KE-430HX/KE-430HS, BE-438HX/BE-438HS
7-13. Tension release mechanism ............................ 103
7-14. Hook mechanism ............................................. 103
7-15. LED mechanism .............................................. 104
8. ASSEMBLY ........................................ 105
8-1. LED mechanism ................................................. 105
8-2. Tension release mechanism .............................. 106
8-3. Threading mechanism ....................................... 107
8-4. Thread wiper mechanism ................................... 108
8-5. Thread trimmer mechanism (1) .......................... 109
8-6. Thread nipper mechanism
(KE-430HX-03, -0K, -01 specifications only) ...... 110
8-7. Work clamp lifter mechanism ............................. 111
8-8. Feed mechanism ............................................... 114
8-9. Lower shaft mechanism ..................................... 117
8-10. Upper shaft mechanism ................................... 120
8-11. Needle bar mechanism .................................... 124
8-12. Lubrication ....................................................... 127
8-13. Hook mechanism ............................................. 127
8-14. Thread trimmer mechanism (2) ........................ 128
8-15. Work clamp arm mechanism (KE-430HX/HS) ... 129
8-16. Work clamp arm mechanism (BE-438HX/HS) ... 130
8-17. Covers ............................................................. 131
9. ADJUSTMENT .................................... 132
9-1. Standard thread tension ..................................... 132
9-1-1. Upper and lower thread tension .................. 133
9-1-2. Thread take-up spring ................................. 134
9-1-3. Arm thread guide C ..................................... 135
9-1-4. Needle bar bush thread guide D ................. 135
9-2. Adjusting the needle bar height .......................... 135
9-3. Adjusting the needle bar lift amount and
the driver needle guard ...................................... 136
9-4. Adjusting the needle clearance .......................... 136
9-5. Adjusting the shuttle race thread guide .............. 137
9-6. Hook lubrication amount .................................... 137
9-7. Adjusting the position of the movable knife ........ 138
9-8. Replacing the movable knife and fixed knife ...... 139
9-9. Adjusting the work clamp lift amount
(KE-430HX/HS) ................................................. 140
9-10. Adjusting the button clamp lift amount
(BE-438HX/HS) ................................................ 140
9-11. Adjusting the holding pressure
(BE-438HX/HS) ................................................ 141
9-12. Adjusting the position of the button clamp
(BE-438HX/HS) ................................................ 141
9-13. Adjusting the thread wiper ............................... 142
9-14. Adjusting the tension release amount
(KE-430HX, BE-438HX) .................................. 143
9-15. Adjusting the backlash amount (play) of
the lower shaft gear ......................................... 144
9-16. Adjusting the needle cooling ............................ 145
9-17. Checking the machine head switch ................. 146
9-18. Adjusting the main shaft motor reference
position ............................................................ 147
9-19. Adjusting the X- and Y-feed motor home
position ............................................................ 148
9-20. Adjusting the work clamp motor home
position ............................................................ 150
9-21. Adjusting the thread nipper motor position ...... 152
9-22. Setting method for standard depression
strokes (Foot switch) ........................................ 154
9-23. Data initialization method ................................ 155
9-24. Adjusting the touch panel key position ............ 156
9-25. Correcting the digital tension output
(KE-430HX, BE-438HX) .................................. 158
10. MAINTENANCE ................................ 160
10-1. Applying grease
(Work clamp: KE-430HX/HS) .......................... 160
10-2. Changing lubricating oil (When the oil change
warning is displayed) ....................................... 161
11. INSTALLING THE 2-PEDAL FOOT
SWITCH (OPTION) ........................... 165
12. TABLE OF ERROR CODES ............. 166
13. TROUBLESHOOTING ......................
171
13-1. Upper thread breakage /
lower thread breakage ..................................... 171
13-2. Skipped stitches .............................................. 173
13-3. Uneven seams (1)
…… Incorrect thread tightness ........................ 173
13-4. Uneven seams (2) …… Thread jamming ........ 174
13-5. Uneven seams (3)
…… Upper thread mis-winding ........................ 174
13-6. Uneven seams (4) …… All stitches ................. 175
13-7. Upper thread pulling out .................................. 176
13-8. If the upper thread trailing length is unstable ... 176
13-9. Incorrect upper thread trimming ...................... 177
13-10. Needle breakage ........................................... 179
13-11. Entanglement of upper thread with
the thread nipper (KE-430HX) ....................... 179