Hello Boatrboy
I also have a new to me 2004 sea ray 340 with the ZF631v 2.0 transmissions and would like to service them, could you relay the information that you received directly from ZF, and would you be able to share the owners manual.
Any help would be welcome
I understand that some models were optioned out so that all drains would drain into the gray water/waste tank as to meet local laws, check to see if your waste tank is filling up after you use them, See section 7.9 of the owners manual.
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