[Uhehner]

There are four ways to have an automatic shutdown. The Normally Closed Exhaust Temperature switch must open. The NC Water temperature switch must open. The Normally Open oil Pressure switch must close with pressure when the engine runs. If it opens the engine stops. Lastly the  NO Over Speed sensor must close. Look at the schematic. One clip lead can bypass the first three switches that are in series . Like I said, the usuaual failure is the oil pressure switch followed by a broken lead on a sensor. Hope this helps.  Capt. George