1. NAMES OF MAJOR PARTS.................................. 1
2. MACHINE SPECIFICATIONS ................................ 3
3. SEWING PATTERN TABLE ................................... 7
4. OPTIONAL PARTS................................................. 9
5. INSTALLATION...................................................... 11
5-1. Work Table ...................................................... 12
5-2. Installing the control box ............................... 13
5-3. Installing the motor ........................................ 14
5-4. Installing the oil pan....................................... 15
5-5. Installing the machine head .......................... 16
5-6. Installing the knee lifter plate
(Except-90 ) ................................................. 17
5-7. Adjusting the knee lifter (Except-90 )........ 17
5-8. Installing the belt ............................................ 19
5-9. Installing the bobbin winder ......................... 20
5-10. Installing the belt cover .................................. 21
5-11. Connecting the cords ..................................... 24
5-11-1. Ground Wire Connections............... 25
5-11-2. Connecting the harness................... 26
5-11-3. Connecting the power cord............. 30
5-11-4. Connecting the automatic presser
foot lifter harness (B856E-90
or option) ........................................... 31
5-11-5. Connecting the standing pedal
harness (option) ............................... 32
5-12. Installing the cotton stand .............................. 33
5-13. Connecting the connecting rod..................... 33
5-14. Lubrication ...................................................... 34
5-15. Test operation (Operating the treadle) ......... 35
5-15-1. Turning on the power ...................... 35
5-15-2. Operating the treadle....................... 38
5-16. Adjusting the treadle...................................... 44
6. PREPARATION BEFORE SEWING ........................ 46
6-1. Installing the needle....................................... 46
6-2. Removing the bobbin case............................ 47
6-3. Winding the lower thread .............................. 48
6-4. Installing the bobbin case.............................. 50
6-5. Threading the upper thread .......................... 51
6-6. Adjusting the stitch length ............................ 53
6-7. Backtacking ..................................................... 54
6-8. Using the thread wiper (B856E-40 ,
-90 ).............................................................. 56
7. USING THE OPERATION PANEL ......................... 57
7-1. Part names and functions .............................. 57
7-2. Pattern setting method .................................. 66
7-2-1. Setting the sewing pattern.............. 69
7-2-2. Setting the zigzag width .................. 77
7-2-3. Setting the zigzag base line
position ............................................. 79
7-2-4. Setting the zigzag stop position ..... 83
7-3. Setting the sewing speed .............................. 84
7-4. Correction sewing ........................................... 91
7-5. Using slow start (B856E, B855E/BT only) ..... 92
7-6. Setting start backtacking
(B856E, B855E/BT only).................................. 93
7-7. Setting end backtacking
(B856E, B855E/BT only).................................. 101
7-8. Setting fixed stitches/name label sewing
(B856E, B855E/BT only).................................. 111
8. SEWING................................................................. 120
8-1. Sewing ............................................................ 121
9. THREAD TENSION................................................ 122
9-1. Adjusting the thread tension ......................... 122
9-2. Adjusting the presser foot pressure ............. 124
10. CLEANING............................................................. 125
11. REPLACING PARTS .............................................. 129
11-1. Fixed knife and movable knife
(B856E only) .................................................... 130
11-2. Gauge parts (presser foot, needle plate
and feed dog).................................................. 131
11-3. Compression spring (B855E-1 and
B856E- 01 only) ........................................... 134
12.STANDARD ADJUSTMENTS ............................... 135
12-1. Adjusting the thread tension spring ............. 136
12-2. Adjusting the presser foot height ................. 138
12-3. Adjusting the feed dog height....................... 139
12-4. Adjusting the feed dog angle ........................ 140
12-5. Adjusting the forward/back position of
the feed dog .................................................... 141
12-6. Adjusting the needle and feed
mechanism timing ......................................... 142
12-7. Adjusting the needle bar height..................... 143
12-8. Needle and rotary hook timing ..................... 145
12-9. Hook stopper position.................................... 145
12-10.Adjusting the synchronizer............................ 149
12-11.Adjusting the rotary hook lubrication
amount ............................................................ 151
12-12.Adjusting the thread trailing length
after thread trimming (B856E only) .............. 153
12-13.Adjusting the position of the thread
trimming cam (B856E only) ........................... 157
12-14.Adjusting the tension of the lower thread
presser spring (B856E only) .......................... 161
12-15.Adjusting the thread wiper (B856E only) ..... 162
12-16.Setting the DIP switches ................................ 163
13.REFLECTION PATTERN SWITCH (OPTION) ........ 169
14.DIAL LOCK LEVER (OPTION) ............................... 176
15.WHEN USING A NON-STANDARD FEED DOG .. 177
16.TROUBLESHOOTING ........................................... 179
16-1. Machine head ................................................. 179
16-2. Operation panel ............................................... 182
16-3. List of error codes ........................................... 183
CONTENTS