Did a search and got a thousand posts
Trying to troubleshoot speedometer, MPH nor either odometer is working, tach works fine.. I unscrwed cable from ispeedometer end and cranked engine, it soes not turn, does that indicate cable issue. Just getting started on it and trying to save some steps if psssible.
In all of my white face Veglia speedometer tribulations, I never had a broken cable. Lots of issues with the lower angle drive at the gearbox, though.
Kneel down on the right side of the bike and inspect the angle drive, especially for the presence, or absence, of the metal disc that holds the drive gear in place.
I can post images of that later if helpful......
[edit: Here is a link to a post: