Per Kubota’s docs, the L4802 has a “live independent PTO with hydraulic clutch”. Same as the L4701 HST (which is what I have).
There are some tractors that have PTO’s that are tied into the same gear train that runs the wheels and don’t have a built in over run clutch. For those type tractors, an implement that has a good bit of inertia, such as a bush hog, will push the tractor despite the clutch being disengaged. The Ford 9N and Farmall H I operated prior to buying my L were both like that. Tractors with those type PTO’s need an external over run clutch to safely operate bush hogs and any similar implements that combine driving while running the PTO with something that has significant inertia.
For your L4802, what the PTO is doing has nothing to do with what the wheels are doing. The PTO is engaged with the engine at idle. To disengage normally (non-emergency), reduce engine to idle and let the PTO wind down before disengaging. That’s all you need to do to “help” the PTO brake.
If you’re trying to add length because the Pat’s is going to make your implements’ PTO shafts too short, it will provide some additional length. Other than that there’s no practical reason to add an over run clutch to the PTO on a L4802.
I would suggest you check the overlap on your PTO shafts after installing the Pat’s to determine if any of them are actually too short and if yes, decide if you want to add an over run clutch, PTO extender, or replace the shaft. YMMV…
