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4 APPENDIX
The various maintenance and troubleshooting procedures are described in this chapter.
Stitch Settings..........................................................................................................94
Utility stitches....................................................................................................94
Care and Maintenance ..........................................................................................100
Restrictions on oiling........................................................................................100
Cleaning the machine surface ..........................................................................100
Cleaning the race .............................................................................................100
Troubleshooting ....................................................................................................102
Frequent troubleshooting topics.......................................................................102
Upper thread tightened up...............................................................................102
Tangled thread on wrong side of fabric............................................................103
Incorrect thread tension...................................................................................105
Fabric is caught in the machine and cannot be removed .................................106
When the thread became tangled under the bobbin winder seat .....................109
List of symptoms ..............................................................................................111
Error messages .................................................................................................115
Operation beep................................................................................................116
Index .....................................................................................................................117
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