Have you tried contacting Walthers?
I've looked for plans and diagrams. They have just emailed me a PDF, like immediately, no questions asked.
It takes an iron man to play with a toy iron horse.
Rambo,Yes that would be great.
I just checked but mine is the SD-50.
You can find the SD60 at HOseeker.com
https://hoseeker.net/lifelike.htm
Click the "engine diagrams, parts numbers" menu and scroll down.
Good Luck, Ed
Does anyone have the parts list for Proto 2000 sd 60 that they would post?