Thread Tension Unit - Bernina aurora 430 Service Manual

64

Thread tension unit

Disassembly:
1) Remove covers.
2) Remove securing screws 58.
3) Replace thread tension unit 59.
Assembly:
1) Fit new thread tension unit 59 and fasten
with the securing screws 58.
2) Put release piece on screw and set tension
release mechanism.
3) Set stitch width limiter page 71.
4) Refit covers.
5) Set thread tension mechanism (see page
80).
6) Check thread regulator spring (page 81)
7) Check thread tension release mechanism.
8) Sewing-off. 74 73
58
58
59