I've been looking for a shop to certify and if necessary overhaul a
Ball 400 series vario, and in doing so I found there are others
looking for the same. Since I saw some people concerned they have no
manual for this older vario, I thought I would make available the
manual included in the logs for my Aer Pegaso M100S.

http://www.bd5.com/BallVario400SeriesManual.pdf

If you need it, help yourself. Enjoy.

Juan