2008 Honda Aquatrax ARX1500T3/T3D factory service manual, Page 200Get this manual
FUEL SYSTEM (Programmed Fuel Injection)
PRESSURE REGULATOR
REPLACEMENT
Release the fuel pressure from the fuel hose (page 8-54)em'ove the fuel return hose quick connect fitting (page 8-54)Disconnect the pressure regulator vacuum hose from the pressure regulatorRemove the two mounting bolts and pressure regulator from the fuel hose joint
Remove the O-ring from the pressure regulator, Coat new O-ring with engine oil and install onto the pressure regulator groove