Fortunately, I was almost done cultivating the garden. And, aimed right at the gate. So I steered it up to the shop via the brakes. Sorta crawler like! Well, like my old Terratrac crawler without steering clutches, anyway.

The sun is beating down on the front of the shop this afternoon, so I will wait until morning to tear into it. Nice and cool and shady in front of the shop until 1 PM or so.

Any guesses what happened? The steering went rather 'mushy' then the wheel just spins. No jerks or bangs and I was in soft dirt, so nothing run into besides weeds. Nothing is visibly wrong, but the hood and nosecone are still on, so all I can readily see is the tie rods are all still OK.
Personally, I am thinking the pin which follows the worm gear pulled out of the yoke inside the steering box.
Further bulletins as events warrant!
Stan