1998 Johnson Evinrude "EC" 25, 35 HP 3-Cylinder Outboards Service Manual, Page 249Get this manual
NO OIL Circuit
[] 1Turn the key switch to ON position Move the float to position At positionthe gauge NO OIL light should turn on If the NO OIL light does not turn on, disconnect the tank pickup 3-pin connectorConnect the engine harness tanyellow lead, terminal "A", and black lead, terminal liB", together with jumper wire If the NO OIL light turns on after connecting the two terminals together, repair or replace the oil tank pickup assembly If the NO OIL light does not turn on after connecting the two terminals together, troubleshoot the tanyellow and black circuits for an open in the engine harness or the instrument harness2Turn the key switch OFF and reconnect all circuits disconnected during these tests