1993 Johnson Evinrude "ET" 90 degrees CV Service Manual, P/N 508285, Page 64Get this manual
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Install gearcase pressure tester to
pulse hose fittingPump to 15 PSIPump holds pressure?
Slowly pump gearcase testerInspect for escaping air Does pump click several times with each stroke of tester?
Hold pump in normal running positionCover fuel outlet; rapidly remove pressure hose from pulse fittingPump should not clickDid pump click?