Stus-List Winterizing Diesel Engine Raw Water

Gary Nylander gnylander at
Sat Aug 5 09:26:25 EDT 2017

I didn’t have enough room to pour into the top of the strainer, so put a T in the input line. It has the benefit of being able to pump the bilge in an emergency.





From: CnC-List [mailto:cnc-list-bounces at] On Behalf Of William Walker via CnC-List
Sent: Saturday, August 5, 2017 9:01 AM
To: cnc-list at
Cc: wwadjourn at
Subject: Re: Stus-List Winterizing Diesel Engine Raw Water


I just close the intake through hull, take the top off the strainer, and pour in antifreeze with engine running..done.
Bill Walker 
CnC 36
Pentwater Mi 

Sent from AOL Mobile Mail


On Saturday, August 5, 2017 Ron Ricci via CnC-List <cnc-list at <mailto:cnc-list at> > wrote:

Each year, I struggle with pulling a hose off my raw water strainer to flush anti-freeze through the system.  I’ve considered installing a tee in the line.  Recently I came across an adaptor (Sea Flush) that fits in the top of most any raw water strainer but it didn’t look like there was enough vertical clearance.  There is an adaptor for a Groco strainer but my C&C 37+ with a Yanmar 3HM35F appears to have a Perko 0493 Size 5 strainer.  I contacted Perko who indicated that I could convert my 0493 strainer to a 0593 model which has a flush valve and hose connection on the top.  Unfortunately, it looks like I’d need about $250 worth of parts to make this work.  I’ve heard that a second cap for the strainer could be modified by installing a hose fitting.  The cap costs about $35.


I’m curious what other listers have done and if I’m right on the strainer model #.  




Ron Ricci

S/V Patriot

C&C 37+

Bristol, RI

Ron.Ricci at <mailto:Ron.Ricci at> 




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