Agree again, read the manual CAREFULLY. Many times they are written in a language which only approximates
English and they are poorly organized.
Ask questions here - there is SO much information available from some very experienced people, and it is free.
Vibration loosens all kinds of things. Whenever something gets loose, I replace the standard nut/lock washer with a Nylock nut. They're available in metric and they don't fall off.
Grease EVERYTHING frequently, and then go back and grease it again. Sometimes there are grease fittings on the tractor or accessories which aren't in the manual. Friend of mine bought a $2K+ stump grinder, it was never greased at the factory and the expensive gearbox was totally dry and there was no notice that the "Gearbox shipped dry, add oil before use!" A quart of SAE 90 fixed that, vendor got a somewhat testy note - labels cost maybe $1 a thousand, the gearboxes are *considerably* more expensive and of course they would not have covered it under warranty since running it dry is abuse.
Extra stuff to drag around - lots of clevis pins, they're cheap at Tractor Supply and they are constantly falling off with little or no provocation. Same for the turn signal/flasher lenses. Every time I even get near brush, one of them falls off. Dealer wants $12 each, TS is $1.29 or so, I've even picked up a few at the local flea market for fifty cents.
We have Cogon grass here (can't kill it!), the fronds clog the radiator so I carry a long skinny brush to clean the guard and radiator periodically.
Spring loaded pressure tire gauge came off eBay, under $10. I did have one tire on which the valve stem was crudded up from the tire ballast, couldn't add air or measure pressure. A little imaginative cussing fixed it.
I have a set of Pat's quick connects, one or two spare top links is a good idea, they are not expensive. Be sure you measure the width of the sleeve, sometimes the sleeve is too long and won't fit into the bracket on the tractor. A session with a bench grinder fixes that. Be aware that you CAN bend a top link, so having (but not necessarily carrying) a spare is a good idea.
Mounting a fire extinguisher somewhere isn't a bad idea, the problem is finding a protected spot that you can still get to.
As to a gun rack, in some places that isn't so much a political statement but a necessity. Most wildlife promptly goes a'running at the sound of a tractor, a rattlesnake might not. The snake can't hurt the tractor, but it can hurt you. Of course running it over with the bush hog usually adjusts its' attitude pretty well.
Gun rack . . . went to a trade convention a couple of weeks ago, all space-related businesses. (We're near KSC.) Part of the "swag" (and "swag" is what often makes these shows worthwhile) was a toy light saber which lights up red when you press the button. Dear Bride promptly appropriated it and now wants to get a gun rack for the rear window in her Subaru Forester and put that in it. Well she WAS in the army once, so I guess it is OK.
Best Regards,
Mike/Florida