a. posting a photo of the device answers a lot of questions about what type of system you're dealing with,
b. Posting the brand name helps, too. It should be on the flange.
c. In most cases, 4 8mm nuts hold the assembly to the outflow tube. If you can't wait for 3 weeks and want it done right away, go someplace that doesn't mind natural fertilizer, take a number of jugs of water with you to wash out the bay. Loosen top screws a bit, and lower screws more and let the liquid run out while you gag and laugh.
d. There is likely a burr on the knife, so take sandpaper. In a perfect world, you have the brand name and have bought a new knife valve, so re-assembly is easy.
e. After connecting the new knife, test it. If it works as it should, go to someplace that can empty the solids from the tank while you wash it down thoroughly.
f. Enjoy a well-earned scotch afterwards. Stuff happens.
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Rick and Sandy
2003 American Eagle, 52K miles
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