Why does a sewing machine motor overheat?
I`ve just bought a Singer 222k Featherweight from a charity shop. The owner wrote a label saying `It works perfectly` and for about half an hour it did, but then it started slowing down and I stopped sewing. The motor was hot to the touch and seemed to still be `purring`without me pressing the pedal, so I unplugged it. I`ve read some articles, but am not sure whether the needle shaft needs oil, or the motor, or could it be a pedal problem? Any ideas or advice will be very welcome! Thank you.
Sally, December 2016