There are several threads here covering this. I contributed to one of them. Search on 'rs1400' or 'yanmar tiller'.
But basically just put it on and see how it fits.
You might need a 'PTO extender' (or add a slip clutch to make the tractor's pto longer), since I expect the MF arms are longer than Yanmar's, or even an expensive custom pto shaft if the yanmar shaft is way too short.
Also Yanmar used a special upper link to make them lift without hitting the tires. On your larger tractor you probably don't need that, but it's described in one of my posts if you do. I think I used the word 'bridge' so combine that with tiller, in a search.
Good luck with this!