1998 Johnson Evinrude EC 50 thru 70 HP 3-Cylinder Service Repair Manual P/N 520208, Page 23Get this manual
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High Performance Any engine, when used for high performance, requires 50: fueloil mit in the fuel tank along with the VRO systemIf the VRO system is not used, 25:1 fuel oil mit is requ ired in the fue