Zd1511 oil pressure light on

[Whiskey Tango Farms]

Have a zd1511 zero turn with the oil pressure light on. I changed both the engine oil and hydraulic oil and all three filters and the oil pressure light is on constantly. I figure the next step is to replace the oil pressure sensor, but I have no idea where it is.
Changing the oil was fun poking around to find the location of all the plugs and filters, and the slow repeated steps to finally get all the hydraulic oil back in. (If someone knows a method to do this more quickly id appreciate it)
If you know other resources for diagrams and info please post that as well.

 

[Dave_eng]

Looking on Kubota.ca web site I see the following for the oil switch

Messicks web site
Messicks

and Coleman's web site will have same info.
After entering model, look in engine section for oil switch.

Dave

 

[lugbolt]

You can test the switch with a volt meter. And you can test the wiring by grounding the wire to the block. And, you can also screw a real mechanical oil pressure gauge into the port and see what the actual pressure is.