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and Hand switch assembly ................ 98
device assembly ................................ 100
release wire ................................................. 101
6-17-2. Harnesses ......................................... 102
6-17-3. Tension release wire ......................... 103
specifications) .............................................. 104
specifications) .............................................. 105
(-[]0[] specifications only) ............................. 106
6-21. Needle plate, feed dog, etc. ........................ 106
6-22. Covers. ........................................................ 107
6-22-1. Panel ................................................. 107
6-22-2. Top cover and pulley cover ............... 108
6-23. Connector. ................................................... 109
6-24. Thread wiper. ............................................... 110
6-25. Knee lifter assembly. ................................... 112
7. ADJUSTMENTS ..................................
7-1. Thread tension spring .................................... 114
7-2. Arm thread guide R ....................................... 115
7-3. Presser foot height ........................................ 115
position .......................................................... 116
vertical movement, etc.) ................................ 119
position ................................................ 119
with the actual stitch length ................. 121
7-5-3. Adjusting the reverse stitch length ...... 121
7-5-4. Basic adjustments ............................... 122
7-5-5. Adjusting the vertical feed amount ...... 125
7-5-6. Adjusting the level feed timing ............ 126
(-[][]5 specifications only) .................... 127
7-6. Adjusting the needle bar height ..................... 128
7-7. Needle and rotary hook timing ...................... 129
(-[][]3 specifications) ...................................... 130
(minute lifting amount) (option) ...................... 131
release wire ................................................... 132
7-10-6. Checking after adjustment................ 137
amount ........................................................ 138
strokes ........................................................ 139
(Premier specifications) .............................. 140
7-14. Touch key adjustment ................................. 142
8. REPLACING PARTS ...........................
specifications) ............................................... 144
113
specifications) ............................................... 147
8-3. Main shaft motor ........................................... 151
8-4. Feed motor .................................................... 155
8-5. Feed bar shaft, lifting feed shaft ................... 159
8-6. Panel ............................................................. 160
8-6-1. Replacing panel .................................. 160
(- []3[] SPECIFICATIONS) ...................
10. ELECTRIC MECHANISM ..................
10-1. Precautions at the time of adjustment ........ 167
10-2. Connectors .................................................. 168
10-2-1. Connector positions .......................... 168
10-3. Fuse explanation ......................................... 170
10-4. Checking the motor and power supply ....... 171
10-5. Checking the solenoids ............................... 173
11. TROUBLESHOOTING .......................
11-1. Troubleshooting .......................................... 174
11-2. List of error codes ....................................... 181
S-7300A
assembly position ............................. 133
position.............................................. 134
(Premier specifications) .................... 135
position (Premier specifications) ....... 136
assembly position ............................... 164
144
165
167
174
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