Geeze, you didn't give us a chance to answer, we do go outside once in a while to, among other things, run our tractors.
On the LK which I'm fairly certain is the same set up as mine, you disconnect the hoe and the hoe's hoses from the rear of the machine you then unhook the hose on the diverter block that returns from the hoe and unhook the hose connection that goes to the hoe and plug into the diverter block to complete the cuircut, it is a single pump and cuircut on the LK.
Your manuals should show you this? Dealer should've walked you through this, a little confusing the first time through.
You do not change the valve on the diverter block.
Joel