Honda B75K2-B75K3 Outboard Motors Manual., Page 27Get this manual
Inspection Oil pump 1Inner-to-outer rotor clearance
Measure the inner-to-outer rotor clearance with feeler gaugeIf the clearance exceeds the service limit, replace the oil pump as an assemblyFor the service data, see page 55Fig3 5
Outer rotor Inner rotor
0) Feeler gauge
2Pump body-to-rotor clearance Put pump gasket on the pump body and measure the pump body-to-rotor clearance with feeler gaugeIf the clearance exceeds the service limit, replace the pumpFor the service data, see page 55
Fig3-96 Rotor Pump body
Pump gasket
Clearance
3Check valve seat Check the valve seat surface for accumulation of dirt or dustAlso check the seat surface for scores or scratches, and reface it with an oilstone or replace the seat if necessary-