b) Points to Note on disassembly and Reassembly of Carriage Unit
1) Align the mark on the gear[3] with the mark on the bushing[4]. Align the mark on the lift gear[1] with the mark on the gear[2] to remove the ring[5].
2) Install the linear scale with its R-mark [1] located on the right side of the unit.
3) Install the left right lift cam [1] so its circular dent comes in the direction as shown (right side of the unit).