Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 192Get this manual

GEAR HOUSING
7Remove gasket (a)
BSupport water pump in vise and remove drive shaft oil seal (b) using puller assembly (c) with suitable jaws (d)56419

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