dass
Are you looking for a rotary cutter? I will assume so. I have a 42" Bushhog cutter on mine. I tried a 413 JD (4') and found it to be to big for the tractor, weight was the main consideration. I mow some pretty steep stuff and with the 413 it made the front end to lite. I also think the TC-18 is a little under powered for the 4' cutter. Of course this depends on what you are going to cut. I only mow twice a year and the brush gets kind of heavy. The 42" Bushhog works great for me, it's not as heavy as the 413 and I can keep the frontend on the ground. I do have 160 lbs. on the front. I also think that by keeping the pto hp (15 on the gear drive and 14 on the hydro) in the middle range of the cutter it will do a better job.
Solo