About two years ago, I bought a Kenmore 21 sewing machine off eBay. It has worked great, but just recently I noticed a build-up of gooey black grease on the back of the machine, just behind the hand wheel and near the motor/belts, etc.
Any thoughts on the cause? I am wondering if the machine was oiled with something gnarly and if I need to get it cleaned out, or if this is more or less normal.
Thanks for any input!