This is a quicker & newer version of my previous video found below.
A subscriber made a suggestion and I will try that out as well!
Original video    • Briggs Primer Plate Fix When Double G...  

Briggs Gaskets -
https://tinyurl.com/3zek3bha
OR

You can search amazon or ebay for aftermarket gaskets or
Briggs & Stratton 795629 Briggs and Stratton Air Cleaner Gasket, Grey