1992 Johnson Evinrude "EN" 9.9 thru 30 Service Manual, P/N 508142, Page 62Get this manual
In-Line Fuel Filter ServicingCommercial Models Replace the filter element (or assembly) every 100 operating hours or once each season, whichever comes firstf51 1Unscrew in-line filter cover It is not necessary to remove fuel hoses to service filterf51 2Clean filter canister collected particles
and shake filter element to remove