Vespa Pk 50 XL plurimatic

Hello vespa friends,

I have a vespa pk 50 xl plurimatic, with a 75 cc cilinder and a 22mm carborateur type PH VB 22.

I think there is also an reed valve installed but i am not sure, can not find documantation of it.

What do i need to install this carborateur ? Can i post a picture here ?

Hope someone can help me out

Gr. Ron