1996 Johnson/Evinrude Outboards 8 thru 15 Four-Stroke Service Manual, Page 60Get this manual
Description of Fuel SystemAll Models
1The fuel pump is of the diaphragm-displacement type and is operated by cam lobe
rn WIt controlscarburetor meters and distributesbythe fuel con2The sumedengine speed and power output varying the
intake charge densityTo react correctly to wide range of operating conditions, the carburetor has multiple fuel mixing circuitsMixture enrichment for cold starting is controlled by either choke or fuel primer solenoid
Fuel Pump Servicing9.915
Before replacing suspect fuel pump, remove and clean the fuel filter and install new filter elementAlso, remove the fuel hose from the fuel tank and blow through all passages and hoses with low-pressure compressed air to be sure they are openThis might be the cause of inadequate fuel deliveryIf this procedure does not correct the trouble, test the fuel pump30393