“Hi Bob, When you say “remove the water temp safety switch and then the oil pressure safety switch,” did you actually remove these switches from the engine, or just remove the wires from each of the switches? Also, it’s important to note that your engine is equipped with senders and safety switches, so we need to make sure that you disconnected the switches, and not the senders. It’s also important to note that the safety switches are there to protect thee engine from damage, and they should only be disconnected for troubleshooting purposes, and only if you have a method of verifying oil pressure (a mechanical gauge), and engine temperature (a non-contact infrared gun). You could indeed have a safety switch that is malfunctioning and causing this behavior from the generator, but it could also be a couple of other things causing the trouble as well. If you are able, please call our Seattle headquarters during normal business hours and ask to speak to Scott Dyball and he will be happy to help you troubleshoot the problem further. Thank you, Northern Lights team”

The seawater and raw water is the same pump. The only other water pump is the fresh water circulating pump. The indication for the need to change is if you see any water dripping out of the pumps opening, which means its seal is starting to leak.