Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 51Get this manual
Servicing Fuel Line ComponentsMariner 5 RemovalDisassembly
1Disconnect remote fuel line from engine 2Remove hoses (a) from fuel pump and remote fuel
4Inspect hoses and in-line filter for leakage damage, or deteriorationReplace components as necessary
Reassembly
1Insta ll components as shown and secure with clamps (a)
connectorNOTEThe fuel connector is non-serviceable partInspect for leaks or cracks, replace if required