RE: Efco 8420
[link]http://www2.emak.it/database/emak/emak.nsf/ed8ec854304afc4ac1256a4200522c7d/70d2781f9c9c6256c1256a4600589d17!OpenDocument&lng= eng[/link]
here's a link to the efco site. looks like they have downloadable manuals but i don't see your model #, maybe it's an older model. try mailing them for info.
dave