Originally Posted by
glorcour
My first machine was a 411 (the one with the chain stitch) bought in 1963. It is a workhorse and is now in the hands of my nonsewer daughter, But when I am there I use it and she still runs like before. It never ever needed service - NOT ONCE EVER!
Did you manage to make your Singer 411 go on a treadle? They were made to do electric or treadle. Check the owner's manual.