Just in case anyone who replied is remotely interested, a pal took the generator to work and the
electrician, who apparently "knows about generators", couldn't get it running any better than it
was.

I decided not to bother keeping the engine, so in the interests of recycling, I'm thinking about
hiding it in full sight in the allotment, as an appeasement to this months crop of travellers, who
will no doubt discover it during one of their nocturnal excursions.