1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 349Get this manual
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Pump Drive Assembly b d
Pump Drive System
aRetaining Nut (2)Retaining Screw (2)MagnetMotion SensorCoupler BushingDriven GearBushingDrive Gear 90-824052R3 JUNE 2002
3E-4