1. NAMES OF MAJOR PARTS ..................................
1
2. MACHINE SPECIFICATIONS ................................
3
3. SEWING PATTERN TABLE ...................................
7
4. OPTIONAL PARTS .................................................
9
5. INSTALLATION ......................................................
11
5-1.
Table processing diagram .............................. 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 (856A-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 (856A-40 [ ]
,
-90 [ ]
) .............................................................
56
7. USING THE OPERATION PANEL .........................
57
7-1.
Part names and functions ..............................
57
7-2.
Pattern setting method ..................................
69
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 (856A, 855A-A0 [ ] only) ....
92
7-6.
Setting start backtacking
(856A, 855A-A0 [ ] only) .................................. 93
7-7.
Setting end backtacking
(856A, 855A-A0 [ ] only) .................................. 105
7-8.
Setting fixed stitches/name label sewing
(856A, 855A-A0 [ ] only) .................................. 115
7-9.
Operation panel key locking method ............ 124
8. Using the lower thread counter .......................... 125
9. SEWING ................................................................. 128
9-1.
Sewing ............................................................ 129
10. THREAD TENSION ................................................ 130
10-1. Adjusting the thread tension ......................... 130
10-2. Adjusting the presser foot pressure ............. 132
11. CLEANING ............................................................. 133
12. REPLACING PARTS .............................................. 137
12-1. Fixed knife and movable knife
(856A only) ...................................................... 138
12-2. Gauge parts (presser foot, needle plate
and feed dog) .................................................. 139
12-3. Compression spring (855A- [ ] 01 and
856A- [ ] 01 only) ............................................ 142
13. STANDARD ADJUSTMENTS ............................... 143
13-1. Adjusting the thread tension spring ............. 144
13-2. Adjusting the presser foot height ................. 146
13-3. Adjusting the feed dog height ....................... 147
13-4. Adjusting the feed dog angle ........................ 148
13-5. Adjusting the forward/back position of
the feed dog .................................................... 149
13-6. Adjusting the needle and feed
mechanism timing ......................................... 150
13-7. Adjusting the needle bar height ..................... 151
13-8. Needle and rotary hook timing ..................... 153
13-9. Hook stopper position .................................... 153
13-10. Adjusting the synchronizer ............................ 157
13-11. Adjusting the rotary hook lubrication
amount ............................................................ 159
13-12. Adjusting the thread trailing length
after thread trimming (856A only) ................. 161
13-13. Adjusting the position of the thread
trimming cam (856A only) .............................. 165
13-14. Adjusting the tension of the lower thread
presser spring (856A only) ............................ 169
13-15. Adjusting the thread wiper (856A only) ........ 170
13-16. Setting the DIP switches ................................ 171
13-17. Memory switch setting method ..................... 177
14. OPTIONAL PARTS ................................................. 190
14-1. Reflection pattern switch ............................... 191
14-2. Dial lock lever ................................................. 197
14-3. Presser bar U and presser bar tip ................. 198
14-4. Thread guide F ................................................ 201
14-5. Gauge set (for pocket attaching) ................... 203
15. WHEN USING A NON-STANDARD FEED DOG .. 204
16. TROUBLESHOOTING ........................................... 205
16-1. Machine head ................................................. 205
16-2. Operation panel ............................................... 208
16-3. List of error codes ........................................... 209
CONTENTS