I don't know if that manual includes the SU. Everything is the same except for the items I listed previously. I purchased an owner's manual for around $20. They are available also on eBay.
The rear tires have some cuts in them. I plan to mostly brush hog with it for now, so I'll see what I can get out of these tires. Once they go, I plan to replace them with 16.9x24's.
That covers a lot of models. I would think there is a shop manual that is more specific to your model and for less money. My guess is the SU version would be lumped in with the regular version. I don't think there's much of a difference but that's from memory of 30 years ago.
The only I&T manual I can find says, "Ford New Holland 2310 2600 2610 3600 3610 4100 After 1974 4110 4600 4610 Prior To 1984 4600SU 4610SU Prior To 1984 Tractor Manual".
My 4610SU is a 1987. Were there significant changes from 84 to 87?
ROPS was optional in 83 and I think it was standard in 87. Black stripe versus light blue stripe on older plus older has front side panel painted white. I am not aware of any mechanical differences. Rick B and SoundGuy are the Ford gurus.