I had another thred about Fresh Water and posted this from Formula Classic Boat Tech Support--I'm going to validate tomorrow but the more I look at the drawing (with the accumulator at the back of the boat) I wonder if the SR357 is the same--

The 357 fuel/wiring/plumbing diagrams were pretty vague. I have attached the diagram from a ’91 336 which looks similar to what I going to try to explain.



You will need to pull the cushion in the V-Berth area to expose the access panels to the water tank. That water line runs up the port side wall and behind the port side seat backrest. You will need to remove the backrest as well. If you look behind the backrest at the top you should see four screws that secure it. Once you remove the backrest you will then be able to see the water line and that it runs into the cabinet below the sink. Below the sink the water line runs into a t-fitting (may be covered by ozite or felt looking material).



The water line continues from this t-fitting towards the aft end of the boat behind the refrigerator. There should be four plastic like plugs on the front of the refrigerator, which when remove should allow you to remove the refrigerator.



I’m not sure if this is going to help, but let me know if you have any more questions.

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