G1 crankcase reassemble, crankshaft puller problem

[cisgww]

For 1981 G1, what is the size of the threads on the end of the crankshaft...diameter and thread pitch?

I have a Tusk splitter/puller, borrowed from a friend. None of the adapters will thread onto the fan end of crank, nor will the flywheel nut fit inside the puller without rounding down the hex pattern. I need to get another nut and grind it down to fit.

Any other ideas?

[slonomo]

I made my own splitter from a universal puller. I had to weld some bolts together to make it work.

[mikeasis]

for splitting the cases off the crank i just used a bar puller and shaft protector. i did use the tusk crank puller to reassemble