tractorworks, if you don't have this on your 725DT6 I recommend you order one from your Grasshopper Dealer (have them verify this is the correct one). This will help keep debris from making its way to to the radiator screen!
You'll need to remove the LH Dash Cowl, simply unscrew the (2) Bolts holding the panel on - there are round plastic grips that you can loosen by hand (unless Paul Bunyan tightened them @ the factory!) You will then be able to see the Fuse Box (#11 in one of the attached diagrams), simply remove...