aprilia caponord 1200 rally engine problem
 

Anyone have a problem with capo engine stopping after 1 to 2 mins running and being able to restart but to die again and again after a minute or two?

Sounds like running out of fuel - check the fuel cap vent isn't blocked.
Past that, we'll need a lot more detail!

I've had similar problems due to: partially-clogged carb vent, vapor lock, and swollen fuel hose along with the fuel filter and tank vent mentioned above. You (or someone hired by you) will start with the obvious (fuel) before moving on to the also-rans (spark mysteriously vanishing). Chances are outstanding it'll be something simple and obvious.

Caveat: I know nothing about this brand or engine. All of the above is entirely generic.

Good luck.