Just bought a small Nissan 5hp outboard (2-stroke)for the inflatable. In the old days we would flush the salt water out with the hose put up against the intake while running. Is it still nessesary? The motor will be used to putt around the marina, as a tender while anchored around S. Cal. Not alot of heavy use.
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I do not have that pleasure!
Bob: I don't have that pleasure, but it would seem that it would be a good idea. If it is going to sit around for a few weeks between uses, I'd think that the barnacles are going to grow and the salt would build up.
Bob: I don't have that pleasure, but it would seem that it would be a good idea. If it is going to sit around for a few weeks between uses, I'd think that the barnacles are going to grow and the salt would build up.
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Jon Bastien / H25 'Adagio'
Still a good idea...
but difficult to do on the Nissan 5HP. The water intake for this motor is right above the propeller- There's no way to use the 'rabbit ears' type flushing device. The only way to really flush these motors is to run it in a tank full of fresh water. HOWEVER, if you're willing to get a little wet in the process, I've had varying degrees of success by just holding the end of a hose up against the water inlet until I see water coming out the cooling exhaust... It isn't a thorough flush (since the motor isn't running), but it's better than nothing. --Jon
but difficult to do on the Nissan 5HP. The water intake for this motor is right above the propeller- There's no way to use the 'rabbit ears' type flushing device. The only way to really flush these motors is to run it in a tank full of fresh water. HOWEVER, if you're willing to get a little wet in the process, I've had varying degrees of success by just holding the end of a hose up against the water inlet until I see water coming out the cooling exhaust... It isn't a thorough flush (since the motor isn't running), but it's better than nothing. --Jon
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Tim Schaaf
Good question!
In theory you should do it, but I must admit to never having done so. I have had four outboards which have had anything from moderate to very heavy use in salt water, and never had any trouble. Of course, I do not leave the motor in the "down position", and I do check my zincs.
In theory you should do it, but I must admit to never having done so. I have had four outboards which have had anything from moderate to very heavy use in salt water, and never had any trouble. Of course, I do not leave the motor in the "down position", and I do check my zincs.
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Rick Webb
Check With a Mercury Dealer
I bought an adapter to flush my mine. Trouble with it was the outlet for the hose was right above the prop so that it would only work with the prop removed. A trip to the hardware store for a right angle adapter and a foot of vinyl hose and I am able to slip it on with the prop in place.
I bought an adapter to flush my mine. Trouble with it was the outlet for the hose was right above the prop so that it would only work with the prop removed. A trip to the hardware store for a right angle adapter and a foot of vinyl hose and I am able to slip it on with the prop in place.
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Bob O'Brien
Large Garbage Can
I filled a (clean) large garbage can with water from the hose, attached my Nissan outboard to the side of the can (getting a square or rectangular can helps so you have a flat side to attach the outboard to) and then ran the engine for a few minutes to clear out the salt and whatever else in it.
I filled a (clean) large garbage can with water from the hose, attached my Nissan outboard to the side of the can (getting a square or rectangular can helps so you have a flat side to attach the outboard to) and then ran the engine for a few minutes to clear out the salt and whatever else in it.
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Les Andersen
Flush
Bob, I have one of the 5hp Nissan 2 strokes you describe. Mine came with a brass adapter that essentially slips inside of a hose and is used to flush the engine. You can perminately attach the brass adapter to a short piece of garden hose to make it easier. Think the engine originally came this way. Look in your manual and it is listed as an additional part. It goes into a screw hole on the side and you can flush the unit without the engine running. If you cannot find the info I will look for the part number on mine. Good luck. Les s/v Mutual Fun
Bob, I have one of the 5hp Nissan 2 strokes you describe. Mine came with a brass adapter that essentially slips inside of a hose and is used to flush the engine. You can perminately attach the brass adapter to a short piece of garden hose to make it easier. Think the engine originally came this way. Look in your manual and it is listed as an additional part. It goes into a screw hole on the side and you can flush the unit without the engine running. If you cannot find the info I will look for the part number on mine. Good luck. Les s/v Mutual Fun
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Tony Z.
Ever try to work on a salted up outboard ?
I have had the unfortunate experience (a few times) working on heavily salted up outboards. You can't get them apart, the water jackets get clogged and the metal deterioriates rather quickly. A 5 year old saltwater motor (unless well maintained) is on it's way to being junk. On the other hand, I have seen motors over 30 years old like new that were mostly used in fresh water or regularly maintained I would agree that flushing out the engine is a good idea.
I have had the unfortunate experience (a few times) working on heavily salted up outboards. You can't get them apart, the water jackets get clogged and the metal deterioriates rather quickly. A 5 year old saltwater motor (unless well maintained) is on it's way to being junk. On the other hand, I have seen motors over 30 years old like new that were mostly used in fresh water or regularly maintained I would agree that flushing out the engine is a good idea.
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