1997 Johnson/Evinrude EU 25, 35 HP 3-Cylinder outboards Service Manual, Page 255Get this manual
NO OIL Circuit
1Turn the key switch to ON positionMove the float to position At positionthe gauge NO OIL light should turn onIf 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 "8", together with jumper wire