1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 35Get this manual

GENERAL INFORMATION
6Flo-Torque Drive Hub Propellers Install forward thrust hub, propeller and propeller nut onto the shaft
aForward Thrust Hub b- PropellerPropeller Nut 7Flo-Torque II Drive Hub Propellers Install forward thrust hub, propeller, replaceable drive sleeve, rear thrust hub and propeller nut onto the shaft

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