1990 Johnson Evinrude "ES" 9.9 thru 30 Service Manual, P/N 507871, Page 71Get this manual
Electric Primer
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 ohms]
2To 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
3 To inspect or replace internal components, remove the four 4When assembling solenoid, back up screws in their holes to engage original threads and tighten securely