Honda BF115A, BF130A Outboard Motors Shop Manual., Page 130Get this manual
HONDA 5) When the fuel pressure is outside the specified standard pressure, check the following
-When fuel pressure is higher than standard pressure: Check the pressure regulator return hose for kinking or restrictionsCheck the pressure regulator for proper operation (Inspection: 5-46)-When fuel pressure is lower than standard pressure: Check the pressure regulator for proper operation (Inspection: 5-46)Check the fuel filter (high pressure side) for clogging (Replacement: I?5-47)Check the fuel pump unit (Inspection: 5-48)6) After check, replace the sealing washers with the new ones and tighten the service check bolt to the specified torqueTORQUE: 12 Nm (1.2 kgfam, Ibf-ft)