How often should you change impeller on Mercury outboard?

How often should you change impeller on Mercury outboard?

How Often Should You Change the Water Pump On Mercury Outboard? In most cases, you won’t need to replace the water pump unless the housing is damaged. Instead, replacing the water pump impeller every three years or sooner should avoid most water-pump-related issues and keep your outboard running in excellent condition.

Why do impellers fail?

Abrasive sandlike material can cause the impeller to wear out faster. Impellers can also wear out by becoming stiff and brittle due to the motor sitting unused for several seasons or being exposed to heat. Water lubricates the impeller, and if it’s run dry, the impeller can be ruined in a few seconds.

What are the symptoms of a bad impeller?

If your impeller fails, the pump can’t pump cool water to the engine causing your engine to overheat. If you catch that your impeller is failing early on, you might avoid major problems.

What happens when your impeller breaks?

Pieces of the broken impeller can end up in the heat exchanger or cause blockages in other parts of the engine. This can require major parts of the engine to be stripped down so these blockages can be cleared and the rest of the engine can be checked for small fragments of the failed impeller.

What happens if the impeller in backwards?

Pumps that have threaded impellers can unthread inside the casing when run in reverse. With tight clearances inside the casing, the impeller and shaft can act like a car jack on the pump internals. The impeller can be galled, casing damaged, thrust bearing, and mechanical seal destroyed.

What’s the 18-3239 water pump repair kit for Mercury?

Sierra 18-3239 Water Pump Repair Kit for Mercury, Mariner Sierra high-quality engine parts are designed to meet OEM specifications. For small gear case engines under 9.9 hp. Kit Includes: (1) 18-3039 Impeller (1) 18-3139 Impeller Plate (1) 18-7409…

When to replace a water pump impeller on a sterndrive?

bravo 3 xr cleaver diesel garmin raymarine smartcraft smartcraft connect tdi View all Water Impeller Repair Kits Water pump impellers are the most commonly replaced item on sterndrive and outboard engines. Impellers should be inspected for replacement once per year or every 100 hours of operation.

How often should I replace the impeller on my Boat?

Water pump impellers are the most commonly replaced item on sterndrive and outboard engines. Impellers should be inspected for replacement once per year or every 100 hours of operation.

What is an 18-3207 impeller kit?

Sierra 18-3207 Impeller Kit for Mercury Marine Engines Sierra 18-3207 Impeller Kit is an aftermarket replacement kit for Mercury Marine engines. All Sierra marine parts are manufactured to meet or exceed OEM requirements. For Use On Engine…