You can't believe how long it took me to find a manual for my new (old) Janome New Home 580 sewing machine. Here's one free for you to download.
There's a lot of people selling a manual, I've no idea if it's this one or not, the People at Janome sent this to me for free after I enquired about it. I didn't buy it from anyone online.
(The 580 and 581 are virtually identical from what I can tell, the person at Janome I talked to hadn't even heard of the 580! Apparently it's a bit rare!)