Dinosaur wind turbine

I am in Kenya and being of a technical persuasion have been asked to fix this geriatric wind turbine. It is an electromagnet (as apposed to permanent magnet) based generator that my friend bought from the Italian scouts. I cannot for the life of me get anything more than about 3V from it. Has anyone ever seen anything like this before and if so have any idea where on earth I might be able to find out a little more about who made it or how I might be able to fix it. I have tried everything I can and still no cigars.
Any help much appreciated.

I am here setting up this organisation if anyone is interested access(hyphen)wind(dot)com

Picture of Dinosaur wind turbine
Bernards turbine-2.JPG