1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 91Get this manual
Primer System Servicing Functional Test 1Start engine and allow it to reach normal operating temperatureSet engine speed at 2000 RPM2While engine is running, push key in Engine should run richly and drop 1000 RPM3Remove air silencer assemblyIl 4Remove primer hose from any primer fitting that you suspect is cloggedConnect '8 in1.0clear vinyl hose between the fitting and syringe filled with isopropyl alcohol
5Press lightly on the syringe If fluid moves through the fitting, it is okay If fluid does not move through the fitting, clean with OMC Cleaning Tool PIN 326623Solenoid Removal f61 1Remove the pump bracket mounting screws and move it aside without removing any hoses2Remove the two bracket screws and remove the primer solenoidCarefully remove the three hoses3Remove the terminal screw and remove the purplewhite lead