Glad to hear she is running.
Does this have a good paper fuel filter on her? Good clamps on both sides? New fuel line from tank to carb?
Do you have an old fuel can with say maybe an open top? If so, get a new style spout. You can buy just a spout. Help keep trash and water out of your fuel. Once your can fills with debris, you pass it to your mower. Grass clippings, hornets, dirt dobbers, leaves, WATER and so on LOL. I feel they keep the fuel fresher as well. Below the picture is the Briggs spout. Don't get some other cheap POS from Scamazon or Fleabay.
Inline fuel shutoff valve? Install and use it or if you don't have one get one.