1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, Service Repair Manual P/N 507875, Page 27Get this manual
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High Performance Any recreational engine, when used for high performance, requires 50: fueloil mixture in the fuel tank along with the VRO systemIf the system is not used, 25: fueloil mixture is requi