1997 Johnsoon Evinrude "EU" 50 thru 70 3-Cylinder Service Repair Manual, P/N 507266, Page 220Get this manual

1997 Johnsoon Evinrude "EU" 50 thru 70 3-Cylinder Service Repair Manual, P/N 507266, Page 220

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Install in vacuum testerPump out to 3-6 inches (76-127 mm) Hg and see if vacuum holdsThen pump out to 15 inches (381 mm) Hg and checkIf the gearcase fails to hold on either test, put lubricant around