You can download a manual for the 310 from sew-classic or Ismacs that has a couple of pages on cleaning, oiling and lubing. Oil her often if you use her heavily, but don't lubicate the gears (use Singer lube) any more than the book says - I think every six months. Mine was supposed to be serviced before she was shipped, but I found a lot of packed lint in the bobbin area, plus the machine was very dry. I'm still looking for another 301.