Yamaha - Water Pump Repair Kit - F9.9, T9.9, FT9.9 Cooling System Service Kit - 682-W0078-A3-00

Overview

On these smaller Yamaha four-strokes, the water pump is everything when it comes to keeping the engine cool. If the impeller or internal components start wearing out, you’ll see it quickly—weak telltale, rising temps, or inconsistent cooling. This kit gives you everything you need to rebuild the pump properly, not just patch it. It’s the kind of maintenance that keeps these motors dependable, especially if you’re running shallow water or using them often.

Key Features

• Complete Water Pump Rebuild Kit – Includes impeller, gaskets, seals, and internal components for a full service.

• Restores Cooling Performance – Helps bring back proper water pressure and engine cooling efficiency.

• OEM Yamaha Components – Built to factory specs for fit, durability, and reliability.

• Ideal for Routine Maintenance – Recommended during scheduled service or when cooling performance drops.

Engine & Boat Compatibility

• F9.9 1996 & Older
• T9.9 1996 & Older
• FT9.9 1996 & Older
• F9.9 2004–April 2005
• T9.9 2004–April 2005
• FT9.9 2004–April 2005

FAQ

Q: What are signs the water pump needs rebuilding?
A: Weak water stream, overheating, or inconsistent cooling are common signs.

Q: Does this kit include the impeller?
A: Yes, it includes the impeller along with gaskets, seals, and other internal components.

Q: Should I replace everything or just the impeller?
A: It’s best to replace the full kit to ensure proper sealing and long-term reliability.

Q: How often should I service the water pump?
A: Typically every season or every 100 hours, depending on usage.

Q: Is this a difficult job?
A: It’s manageable with basic tools, but proper alignment during reassembly is important.

• Supersessions
  682-W0078-A2-00
• Engine Application
  • F9.9 1996 & Older
  • T9.9 1996 & Older
  • FT9.9 1996 & Older
  • F9.9 2004–April 2005
  • T9.9 2004–April 2005
  • FT9.9 2004–April 2005