1998 Johnson Evinrude "EC" 90, 100C, 105C, 115, 150, 150C, 175 60 deg. LV Service Repair Manual, P/N 520210, Page 72Get this manual

1998 Johnson Evinrude "EC" 90, 100C, 105C, 115, 150, 150C, 175 60 deg. LV Service Repair Manual, P/N 520210, Page 72

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This chart determines the condition of the fuel pump portion and air motor portion of the VRO pumpConnect gearcase pressure tester to VRO pulse hose fittingPressurize to 15 PSI(Air motor piston travel