Got it. That makes more sense.
I have a laminated instruction sheet zip-tied to mine showing the proper sequence. It's as follows:
1. Turn off the large main power breaker at the top of the circuit panel
2. Turn off the 240 circuit labeled "welder."
3. Plug the power cable into the generator and then into the welder's plug
4. Start the generator and let it warm up for a few minutes,
5. Turn on the "welder" circuit breaker to power the house.
Shut down is similar, but in reverse order. Shut off the generator, completely unplug the cord, turn on breakers, turn on main.
I did this in case we had an outage when I wasn't home. My wife can do it easily with our electric start generator. I make sure she practices while I watch to be sure.