4
4 - 1
Preparation Removal of covers ...............................4 - 2
Inspection Needle point damage...........................4 - 4
Adjustment Timing belt tension...............................4 - 5
Motor belt tension.................................4 - 6
Needle plate holder assy position ........4 - 7
Presser foot hole / Needle plate hole
position (front/back)..............................4 - 8
Needle swing timing.............................4 - 9
Three point needle drop.....................4 - 10
Needle interference left/right..............4 - 11
Needle bar rising................................4 - 12
Needle bar height...............................4 - 14
Needle clearance ...............................4 - 15
Left straight stitch needle drop and
zigzag stitch maximum
left needle drop position.....................4 - 16
Feed dog position
(front/back and left/right) ....................4 - 18
Feed dog height .................................4 - 19
Upper thread tension..........................4 - 20
Left and right stitch of
buttonhole stitch length ......................4 - 22
Bobbin winder ....................................4 - 25
Lower thread tension..........................4 - 26
Adjustment
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