Need help with an old Briggs and Stratton

[SunsetBengal]

Try this link for the air filter.

https://www.amazon.com/Briggs-Stratton-5088K-Air-Filter/dp/B00114PCEI/ref=asc_df_B00114PCEI/?tag=hyprod-20&linkCode=df0&hvadid=351606580515&hvpos=&hvnetw=g&hvrand=14588004529126000853&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9009675&hvtargid=pla-759240095425&psc=1&tag=&ref=&adgrpid=71965060518&hvpone=&hvptwo=&hvadid=351606580515&hvpos=&hvnetw=g&hvrand=14588004529126000853&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9009675&hvtargid=pla-759240095425

I would also recommend running some fuel stabilizer through, to help clean out any residue on the small parts in the carburator.