Im not sure about the electronic fuel shutoff switch on the pump. The fuel tank switch is a manual toggle. I am curious to see what this issue is. I have a total of 3 Diesel Z Masters. This is the first one I bought at 25XXX Hrs...the other 2 are juuuuust at 1000 hrs. Im good with the maintenance intervals on all filters and oil.....im just curious as to what it is. It just stinks, because all my other machines got powerwashed, fluids changed and theyre stowed for winter.