@Bruce Where did you order the part from? I went off an online store.
From RMT Equipment (used to be Sound Tractor) in Everett. Kubota dealer with a parts department.
NOTE: they just called me back to tell me that the -73010 thermostat was discontinued by Kubota, and they're trying to figure out what the replacement is. They're supposed to call me when they have the answer.
In the interim, I went to the interwebs, searched for "Kubota 73010 discontinued" and rapidly found that the current part number is 15321-73016. That "appears" to be a 180F thermostat, where the old one was apparently a 160F thermostat.
I may order a -73010 from one of the many online sources that claim to have one in stock, and the -73016 when RMT figures out that's the current model. Stay tuned...
Bruce
debonAir. thanks for the tip on the holes. I'll look at the one that comes out and make sure the new one has the same holes.