighten two setscrews
❾
of the
feed adjusting eccentric pin.
[Confirmation]
1. Set the standard feed adjusting dial
❶
to “9”.
2. Set the 2P feed adjusting dial
❷
to “6”.
3. Turn ON the 2P switch
❽
, and check forward/reverse stitch
length.
* After adjusting forward/reverse stitch length ratio of 2P adjust-
ment, forward/reverse stitch length ratio of standard feed will
change. Adjust forward/reverse stitch length ratio according to
"2.-(10) Stitch length of forward/reverse feed".
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: ......