Hello All

My first post at this great site may sound a little silly.

Whilst cleaning out my brigss and stratton sprint 375 fuel tank, I damaged the "diaphragm casket". I got hold of a new one, but it is in 2 parts. Rubberized and cardboard.

My question is, which one goes on first. As is which one would be against the carby body underside?

Many thanks

Dave