Yamaha - Water Pump Repair Kit - Cooling System Service Kit - 61A-W0078-A1-00

If you’ve worked on Yamaha two-strokes long enough, you know the water pump is one of those service items you don’t gamble with. The Yamaha Water Pump Repair Kit 61A-W0078-A1-00 restores proper cooling flow so your motor can run hard without overheating. It’s the kind of maintenance kit many techs install during regular lower unit service or before a long season on the water. Keeping the pump fresh means steady cooling pressure and peace of mind when you're running far from the dock.

Key Features

• Complete Water Pump Service Kit – Includes the essential components needed to refresh the outboard cooling pump.
• OEM Yamaha Fitment – Manufactured to Yamaha specifications for precise installation and dependable operation.
• Reliable Cooling Performance – Restores proper water circulation to help prevent overheating.
• Durable Marine Materials – Designed to handle high-speed operation and harsh saltwater environments.
• Routine Maintenance Solution – Ideal for scheduled service intervals to keep the cooling system working properly.

Engine & Boat Compatibility

P150 (1992~1996)
P175 (1994~1996)
P200 (1991~1996)
C150 (1996)
150~225 (1996)
L150~L250 (1996)
S150~S250 (1996)

FAQ

Q: How often should a Yamaha water pump be serviced?
A: Most technicians recommend inspecting or replacing the water pump components every one to two seasons, depending on usage.

Q: What are signs the water pump may be failing?
A: Weak tell-tale stream, overheating alarms, or fluctuating engine temperature can all point to a worn pump.

Q: Can sand or debris damage the water pump?
A: Yes. Running in shallow or sandy water can wear down the impeller and pump housing faster than normal.

Q: Is this kit typically installed during lower unit service?
A: Yes. Many mechanics replace the pump while the lower unit is already removed for routine maintenance.

Q: Is replacing the pump important even if the engine seems fine?
A: Preventative replacement helps avoid sudden cooling failures that could lead to serious engine damage.

• Supersessions
  61A-W0078-01-00, 61A-W0078-00-00
• Engine Application
  • P150 (1992~1996)
  • P175 (1994~1996)
  • P200 (1991~1996)
  • C150 (1996)
  • 150~225 (1996)
  • L150~L250 (1996)
  • S150~S250 (1996)