Welcome to orangetractortalks yeah the tractor is basically the same as the L-185 and it has the Z851 which is very close to the Z751 that was used in the L-185. I used the L-185's parts, operators and Work Shop Manual for the L-185 when I had mine. For instance the clutch package was a direct swap out for the L-185 as the clutch on mine went out at 700 hours and I split the tractor and took the parts and found the part number for the pressure plate was the same. So I simply ordered everything and it came in and fit perfectly.
If you want the parts manual you can download the L-185 manual from the link below. I donated a copy of this manual and it is the one I used. Just click on the link below.
Man that tractor is the spitting image of my old tractor except mine had a after market front end loader. I really would have loved those weights that are on the front tires. On the tires your best bet is to actually check with the nearest local ag tire dealer as a lot of the time in a couple days they can get the rear tires without a problem. The front tires are generally stocked right at the dealers.