Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 129Get this manual
Fuel Pump
Perfect Seal (92-34227-1)
B =TO CYLBLOCK
=TO VAPOR SEPARATOR FUEL INLET FITTING
SPECIFICATIONS Fuel Pump Pressure W.O.TMaximum10 PSI Normal6-8 PSI MinimumPSI Fuel Pump Pressure Idle Normal2-3 PSI MinimumPSI