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Service Manual
Removal:
1-
Remove the free arm extension table, tension assembly dial, the knobs of the zig-zag and needle
position levers and all covers (face plate, rear, bottom bed and front)
3- Set stitch length and buttonhole control dial to "buttonhole step ".
4- Remove retaining rings (A) and (B)
5- By means of a broad bladed screw driver press the pin (D) forward from inside of the machine.
6- While pressing stud (D), rotate the entire assembly clockwise until the heads of the studs (C), (D)
and (E) are clear of the holes in plate (G).
7- Tilt the bottom of the assembly away from the machine and draw the assembly downward to
remove.
Replacement:
1-
Set the stitch length and buttonhole dial at maximum stitch length.
2- Insert the assembly in the machine aligning the head to stud (D) with the large hole (F) in plate (G).
If properly aligned, the assembly should be seating flush against the machine casting.
3- Slightly depress stud (D) toward the front of the machine and press firmly while rotating the
assembly slightly counterclockwise until the heads of studs (C), (D) and (E) snap into the openings of
the plate (G).
4- Replace retaining rings (A) and (B) and the cam controled feed mechanism.
5- Check and adjust if necessary:
Left-center-right needle position (Pages 70-7 )
l
Zero feed (Pages
l
Alignment of lever knobs with panel graphics (Pages 82-83)
l
Buttonhole cutting space (Pages
l
Rev. n .
o
MAY/00
Stitch length and
buttonhole control assembly
114 115
-
)
116 117
-
1
1
)
52
P/N 357773-002
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