Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 472Get this manual

BIGFOOT GEAR HOUSING
4Rotate drive shaft to 10 revolutionsThis should properly seat forward gear tapered rolier bearing
5Install components as shown

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