We had a Bernina 1008S in for repair from a local school, the other day. The Bernina 1008S is the favourite choice of textiles teachers because it is so robust and produces an excellent stitch on all kinds of fabrics.
This machine needed a full service and the shuttle timing had to be reset. We go through a 40 point check list with all school sewing machines that come into our workshop for repair or service.
This Bernina was soon fully serviced and test sewn, ready to be returned.