Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 20Get this manual

MAINTENANCE
Gear Case Lubrication
Gear Case Lubricant Capacity
Gear Case Ratio

Capacity
6.6 fl oz (195 mL)

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