Amri,(and any other plunger/rigid owners), do you have a date stamped into crankcase/chaincase- as per photos(blurry, but give the idea)?
Muskrat, Thanks for the pic, it's a definitive ID point, but still doesn't answer my query ie ; is the cover a slightly different shape, in that, is the angle between 'Idler-genny axis/Idler-Maggie axis more obtuse, making Idler-genny axis/crank-idler axis more acute(smaller radius underside of cover- front of 'piled arms') ie different gasket?
It's really not important,but just am curious as years ago I saw some and assumed to be A7 before I knew about long/short stroke, and it may just be an optical illusion??
Cheeers duTch