heat & sewing machine oil and patience. work a little bit at a time on it. i used a hairdryer on one i just bought to melt the lubricant that was gunked up inside.

for shiny parts i used simichrome paste from a local hardware store here. i can't see if you even have shiny parts on that machine, but you might.

Have you tried TriFlow yet? It's a penetrating oil with Teflon in it.

Tri-Flow oil first, if that doesn't do it, then a penetrating oil such as Liquid Wrench. Then heat.

Tri-Flow can be had at Sew-Classic or most bicycle shops.

Joe

that is so different-love it

not all Tri-flow has teflon