I have a Toro ride on mower and when new I had a lot of slow and not so slow punctures due to thorns from hedge cuttings. Nightmare. Then I put Goop in the tyres and it totally solved the problem. Not had a puncture now for 15+ years.
I once had an issue where the mower would die after an hour. Turned out to be bugs bleached almost transparent blocking the outlet of the tank. It was crazy that it was so repeatable, eg 1 hour of use no problem then cough cough died. After a few mins it could be restarted but would soon die...