The Jonsereds XF was never imported into the USA, so, locating one in this country will be difficult, not impossible, but difficult. I would speculate there are only a handfull of "XF's" in the USA.
A saw such as the XF will most likely need to be sourced from Scandinavia where they are not so rare.
Jonsereds entered the US market in the very late 1960's with the 601, and, even these are difficult to find now !
I have all litereture for the XF, sales brochure, operators manual, and parts list. Copies are available for the price of copies at Staples and postage. They are, however, in Swedish.
My XF can be viewed on Mike's site.
Good Luck !