Direct rear tongue weight on 2007 kubota rtv 900

[camjohns]

I am curious about the rear tongue capacity. If I were to place weight directly on the 1.5 inch receiver hitch without the use of a trailer. I have a snowex salt spreader that I am wanting to use that is going to mount into the receiver without any wheels for added weight support. The total weight will be approximately 600lbs and I am wondering if that amount of weight will work for my Kubota.

here is a link for what i am looking at, toward the bottom you will see the mounting options that they give. I know the bed mount would work fine, but am wanting salt to fall closer to the ground versus the height of the bed.

http://www.snowexproducts.com/product/drop-pro/

I would appreciate your feedback. Thank you!