Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 156Get this manual
Fuel Management Assembly Removal Fuel system must be bled off prior to removal of fuel system components
3Disconnect water separator sensor lead4Disconnect External electric fuel pump harness connector
1De-pressurize fuel system by wrapping clean cloth around fuel pressure port valve (STARBOARD fuel rail) and depressing valve core
aSensor LeadHarness Connector
5Disconnect internal electric fuel pump harness connector6Remove sta-strap securing air temperature sensor harness to fuel hose55923Starboard Fuel RailFuel Pressure Port