Zero Turn Mower. I'm stumped.

ALL I can say is "I HATE MOWERS!!!!!"

I have a mower problem, I work on it and can't fix it, I take it to a PRO shop, they work on it, I PAY them, and it still ain't fixed!!!!!!!!!!!!!!!!! Then it goes to the second pro shop>>>>>>>etc etc etc etc

On top of that wife says after all, "it is years old!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!" BS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Shoot me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
This one is a Toro Timecutter 16/44 and it's probably from the mid 1990s. I've had it about ten years now and it's still runnin pretty good.