To avoid the risk of re, electric shock, injury to persons or damage to components,
especially keep the following:
• When disassembling, assembling or adjusting the sewing machine, remove the power plug.
• When assembling, be careful about the electrical cord being caught with other components,
damage to the covered parts of the cord or miswiring.
• When replacing the part(s), use the genuine part(s).
WARNING :
27. Position of the needle thread take-up thread guide ............................................ 48
28. Tension of the belt .................................................................................................. 50
29. Adjusting the needle bar connection guide of the needle threader .................. 52
30. Adjusting the needle threader hook ..................................................................... 54
31. Adjusting the looper threader timing ................................................................... 56
32. Adjusting the pump unit ........................................................................................ 58
33. Position of the lower knife ..................................................................................... 60
34. Engagement of the upper knife with the lower knife .......................................... 62
35. Adjusting the timing of the upper knife ................................................................ 64
36. Adjusting the thread sliding segment .................................................................. 66
37. Adjusting the safety switch ................................................................................... 68
38. Position of the cloth plate ...................................................................................... 70
4
CIRCUIT DIAGRAM .......................................................................72
5
MAINTENANCE .............................................................................74
1. Lubrication ................................................................................................................ 74
2. Grease application ................................................................................................... 74
3. Looper threader ........................................................................................................ 74
6
TROUBLES AND CORRECTIVE MEASURES ............................. 75