Flushing a BF50D
Printed From: The Fishing Website
Category: General Forums
Forum Name: The Outboard Clinic
Forum Description: Anything related to outboard maintenance here....
URL: https://www.fishing.net.nz/forum/forum_posts.asp?TID=138745
Printed Date: 27 Jan 2026 at 2:41pm
Topic: Flushing a BF50D
Posted By: kinger
Subject: Flushing a BF50D
Date Posted: 21 Aug 2024 at 5:30pm
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The manual says use the flush port or a barrel. It seems the flush port wouldn't rinse the impeller and tube like muffs do, also read that it bypasses the thermostats.. Is it okay to use muffs if I block the additional intake port? The boat will be back in the lake within a few days of being in the sea, so it will get a good flush eventually if I go to the coast for the weekend.
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Replies:
Posted By: Mc Tool
Date Posted: 22 Aug 2024 at 3:33pm
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Well I reckon muffs are best because they replicate the actual working cooling system , and you can get in line salt and/or scale removal concentrate dispensers .
------------- I wish I was young again .... Id be heaps smarter than this time |
Posted By: kimber7wsm
Date Posted: 23 Aug 2024 at 7:05am
| I flush my BF225 through the port. After a bit I noticed the warm is warm. I can only conclude that the engine, including thermostats are being flushed. Not flushing the impellor doesn't faze me. It's rubber. It also should be replaced regularly anyway. |
Posted By: Mc Tool
Date Posted: 23 Aug 2024 at 8:48am
I guess that the screw in adapter would waste less water if you covered the normal intake holes . Im on a tank/ roof supply and have been down to a foot of water left , and the motor is fitted with a power trim so it dont fit in a drum . Just look for a decent puddle on the way home  ------------- I wish I was young again .... Id be heaps smarter than this time |
Posted By: Pcj
Date Posted: 23 Aug 2024 at 10:22am
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Got a mariner and manual says use flush point if no other means available.Do not run motor. So I use muffs ------------- "Times up" |
Posted By: Mc Tool
Date Posted: 23 Aug 2024 at 5:45pm
Thats a good point  I guess you wouldnt piss off the neighbors ( yeah heh heh heh , a V6 2 stroke and everyone knows ya have to blip them up to 3-4 grand to flush them propper ) if you got home late , and round here my engine flushing is like a friggin dinner bell cats and neighbors appearing from all directions . .------------- I wish I was young again .... Id be heaps smarter than this time |
Pcj wrote: