Winterizing C28 wash down Pump

Paul&Wendy

Member
Joined
Sep 3, 2026
Messages
14
Fluid Motion Model
C-28
Hull Identification Number
FMLC2827A919
My first year winterizing our C28. Where does the cockpit wash down pump draw sea water from? I can't seem to locate a seacock or strainer. Is it paired with another seacock/strainer?
 
On a 2017 R29 D4-300 Volvo, the wash down pump is adjacent to the starboard sea water inlet valve. Your's may be similar. A bilge heater is all I do for winterization in the Seattle area. Boat is in water year round.
 
On my C-28 the washdown draws from the same sea cock as the main engine. There is a marine hardware multi port strainer.

-martin610
 
On my 2019 C28 the wash down uses a shared strainer on the starboard side. The thru hull is the rearmost one on the starboard side
 
On our 2020 C28 it also draws from the same strainer on the starboard side that the A/C uses.
 
Thanks for your replies. I noticed that our AC strainer has two output hoses- one must be for the wash down pump as mentioned above. I'll check when I'm at the boat tomorrow
 
on my 2014 C28 the seacock feeds the volvo coolant, toilet and wash down pump so with the seacock closed and the engine running I pour 4 gal of RV antifreeze into the filter with cap off. Then pour the antifreeze into the filter with someone flushing the toilet and opening the wash down until the pink antifreeze comes out.
 
OK, I confirmed today that the wash down pump and AC share the same seacock/strainer basket. Our C28 is a 2019 with a Volvo D4.

The winterizing process has been easier than expected. UTube shows a complicated method of the removing hoses from the strainers. The tech used a five gallon pale filled with antifreeze with a pump and conical (universal) hose coupling to plug into the removed strainer hoses.....very complicated compared to just pouring antifreeze into the strainers with their cap removed while a second person activates the engine, water system, AC etc.

I also made up a short hose from Home Depot components to create a bypass for the water heater to winterize the faucets. That hose connects the inlet and outlet hoses to bypass the tank.
 
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