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1. NAMES OF MAJOR PARTS .................................
2. MACHINE SPECIFICATIONS ...............................
3. OPTIONAL PARTS ................................................
4. INSTALLATION ....................................................
4-1. Work Table ............................................................. 9
4-2. Installing the control box ..................................... 10
4-3. Installing the machine head ................................. 11
4-4. Installing the cotton stand .................................... 13
(-30□ • 31□ • 40□ • 41□ ) .................................. 13
4-6. Installing the knee switch (-90□ • 91□ ) ............ 14
4-7. Lubrication ............................................................ 15
4-8. Connecting the cords ........................................... 17
4-8-1. Opening the control box cover ................. 17
4-8-2. Connecting the cords ................................. 19
4-8-3. Using the binding strap ............................. 20
supply connector and power cord ....................... 21
4-10. Test operation (Operating the treadle) ............. 23
5. PREPARATION BEFORE SEWING ......................
5-1. Installing the needle ............................................. 25
5-2. Removing the bobbin case .................................. 26
5-3. Winding the lower thread .................................... 27
5-4. Installing the bobbin case .................................... 28
5-5. Threading the upper thread ................................. 29
5-6. Adjusting the stitch length .................................. 30
(-30□ • 31□ • 40□ • 41□ ) .................................... 30
(-90□ • 91□ ) ........................................................ 31
(-40□ • 41□ • 90□ • 91□ ) .................................. 32
6. USING THE B-40 OPERATION PANEL ...............
6-1. Part names and functions .................................... 33
6-2. Setting a sewing operation .................................. 39
6-3. List of operations .................................................. 45
7. USING THE B-100 OPERATION PANEL .............
7-1. Part names and functions .................................... 53
7-2. Standard pattern sewing operations ................... 62
(patterns 5 - 9) ....................................................... 71
7-4. Programming without sewing ............................. 75
7-5. Changing a program ............................................. 77
7-6. Programmed sewing (examples) ........................ 79
8. LOWER THREAD REMAINDER SETTING ..........
9. SEWING ...............................................................
9-1. Sewing ................................................................... 86
9-2. Backtacking ............................................................ 86
CONTENTS
10. THREAD TENSION ..............................................
1
10-1. Adjusting the thread tension ............................. 87
3
thread trimming .................................................. 88
5
10-3. Adjusting the presser foot pressure ................. 88
7
11. CLEANING ...........................................................
12. REPLACING PARTS .............................................
12-1. Replacing the fixed knife .................................... 96
12-2. Replacing the movable knife .............................. 97
13. STANDARD ADJUSTMENTS .............................
13-1. Adjusting the thread tension spring ................. 99
13-2. Adjusting arm thread guide R ......................... 101
13-3. Adjusting the presser foot height ................... 102
13-4. Adjusting of the feed dog height ..................... 103
13-5. Adjusting the feed dog angle .......................... 104
13-6. Adjusting the needle bar height ..................... 106
mechanism timing ........................................... 107
hook timing ........................................................ 109
25
13-9. Synchronizer Adjustment ................................ 110
lubrication amount ........................................... 112
13-11. Adjusting the treadle ...................................... 117
14. INSTALLING OPTIONAL PARTS ......................
detector ............................................................. 118
presser lifter ...................................................... 121
14-3. Installing the thread wiper .............................. 126
pedal .................................................................. 131
14-5. Installing the casters ........................................ 135
14-6. Installing the spacers ....................................... 136
33
materials or the rotary hook RP ...................... 137
14-8. Installing the illumination lamp ...................... 141
15. TROUBLESHOOTING ........................................
53
16. NOTES ON TRANSPORTATION ......................
81
85
DB2-DD7100A
87
91
95
98
118
143
163
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