Basic of Disassembly
Removal of Tension pulley assy (timing belt)
1. Remove the screw (screw, pan (S/P washer) M4x12) and the nut 2 M4 to remove the tension pulley
assy from the arm bed.
2. Remove the timing belt from the lower shaft assy and the upper shaft assy.
Nut 2 M4
Lower shaft assy
Upper shaft, Needle-presser module
Upper shaft assy
2 - 21
Tension pulley assy
Screw, Pan (S/P washer) M4X12