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Basic of Disassembly
2
Removal of Upper shaft assy
1. Remove the screw (set screw, socket (FT) M5x5) from the thread take-up counter weight of upper shaft
assy.
Assenbling Note
• When attaching the screw, align the D cut surface of needle bar crank rod assy with the screw hole on thread
take-up counter weight.
2. Remove the two screws (taptite, bind S M4x10) to remove the two bushing pressers from the arm bed.
Remove the two lower shaft bushings of upper shaft assy from the two mounting positions of arm bed,
and slide the upper shaft assy in the direction of the arrow to remove the thread take-up counter weight
of upper shaft assy from the shaft of thread take-up lever.
D cut surface
Mounting position
Upper shaft, Needle-presser module
Shaft of thread take-up lever
Set screw, socket (FT) M5x5
Thread take-up counter weight
2 - 22
Thread take-up counter weight
Mounting position
Upper shaft assy
Lower shaft
bushing
Bushing presser
Taptite, bind S M4x10
Set Screw, Socket (FT) M5X5
Taptite, Bind S M4X10
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