Sewing machine cleaning & oiling
When I clean and oil my machines I simply follow the steps outlined in the manuals. Occasionally I have also taken them into the dealer to be "gone through" (whatever that means), cleaned, and oiled. Is there any substantial difference between what I do following the manual, and what they do? It seems there surely must be more moving parts other than the bobbin area, hook, and hook race area that need maintenance. One of my machines, a Bernina, is strictly mechanical. The other, a Janome Jem Platinum, has some computerization but is pretty simply and unsophisticated,. Does the dealer do more than I do for maintenance?