Re: 1981 xv750 - No run condition after carb rebuild

STarter issue is usually the flywheel teeth being ground down by starter.

Older Viragos had this issue if you were not real careful starting them.  DR Piston knew a guy who used to reverse the gearing on the flywheel to fix this as it is just the first bit that gets chewed up.  

If you must run the choke the bike is running way too lean as the choke richens it up and keeps it running.  But in doing so it is not the correct ratio.  

Check your carb to head seals.  (Spray some WD40 while it is running around the boot, if the rpm changes you found the leak).

Check to insure all vacuum lines are on and in good shape.  Putting the pet cock to prime floods gas into the engine to prime it.  That will flood the motor if you do it more than a few seconds.

The problem is your carbs.  If there is no vacuum leak then you will need to pull them and figure out what you did wrong to cause it to run so lean.