1971 Johnson 125HP outboards Service Manual, Page 29Get this manual
of the difficulty, this procedure would eliminate unnecessary replacing of the fuel pumpIf this procedure does not correct the trouble, fuel pump is probably malfunctioning and should be replaced
REMOVAL OF FUEL PUMP AND FILTER
aDisconnect hoses from pump and filter assemblybTo remove fuel pump, remove two screws attaching pump and filter assembly to air silencer, and remove pump and filter assemblySee Figure22
CLEANING, INSPECTION AND REPAIR