While you wait for answers, we may have found some information which could help you.
Success
Message
How can I fix my E&R Classic Sewing Machine, Model KPN400?\\|Z\ ?
my E&R Classic nt21 is sick?
Needle hits plate on sewing machine?
e&r classic?
Timing an E&R Classic NT21 sewing machine?
sewing machine e&r classic nt 21?
Tension Help for E&R RS 2000 Series?
Sewing machine problem !?
Why is my bobbin case jumping about?
how can i fix my foot control. classic E&R machine, HKT(s)-10260?
Tension problem?
My E&R LC21 feed dogs won't feed?