Re: evinrude 50HP keeps going into safe mode at full throttle
Disconnect the engine harness 6 wire connector, there is a tan wire going to this. Disconnect the tan wire to the temp. sender on the head. There is a blocking diode between these two points. With an ohm meter, ckeck the continuity between these two points. There should be continuity in one direction, but not the other. The diode is located 10 1/2 inchs' from the 6 wire connector. Here is what the OMC manual say's about this. If the engine goes into SLOW repeatedly, or into Slow without a warning signal, check the diode. I think that discribes your problem. If it were a power pak problem, it would not go away by disconnecting the sensors. Let us know what you find.