I'm going to pick up the Steiner S20 today. I've been able to locate parts manuals, but no operator or service manuals for it. It's the predecessor to the M420 series, and Steiner uses the sames parts catalog for both machines.
If anyone has a copy they are willing to scan, or sell, please let me know.
My machine is an S20, serial number A8KG484.
Thanks in advance,