Yamaha - Water Pump Repair Kit - Cooling System - 61U-W0078-03-00

Overview

If you’ve spent any time around outboards, you know the water pump isn’t something to gamble with. Once cooling flow starts to drop off, it’s only a matter of time before bigger problems show up. This kit is what I usually reach for when doing routine maintenance or fixing weak water pressure issues. It’s a solid way to keep your motor running cool and avoid getting stuck dealing with overheating out on the water.

Key Features

• Complete Service Kit – Includes the essential components needed to restore proper water pump function.
• Reliable Cooling Performance – Helps maintain consistent water flow to keep engine temperatures in check.
• Marine-Ready Materials – Built to handle sand, salt, and debris commonly found in real boating conditions.
• Direct Fit Components – Designed to match factory specifications for straightforward installation.
• Preventative Maintenance Solution – Ideal for routine service intervals to avoid unexpected cooling failures.

Engine & Boat Compatibility

Compatible with a wide range of Yamaha outboard engines using standard water pump systems. Commonly used on small to mid-range horsepower outboards found on fishing boats, skiffs, and utility vessels. Always verify fitment with your specific engine model.

FAQ

Q: What are signs my water pump needs repair?
A: Weak or no tell-tale stream, overheating alarms, or higher engine temps are the biggest warning signs.

Q: How often should I replace my water pump components?
A: Most boaters service it every season or every 100 hours, depending on use and water conditions.

Q: Can I run my engine if the water flow seems low?
A: It’s not recommended—low flow can quickly lead to overheating and engine damage.

Q: Is this something I can install myself?
A: If you’re comfortable dropping the lower unit, it’s a manageable job. Otherwise, a shop can handle it quickly.

Q: Does saltwater use affect the water pump?
A: Yes, salt and debris can wear components faster, which is why regular maintenance is important.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

• Supersessions
  61U-W0078-02-00