How much mower is too much

[Jerome]

I have a line on a 2000 Buhler Y750R Finishing Mower (72") is that too big for my Kubota L245DT (25hp) Thanks to all

 

[roxynoodle]

I'm going to say you can probably use that mower. I'm using a 5' finish mower on an 18 hp Yanmar and have not had any problems with it at all. If you are going to buy a rotary cutter then I'd go down to a 5' for your tractor.