Brother International TN-875A Instruction Manual - English and Spanish - Page 12

Contents, Lower Feed [842a-02f, 03f]

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CONTENTS 1. NAMES OF MAJOR PARTS 1 2. MACHINE SPECIFICATIONS 3 3. OPTIONAL PARTS 6 4. WORK TABLE AND MOTOR 9 5. INSTALLATION 11 5-1. Installing the oil pan 12 5-2. Installing the machine head 13 5-3. Installing the knee lifter assembly 14 5-4. Installing the belt 16 5-5. Installing the bobbin winder 16 5-6. Installing the belt cover 17 5-7. Installing the cotton stand 18 5-8. Lubrication 19 5-9. Checking the machine pulley rotating direction 21 6. PREPARATION BEFORE SEWING 22 6-1. Installing the needle 22 6-2. Removing the bobbin or cap 23 6-3. Winding the lower thread 24 6-4. Installing the bobbin or cap 26 6-4-1. Installing the bobbin [841A, 842A, 847A, 872A 26 6-4-2. Installing the cap [845A, 848A, 875A] ........ 27 6-5. Threading the upper thread 29 6-6. Adjusting the stitch length 31 6-7. Corner sewing method [845A, 848A, 875A] ..... 33 6-7-1. To stop the needle bars (right and left) .... 33 6-7-2. Number of stitches: quick-reference guide 34 7. SEWING 35 7-1. Sewing 36 7-2. Backtacking [842A, 845A, 847A, 848A, 872A, 875A 36 8. THREAD TENSION 37 8-1. Adjusting the thread tension 37 8-2. Adjusting the presser foot pressure 38 9. SWITCHING BETWEEN UPPER FEED AND LOWER FEED [842A-02F, 03F 41 10. CLEANING 45 11. STANDARD ADJUSTMENTS 48 11-1. Adjusting of the feed dog height 49 11-2. Adjusting the presser foot height 50 11-3. Adjusting the thread tension spring 51 11-4. Adjusting the needle and rotary hook timing .. 53 11-4-1. Needle to rotary hook point gap 53 11-4-2. Clearances between rotary hooks and needle plate 54 11-4-3. Clearance between rotary hook and opener 55 11-4-4. Needle bar height and lift amount 56 11-5. Adjusting the rotary hook lubrication amount . 61 11-6. Adjusting of the needles and feed timing ........ 63 12. REPLACING GAUGE PARTS (CHANGING THE NEEDLE WIDTH 64 13. INSTALLING OPTIONAL PARTS 69 13-1. Replacing the rotary hook 70 13-2. Replacing the upper thread tension assembly 74 14. TROUBLESHOOTING GUIDE 75 - xi - TN-8400, 8700 TL-8400

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TN-8400, 8700
TL-8400
CONTENTS
1. NAMES OF MAJOR PARTS
.................................
1
2. MACHINE SPECIFICATIONS
.................................
3
3. OPTIONAL PARTS
..................................................
6
4. WORK TABLE AND MOTOR
................................
9
5. INSTALLATION
........................................................
11
5-1.
Installing the oil pan
...........................................
12
5-2.
Installing the machine head
...............................
13
5-3.
Installing the knee lifter assembly
.....................
14
5-4.
Installing the belt
.................................................
16
5-5.
Installing the bobbin winder
..............................
16
5-6.
Installing the belt cover
......................................
17
5-7.
Installing the cotton stand
..................................
18
5-8. Lubrication
............................................................
19
5-9.
Checking the machine pulley rotating
direction
................................................................
21
6. PREPARATION BEFORE SEWING
......................
22
6-1.
Installing the needle
............................................
22
6-2.
Removing the bobbin or cap
.............................
23
6-3.
Winding the lower thread
...................................
24
6-4.
Installing the bobbin or cap
...............................
26
6-4-1. Installing the bobbin
[841A, 842A, 847A, 872A]
...........................
26
6-4-2. Installing the cap [845A, 848A, 875A]
........
27
6-5.
Threading the upper thread
...............................
29
6-6.
Adjusting the stitch length
.................................
31
6-7.
Corner sewing method [845A, 848A, 875A]
.....
33
6-7-1. To stop the needle bars (right and left)
....
33
6-7-2. Number of stitches: quick-reference
guide
.............................................................
34
7. SEWING
.....................................................................
35
7-1. Sewing
..................................................................
36
7-2. Backtacking
[842A, 845A, 847A, 848A, 872A, 875A]
..............
36
8. THREAD TENSION
..................................................
37
8-1.
Adjusting the thread tension
..............................
37
8-2.
Adjusting the presser foot pressure
..................
38
9. SWITCHING BETWEEN UPPER FEED AND
LOWER FEED [842A-02F, 03F]
............................
41
10. CLEANING
................................................................
45
11. STANDARD ADJUSTMENTS
...............................
48
11-1. Adjusting of the feed dog height
......................
49
11-2. Adjusting the presser foot height
......................
50
11-3. Adjusting the thread tension spring
..................
51
11-4. Adjusting the needle and rotary hook timing ..
53
11-4-1. Needle to rotary hook point gap
...............
53
11-4-2. Clearances between rotary hooks
and needle plate
..........................................
54
11-4-3. Clearance between rotary hook and
opener
...........................................................
55
11-4-4. Needle bar height and lift amount
............
56
11-5. Adjusting the rotary hook lubrication amount .
61
11-6. Adjusting of the needles and feed timing
........
63
12. REPLACING GAUGE PARTS (CHANGING THE
NEEDLE WIDTH)
.....................................................
64
13. INSTALLING OPTIONAL PARTS
.........................
69
13-1. Replacing the rotary hook
..................................
70
13-2. Replacing the upper thread tension
assembly
..............................................................
74
14. TROUBLESHOOTING GUIDE
...............................
75