I had multiple manufacturers of kitchen appliances send me schematics so I could fix it myself instead of paying for a service visit. Many vendors have service guides online, including lists of parts. That's not hostile at all. You have to choose what you're buying, but it's not hard to buy from a solid company.

I had to fix my circa 2005 Kenmore dryer and it had a folded up paper schematic behind the panel!!!

Note: whenever throwing those things out, save the knobs. They’re like $10+ each.

Indeed, a lot of appliances have the schematics embedded. My ETA oven does too.