1997 Johnsoon Evinrude "EU" 50 thru 70 3-Cylinder Service Manual, P/N 507266, Page 85Get this manual
Inspection
1To test the solenoid windings, calibrate an ohmmeter on low ohms scale and connect between the purplewhite and black leads Meter should indicate 5.5 1.5 ohms2To test solenoid valve and seat: Lightly pressurize inlet fitting with alcohol and syringe With lever in run position, no fluid should enter inlet fitting With lever in prime position, fluid should come out both outlet fittings
3To inspect or replace internal components, remove the four solenoid cover screws