Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 146Get this manual

CYLINDER BLOCK AND CRANKCASE
Powerhead Disassembly
1Remove bolts from seal housing2Use soft face hammer to loosen oil seal housing

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