Main unit
1
Bobbin winder assy. removal
1. Remove screw 1, and remove the bobbin winder assy. 1 and washer.
2
Bobbin winder assy. disassembly
1. Remove the bobbin base.
2. Remove screws 1 (two), and remove the Board presser 1.
3. Remove the Spring
S21
4. Remove the BW shaft holder assy. 2.
5. Remove screws 2 (two), and remove the bobbin winder shaft stopper and
the SW adjust plate.
6. Remove the BW SW-S assy. from the SW adjust plate.
3
Bobbin base assy. disassembly
1. Remove the bobbin thread cutter holder 1 from the bobbin base.
2. Remove the NT lower thread cutters 2 (two) from the bobbin base.
Upper shaft mechanism
.
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1
1
1
1
2
2
S21
1
2
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