ORIGINAL: Motorboy
I has ETA 15 and ED Mark IV , they has an extra hole in rear dish valve to reverse the engine..
That got me curious Jens so I've just ripped off the backplate from my ETA Elite...it's only got the one drive hole so maybe they changed that. BTW, it's the only diesel I've ever had that'll give a "bump" when turning it over slowly like a glow engine with the ignitor on