Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 149Get this manual

CYLINDER BLOCK AND CRANKCASE
8Disassemble the oil pump

- Bolt (2) M6 20 mmCoverO-Ring SealRotorOuterRotorInnerPin

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