Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 364Get this manual

Pump Drive Assembly aOil Pump
bRetaining Bolts (2)-r ings

dBushingDriven GearOil Pump (Installed)

Pump Drive System

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives