95 vfr 750 component identification

What is it called, what does it do, how do I bypass it please help
I broke it cant plastic weld it cus it keeps snapping and can't
find it

 

Looks like the vacuum-actuated valve of the PAIR system, the fresh air injection into the exhaust. You could just block off the vacuum lines coming from the manifold (so you don't have an intake leak) and it would run just fine without the valve.

 

That is a standard canooter valve, since Kennybobby did such a terrible job of explaining its function I have included a link to explain it.

https://www.youtube.com/watch?v=SjxfAjAyp5k

 

Thanks Toe Cutter that video made it clear as mud :glee:

 

Ok I've changed out my carbs for a uk model and removed all the paired system but I'm still having problems
Ticks over perfect crank the throttle and it dies n cuts out then fires
Have had my original carbs and my spare set of uk versions but it's exactly the same
Help
Terns out my vfr is a Californian import go figure

 

That sounds like clogged pilot circuit to me. Are you running with the choke on?