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Needle bar, presser mechanism / Upper shaft mechanism
Basics of Disassembly
Basics
1 Removal of Tension pulley assy
1. Remove the 2 screws 1, and then remove the tension pulley assy. 1.
→ Refer to 3 - 20 "Disassembly of Tension pulley assy".
1
1
2 Removal of Upper shaft assy
1. Remove the screw 1 from the thread take-up counter weight 2 of the
upper shaft asssy. 1.
2. Remove the 4 screws 2, and then remove the 2 upper shaft bearing
pressers 3.
3. Remove the upper shaft asssy. 1 from the needle bar crank rod assy. 4,
and then remove the T belt 420-5GT-6 (timing belt) 5 and the timing belt
372-2GT-6 (motor belt) 6.
→ Refer to 3 - 20 "Disassembly of Upper shaft assy".
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2
33
2
2
5
61
1
3 Removal of Needle presser unit
1. Remove the label, and then remove the screw 1.
2. Remove the 2 screws 2, and then remove the needle presser unit 1.
→ Refer to 3 - 33 "Needle-presser module".
2
1
1
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