[Russ/40]

19Fordy, the tool to which you refer in post 41, the link to older tool posts is actually my tool. Surely the most complex of the tool suggested, but no more difficult to use. Sets up in seconds and gives easy adjustment control.
The tool anchors on the bolt mounting stud for the generator through the top with a deep socket. It then clamps the generator mount foot. By simply cranking the nut on the bottom you are raising the generator effortlessly.

So you put the tool on, loosen the stud bolt and crank the bottom nut. When the desired tension is reached, you tighten the generator mount nut, pull the socket out of the top and remove the tool.

more photos below: For Helmit style distributors, you need to remove the coil. For crabs you do not need to remove the coil.