1997 Johnsoon Evinrude "EU" 50 thru 70 3-Cylinder Service Manual, P/N 507266, Page 75Get this manual
This chart determines the cond ition of the fuel pump portion and motor portion of the pump
Install gearcase pressure tester to VRol pulse hose fittingPump to 15 PSIPump holds pressure?i
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?
PUMP Wait secondsUncover fuel outletPump should clickDid pump click?
STOP HEREAir motor housing is cracked or leakingRepa ir leak or INSTALL MOTOR HOUSING KIT