1998 Johnson Evinrude EC 5 thru 15 HP Four Stroke Service Manual, Page 64Get this manual
Description of Fuel SystemAll Models
sumedIt controls engine speed and power output by varying the intake charge densityTo react correctly to wide range of operating conditions, the carburetor has multiple fuel mixing circuits
W 2The carburetor meters and distributes the fuel con-
1The fuel pump is of the diaphragmdisplacement type and is operated by cam lobe
Mixture enrichment for cold starting is controlled by either choke or fuel primer solenoid
Fuel Pump Servicing9.915 (305cc)
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 pump