Roger,
It's 1 inch diameter by 3 1/8 long, with a 1/4 inch wide keyway the full length, and tapped 3/8 - 24 thread.
It can be updated to electric start but I will leave it as is. Here's another view / picture.
Mike,
Thanks, The engine came out of Maryland brand new in the original box. Not cheap, but probably cheaper
than overhauling a used VH70, when trying to find parts, labor and ETC.
Later.
Don