Rinse your Honda outboard motor thoroughly

2026-05-28T08:06:00.000Z

Rinsing your outboard motor after a trip at sea is an essential step to maintain its proper functioning over time.In this videowe present the case of a Honda BF150But the basic principle remains the same on smaller or larger engines.

The goal is simple:show how to properly rinse a Honda engine with fresh waterwith simple methods to implement, depending on the situation and the desired rinsing level

Why rinse your Honda engine after a sea trip?

After a sea navigation, flushing helps better preserve the engine and cooling system components. It's a simple but important operation for maintaining your boat in good condition.

A good rinsing especially helps to better preserve:

the thermostats
the anodes
the cooling system
and more generally the overall condition of the engine.

The 3 methods to rinse a Honda outboard motor

This presentation demonstrates three main methods for effectively rinsing a Honda outboard motor.

The integrated engine flushing kit

It is the simplest, fastest, and quietest method.

The principle is to connect the water hose directly to the filling cap connection on the engine side The fresh water then flows through the engine for flushing.

The key point to remember

With this method, the engine must remain off.

This is a key point: do not start the engine when rinsing has been completed with the integrated kit.

2. Flushing with ears

Second possibility: use rinching ears located on the engine's islands.

This method allows rinsing engine running which can be interesting in some cases, especially when the engine is cold or when the rinsing has not been done for a while.

Running the engine also helps to warm it up, which can aid in dissolving the salt better.

The correct order to follow

With the ears, you always need to:

open the water
then start the engine.

This point is essential to perform the rinsing under good conditions.

3. The rinsing in a water tank

Third method: rinse the engine in a large tank filled with water.

The engine is lowered into the water then started. This solution provides an alternative way to rinse the engine with fresh water.

The point of vigilance

In this case, you need to monitor the water temperature to avoid poor cooling or engine overheating.

Use a product like Stop Salt as a supplement

The video also demonstrates the use of a product like this Stop Salt published with a system automix.

The goal is to help dissolve salt more effectively in the engine. This solution can be beneficial before a long period of inactivity or at the end of the season.

This supplement does not replace rinsing but can enhance maintenance when you want to go further.

Essential points to remember for properly rinsing a Honda engine

Here are the most important points to keep in mind:

Never start the engine with the integrated flushing kit.
With the ears, always open the water before starting
after rinsing with the kit, remember to properly tighten the fitting
On a hot engine, a few minutes may be enough
On a cold engine, it is possible to let it rinse longer.

Which method should be chosen for flushing a Honda engine?

The choice mainly depends on your usage and your current needs.

The integrated kit suitable very well for a simple, quick, and silent rinse
The ears allow engine flushing while running, useful for warming up the engine.
The water tank represents another alternative, provided to stay attentive to the water temperature.
The Stop Salt can be used as a supplement when a more thorough rinsing is desired

The essential is to use an appropriate method and to maintain a regular maintenance routine.

Honda Engine Flushing: a simple step to better preserve your boat

Rinsing a Honda outboard engine is one of the simplest maintenance tasks to perform after a sea trip. Using one of the three methods presented, you can perform a clear, convenient, and engine-specific rinse.

Whether using the integrated kit, the ears, or a water tank, the important thing is to follow the correct method and the points of caution highlighted in the video.