Back a year or two ago, someone was using two JINMAS and one DF for commercial yard work. mostly contract mowing and new construction yard installs. THEY stated everything had been working out quite well. the DF was the 1st purchace and had way over 1000 hrs and the 2 JINMAS were bought later in the same summer. His regards were that they (the tractors were all holding up quite well.) I read this on a board about 1~2 years back and do not remember the person who posted it, I think they were after something for one of them...
In anycase mine works nice and hard! I have a Jinma 284 and pull 6' box and 5' finish (though it would pull a 6' finish or rough cut in level ground for long term durrability and the fact that width of the tractor is slightly less than the 5' anyhow the 5 foot stuff will be very easy on the 284 size.) I also have the inport back hoe, and it works but would not make a great commercial machine. good for tree planting up to a size of problaby 15' high and 5" in dia max. any bigger tree I would sugest a diferent method. the back hoes only are good to about 4' effecniently and 5' max for laying wires and such. any deeper and the back hoe is too slow. anyhow for wires and light sprinkeling yard watering installs the better method would be a trencher. the hoe is gret to get into tight spaces but you acn't do much with the dirt then... the swing of the boom is probably 120 degrees but the last swing bit is hard to get out of it.
For a tiller they will run a 5' nicely of the 284/254 size. but you have to be in LL1/LL2/LL3 dependingnon ground conditions.
Mark M
JM 284, FEL, HOE, 5' RMF, 6' box, 4' tiller, & dump trailer.