I hope you can find what you need in this 15meg PDF file.
Also, Haynes sells a manual that contains quite a bit of 850 info for about $17.
eBay is a source for several DVD based repair manuals that are reasonably priced.
Please check one of the resource pages posted by S70Driver.
I have an owners manual as I have never bought a car without one.
I'm looking more for a service/diagnostic manual on cd. And not the Vadis that's available from eBay. That is a burned copy of the original disc that the lad had bought back in the day and is now out of date.
And it seems that you also have to back date your system to run it properly .