On my BX 25 I change that filter every oil change, good insurance. Had it plugged solid at 300 hrs. with black gunk. First time I changed the engine side filter I said to H** with this and I moved it down under by the booster pump. Even was able to use the existing hoses. The Kubota hose clamps suck. The ones that come with the replacement filter are heavier and easier to open and close. I also pinched off the hose w/needle nose vise-grips. I have 800 hrs on it now after 2+ years, so have changed every thing several times. Quickly learned the value of a 5 GL can pump for HY fluid. You can change the oil filter w/o removing the cowling if you get one of those filter wrenches that work with a ratchet wrench and long extension. Fits over the end of the filter with 3 fingers.
Ron