Stormin Mormon wrote, on Fri, 12 Dec 2014 09:52:25 -0500:

Some engines have a low oil shut down DAMHIKT.

That's a good point.
I never *added* oil either!

I'm still on the line with Generac support (they couldn't
find the model at first).

They're sending me "the manual", but I asked them whether it's
1. Owners Manual & Maintenance
2. Parts Manual
3. Wiring Diagram
4. Troubleshooting Guide
5. Service Manual
And, whether it contains the transfer switch information.