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Old 03-19-2018, 08:58 AM   #8
Ski in NC
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City: Wilmington, NC
Country: USA
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 5,403
Most have a coolant temp, exhaust temp and low oil pressure switches. Each switch has two terminals and when in run mode, the contacts within are closed. All three form a loop, so if any contact is lost, fuel solenoid lets go. One switch at a time, unplug both wires and jump them together. Start with oil press sw which is near oil filter. Next do coolant sw which is above and near coolant pump pulley. Exh sw uses screws and tends to be more reliable. Can also be a fuse in the box or fault in remote switch.
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