Flushing Instructions Included In Outboard Manual

Most new Outboard engines have the flushing port as customary equipment. But most of us don’t really understand the distinction between the flushing ports of the various Outboard engines. Here, I will give you 3 engine examples.

The Honda Outboard manual states: “Thoroughly clean and flush the outboard motor with fresh water after operation in dirty water or salt water.” Honda recommends using the flush port connector on the side of the engine for flushing and the emergency-stop switch clip be removed so there is no chance of the engine starting while you’re near the propeller.

The Honda flushing instructions are simple. You first disconnect the port connector, then connect the garden hose to the flush port connector, turn the water on and let it flow through the engine for at least 10 minutes. Detach the garden hose and reconnect the port connector as soon as you flushed the engine.

If you have a Suzuki Outboard, there are a couple of techniques to flush your engine. First, buy an ear-muff style flusher and second, utilize the flush-plug adaptor on the rear of the engine cowling. With the ear-muff style flusher, to get enough water to flow Suzuki recommends turning the garden hose on so as to loads of excess water flows out from around the rubber cups. It’s best to detach the propeller before turning on the engine at idle speed for several minutes and then turn the engine off and detach the hose and flusher.

With the flush-plug adaptor, simply remove it and install the garden hose into that port and turn on the water. You don’t need to start the engine but for at least five minutes, allow the water to flow. Remove the hose and attach the plug when you’re done. It’s easier and safer than using the first method.

For Yamaha Outboard, its flushing instruction states: “Perform this procedure right after operation for the most thorough flushing.” and “after shutting off the engine, unscrew the garden hose connector from the fitting on the bottom cowling.” Fasten the garden hose, turn on the water, and let it flow for 15 minutes. The Yamaha Outboard manual gives a warning: “CAUTION: Do not perform this procedure while the engine is running. The water pump may be damaged and severe damage from overheating can result.”

To thoroughly understand your Outboard engine including its flushing instructions, take time to read your owner’s manual if you still have it. If you don’t, then you could always find a replacement online or with your local dealer. You’ll be surprised of the many things you haven’t known about your beloved Outboard machine.

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