1999 Honda BF40

TD_Maker

Chief Petty Officer
Joined
Aug 31, 2005
Messages
564
Here is an update on my Dad's old pontoon with a very low hour Honda BF40 Outboard.

The boat spent almost all its life in a fresh water like in Kentucky...under a boat house. In fact, the boat had only been out of the water twice in 15 years...both times to perform routine maintenance when I was visiting from Florida. I replaced the impeller about 5 years ago. The oil had been changed several times...but it was always an adventure because everything was always done at dockside. My dad died in October and left the boat to me; so, I drove up to Kentucky and brought her back with me to Florida. I have not used at all since

Today I decided to get into the motor a little bit. I changed the oil, put new plugs in her, and changed the fuel filter. Then, I was going to tackle the lower unit and change the impeller again. I unbolted the lower unit (YES, even the bolt under the trim tab) and it would NOT DROP. I mean, it was like it was welded together. I broke out the rubber mallet and wooden block, and smacked the **** out of it. Nothing! So, remembering what I had read here on the Iboats forums, I lowered the motor and turned her over a few times. Finally I hear a "Clunk" and it finally fell out. I was happy about that.

I was more than surprised to find corrosion throughout the lower unit. Looked like the barnicles we see here in Florida. It all scraped off, and I was able to change the impeller witout incident, but I am wondering how the Old Honda is going to handle the brackish water we have here in Florida? Other than that, the motor looks almost new...I am a little perplexed though.
 

Sea Rider

Supreme Mariner
Joined
Sep 20, 2008
Messages
12,345
Re: 1999 Honda BF40

Nothing is eternal, just rinse and flush well whole engine after salt water use. What usually do when having my lower unit off is, with a small brush, brush a light coat of water grease throughout tail's interior, walls, water pump, next time you remove tail, grease should still be there. This prevents or lessens unwanted salt formations. You should light grease drive shaft before assembling lower unit back, next time tail will fall much faster..

Happy Boating
 
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pvanv

Admiral
Joined
Apr 20, 2008
Messages
6,555
Re: 1999 Honda BF40

You may have gotten Zebra mussels in it. Happens all the time in the Great Lakes. And if the LU "lives" down in the water, mud and junk will accumulate inside the LU cavities and exhaust passages of the mid section and LU. My motor even gets the mussels in the water intake -- INSIDE the strainer. They enter as tiny "seeds" and then grow to where they will not fit through the pickup screen nor the water pump. I have to clean them out every season.
 
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