ST 35 Cummins QSB fresh water flush

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Jerbro

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Joined
Nov 3, 2023
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FYI here’s a video of the engine freshwater flush mod on my ST35 using the Seaboard Marine T-piece…
 
I have been doing a fresh water flush for quite a while. I just this week upgraded my setup with the Seaboard Marine cap assembly for the Groco sea strainer.

Rather than a bucket, I connect the hose directly to the sea strainer. It provides plenty of flow for my QSB 5.9L
 
I added a quick deck connect to make it easier to flush without opening engine hatches. I flush as I am post-tripping the vessel each time I return to port. Easy.
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