I have had a JD 513 for a year,now I too like the Green Stuff,my dealer sold me this 513 rotary cutter when I bought the JD 4400 hydro,I found out this 513 is NOT ah heavy built product.Go look at a King Kutter brand or a Woods brand.The 513 is alright for weeds but not brush,and is way overpriced. It is smooth running but the metal it is made of is paper thin,if you back into a small saplin,or stump or rock it will bend very easy,I had to take mine to the a local welder after about 2 weeks and have 3/8 re-enforcement welded on the back part of the deck,the sides could use it some time although not near as badly. When I bought my tractor I bought green,but I should have been more critical of my purchase when I bought the 513.I have a JD 660 rotary tiller,fine piece of equipment,I have the model 45 back blade,its ok. I have the new JD post hole digger which I have not used yet. Believe me as you well know you pay a premium for JD green. The 513 has been my biggest dissapointment,it is paper thin in the housing,bottom line........ Go look at a "King Kutter" go look at a "Woods" you can get a lot more value for your money and heavier piece of equipment for your money if you buy one of these,I probably should have had the MX series.I was on the jplan.com board and another poster commented about how he "marveled at the amount of dings and dents" on his 513 rotary cutter,after very little use.I guess they would be alright if you were cutting strictly grass and weeds in a smooth enviroment.If I have to get another rotary cutter I will buy a "Bush Hog" or "woods" etc and paint it green to match the tractor.
Now listen to this:
My JD 4400 after 175 hours of operation it had to go to the shop:
1. Differental lock failure.
2.Had to replace the hydro tranny because of the metal shavings from the differental lock failure.
3.Replaced the starter.
4.Replaced the fuel pump.
5.Leaking hydraulic fluid from the top of the rear end.
John Deere service and warranty work was excellent,thank goodness this was covered under warranty.
A JD rep even called me and told me this was an embarrasment to JD to have so many things go wrong on a JD tractor.
I had a Mitsubishi "Beaver III" for 17 years it never went to back to the dealer 1 time and it seen it all. Just because it is green it is better,I do not think so.