1990 Johnson Evinrude "ES" Cross V 88 thru 115, 150 thru 175 Service Repair Manual, P/N 507874, Page 67Get this manual
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Component Servicing Any time that the VRO oil supply line has been disconnected from the engine, you must run 100:1 fueloil mixture in the fuel tank for period of time sufficient to verify oil consump