I just took my fuel tank out as I had the same problem as you. The sending unit has a ton of rust on it and would have been an ongoing source of debris. Ordering a new one and cleaning the tank the best I can. The tractor is 9 years old.
I have a tg1860 and the mower deck will not engage. If I pull the button to engage the deck , nothing happens , but I still have to push the reverse awareness button to go backwards. The switch seems fine nothing loose or visibly worn.
I have a TG 1860 about 7 yrs old, if you hit a bump the mower disengages and you have to hit another bump or wait @5 minutes and it will reengage. The engine dead man switch works correctly , what type os switch/sensor am I looking for.
My front end loader works fine for a while then does not want to raise or lower properly. I can rotate the bucket normally and the hydro fluid level seems fine. I have to raise it by just barely touching the control arm , and then it has no power to lift.