1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 70Get this manual
fuel Pump Servicing r:;l Before replacing suspect fuel pump, remove and clean the LJ fuel filter and install new filter elementAlso remove the fuel line from the fuel tank and blow through all passages and lines ith low-pressure, compressed air to be sure they are openTh is may be the cause of inadequate fuel delivery, and if so, would eliminate unnecessary replacement of the fuel pumpIf this procedure does not correct the trouble, fuel pump is probably malfunctioning and should be replaced
To prevent excessive fuel spillage, disconnect line connector at motor before disassembly
ill motor and squeezing primer bulb until definite resistance is
felt in bulb
After servicing, check for leaks by connecting fuel line to
f21 lnstall new filter element, loosen screw and remove cover Do not lose small -ring from around center post or large -ring from outer edge of cover Wash filter element