Base Shaft - Fritz Gegauf Bernina artista 630 Service Manual

4.18 Base shaft

Disassembly:
1. Remove covers.
2. De-hook tension springs (30-34).
3. Remove feed-dog drop unit (43)
including securing screws (44).
4. Remove both bushing supports (45).
5. Loosen screw (46) and belt tensioner
(47). Retighten screw (46).
6. Remove securing screws (49) and
swing shaft bearing (49) down. Take
care not to lose ball and springs!
7. Loosen securing screws (35) on
stitch length stepping motor bracket.
8. Lift base shaft up to the left and
guide out to the right.
9. Replace base shaft.
30
51
35
33
31
50
Service-Manual_artista_630_640_english_V4.01_032069_50_04.doc
35
43
34
44
44
45
45a
45a
45
32
43
36