I've just started-up an Allam2000 2.2kW brush-less genny that hasn't been used for quite a few years. It's had very little use since new and has been stored dry, when last used it was OK. It now starts/runs fine but there's no output. Can they lose the residual magnetism and need "flashing" like the old car dynamos? Is there any reason not to connect it briefly (when running) to the mains via a 60W bulb?
Hugh