For years we've heard that our sewing machines should be unplugged if we leave our machines for an extended period of time. You just heard it again.And I don't mean just the Featherweights owners should. Almost every manufacturer of sewing machines today still tells owners to unplug their machines.
Many Featherweight owners will reach over and turn the switch located down low and to the right of the base of the machine off, and the light turns off. And that is all that that turned off. By turning the switch off you have not turned the machine off, just the light!
If the foot controller wonders out of adjustment after sixty years the controller can get hot. Very hot. The adjustment of the controller will be the subject of the my next blog, but for the time being please unplug your machine before you walk away for an extended period of time. Once and awhile feel your controller to be sure it is not getting hot. Room temperature is one thing, hot is different!
Unplugging the machine is such a bother, but turning off a power strip isn't I plug a radio, my additional lighting and my machine into the same power strip. My Man-Cave is up stairs and all I have to do is cock an ear at the bottom of the steps to assure myself I have turned things off because I can't hear the radio.
Source: Dave's Blog