Thanks for the help I also think the one you found on ebay will work thankyou again. jimFrom what I found, a Werner 5215-34 would also fit. There is one of those on ebay right now for $184 brand new from a John Deere dealer, but I would reccommend that you keep an eye on ebay for a cheaper used one. I would'nt be surprised if you could find a good used one for less than $100.
Here's the link to the one on ebay:John Deere Blade PTO Clutch 180 185 LX186 HD75 GS Many | eBay
Good luck in your search!