1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, Service Repair Manual P/N 507875, Page 429Get this manual
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COA2478
COA2480
dLubricate O-rings of check valve to be tested and install valve in OMC Tester PIN 390063 Torque valve to 50-60 inIbs(5-7 Nm)Use Stevens Pressure Tester NoS-3