1995 Johnson/Evinrude Outboards 40 thru 55 2-Cylinder Service Repair Manual P/N 503148, Page 27Get this manual
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High Performance engine, when used for high performance, requires 50:1 fueloil mixtue in the fuel tank along with the VRO systemIf the VRO system is not used, 25: fueloil mixtue is required in the fue