Eric,
This is great! Thanks for sharing your knowledge, this is all super helpful. I've got it all cleaned up and almost ready to sew. I'm excited to have a machine that's better for more lightweight materials. I mostly use a Consew 226 and a Sailrite Ultrafeed for rubber & vinyl, and have been relying on an old home machine for lighter tasks, though it's always a bit of a struggle. Sounds like this will be just what I've needed. I have no plans to sew leather with this machine, probably mostly nylon packcloth & similar materials. The clutch will take a bit of getting used to, I will try it out for a while before considering whether or not to look for a servo.
I've found plenty of the parts marked for the 281, I'm assuming those will also fit. I did finally find a manual for the 281-1, 281-3, & 281-21, I'll include a link. Do you know if a specific manual exists for the 2281?
https://wiki.artisansasylum.com/images/b/b6/Singer-281-1-service.pdf
Thanks again!!