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Charles, Marine Mechanic
Category: Boat
Satisfied Customers: 3313
Experience:  US Navy (Ret) Certified Mercury Marine Tech with over a decade of repair experience.
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Have 2011 Yamaha F150TXR with 130 hours on it. Run in salt

Customer Question

Have 2011 Yamaha F150TXR with 130 hours on it. Run in salt water. Do I need to replace water pump and thermostat. Manual says replace water pump every 3 years or 300 hours. Which controls time elapsed (3 years) or usage (300 hours)?
Preston Fowler
Submitted: 1 month ago.
Category: Boat
Expert:  Charles replied 1 month ago.

Hello, my name is***** will assist you.

Expert:  Charles replied 1 month ago.

The basic rule of thumb for salt water is that it cuts the time in half. These items are essential to the life of the engine, so I personally would do them yearly, no matter what the book says. When I worked on salt water boats, this is what we did in the shop as well.

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