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Flushing BF75 while in water

R

rasmuss

New member
I just bought a boat with a used BF75 from 2008. Im quite the perfectionist on maintenance and because it will be running in salt water I will flush the engine after each use.
I saw that the flush port should be used and the engine should be vertical. Every video I see the boat is on a trialer. Could there be any problem if I flush the engine while the lower unit is submerged? Should I rather tilt the engine and then flush?
 
I'm not an expert on this but I don't think it would hurt anything to flush it with the lower end in the water. After all, you're basically just trying to clean salt minerals from the engine and that should happen whether on the trailer or in the water.

I also don't think it will make any difference if the outboard is tilted up since you're "force feeding" it fresh water from a hose.. But, I won't be stunned if someone has a different opinion.

Good luck
 
Re: flushing an engine while tilted up. I'm pretty sure this will not work out well in the long run. There are all sorts of water passages within most outboards that will hold water if tilted up. The ONLY way they will drain completely will be if the are vertical, or possibly tilted just a hair in one direction or the other. One thing for sure, you don't want salty silt to accumulate anywhere in that engine. Flushing vertically, or running on a set of muffs while vertical, is the best plan to prevent that from happening.... -Al
 
Well, with the engine in vertical position and a fresh water hose hooked up the the flush valve will work fine, IMO. At the last minute tilt the engine up which will flush out the saltwater that is sitting around the water pump. That's what I did on my 225 while docked at Hatteras for several winters.
 
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