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BAS-311G, BAS-326G
6. ASSEMBLY ......................................... 58
6-1. Thread trimmer mechanism (1) ............... 58
6-2. Intermittent presser foot lifter
mechanism (1) ......................................... 60
6-3. Tension release mechanism ..................... 60
6-4. Work clamp lifter mechanism
(Solenoid specifications) ......................... 61
6-5. Work clamp lifter mechanism
(Pneumatic specifications) ...................... 64
6-6. Feed mechanism....................................... 66
6-7. Feed covers .............................................. 73
6-8. Upper shaft mechanism ............................ 75
6-9. Needle bar mechanism ............................. 77
6-10. Intermittent presser foot lifter
mechanism (2) ......................................... 79
6-11. Lower shaft mechanism ............................ 81
6-12. Shuttle hook mechanism........................... 83
6-13. Thread trimmer mechanism (2) ............... 83
6-14. Work clamp arm mechanism..................... 84
6-14-1. Adjustments after work clamp arm
installation......................................... 85
6-15. Thread wiper mechanism.......................... 86
6-16. Covers....................................................... 87
7. ADJUSTMENT .................................... 88
7-1. Checking the machine head switch........... 88
7-2. Standard thread tension............................ 89
7-2-1. Upper and lower thread tension........ 89
7-2-2. Thread take-up spring....................... 90
7-2-3. Arm thread guide R........................... 90
7-3. Adjusting the needle bar height................. 91
7-4. Adjusting the needle bar lift amount.......... 91
7-5. Adjusting the driver needle guard.............. 91
7-6. Adjusting the needle clearance................. 92
7-7. Adjusting the shuttle race thread guide..... 92
7-8. Rotary hook lubrication amount................. 92
7-9. Adjusting the position of the movable
knife .......................................................... 93
7-10. Replacing the movable and fixed knives ... 95
7-10-1. Installing the feed plate...................... 96
7-11. Adjusting the thread wiper ......................... 97
7-12. Presser foot installation position................ 97
7-13. Changing the intermittent stroke................ 98
7-14. Adjusting the work clamp lift amount .........100
7-15. Adjusting the air pressure
(pneumatic specifications) .........................100
7-16. Adjusting the thread trimmer cam
position ......................................................101
7-17. Belt tension adjustment .............................101
7-18. Adjusting the tension release amount........102
7-19. Adjusting the backlash of the lower
shaft gear...................................................103
7-20. Adjusting the home position.......................104
7-20-1. Work clamp lift home position............104
7-20-2. X-Y feed home position .....................105
7-21. Adjusting the needle up stop home
position ......................................................107
7-22. Adjusting the needle up stop position........108
8. ELECTRICAL MECHANISM ...............110
8-1. Precautions while carrying out
adjustments ...............................................110
8-2. Inside the control box and operation
panel structure...........................................111
8-3. Description of fuses...................................112
8-4. Description of connectors ..........................113
8-4-1. Connector positions...........................113
8-4-2. Symptoms when there are poor
connections .......................................116
8-5. Troubleshooting.........................................119
8-5-1. Diagnosis flowchart ...........................119
8-5-2. Remedy.............................................123
9. TABLE OF ERROR CODES ...............137
10. TROUBLESHOOTING ......................141
11. 7-SEGMENT DISPLAY .....................144