vi
Feed distance ..................................................................................................4 - 30
Straight forward/Straight reverse stitch length .................................................4 - 32
BH lever switch load ........................................................................................4 - 34
Left reverse stitch of buttonhole stitch length ..................................................4 - 35
BH stitch bar tack feed distance ......................................................................4 - 37
BH sewing length .............................................................................................4 - 39
Bobbin winder ..................................................................................................4 - 41
Needle threader ...............................................................................................4 - 42
Lower thread tension .......................................................................................4 - 44
5. Failure Investigation for Electronic Parts .........................................5 - 1
Sewing lamp does not light ................................................................................5 - 2
Main motor does not turn or Rotation speed is slow ..........................................5 - 3
6. Special Instructions of Wiring ...........................................................6 - 1
Motor 3P supply assy ........................................................................................6 - 2
LED lamp ...........................................................................................................6 - 4
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