u/manycables

My grandmother kindly passed on a number of kitchen items, including this stand mixer. I've read that this is a good model, but I know nothing about them, and this one is a little worse for wear. It also seems to be missing the cover for the front accessory port (?).
Before I start messing around (and potentially making things worse), what is the best course of action? I've worked on other simple kitchen appliances, so if a teardown is necessary I'd feel comfortable if there are guides somewhere. Hoping this will be something my wife and I can use for years to come.