Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 201Get this manual

3Install seal onto water tube Propeller Shaft Reassembly
1Slide clutch onto propeller shaft

53024Seal

a 4Secure water tube to pump base with retainer and screwb a
a Sliding Clutch Short End (FORWARD Gear Side) Hole (must align with slot) Slot

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