I sew with 2 old electric Singers that have never been to a repair shop. I’ve always followed the owners manuals for cleaning and oiling. Last year I bought a darling little 3/4 size green Singer on Craig’s List that sewed beautifully when I got it. Later it gave me trouble and I was stumped, so I took it to a repairman. It cost me $70.00 to find out my main problem was I had put a new needle in wrong. ��