Risking the dumb question.....is the threaded hole for the water heater the plug just below the radiator hose that looks like it's part of a thermostat housing?
Thanks for the information guys. I located the 2 relays, but do not see where the wires go Hopefully this weekend I will have time to trace them and remedy the problem.
Newbie here. I recently bought a 543B. It is difficult to start. I did locate the glow plugs. All are treaded on the end, they have connectors between them, but there isn't any wires connected to the glow plugs and I don't see anything close that looks like it should attach to one of them. Any...