Hey,
Welcome to the forum!
Buddy Manning with Manning Enterprises on Hwy. 10 in Franklinton sells Yanmars...........He isn't what I would call a "dealer", but he can get parts and the tractors he sells are reasonable.......Honestly, his prices are too.......Even on his implements also..........I forgot what his number is though.............I'll get back to ya' with it.
He gives a 30 day parts warranty.
I know that you are looking for a dealer in LA.......BUT.........Liberty Tractor in Liberty, Mississippi sells Mahindra, Agco, and used "gray market" Japanese tractors..........I live near Livingston, LA and Liberty is about 80 miles from me.......Been there several times, but never bought nothin'......Very nice and professional place...................They recondition their tractors, as needed, and they do give some type of a warranty, but I don't remember exactly what............They also have/can get parts for anything they sell.
Matter of fact, I called them about a couple weeks ago on a YM3000..........They said they have one ready and the price is $5000.00............I don't know if they have sold it yet though..............Their number is 601-657-8255.
If I think of anything else, i'll let ya' know.
Travis